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strace/mpers.awk

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Add copyright headers to some files which lack them Before this change, all files that exist since 20th century had copyright headers, while most files that appeared later didn't. This change fixes the inconsistency by adding missing copyright headers. It doesn't mean that copyright headers became maintained. In my view, git history provides much better information on this subject and is much more accurate than copyright headers.
2015-12-17 20:56:48 +03:00
#!/bin/gawk
#
# Copyright (c) 2015 Elvira Khabirova <lineprinter0@gmail.com>
mpers.awk: add support for DWARF files generated by clang * mpers.awk: Define default_pointer_size. Initialize byte_size for DW_TAG_pointer_type to default_pointer_size. Set parent for DW_TAG_member only. Handle DW_AT_count as an alternative to DW_AT_upper_bound.
2016-01-13 05:31:12 +03:00
# Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
Update copyright headers Headers updated automatically using maint/update_copyright_years.sh script.
2018-02-14 01:00:00 +03:00
# Copyright (c) 2015-2018 The strace developers.
Add copyright headers to some files which lack them Before this change, all files that exist since 20th century had copyright headers, while most files that appeared later didn't. This change fixes the inconsistency by adding missing copyright headers. It doesn't mean that copyright headers became maintained. In my view, git history provides much better information on this subject and is much more accurate than copyright headers.
2015-12-17 20:56:48 +03:00
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mpers.awk: separate local variables from real parameters by newline * mpers.awk (array_get, update_upper_bound): Separate local variables from real parameters by newline.
2017-08-30 12:48:51 +03:00
function array_get(array_idx, array_member, \
array_return)
Robustify mpers.awk against invalid input Make mpers.awk check that accessed elements of the main array that are expected to have non-empty values really meet this requirement. * mpers.awk (array_get): New function. (what_is, END): Use it. * mpers_test.sh: Use a more complicated type to test mpers machinery. Reported-by: Mike Frysinger <vapier@gentoo.org>
2015-12-15 03:26:46 +03:00
{
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
array_return = array[array_idx, array_member]
Robustify mpers.awk against invalid input Make mpers.awk check that accessed elements of the main array that are expected to have non-empty values really meet this requirement. * mpers.awk (array_get): New function. (what_is, END): Use it. * mpers_test.sh: Use a more complicated type to test mpers machinery. Reported-by: Mike Frysinger <vapier@gentoo.org>
2015-12-15 03:26:46 +03:00
if ("" == array_return) {
printf("%s: index [%s] without %s\n",
FILENAME, array_idx, array_member) > "/dev/stderr"
exit 1
}
return array_return
}
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
function norm_idx(idx)
{
return sprintf("%016s", idx)
}
mpers.awk: make fillers added to the output structure more predictable * mpers.awk (array_seq): New function. (what_is): Use it for printing filler names. Tweak return types. * mpers_test.sh: Use a more complicated sample type to test mpers machinery.
2015-12-15 15:58:42 +03:00
function array_seq(array_idx)
{
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
if ((array_idx, "seq") in array)
return array[array_idx, "seq"]
mpers.awk: make fillers added to the output structure more predictable * mpers.awk (array_seq): New function. (what_is): Use it for printing filler names. Tweak return types. * mpers_test.sh: Use a more complicated sample type to test mpers machinery.
2015-12-15 15:58:42 +03:00
index_seq++
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
array[array_idx, "seq"] = index_seq
mpers.awk: make fillers added to the output structure more predictable * mpers.awk (array_seq): New function. (what_is): Use it for printing filler names. Tweak return types. * mpers_test.sh: Use a more complicated sample type to test mpers machinery.
2015-12-15 15:58:42 +03:00
return index_seq
}
mpers.awk: declare local variables consistently * mpers.awk (compare_indices): Make c1 and c2 variables local. (enter): Make item variable local. (what_is): Make loc_diff, returned_size, and to_return local.
2017-08-31 12:54:24 +03:00
function enter(array_idx,
item)
Robustify mpers.awk against input containing index loops Make mpers.awk check for potential index loops. Such loops should not normally happen, but mpers.awk will not go into infinite recursion if they do. * mpers.awk (enter, leave): New functions. (what_is): Use them.
2015-12-15 06:35:26 +03:00
{
mpers.awk: make fillers added to the output structure more predictable * mpers.awk (array_seq): New function. (what_is): Use it for printing filler names. Tweak return types. * mpers_test.sh: Use a more complicated sample type to test mpers machinery.
2015-12-15 15:58:42 +03:00
if (array_idx in called) {
Robustify mpers.awk against input containing index loops Make mpers.awk check for potential index loops. Such loops should not normally happen, but mpers.awk will not go into infinite recursion if they do. * mpers.awk (enter, leave): New functions. (what_is): Use them.
2015-12-15 06:35:26 +03:00
printf("%s: index loop detected:", FILENAME) > "/dev/stderr"
for (item in called)
printf(" %s", item) > "/dev/stderr"
print "" > "/dev/stderr"
exit 1
}
called[array_idx] = 1
}
function leave(array_idx, to_return)
{
delete called[array_idx]
return to_return
}
mpers.awk: separate local variables from real parameters by newline * mpers.awk (array_get, update_upper_bound): Separate local variables from real parameters by newline.
2017-08-30 12:48:51 +03:00
function update_upper_bound(idx, val, \
count)
mpers.awk: add support for multidimensional arrays * mpers.awk (update_upper_bound): New function, which maintains new "count" property for storing total element count and updates "upper_bound" property which now contains string with array dimensions. (/^DW_AT_upper_bound/, /^DW_AT_count/): Use it. (what_is) <case "array_type">: Use "count" property in order to calculate returned_size, do not embody returned string in square brackets. * mpers_test.sh: Add checks for multidimensional arrays.
2017-04-04 06:08:20 +03:00
{
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
count = array[idx, "count"]
mpers.awk: add support for multidimensional arrays * mpers.awk (update_upper_bound): New function, which maintains new "count" property for storing total element count and updates "upper_bound" property which now contains string with array dimensions. (/^DW_AT_upper_bound/, /^DW_AT_count/): Use it. (what_is) <case "array_type">: Use "count" property in order to calculate returned_size, do not embody returned string in square brackets. * mpers_test.sh: Add checks for multidimensional arrays.
2017-04-04 06:08:20 +03:00
if (count == "")
count = 1
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
array[idx, "count"] = count * val
array[idx, "upper_bound"] = array[idx, "upper_bound"] "[" val "]"
mpers.awk: add support for multidimensional arrays * mpers.awk (update_upper_bound): New function, which maintains new "count" property for storing total element count and updates "upper_bound" property which now contains string with array dimensions. (/^DW_AT_upper_bound/, /^DW_AT_count/): Use it. (what_is) <case "array_type">: Use "count" property in order to calculate returned_size, do not embody returned string in square brackets. * mpers_test.sh: Add checks for multidimensional arrays.
2017-04-04 06:08:20 +03:00
}
mpers.awk: declare local variables consistently * mpers.awk (compare_indices): Make c1 and c2 variables local. (enter): Make item variable local. (what_is): Make loc_diff, returned_size, and to_return local.
2017-08-31 12:54:24 +03:00
function what_is(what_idx, \
item, loc_diff, location, prev_location, prev_returned_size, \
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
special, to_return, type_idx, enc, i)
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
{
Robustify mpers.awk against input containing index loops Make mpers.awk check for potential index loops. Such loops should not normally happen, but mpers.awk will not go into infinite recursion if they do. * mpers.awk (enter, leave): New functions. (what_is): Use them.
2015-12-15 06:35:26 +03:00
enter(what_idx)
Robustify mpers.awk against invalid input Make mpers.awk check that accessed elements of the main array that are expected to have non-empty values really meet this requirement. * mpers.awk (array_get): New function. (what_is, END): Use it. * mpers_test.sh: Use a more complicated type to test mpers machinery. Reported-by: Mike Frysinger <vapier@gentoo.org>
2015-12-15 03:26:46 +03:00
special = array_get(what_idx, "special")
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
if (special == "base_type") {
enc = array_get(what_idx, "encoding")
if (enc == 5) { # signed
mpers.awk: make fillers added to the output structure more predictable * mpers.awk (array_seq): New function. (what_is): Use it for printing filler names. Tweak return types. * mpers_test.sh: Use a more complicated sample type to test mpers machinery.
2015-12-15 15:58:42 +03:00
printf("int%s_t ",
8 * array_get(what_idx, "byte_size"))
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
} else if (enc == 7) { # unsigned
mpers.awk: make fillers added to the output structure more predictable * mpers.awk (array_seq): New function. (what_is): Use it for printing filler names. Tweak return types. * mpers_test.sh: Use a more complicated sample type to test mpers machinery.
2015-12-15 15:58:42 +03:00
printf("uint%s_t ",
8 * array_get(what_idx, "byte_size"))
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
} else { # float, signed/unsigned char
Robustify mpers.awk against invalid input Make mpers.awk check that accessed elements of the main array that are expected to have non-empty values really meet this requirement. * mpers.awk (array_get): New function. (what_is, END): Use it. * mpers_test.sh: Use a more complicated type to test mpers machinery. Reported-by: Mike Frysinger <vapier@gentoo.org>
2015-12-15 03:26:46 +03:00
printf("%s ", array_get(what_idx, "name"))
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
}
Robustify mpers.awk against invalid input Make mpers.awk check that accessed elements of the main array that are expected to have non-empty values really meet this requirement. * mpers.awk (array_get): New function. (what_is, END): Use it. * mpers_test.sh: Use a more complicated type to test mpers machinery. Reported-by: Mike Frysinger <vapier@gentoo.org>
2015-12-15 03:26:46 +03:00
returned_size = array_get(what_idx, "byte_size")
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
} else if (special == "enumeration_type") {
Robustify mpers.awk against invalid input Make mpers.awk check that accessed elements of the main array that are expected to have non-empty values really meet this requirement. * mpers.awk (array_get): New function. (what_is, END): Use it. * mpers_test.sh: Use a more complicated type to test mpers machinery. Reported-by: Mike Frysinger <vapier@gentoo.org>
2015-12-15 03:26:46 +03:00
returned_size = array_get(what_idx, "byte_size")
mpers.awk: make fillers added to the output structure more predictable * mpers.awk (array_seq): New function. (what_is): Use it for printing filler names. Tweak return types. * mpers_test.sh: Use a more complicated sample type to test mpers machinery.
2015-12-15 15:58:42 +03:00
printf("uint%s_t ", 8 * returned_size)
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
} else if (special == "pointer_type") {
mpers.awk: make fillers added to the output structure more predictable * mpers.awk (array_seq): New function. (what_is): Use it for printing filler names. Tweak return types. * mpers_test.sh: Use a more complicated sample type to test mpers machinery.
2015-12-15 15:58:42 +03:00
printf("mpers_ptr_t ")
Robustify mpers.awk against invalid input Make mpers.awk check that accessed elements of the main array that are expected to have non-empty values really meet this requirement. * mpers.awk (array_get): New function. (what_is, END): Use it. * mpers_test.sh: Use a more complicated type to test mpers machinery. Reported-by: Mike Frysinger <vapier@gentoo.org>
2015-12-15 03:26:46 +03:00
returned_size = array_get(what_idx, "byte_size")
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
} else if (special == "array_type") {
Robustify mpers.awk against invalid input Make mpers.awk check that accessed elements of the main array that are expected to have non-empty values really meet this requirement. * mpers.awk (array_get): New function. (what_is, END): Use it. * mpers_test.sh: Use a more complicated type to test mpers machinery. Reported-by: Mike Frysinger <vapier@gentoo.org>
2015-12-15 03:26:46 +03:00
type_idx = array_get(what_idx, "type")
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
what_is(type_idx)
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
to_return = array[what_idx, "upper_bound"]
Robustify mpers.awk against invalid input Make mpers.awk check that accessed elements of the main array that are expected to have non-empty values really meet this requirement. * mpers.awk (array_get): New function. (what_is, END): Use it. * mpers_test.sh: Use a more complicated type to test mpers machinery. Reported-by: Mike Frysinger <vapier@gentoo.org>
2015-12-15 03:26:46 +03:00
if ("" == to_return)
mpers.awk: add support for multidimensional arrays * mpers.awk (update_upper_bound): New function, which maintains new "count" property for storing total element count and updates "upper_bound" property which now contains string with array dimensions. (/^DW_AT_upper_bound/, /^DW_AT_count/): Use it. (what_is) <case "array_type">: Use "count" property in order to calculate returned_size, do not embody returned string in square brackets. * mpers_test.sh: Add checks for multidimensional arrays.
2017-04-04 06:08:20 +03:00
to_return = "[0]"
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
returned_size = array[what_idx, "count"] * returned_size
mpers.awk: add support for multidimensional arrays * mpers.awk (update_upper_bound): New function, which maintains new "count" property for storing total element count and updates "upper_bound" property which now contains string with array dimensions. (/^DW_AT_upper_bound/, /^DW_AT_count/): Use it. (what_is) <case "array_type">: Use "count" property in order to calculate returned_size, do not embody returned string in square brackets. * mpers_test.sh: Add checks for multidimensional arrays.
2017-04-04 06:08:20 +03:00
return leave(what_idx, to_return)
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
} else if (special == "structure_type") {
mpers: fix compound types with arbitrary member alignments * mpers.sh: Compound types are now represented as packed with character arrays as explicit fillers inbetween members and at the end.
2015-11-26 03:03:24 +03:00
print "struct {"
prev_location = 0
location = 0
returned_size = 0
prev_returned_size = 0
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
for (i = 1; i <= parents_cnt; i += 1) {
if (array_parents[aparents_keys[i]] == what_idx) {
location = array_get(aparents_keys[i], "location")
mpers: fix compound types with arbitrary member alignments * mpers.sh: Compound types are now represented as packed with character arrays as explicit fillers inbetween members and at the end.
2015-11-26 03:03:24 +03:00
loc_diff = location - prev_location - \
prev_returned_size
if (loc_diff != 0) {
mpers.awk: make fillers added to the output structure more predictable * mpers.awk (array_seq): New function. (what_is): Use it for printing filler names. Tweak return types. * mpers_test.sh: Use a more complicated sample type to test mpers machinery.
2015-12-15 15:58:42 +03:00
printf("unsigned char mpers_%s_%s[%s];\n",
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
"filler", array_seq(aparents_keys[i]), loc_diff)
mpers: fix compound types with arbitrary member alignments * mpers.sh: Compound types are now represented as packed with character arrays as explicit fillers inbetween members and at the end.
2015-11-26 03:03:24 +03:00
}
prev_location = location
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
returned = what_is(aparents_keys[i])
mpers: fix compound types with arbitrary member alignments * mpers.sh: Compound types are now represented as packed with character arrays as explicit fillers inbetween members and at the end.
2015-11-26 03:03:24 +03:00
prev_returned_size = returned_size
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
printf("%s%s;\n", array[aparents_keys[i], "name"], returned)
mpers: fix compound types with arbitrary member alignments * mpers.sh: Compound types are now represented as packed with character arrays as explicit fillers inbetween members and at the end.
2015-11-26 03:03:24 +03:00
}
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
}
Robustify mpers.awk against invalid input Make mpers.awk check that accessed elements of the main array that are expected to have non-empty values really meet this requirement. * mpers.awk (array_get): New function. (what_is, END): Use it. * mpers_test.sh: Use a more complicated type to test mpers machinery. Reported-by: Mike Frysinger <vapier@gentoo.org>
2015-12-15 03:26:46 +03:00
returned_size = array_get(what_idx, "byte_size")
mpers: fix compound types with arbitrary member alignments * mpers.sh: Compound types are now represented as packed with character arrays as explicit fillers inbetween members and at the end.
2015-11-26 03:03:24 +03:00
loc_diff = returned_size - prev_location - prev_returned_size
if (loc_diff != 0) {
mpers.awk: make fillers added to the output structure more predictable * mpers.awk (array_seq): New function. (what_is): Use it for printing filler names. Tweak return types. * mpers_test.sh: Use a more complicated sample type to test mpers machinery.
2015-12-15 15:58:42 +03:00
printf("unsigned char mpers_%s_%s[%s];\n",
"end_filler", array_seq(item), loc_diff)
mpers: fix compound types with arbitrary member alignments * mpers.sh: Compound types are now represented as packed with character arrays as explicit fillers inbetween members and at the end.
2015-11-26 03:03:24 +03:00
}
mpers.awk: make fillers added to the output structure more predictable * mpers.awk (array_seq): New function. (what_is): Use it for printing filler names. Tweak return types. * mpers_test.sh: Use a more complicated sample type to test mpers machinery.
2015-12-15 15:58:42 +03:00
printf("} ATTRIBUTE_PACKED ")
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
} else if (special == "union_type") {
mpers: fix compound types with arbitrary member alignments * mpers.sh: Compound types are now represented as packed with character arrays as explicit fillers inbetween members and at the end.
2015-11-26 03:03:24 +03:00
print "union {"
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
for (i = 1; i <= parents_cnt; i += 1) {
if (array_parents[aparents_keys[i]] == what_idx) {
returned = what_is(aparents_keys[i])
printf("%s%s;\n", array[aparents_keys[i], "name"], returned)
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
}
}
mpers.awk: make fillers added to the output structure more predictable * mpers.awk (array_seq): New function. (what_is): Use it for printing filler names. Tweak return types. * mpers_test.sh: Use a more complicated sample type to test mpers machinery.
2015-12-15 15:58:42 +03:00
printf("} ")
Robustify mpers.awk against invalid input Make mpers.awk check that accessed elements of the main array that are expected to have non-empty values really meet this requirement. * mpers.awk (array_get): New function. (what_is, END): Use it. * mpers_test.sh: Use a more complicated type to test mpers machinery. Reported-by: Mike Frysinger <vapier@gentoo.org>
2015-12-15 03:26:46 +03:00
returned_size = array_get(what_idx, "byte_size")
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
} else if (special == "typedef") {
Robustify mpers.awk against invalid input Make mpers.awk check that accessed elements of the main array that are expected to have non-empty values really meet this requirement. * mpers.awk (array_get): New function. (what_is, END): Use it. * mpers_test.sh: Use a more complicated type to test mpers machinery. Reported-by: Mike Frysinger <vapier@gentoo.org>
2015-12-15 03:26:46 +03:00
type_idx = array_get(what_idx, "type")
Robustify mpers.awk against input containing index loops Make mpers.awk check for potential index loops. Such loops should not normally happen, but mpers.awk will not go into infinite recursion if they do. * mpers.awk (enter, leave): New functions. (what_is): Use them.
2015-12-15 06:35:26 +03:00
return leave(what_idx, what_is(type_idx))
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
} else if (special == "member") {
Robustify mpers.awk against invalid input Make mpers.awk check that accessed elements of the main array that are expected to have non-empty values really meet this requirement. * mpers.awk (array_get): New function. (what_is, END): Use it. * mpers_test.sh: Use a more complicated type to test mpers machinery. Reported-by: Mike Frysinger <vapier@gentoo.org>
2015-12-15 03:26:46 +03:00
type_idx = array_get(what_idx, "type")
Robustify mpers.awk against input containing index loops Make mpers.awk check for potential index loops. Such loops should not normally happen, but mpers.awk will not go into infinite recursion if they do. * mpers.awk (enter, leave): New functions. (what_is): Use them.
2015-12-15 06:35:26 +03:00
return leave(what_idx, what_is(type_idx))
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
} else {
Robustify mpers.awk against invalid input Make mpers.awk check that accessed elements of the main array that are expected to have non-empty values really meet this requirement. * mpers.awk (array_get): New function. (what_is, END): Use it. * mpers_test.sh: Use a more complicated type to test mpers machinery. Reported-by: Mike Frysinger <vapier@gentoo.org>
2015-12-15 03:26:46 +03:00
type_idx = array_get(what_idx, "type")
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
what_is(type_idx)
}
mpers.awk: make fillers added to the output structure more predictable * mpers.awk (array_seq): New function. (what_is): Use it for printing filler names. Tweak return types. * mpers_test.sh: Use a more complicated sample type to test mpers machinery.
2015-12-15 15:58:42 +03:00
return leave(what_idx, "")
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
}
BEGIN {
mpers.awk: add support for DWARF files generated by clang * mpers.awk: Define default_pointer_size. Initialize byte_size for DW_TAG_pointer_type to default_pointer_size. Set parent for DW_TAG_member only. Handle DW_AT_count as an alternative to DW_AT_upper_bound.
2016-01-13 05:31:12 +03:00
match(ARCH_FLAG, /[[:digit:]]+/, temparray)
default_pointer_size = temparray[0] / 8
mpers.awk: use stdint.h instead of inttypes.h As <inttypes.h> is included in files generated by mpers.awk to obtain definitions of uintNN_t types provided by <stdint.h>, replace the former header with the latter. * mpers.awk: Use <stdint.h> instead of <inttypes.h>. * mpers_test.sh: Update expected output.
2018-02-24 23:42:03 +03:00
print "#include <stdint.h>"
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
}
/^<[[:xdigit:]]+>/ {
match($0, /([[:alnum:]]+)><([[:alnum:]]+)/, matches)
level = matches[1]
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
idx = norm_idx(matches[2])
array[idx, "idx"] = idx
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
parent[level] = idx
}
/^DW_AT_data_member_location/ {
mpers.awk: add support for DWARF version 2 format * mpers.awk: Handle DW_AT_data_member_location in DWARF v2 format.
2015-12-16 04:25:10 +03:00
if (!match($0, /\(DW_OP_plus_uconst:[[:space:]]+([[:digit:]]+)\)/, temparray))
match($0, /([[:digit:]]+)/, temparray)
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
array[idx, "location"] = temparray[1]
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
}
/^DW_AT_name/ {
mpers: fix compound types with arbitrary member alignments * mpers.sh: Compound types are now represented as packed with character arrays as explicit fillers inbetween members and at the end.
2015-11-26 03:03:24 +03:00
match($0, /:[[:space:]]+([[:alpha:]_][[:alnum:]_[:space:]]*)/, \
temparray)
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
array_names[idx] = 1
array[idx, "name"] = temparray[1]
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
}
/^DW_AT_byte_size/ {
match($0, /[[:digit:]]+/, temparray)
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
array[idx, "byte_size"] = temparray[0]
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
}
/^DW_AT_encoding/ {
match($0, /[[:digit:]]+/, temparray)
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
array[idx, "encoding"] = temparray[0]
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
}
/^DW_AT_type/ {
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
match($0, /:[[:space:]]+<0x([[:xdigit:]]*)>$/, temparray)
array[idx, "type"] = norm_idx(temparray[1])
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
}
/^DW_AT_upper_bound/ {
match($0, /[[:digit:]]+/, temparray)
mpers.awk: add support for multidimensional arrays * mpers.awk (update_upper_bound): New function, which maintains new "count" property for storing total element count and updates "upper_bound" property which now contains string with array dimensions. (/^DW_AT_upper_bound/, /^DW_AT_count/): Use it. (what_is) <case "array_type">: Use "count" property in order to calculate returned_size, do not embody returned string in square brackets. * mpers_test.sh: Add checks for multidimensional arrays.
2017-04-04 06:08:20 +03:00
update_upper_bound(parent[level - 1], temparray[0] + 1)
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
}
mpers.awk: add support for DWARF files generated by clang * mpers.awk: Define default_pointer_size. Initialize byte_size for DW_TAG_pointer_type to default_pointer_size. Set parent for DW_TAG_member only. Handle DW_AT_count as an alternative to DW_AT_upper_bound.
2016-01-13 05:31:12 +03:00
/^DW_AT_count/ {
match($0, /[[:digit:]]+/, temparray)
mpers.awk: add support for multidimensional arrays * mpers.awk (update_upper_bound): New function, which maintains new "count" property for storing total element count and updates "upper_bound" property which now contains string with array dimensions. (/^DW_AT_upper_bound/, /^DW_AT_count/): Use it. (what_is) <case "array_type">: Use "count" property in order to calculate returned_size, do not embody returned string in square brackets. * mpers_test.sh: Add checks for multidimensional arrays.
2017-04-04 06:08:20 +03:00
update_upper_bound(parent[level - 1], temparray[0])
mpers.awk: add support for DWARF files generated by clang * mpers.awk: Define default_pointer_size. Initialize byte_size for DW_TAG_pointer_type to default_pointer_size. Set parent for DW_TAG_member only. Handle DW_AT_count as an alternative to DW_AT_upper_bound.
2016-01-13 05:31:12 +03:00
}
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
/^Abbrev Number:[^(]+\(DW_TAG_/ {
if (match($0, /typedef|union_type|structure_type|pointer_type\
|enumeration_type|array_type|base_type|member/, temparray)) {
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
array_special[idx] = temparray[0]
array[idx, "special"] = temparray[0]
mpers.awk: add support for DWARF files generated by clang * mpers.awk: Define default_pointer_size. Initialize byte_size for DW_TAG_pointer_type to default_pointer_size. Set parent for DW_TAG_member only. Handle DW_AT_count as an alternative to DW_AT_upper_bound.
2016-01-13 05:31:12 +03:00
if ("pointer_type" == temparray[0])
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
array[idx, "byte_size"] = default_pointer_size
mpers.awk: add support for DWARF files generated by clang * mpers.awk: Define default_pointer_size. Initialize byte_size for DW_TAG_pointer_type to default_pointer_size. Set parent for DW_TAG_member only. Handle DW_AT_count as an alternative to DW_AT_upper_bound.
2016-01-13 05:31:12 +03:00
if (level > 1 && "member" == temparray[0])
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
array_parents[idx] = parent[level-1]
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
}
}
END {
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
parents_cnt = asorti(array_parents, aparents_keys)
for (item in array_special) {
if (array[item, "special"] == "pointer_type") {
mpers.awk: avoid redefinition of mpers_ptr_t Older versions of gcc like those found in RHEL6 fail with the following diagnostics: In file included from block.c:32: ./mpers-m32/struct_blk_user_trace_setup.h:2: error: redefinition of typedef ‘mpers_ptr_t’ mpers_type.h:44: note: previous declaration of ‘mpers_ptr_t’ was here * mpers.awk (END): Add #ifndef guard to mpers_ptr_t typedef. * mpers_test.sh: Update expected output.
2018-01-19 20:07:04 +03:00
mpers_ptr_t = \
"uint" 8 * array_get(item, "byte_size") "_t"
print "#ifndef mpers_ptr_t_is_" mpers_ptr_t
print "typedef " mpers_ptr_t " mpers_ptr_t;"
print "#define mpers_ptr_t_is_" mpers_ptr_t
print "#endif"
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
break
}
}
mpers: implement gawk 3 support Some old systems that still make some sense to be supported have only gawk 3, so let's support them for now. In order to achieve that, multiple changes have been implemented: - Multidimensional arrays are replaced with single-dimensional ones. In most places it's a "][" -> ", " replacement, as awk allows some kind of emulation of multidimensional arrays that way, but in several occasions (specifically for storing name and special fields) we have to iterate over them later, so we store that information in additional arrays in order to get the keys. - "switch" statements are replaced with sets of "if ... else if ... else" statements. This change is trivial, except we've added a temporary variable in what_is order to store expression value, for readability purposes. - No support for array iteration ordering. This one is most ugly of them all. Luckily, not that ugly, we've just had to process index a bit in order to make it lexicographically sortable and add two temporary arrays containing sorted indices in order to sort over them instead of those two arrays that we've added in order to work around lack of multidimensional array support. * mpers.awk (compare_indices): Remove unused function. (array_get, update_upper_bound, /^DW_AT_data_member_location/, /^DW_AT_byte_size/, /^DW_AT_encoding/): Replace multidimensional array access with comma-concatenated index. (norm_idx): New function. (array_seq): Replace multidimensional array access with comma-concatenated index. Use comma-concatenated pair of (array_idx, "seq") in order to check presence of the item in an array. (what_is): Add enc and i local variables. Store the value of array[what_idx, "encoding"] in it. Replace "switch" statements with sets of "if ... else if ... else" statements. Replace multidimensional array access with comma-concatenated index. Use for (... ; ...; ...) iteration over aparents_keys instead of iteration over array. (/^<[[:xdigit:]]+>/): Store idx as norm_idx(matches[2]). Replace multidimensional array access with comma-concatenated index. Store an additional flag in array_names array. (/^DW_AT_name/): Replace multidimensional array access with comma-concatenated index. Add a flag to array_names for that idx. (/^DW_AT_type/): Do not capture "0x" as a part of a group, normalise the captured group. Replace multidimensional array access with comma-concatenated index. (/^Abbrev Number:[^(]+\(DW_TAG_/): Replace multidimensional array access with comma-concatenated index. Store additional flags in array_special and array_parents arrays. (END): Remove PROCINFO["sorted_in"] setup. Sort array_parents. Replace multidimensional array access with comma-concatenated index. Iterate over array_special to go over all the items that have "special" field. Iterate over array_names to go over all items that have "name" field. * NEWS: Mention it.
2018-01-18 10:49:57 +03:00
for (item in array_names) {
if (array[item, "name"] == VAR_NAME) {
Robustify mpers.awk against invalid input Make mpers.awk check that accessed elements of the main array that are expected to have non-empty values really meet this requirement. * mpers.awk (array_get): New function. (what_is, END): Use it. * mpers_test.sh: Use a more complicated type to test mpers machinery. Reported-by: Mike Frysinger <vapier@gentoo.org>
2015-12-15 03:26:46 +03:00
type = array_get(item, "type")
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
print "typedef"
Robustify mpers.awk against invalid input Make mpers.awk check that accessed elements of the main array that are expected to have non-empty values really meet this requirement. * mpers.awk (array_get): New function. (what_is, END): Use it. * mpers_test.sh: Use a more complicated type to test mpers machinery. Reported-by: Mike Frysinger <vapier@gentoo.org>
2015-12-15 03:26:46 +03:00
what_is(type)
name = array_get(type, "name")
print ARCH_FLAG "_" name ";"
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
print "#define MPERS_" \
Robustify mpers.awk against invalid input Make mpers.awk check that accessed elements of the main array that are expected to have non-empty values really meet this requirement. * mpers.awk (array_get): New function. (what_is, END): Use it. * mpers_test.sh: Use a more complicated type to test mpers machinery. Reported-by: Mike Frysinger <vapier@gentoo.org>
2015-12-15 03:26:46 +03:00
ARCH_FLAG "_" name " " \
ARCH_FLAG "_" name
Add mpers support Add a subsystem for semi-automatical definition of how parsers should work with personality-dependent (mpers) types of tracee's data. Create auxiliary libraries containing mpers syscall parsers and printer functions, one library for each possible nonnative target personality. Currently some parsers do not handle differences in definitions of data types between personalities, namely LP64 and ILP32. When this is the case, long integers, pointers, and all compound types containing long and pointer members may be printed incorrectly, because of differences in sizes, offsets and alignments. Since in most cases these are the only differences in desired behaviour of parsers and printers for different personalities, a correct way would be to compile one source code into multiple parsers, differing only in definitions of mpers types. To get a definition of a given type for nonnative personality a very basic .c file containing a declaration of a variable of this type is being compiled for this personality (using -m32 or -mx32 compiler flag). Information about the type is then being extracted from this binary's DWARF debug info with an awk script and put into a corresponding header file. Resulting headers are being used to compile mpers variations of syscall parsers and printer functions. In addition to syscall parsers, there can occur a need to create mpers printing functions, which then can be called from many places in the code (for example, printsiginfo_at). Such functions (printers) are marked in a special manner. For each possible nonnative target personality a library is being created, containing mpers variations of syscall parsers and printers. Only syscall parsers from files marked in a special manner and specially marked functions from such files are being recompiled and included in these libraries. generate_mpers_am.sh is called by bootstrap to find the files from strace_SOURCES which include MPERS_DEFS. During compilation, these files are being inspected for inclusions of DEF_MPERS_TYPE, and nonnative variations of each included type are being generated by an awk script. Mpers parser names are being modified during inclusions of syscallent headers for nonnative personalities. Pointers to printers are being stored in structs struct_printers, and a master pointer printers is being updated on every set_personality. * README-mpers: New README explaining how to use mpers support. * empty.h: New empty file. * generate_mpers_am.sh: New file. * mpers.awk: Likewise. * mpers.sh: Likewise. * mpers_test.sh: Likewise. * mpers_type.h: Likewise. * Makefile.am (strace_SOURCES): Add empty.h and mpers_type.h. (strace_CPPFLAGS, strace_LDFLAGS, strace_LDADD): Move to the beginning of the file. (strace_LDADD, noinst_LIBRARIES): Add libmpers-%.a. (EXTRA_DIST): Add mpers.awk, mpers.sh, mpers_test.sh. (BUILT_SOURCES, CLEANFILES): Add new generated files: native_printer_decls.h, native_printer_defs.h, printers.h, [HAVE_M32_MPERS] $(mpers_m32_targets), and [HAVE_MX32_MPERS] $(mpers_mx32_targets). (mpers_NAME, mpers_PREFIX, mpers_DEFS, mpers_INCLUDES, mpers_CPPFLAGS, mpers_sh_opts, libmpers_CPPFLAGS, libmpers_m[x]32_a_SOURCES, libmpers_m[x]32_a_CPPFLAGS, mpers_m[x]32_targets): New variables. (mpers-m[x]32.stamp, m[x]32_defs.h, m[x]32_funcs.h, printers.h, %_printer_decls.h, %_printer_defs.h, clean-local, native_printer_decls.h, native_printer_defs.h, $mpers_m[x]32_targets): New targets. * bootstrap: Add generate_mpers_am.sh. * configure.ac: Add AC_PROG_RANLIB. * m4/mpers.m4: Add HAVE_MPERS variable. Add $st_cv_mpers checks. * defs.h: Include mpers_type.h. Include printers.h, native_printer_decls.h, define MPERS_PRINTER_NAME. Redefine SYS_FUNC_NAME. Define MPERS_PRINTER_DECL. [HAVE_M32_MPERS]: define PERSONALITY1_INCLUDE_FUNCS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS for X86_64, X32. [HAVE_MX32_MPERS]: define PERSONALITY2_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS for X86_64. Add fallback definitions of PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. * syscall.c: Include PERSONALITY1_INCLUDE_FUNCS, PERSONALITY2_INCLUDE_FUNCS, PERSONALITY0_INCLUDE_PRINTERS_DECLS, PERSONALITY0_INCLUDE_PRINTERS_DEFS, PERSONALITY1_INCLUDE_PRINTERS_DECLS, PERSONALITY1_INCLUDE_PRINTERS_DEFS, PERSONALITY2_INCLUDE_PRINTERS_DECLS, PERSONALITY2_INCLUDE_PRINTERS_DEFS. (printers): New struct. Update it when needed. * .gitignore: Add libmpers-m32.a, libmpers-mx32.a, m32_defs.h, m32_funcs.h, m32_printer_decls.h, m32_printer_defs.h, mpers-m32, mpers-m32.stamp, mpers-mx32, mpers-mx32.stamp, mpers.am, mx32_defs.h, mx32_funcs.h, mx32_printer_decls.h, mx32_printer_defs.h, native_printer_decls.h, native_printer_defs.h, and printers.h.
2015-08-04 01:47:02 +03:00
break
}
}
}
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