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[sanitizer] Move exception code to sanitizer_common.

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Differential Revision: https://reviews.llvm.org/D29458

llvm-svn: 293955
This commit is contained in:
Marcos Pividori 2017-02-02 23:01:51 +00:00
parent 387210c6c8
commit ee22156b78
4 changed files with 57 additions and 29 deletions
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30
compiler-rt/lib/asan/asan_win.cc
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@ -27,6 +27,7 @@
#include "asan_mapping.h"
#include "sanitizer_common/sanitizer_libc.h"
#include "sanitizer_common/sanitizer_mutex.h"
#include "sanitizer_common/sanitizer_win.h"
#include "sanitizer_common/sanitizer_win_defs.h"
using namespace __asan; // NOLINT
@ -236,33 +237,6 @@ void InitializePlatformExceptionHandlers() {
static LPTOP_LEVEL_EXCEPTION_FILTER default_seh_handler;
// Check based on flags if we should report this exception.
static bool ShouldReportDeadlyException(unsigned code) {
switch (code) {
case EXCEPTION_ACCESS_VIOLATION:
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
case EXCEPTION_STACK_OVERFLOW:
case EXCEPTION_DATATYPE_MISALIGNMENT:
case EXCEPTION_IN_PAGE_ERROR:
return common_flags()->handle_segv;
case EXCEPTION_ILLEGAL_INSTRUCTION:
case EXCEPTION_PRIV_INSTRUCTION:
case EXCEPTION_BREAKPOINT:
return common_flags()->handle_sigill;
case EXCEPTION_FLT_DENORMAL_OPERAND:
case EXCEPTION_FLT_DIVIDE_BY_ZERO:
case EXCEPTION_FLT_INEXACT_RESULT:
case EXCEPTION_FLT_INVALID_OPERATION:
case EXCEPTION_FLT_OVERFLOW:
case EXCEPTION_FLT_STACK_CHECK:
case EXCEPTION_FLT_UNDERFLOW:
case EXCEPTION_INT_DIVIDE_BY_ZERO:
case EXCEPTION_INT_OVERFLOW:
return common_flags()->handle_sigfpe;
}
return false;
}
// Return the textual name for this exception.
const char *DescribeSignalOrException(int signo) {
unsigned code = signo;
@ -296,7 +270,7 @@ long __asan_unhandled_exception_filter(EXCEPTION_POINTERS *info) {
CONTEXT *context = info->ContextRecord;
// Continue the search if the signal wasn't deadly.
if (!ShouldReportDeadlyException(exception_record->ExceptionCode))
if (!IsHandledDeadlyException(exception_record->ExceptionCode))
return EXCEPTION_CONTINUE_SEARCH;
// FIXME: Handle EXCEPTION_STACK_OVERFLOW here.

3
compiler-rt/lib/sanitizer_common/CMakeLists.txt
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@ -126,7 +126,8 @@ set(SANITIZER_HEADERS
sanitizer_syscall_generic.inc
sanitizer_syscall_linux_x86_64.inc
sanitizer_syscall_linux_aarch64.inc
sanitizer_thread_registry.h)
sanitizer_thread_registry.h
sanitizer_win.h)
include_directories(..)

27
compiler-rt/lib/sanitizer_common/sanitizer_win.cc
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@ -836,6 +836,33 @@ bool IsHandledDeadlySignal(int signum) {
return false;
}
// Check based on flags if we should handle this exception.
bool IsHandledDeadlyException(DWORD exceptionCode) {
switch (exceptionCode) {
case EXCEPTION_ACCESS_VIOLATION:
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
case EXCEPTION_STACK_OVERFLOW:
case EXCEPTION_DATATYPE_MISALIGNMENT:
case EXCEPTION_IN_PAGE_ERROR:
return common_flags()->handle_segv;
case EXCEPTION_ILLEGAL_INSTRUCTION:
case EXCEPTION_PRIV_INSTRUCTION:
case EXCEPTION_BREAKPOINT:
return common_flags()->handle_sigill;
case EXCEPTION_FLT_DENORMAL_OPERAND:
case EXCEPTION_FLT_DIVIDE_BY_ZERO:
case EXCEPTION_FLT_INEXACT_RESULT:
case EXCEPTION_FLT_INVALID_OPERATION:
case EXCEPTION_FLT_OVERFLOW:
case EXCEPTION_FLT_STACK_CHECK:
case EXCEPTION_FLT_UNDERFLOW:
case EXCEPTION_INT_DIVIDE_BY_ZERO:
case EXCEPTION_INT_OVERFLOW:
return common_flags()->handle_sigfpe;
}
return false;
}
bool IsAccessibleMemoryRange(uptr beg, uptr size) {
SYSTEM_INFO si;
GetNativeSystemInfo(&si);

26
compiler-rt/lib/sanitizer_common/sanitizer_win.h Normal file
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@ -0,0 +1,26 @@
//===-- sanitizer_win.h -----------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Windows-specific declarations.
//
//===----------------------------------------------------------------------===//
#ifndef SANITIZER_WIN_H
#define SANITIZER_WIN_H
#include "sanitizer_platform.h"
#if SANITIZER_WINDOWS
#include "sanitizer_internal_defs.h"
namespace __sanitizer {
// Check based on flags if we should handle the exception.
bool IsHandledDeadlyException(DWORD exceptionCode);
} // namespace __sanitizer
#endif // SANITIZER_WINDOWS
#endif // SANITIZER_WIN_H