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Clean up more code

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- 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
This commit is contained in:
Justine Tunney 2023-06-18 00:55:09 -07:00
parent afc58a8b41
commit d7c79f43ef
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GPG key ID: BE714B4575D6E328
294 changed files with 912 additions and 1208 deletions
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18
libc/elf/getelfstringtable.c
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@ -18,9 +18,21 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/elf/def.h"
#include "libc/elf/elf.h"
#include "libc/elf/struct/ehdr.h"
#include "libc/elf/struct/shdr.h"
#include "libc/str/str.h"
char *GetElfStringTable(const Elf64_Ehdr *elf, size_t mapsize) {
/**
* Returns pointer to elf string table.
*
* @param elf points to the start of the executable image
* @param mapsize is the number of bytes past `elf` we can access
* @param section_name is usually `".strtab"`, `".dynstr"`, or null
* @return pointer to double-nul terminated string list or null on error
*/
char *GetElfStringTable(const Elf64_Ehdr *elf, //
size_t mapsize, //
const char *section_name) {
int i;
char *name;
Elf64_Shdr *shdr;
@ -28,9 +40,9 @@ char *GetElfStringTable(const Elf64_Ehdr *elf, size_t mapsize) {
if ((shdr = GetElfSectionHeaderAddress(elf, mapsize, i)) &&
shdr->sh_type == SHT_STRTAB &&
(name = GetElfSectionName(elf, mapsize, shdr)) &&
!strcmp(name, ".strtab")) {
(!section_name || !strcmp(name, section_name))) {
return GetElfSectionAddress(elf, mapsize, shdr);
}
}
return NULL;
return 0;
}