mirror of
https://github.com/jart/cosmopolitan.git
synced 2024-05-16 18:42:39 +00:00
129 lines
4.9 KiB
C
129 lines
4.9 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/calls/internal.h"
|
|
#include "libc/calls/sig.internal.h"
|
|
#include "libc/calls/state.internal.h"
|
|
#include "libc/intrin/describebacktrace.internal.h"
|
|
#include "libc/intrin/strace.internal.h"
|
|
#include "libc/nt/enum/exceptionhandleractions.h"
|
|
#include "libc/nt/enum/signal.h"
|
|
#include "libc/nt/enum/status.h"
|
|
#include "libc/nt/struct/ntexceptionpointers.h"
|
|
#include "libc/nt/thunk/msabi.h"
|
|
#include "libc/sysv/consts/sa.h"
|
|
#include "libc/sysv/consts/sicode.h"
|
|
#include "libc/sysv/consts/sig.h"
|
|
|
|
#ifdef __x86_64__
|
|
|
|
// win32 calls this; we're running inside the thread that crashed
|
|
__msabi unsigned __wincrash(struct NtExceptionPointers *ep) {
|
|
int sig, code;
|
|
|
|
switch (ep->ExceptionRecord->ExceptionCode) {
|
|
case kNtSignalBreakpoint:
|
|
code = TRAP_BRKPT;
|
|
sig = SIGTRAP;
|
|
// Windows seems to be the only operating system that traps INT3 at
|
|
// addressof(INT3) rather than addressof(INT3)+1. So we must adjust
|
|
// RIP to prevent the same INT3 from being trapped forevermore.
|
|
ep->ContextRecord->Rip++;
|
|
break;
|
|
case kNtSignalIllegalInstruction:
|
|
code = ILL_ILLOPC;
|
|
sig = SIGILL;
|
|
break;
|
|
case kNtSignalPrivInstruction:
|
|
code = ILL_PRVOPC;
|
|
sig = SIGILL;
|
|
break;
|
|
case kNtSignalGuardPage:
|
|
case kNtSignalInPageError:
|
|
case kNtStatusStackOverflow:
|
|
code = SEGV_MAPERR;
|
|
sig = SIGSEGV;
|
|
break;
|
|
case kNtSignalAccessViolation:
|
|
code = SEGV_ACCERR;
|
|
sig = SIGSEGV;
|
|
break;
|
|
case kNtSignalInvalidHandle:
|
|
case kNtSignalInvalidParameter:
|
|
case kNtSignalAssertionFailure:
|
|
code = SI_USER;
|
|
sig = SIGABRT;
|
|
break;
|
|
case kNtStatusIntegerOverflow:
|
|
code = FPE_INTOVF;
|
|
sig = SIGFPE;
|
|
break;
|
|
case kNtSignalFltDivideByZero:
|
|
code = FPE_FLTDIV;
|
|
sig = SIGFPE;
|
|
break;
|
|
case kNtSignalFltOverflow:
|
|
code = FPE_FLTOVF;
|
|
sig = SIGFPE;
|
|
break;
|
|
case kNtSignalFltUnderflow:
|
|
code = FPE_FLTUND;
|
|
sig = SIGFPE;
|
|
break;
|
|
case kNtSignalFltInexactResult:
|
|
code = FPE_FLTRES;
|
|
sig = SIGFPE;
|
|
break;
|
|
case kNtSignalFltDenormalOperand:
|
|
case kNtSignalFltInvalidOperation:
|
|
case kNtSignalFltStackCheck:
|
|
case kNtSignalIntegerDivideByZero:
|
|
case kNtSignalFloatMultipleFaults:
|
|
case kNtSignalFloatMultipleTraps:
|
|
code = FPE_FLTINV;
|
|
sig = SIGFPE;
|
|
break;
|
|
case kNtSignalDllNotFound:
|
|
case kNtSignalOrdinalNotFound:
|
|
case kNtSignalEntrypointNotFound:
|
|
case kNtSignalDllInitFailed:
|
|
code = SI_KERNEL;
|
|
sig = SIGSYS;
|
|
break;
|
|
default:
|
|
code = ep->ExceptionRecord->ExceptionCode;
|
|
sig = SIGSEGV;
|
|
break;
|
|
}
|
|
|
|
STRACE("win32 vectored exception raising 0x%08Xu %G rip %x bt %s",
|
|
ep->ExceptionRecord->ExceptionCode, sig, ep->ContextRecord->Rip,
|
|
DescribeBacktrace((struct StackFrame *)ep->ContextRecord->Rbp));
|
|
|
|
if (__sighandflags[sig] & SA_SIGINFO) {
|
|
struct Delivery pkg = {kSigOpUnmaskable, sig, code, ep->ContextRecord};
|
|
__sig_tramp(&pkg);
|
|
} else {
|
|
__sig_handle(kSigOpUnmaskable, sig, code, 0);
|
|
}
|
|
|
|
return kNtExceptionContinueExecution;
|
|
}
|
|
|
|
#endif /* __x86_64__ */
|