mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-06-05 04:02:28 +00:00
d7c79f43ef
- Found some bugs in LLVM compiler-rt library - The useless LIBC_STUBS package is now deleted - Improve the overflow checking story even further - Get chibicc tests working in MODE=dbg mode again - The libc/isystem/ headers now have correctly named guards
48 lines
2.8 KiB
C
48 lines
2.8 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/elf/def.h"
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#include "libc/elf/elf.h"
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#include "libc/elf/struct/ehdr.h"
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#include "libc/elf/struct/shdr.h"
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#include "libc/str/str.h"
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/**
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* Returns pointer to elf string table.
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*
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* @param elf points to the start of the executable image
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* @param mapsize is the number of bytes past `elf` we can access
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* @param section_name is usually `".strtab"`, `".dynstr"`, or null
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* @return pointer to double-nul terminated string list or null on error
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*/
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char *GetElfStringTable(const Elf64_Ehdr *elf, //
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size_t mapsize, //
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const char *section_name) {
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int i;
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char *name;
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Elf64_Shdr *shdr;
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for (i = 0; i < elf->e_shnum; ++i) {
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if ((shdr = GetElfSectionHeaderAddress(elf, mapsize, i)) &&
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shdr->sh_type == SHT_STRTAB &&
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(name = GetElfSectionName(elf, mapsize, shdr)) &&
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(!section_name || !strcmp(name, section_name))) {
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return GetElfSectionAddress(elf, mapsize, shdr);
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}
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}
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return 0;
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}
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