55bc4164bd
ioctls_sym.sh used to generate and invoke target architecture executables that limited its applicability. After this change, the generated code is just compiled to the target architecture object files and all required information is obtained from the dwarf sections. This approach allows to generate ioctl entries for any target architecture supported by compiler. * maint/ioctls_sym.awk: New file. * maint/ioctls_sym.sh (LC_ALL): Define to C and export. (uname_m): Make configurable. (CFLAGS): Add -gdwarf-2. (LDFLAGS): Remove. Do not use print_ioctlent.c. Change asm-generic/ioctl.h and asm/ioctl.h hook. Dump and process dwarf sections of generated object files. * maint/print_ioctlent.c: Remove.
120 lines
3.9 KiB
Awk
120 lines
3.9 KiB
Awk
#!/bin/gawk -f
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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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# Copyright (c) 2017 Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org>
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# Copyright (c) 2015-2017 The strace developers.
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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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BEGIN {
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dirmap[2^8] = "_IOC_NONE"
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dirmap[2^9] = "_IOC_READ"
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dirmap[2^10] = "_IOC_WRITE"
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dirmap[2^10 + 2^9] = "_IOC_READ|_IOC_WRITE"
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}
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function array_get(array_idx, array_member, \
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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 dir2str(dir, \
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r) {
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r = dirmap[dir]
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if (r == "") {
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printf("%s: ioctl direction %d is not known\n",
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FILENAME, dir) > "/dev/stderr"
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exit 1
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}
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return r
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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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parent[level] = idx
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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_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[array[idx]["parent"]]["size"] = temparray[0]
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}
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/^DW_AT_count/ {
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match($0, /[[:digit:]]+/, temparray)
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array[array[idx]["parent"]]["size"] = temparray[0] - 1
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}
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/^Abbrev Number:[^(]+\(DW_TAG_/ {
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if (match($0, /member|subrange_type|variable/, temparray)) {
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array[idx]["special"] = temparray[0]
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if (level > 1 && ("member" == temparray[0] ||
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"subrange_type" == 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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for (i in array) {
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if (array[i]["special"] == "variable" &&
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index(array_get(i, "name"), "ioc_") == 1) {
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ioc_name = substr(array_get(i, "name"),
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length("ioc_") + 1)
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type = array_get(i, "type")
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delete sizemap
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for (j in array) {
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if ("parent" in array[j] &&
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type == array_get(j, "parent")) {
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t = array_get(j, "type")
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field_name = array_get(j, "name")
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sizemap[field_name] = \
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array_get(t, "size")
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}
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}
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if (sizemap["d"] == "" ||
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sizemap["n"] == "" ||
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sizemap["s"] == "") {
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printf("%s: failed to parse %s ioctl info\n",
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FILENAME, ioc_name) > "/dev/stderr"
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exit 1
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}
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printf("{ \"%s\", \"%s\", %s, 0x%04x, 0x%02x },\n",
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HEADER_NAME, ioc_name, dir2str(sizemap["d"]),
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sizemap["n"], sizemap["s"])
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}
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}
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}
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