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Get address sanitizer mostly working

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Justine Tunney 2020-09-03 05:44:37 -07:00
parent 1f1f3cd477
commit 7327c345f9
149 changed files with 3777 additions and 3457 deletions
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libc/log/backtrace3.c Normal file
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/*-*- 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 │
│ │
│ This program is free software; you can redistribute it and/or modify │
│ it under the terms of the GNU General Public License as published by │
│ the Free Software Foundation; version 2 of the License. │
│ │
│ This program is distributed in the hope that it will be useful, but │
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
│ General Public License for more details. │
│ │
│ You should have received a copy of the GNU General Public License │
│ along with this program; if not, write to the Free Software │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/alg/bisectcarleft.h"
#include "libc/bits/weaken.h"
#include "libc/fmt/fmt.h"
#include "libc/log/backtrace.h"
#include "libc/macros.h"
#include "libc/nexgen32e/gc.h"
#include "libc/nexgen32e/stackframe.h"
#include "libc/runtime/symbols.h"
#include "libc/stdio/stdio.h"
static char *FormatAddress(FILE *f, const struct SymbolTable *st, intptr_t addr,
char *out, unsigned size, bool symbolic) {
int64_t addend;
const char *name;
const struct Symbol *symbol;
if (st->count && ((intptr_t)addr >= (intptr_t)&_base &&
(intptr_t)addr <= (intptr_t)&_end && symbolic)) {
symbol = &st->symbols[bisectcarleft((const int32_t(*)[2])st->symbols,
st->count, addr - st->addr_base - 1)];
addend = addr - st->addr_base - symbol->addr_rva;
name = &st->name_base[symbol->name_rva];
snprintf(out, size, "%s%c%#x", name, addend >= 0 ? '+' : '-', ABS(addend));
} else {
snprintf(out, size, "%p", addr);
}
return out;
}
int PrintBacktraceUsingSymbols(FILE *f, const struct StackFrame *bp,
struct SymbolTable *symbols) {
size_t gi;
char buf[256];
intptr_t addr;
struct Garbages *garbage;
const struct StackFrame *frame;
if (!symbols) return -1;
garbage = weaken(g_garbage);
gi = garbage ? garbage->i : 0;
for (frame = bp; frame; frame = frame->next) {
addr = frame->addr;
if (addr == weakaddr("CollectGarbage")) {
do {
--gi;
} while ((addr = garbage->p[gi].ret) == weakaddr("CollectGarbage"));
}
fprintf(f, "%p %p %s\n", frame, addr,
FormatAddress(f, symbols, addr, buf, sizeof(buf), true));
}
return 0;
}