46 lines
2.6 KiB
C
46 lines
2.6 KiB
C
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/*-*- 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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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/calls/struct/stat.h"
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#include "libc/log/check.h"
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#include "libc/runtime/gc.h"
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#include "libc/sysv/consts/map.h"
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#include "libc/sysv/consts/o.h"
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#include "libc/sysv/consts/prot.h"
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#include "libc/x/x.h"
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#include "tool/build/lib/loader.h"
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void LoadDebugSymbols(struct Elf *elf) {
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int fd;
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void *elfmap;
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struct stat st;
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if (elf->ehdr) return;
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DCHECK_NOTNULL(elf->prog);
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if ((fd = open(gc(xstrcat(elf->prog, ".dbg")), O_RDONLY)) != -1) {
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if (fstat(fd, &st) != -1 &&
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(elfmap = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0)) !=
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MAP_FAILED) {
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elf->ehdr = elfmap;
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elf->size = st.st_size;
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}
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close(fd);
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}
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}
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