| //===--- InterceptTraps.cpp -----------------------------------------------===// |
| // |
| // This source file is part of the Swift.org open source project |
| // |
| // Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors |
| // Licensed under Apache License v2.0 with Runtime Library Exception |
| // |
| // See https://swift.org/LICENSE.txt for license information |
| // See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include <stdio.h> |
| #include <signal.h> |
| #include <string.h> |
| #if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) |
| #include <unistd.h> |
| #endif |
| #if defined(_WIN32) |
| #include <io.h> |
| #include <process.h> |
| #include <stdlib.h> |
| #define WIN32_LEAN_AND_MEAN |
| #include <Windows.h> |
| #endif |
| |
| #include "swift/Runtime/Config.h" |
| |
| static void CrashCatcher(int Sig) { |
| const char *Msg; |
| switch (Sig) { |
| case SIGILL: Msg = "CRASHED: SIGILL\n"; break; |
| case SIGABRT: Msg = "CRASHED: SIGABRT\n"; break; |
| case SIGFPE: Msg = "CRASHED: SIGFPE\n"; break; |
| case SIGSEGV: Msg = "CRASHED: SIGSEGV\n"; break; |
| #if !defined(_WIN32) |
| case SIGTRAP: Msg = "CRASHED: SIGTRAP\n"; break; |
| case SIGBUS: Msg = "CRASHED: SIGBUS\n"; break; |
| case SIGSYS: Msg = "CRASHED: SIGSYS\n"; break; |
| #endif |
| default: Msg = "CRASHED: SIG????\n"; break; |
| } |
| #if defined(_WIN32) |
| _write(_fileno(stderr), Msg, strlen(Msg)); |
| #else |
| write(STDERR_FILENO, Msg, strlen(Msg)); |
| #endif |
| _exit(0); |
| } |
| |
| #if defined(_WIN32) |
| static LONG WINAPI |
| VectoredCrashHandler(PEXCEPTION_POINTERS ExceptionInfo) { |
| switch (ExceptionInfo->ExceptionRecord->ExceptionCode) { |
| case EXCEPTION_ILLEGAL_INSTRUCTION: |
| _write(_fileno(stderr), "CRASHED: SIGTRAP\n", 17); |
| _exit(0); |
| |
| case EXCEPTION_DATATYPE_MISALIGNMENT: |
| _write(_fileno(stderr), "CRASHED: SIGBUS\n", 16); |
| _exit(0); |
| } |
| |
| return EXCEPTION_CONTINUE_SEARCH; |
| } |
| #endif |
| |
| SWIFT_CC(swift) SWIFT_RUNTIME_LIBRARY_VISIBILITY extern "C" |
| void installTrapInterceptor() { |
| // Disable buffering on stdout so that everything is printed before crashing. |
| setbuf(stdout, 0); |
| |
| #if defined(_WIN32) |
| _set_abort_behavior(0, _WRITE_ABORT_MSG); |
| #endif |
| |
| signal(SIGILL, CrashCatcher); |
| signal(SIGABRT, CrashCatcher); |
| signal(SIGFPE, CrashCatcher); |
| signal(SIGSEGV, CrashCatcher); |
| #if defined(_WIN32) |
| AddVectoredExceptionHandler(TRUE, VectoredCrashHandler); |
| #else |
| signal(SIGTRAP, CrashCatcher); |
| signal(SIGBUS, CrashCatcher); |
| signal(SIGSYS, CrashCatcher); |
| #endif |
| } |
| |