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Make improvements to cosmocc toolchain

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Justine Tunney 2023-06-10 15:50:01 -07:00
parent 8ff48201ca
commit 2676ec55de
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GPG key ID: BE714B4575D6E328
8 changed files with 205 additions and 117 deletions
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44
libc/intrin/assertfail.greg.c
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@ -18,49 +18,15 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/assert.h"
#include "libc/atomic.h"
#include "libc/calls/state.internal.h"
#include "libc/calls/syscall-sysv.internal.h"
#include "libc/errno.h"
#include "libc/intrin/atomic.h"
#include "libc/intrin/kprintf.h"
#include "libc/intrin/weaken.h"
#include "libc/log/backtrace.internal.h"
#include "libc/log/internal.h"
#include "libc/runtime/internal.h"
#include "libc/runtime/runtime.h"
#include "libc/runtime/symbols.internal.h"
#include "libc/thread/thread.h"
#include "libc/thread/tls.h"
relegated void __assert_fail(const char *expr, const char *file, int line) {
int me, owner;
static atomic_int once;
privileged void __assert_fail(const char *expr, const char *file, int line) {
static atomic_bool once;
if (!__assert_disable) {
strace_enabled(-1);
ftrace_enabled(-1);
owner = 0;
me = __tls_enabled ? __get_tls()->tib_tid : __pid;
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, 0);
kprintf("%s:%d: assert(%s) failed (tid %d) %m\n", file, line, expr, me);
if (__vforked ||
atomic_compare_exchange_strong_explicit(
&once, &owner, me, memory_order_relaxed, memory_order_relaxed)) {
__restore_tty();
if (_weaken(ShowBacktrace)) {
_weaken(ShowBacktrace)(2, __builtin_frame_address(0));
} else if (_weaken(PrintBacktraceUsingSymbols) &&
_weaken(GetSymbolTable)) {
_weaken(PrintBacktraceUsingSymbols)(2, __builtin_frame_address(0),
_weaken(GetSymbolTable)());
} else {
kprintf("can't backtrace b/c `ShowCrashReports` not linked\n");
}
_Exitr(23);
} else if (owner == me) {
kprintf("assert failed while failing\n");
_Exitr(24);
} else {
_Exit1(25);
if (!atomic_exchange(&once, true)) {
kprintf("%s:%d: assert(%s) failed (tid %P) %m\n", file, line, expr);
}
__builtin_trap();
}
}