mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
5e8ae2d5bc
Continuous Integration (via runit and runitd) is now re-enabled on win7 and win10. The `make test` command, which runs the tests on all systems is now the fastest and most stable it's been since the project started. UBSAN is now enabled in MODE=dbg in addition to ASAN. Many instances of undefined behavior have been removed. Mostly things like passing a NULL argument to memcpy(), which works fine with Cosmopolitan Libc, but that doesn't prevents the compiler from being unhappy. There was an issue w/ GNU make where static analysis claims a sprintf() call can overflow. We also now have nicer looking crash reports on Windows since uname should now be supported and msys64 addr2line works reliably.
107 lines
4.1 KiB
C
107 lines
4.1 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/internal.h"
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#include "libc/calls/strace.internal.h"
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#include "libc/calls/typedef/sigaction_f.h"
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#include "libc/calls/ucontext.h"
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#include "libc/nt/enum/exceptionhandleractions.h"
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#include "libc/nt/enum/signal.h"
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#include "libc/nt/struct/ntexceptionpointers.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/sicode.h"
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textwindows unsigned __wincrash(struct NtExceptionPointers *ep) {
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int sig, rva, code;
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struct Goodies {
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ucontext_t ctx;
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struct siginfo si;
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} g;
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STRACE("__wincrash");
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switch (ep->ExceptionRecord->ExceptionCode) {
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case kNtSignalBreakpoint:
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code = TRAP_BRKPT;
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sig = SIGTRAP;
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break;
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case kNtSignalIllegalInstruction:
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code = ILL_ILLOPC;
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sig = SIGILL;
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break;
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case kNtSignalPrivInstruction:
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code = ILL_PRVOPC;
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sig = SIGILL;
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break;
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case kNtSignalGuardPage:
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case kNtSignalInPageError:
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code = SEGV_MAPERR;
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sig = SIGSEGV;
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break;
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case kNtSignalAccessViolation:
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code = SEGV_ACCERR;
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sig = SIGSEGV;
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break;
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case kNtSignalInvalidHandle:
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case kNtSignalInvalidParameter:
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case kNtSignalAssertionFailure:
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code = SI_USER;
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sig = SIGABRT;
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break;
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case kNtSignalFltDivideByZero:
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code = FPE_FLTDIV;
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sig = SIGFPE;
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break;
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case kNtSignalFltOverflow:
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code = FPE_FLTOVF;
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sig = SIGFPE;
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break;
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case kNtSignalFltUnderflow:
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code = FPE_FLTUND;
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sig = SIGFPE;
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break;
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case kNtSignalFltInexactResult:
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code = FPE_FLTRES;
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sig = SIGFPE;
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break;
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case kNtSignalFltDenormalOperand:
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case kNtSignalFltInvalidOperation:
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case kNtSignalFltStackCheck:
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case kNtSignalIntegerDivideByZero:
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case kNtSignalFloatMultipleFaults:
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case kNtSignalFloatMultipleTraps:
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code = FPE_FLTINV;
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sig = SIGFPE;
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break;
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case kNtSignalDllNotFound:
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case kNtSignalOrdinalNotFound:
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case kNtSignalEntrypointNotFound:
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case kNtSignalDllInitFailed:
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code = SI_KERNEL;
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sig = SIGSYS;
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break;
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default:
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return kNtExceptionContinueSearch;
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}
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bzero(&g, sizeof(g));
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g.si.si_code = code;
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rva = __sighandrvas[sig];
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if (rva >= kSigactionMinRva) {
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ntcontext2linux(&g.ctx, ep->ContextRecord);
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((sigaction_f)(_base + rva))(sig, &g.si, &g.ctx);
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}
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return kNtExceptionContinueExecution;
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}
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