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Get us closer to building busybox

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This change undefines __linux__ and adds APIs like clock_settime(). The
gosh darned getopt_long() API has been reintroduced, thanks to OpenBSD.
This commit is contained in:
Justine Tunney 2023-06-18 04:02:01 -07:00
parent 5ac522f0de
commit 0409096658
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GPG key ID: BE714B4575D6E328
52 changed files with 914 additions and 37 deletions
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12
tool/build/fixupobj.c
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@ -244,8 +244,16 @@ static void OptimizePatchableFunctionEntries(void) {
if (!(p = GetElfSectionAddress(elf, esize, shdr))) {
Die("elf header overflow");
}
p += syms[i].st_value - shdr->sh_addr;
pe = p + syms[i].st_size;
if (syms[i].st_value < shdr->sh_addr) {
Die("elf symbol beneath section");
}
if ((syms[i].st_value - shdr->sh_addr > esize ||
(p += syms[i].st_value - shdr->sh_addr) >=
(unsigned char *)elf + esize) ||
(syms[i].st_size >= esize ||
(pe = p + syms[i].st_size) >= (unsigned char *)elf + esize)) {
Die("elf symbol overflow");
};
for (; p + 1 < pe; p += n) {
if (p[0] != 0x90) break;
if (p[1] != 0x90) break;