249 lines
7.1 KiB
Awk
249 lines
7.1 KiB
Awk
#!/bin/gawk
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#
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# Copyright (c) 2015 Elvira Khabirova <lineprinter0@gmail.com>
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# Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. The name of the author may not be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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function compare_indices(i1, v1, i2, v2) {
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c1 = strtonum(sprintf("%s", i1))
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c2 = strtonum(sprintf("%s", i2))
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if (c1 < c2)
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return -1
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return (c1 != c2)
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}
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function array_get(array_idx, array_member, array_return)
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{
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array_return = array[array_idx][array_member]
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if ("" == array_return) {
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printf("%s: index [%s] without %s\n",
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FILENAME, array_idx, array_member) > "/dev/stderr"
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exit 1
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}
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return array_return
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}
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function array_seq(array_idx)
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{
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if ("seq" in array[array_idx])
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return array[array_idx]["seq"]
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index_seq++
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array[array_idx]["seq"] = index_seq
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return index_seq
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}
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function enter(array_idx)
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{
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if (array_idx in called) {
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printf("%s: index loop detected:", FILENAME) > "/dev/stderr"
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for (item in called)
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printf(" %s", item) > "/dev/stderr"
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print "" > "/dev/stderr"
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exit 1
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}
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called[array_idx] = 1
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}
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function leave(array_idx, to_return)
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{
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delete called[array_idx]
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return to_return
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}
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function what_is(what_idx, type_idx, special, item, \
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location, prev_location, prev_returned_size)
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{
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enter(what_idx)
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special = array_get(what_idx, "special")
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switch (special) {
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case "base_type":
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switch (array_get(what_idx, "encoding")) {
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case 5: # signed
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printf("int%s_t ",
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8 * array_get(what_idx, "byte_size"))
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break
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case 7: # unsigned
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printf("uint%s_t ",
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8 * array_get(what_idx, "byte_size"))
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break
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default: # float, signed/unsigned char
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printf("%s ", array_get(what_idx, "name"))
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break
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}
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returned_size = array_get(what_idx, "byte_size")
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break
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case "enumeration_type":
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returned_size = array_get(what_idx, "byte_size")
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printf("uint%s_t ", 8 * returned_size)
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break
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case "pointer_type":
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printf("mpers_ptr_t ")
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returned_size = array_get(what_idx, "byte_size")
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break
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case "array_type":
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type_idx = array_get(what_idx, "type")
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what_is(type_idx)
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to_return = array[what_idx]["upper_bound"]
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if ("" == to_return)
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to_return = 0
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returned_size = to_return * returned_size
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return leave(what_idx, to_return)
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break
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case "structure_type":
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print "struct {"
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prev_location = 0
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location = 0
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returned_size = 0
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prev_returned_size = 0
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for (item in array) {
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if ("parent" in array[item] && \
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array_get(item, "parent") == what_idx) {
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location = array_get(item, "location")
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loc_diff = location - prev_location - \
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prev_returned_size
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if (loc_diff != 0) {
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printf("unsigned char mpers_%s_%s[%s];\n",
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"filler", array_seq(item), loc_diff)
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}
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prev_location = location
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returned = what_is(item)
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prev_returned_size = returned_size
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printf("%s", array[item]["name"])
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if ("" != returned) {
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printf("[%s]", returned)
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}
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print ";"
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}
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}
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returned_size = array_get(what_idx, "byte_size")
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loc_diff = returned_size - prev_location - prev_returned_size
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if (loc_diff != 0) {
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printf("unsigned char mpers_%s_%s[%s];\n",
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"end_filler", array_seq(item), loc_diff)
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}
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printf("} ATTRIBUTE_PACKED ")
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break
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case "union_type":
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print "union {"
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for (item in array) {
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if ("parent" in array[item] && \
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array_get(item, "parent") == what_idx) {
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returned = what_is(item)
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printf("%s", array_get(item, "name"))
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if ("" != returned) {
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printf("[%s]", returned)
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}
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print ";"
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}
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}
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printf("} ")
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returned_size = array_get(what_idx, "byte_size")
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break
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case "typedef":
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type_idx = array_get(what_idx, "type")
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return leave(what_idx, what_is(type_idx))
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break
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case "member":
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type_idx = array_get(what_idx, "type")
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return leave(what_idx, what_is(type_idx))
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break
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default:
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type_idx = array_get(what_idx, "type")
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what_is(type_idx)
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break
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}
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return leave(what_idx, "")
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}
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BEGIN {
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match(ARCH_FLAG, /[[:digit:]]+/, temparray)
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default_pointer_size = temparray[0] / 8
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print "#include <inttypes.h>"
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}
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/^<[[:xdigit:]]+>/ {
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match($0, /([[:alnum:]]+)><([[:alnum:]]+)/, matches)
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level = matches[1]
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idx = "0x" matches[2]
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array[idx]["idx"] = idx
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parent[level] = idx
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}
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/^DW_AT_data_member_location/ {
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if (!match($0, /\(DW_OP_plus_uconst:[[:space:]]+([[:digit:]]+)\)/, temparray))
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match($0, /([[:digit:]]+)/, temparray)
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array[idx]["location"] = temparray[1]
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}
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/^DW_AT_name/ {
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match($0, /:[[:space:]]+([[:alpha:]_][[:alnum:]_[:space:]]*)/, \
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temparray)
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array[idx]["name"] = temparray[1]
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}
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/^DW_AT_byte_size/ {
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match($0, /[[:digit:]]+/, temparray)
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array[idx]["byte_size"] = temparray[0]
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}
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/^DW_AT_encoding/ {
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match($0, /[[:digit:]]+/, temparray)
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array[idx]["encoding"] = temparray[0]
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}
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/^DW_AT_type/ {
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match($0, /:[[:space:]]+<(0x[[:xdigit:]]*)>$/, temparray)
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array[idx]["type"] = temparray[1]
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}
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/^DW_AT_upper_bound/ {
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match($0, /[[:digit:]]+/, temparray)
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array[parent[level-1]]["upper_bound"] = temparray[0] + 1
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}
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/^DW_AT_count/ {
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match($0, /[[:digit:]]+/, temparray)
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array[parent[level-1]]["upper_bound"] = temparray[0]
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}
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/^Abbrev Number:[^(]+\(DW_TAG_/ {
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if (match($0, /typedef|union_type|structure_type|pointer_type\
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|enumeration_type|array_type|base_type|member/, temparray)) {
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array[idx]["special"] = temparray[0]
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if ("pointer_type" == temparray[0])
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array[idx]["byte_size"] = default_pointer_size
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if (level > 1 && "member" == temparray[0])
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array[idx]["parent"] = parent[level-1]
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}
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}
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END {
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PROCINFO["sorted_in"] = "compare_indices"
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for (item in array) {
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if (array[item]["special"] == "pointer_type") {
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print "typedef uint" \
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8 * array_get(item, "byte_size") "_t mpers_ptr_t;"
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break
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}
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}
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for (item in array) {
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if (array[item]["name"] == VAR_NAME) {
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type = array_get(item, "type")
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print "typedef"
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what_is(type)
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name = array_get(type, "name")
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print ARCH_FLAG "_" name ";"
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print "#define MPERS_" \
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ARCH_FLAG "_" name " " \
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ARCH_FLAG "_" name
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break
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}
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}
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}
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