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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 │
│ │
│ 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/ucontext.h"
#include "libc/nt/enum/exceptionhandleractions.h"
#include "libc/nt/enum/signal.h"
#include "libc/nt/struct/ntexceptionpointers.h"
#include "libc/str/str.h"
textwindows unsigned __wincrash(struct NtExceptionPointers *ep) {
int sig;
struct Goodies {
ucontext_t ctx;
struct siginfo si;
} g;
switch (ep->ExceptionRecord->ExceptionCode) {
case kNtSignalBreakpoint:
sig = SIGTRAP;
break;
case kNtSignalIllegalInstruction:
case kNtSignalPrivInstruction:
sig = SIGILL;
break;
case kNtSignalGuardPage:
case kNtSignalAccessViolation:
case kNtSignalInPageError:
sig = SIGSEGV;
break;
case kNtSignalInvalidHandle:
case kNtSignalInvalidParameter:
case kNtSignalAssertionFailure:
sig = SIGABRT;
break;
case kNtSignalFltDenormalOperand:
case kNtSignalFltDivideByZero:
case kNtSignalFltInexactResult:
case kNtSignalFltInvalidOperation:
case kNtSignalFltOverflow:
case kNtSignalFltStackCheck:
case kNtSignalFltUnderflow:
case kNtSignalIntegerDivideByZero:
case kNtSignalFloatMultipleFaults:
case kNtSignalFloatMultipleTraps:
sig = SIGFPE;
break;
case kNtSignalDllNotFound:
case kNtSignalOrdinalNotFound:
case kNtSignalEntrypointNotFound:
case kNtSignalDllInitFailed:
sig = SIGSYS;
break;
default:
return kNtExceptionContinueSearch;
}
memset(&g, 0, sizeof(g));
ntcontext2linux(&g.ctx, ep->ContextRecord);
return __sigenter(sig, &g.si, &g.ctx) ? kNtExceptionContinueExecution
: kNtExceptionContinueSearch;
}