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Improve debug binary location detection

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Justine Tunney 2023-11-16 23:26:05 -08:00
parent 68c7c9c1e0
commit 7a9e176ecf
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17 changed files with 92 additions and 50 deletions
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libc/calls/unassert.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 2023 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/assert.h"
#include "libc/calls/calls.h"
#include "libc/calls/struct/sigset.internal.h"
#include "libc/errno.h"
#include "libc/fmt/itoa.h"
#include "libc/intrin/describebacktrace.internal.h"
#include "libc/runtime/runtime.h"
#include "libc/runtime/symbols.internal.h"
/**
* Handles unassert() failure.
*
* Unlike __assert_fail() this doesn't call abort() and instead uses a
* trapping assembly opcode. Standards require that abort() do a great
* number of things. By doing this instead, we guarantee the backtrace
* reported to the signal handler is clean and focused on the problem.
*/
void(unassert)(const char *expr, const char *file, int line) {
char ibuf[12];
sigset_t m = __sig_block();
FormatInt32(ibuf, line);
tinyprint(2, file, ":", ibuf, ": \e[31;1munassert(", expr,
") failed\e[0m (cosmoaddr2line ", FindDebugBinary(), " ",
DescribeBacktrace(__builtin_frame_address(0)), ")\n", NULL);
__sig_unblock(m);
notpossible;
}