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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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16
libc/elf/iself64binary.c
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@ -16,12 +16,20 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/elf/def.h"
#include "libc/elf/elf.h"
#include "libc/str/str.h"
#include "libc/elf/struct/ehdr.h"
#include "libc/intrin/bits.h"
/**
* Returns true if `elf` is a 64-bit elf executable.
*
* @param elf points to the start of the executable image
* @param mapsize is the number of bytes past `elf` we can access
* @return true if elf header looks legit
*/
bool IsElf64Binary(const Elf64_Ehdr *elf, size_t mapsize) {
if (mapsize < sizeof(Elf64_Ehdr)) return false;
if (memcmp(elf->e_ident, ELFMAG, 4)) return false;
return (elf->e_ident[EI_CLASS] == ELFCLASSNONE ||
elf->e_ident[EI_CLASS] == ELFCLASS64);
if (READ32LE(elf->e_ident) != READ32LE(ELFMAG)) return false;
return elf->e_ident[EI_CLASS] != ELFCLASS32;
}