33 lines
2.3 KiB
C
33 lines
2.3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ Permission to use, copy, modify, and/or distribute this software for │
|
|
│ any purpose with or without fee is hereby granted, provided that the │
|
|
│ above copyright notice and this permission notice appear in all copies. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
|
|
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
|
|
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
|
|
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
|
|
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
|
|
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
|
|
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
|
|
│ PERFORMANCE OF THIS SOFTWARE. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/str/str.h"
|
|
#include "tool/build/lib/elfwriter.h"
|
|
|
|
void elfwriter_yoink(struct ElfWriter *elf, const char *symbol) {
|
|
unsigned char *p;
|
|
struct ElfWriterSymRef sym;
|
|
const unsigned char kNopl[8] = "\017\037\004\045\000\000\000\000";
|
|
p = elfwriter_reserve(elf, 8);
|
|
memcpy(p, kNopl, sizeof(kNopl));
|
|
sym = elfwriter_linksym(elf, symbol, ELF64_ST_INFO(STB_GLOBAL, STT_OBJECT),
|
|
STV_HIDDEN);
|
|
elfwriter_appendrela(elf, sizeof(kNopl) - 4, sym, R_X86_64_32, 0);
|
|
elfwriter_commit(elf, sizeof(kNopl));
|
|
}
|