#include "sanitizer_common/sanitizer_platform.h"
#if SANITIZER_WINDOWS
#include <windows.h>
#include <dbghelp.h>
#include <stdlib.h>
#include "asan_interceptors.h"
#include "asan_internal.h"
#include "asan_report.h"
#include "asan_thread.h"
#include "sanitizer_common/sanitizer_libc.h"
#include "sanitizer_common/sanitizer_mutex.h"
extern "C" {
SANITIZER_INTERFACE_ATTRIBUTE
int __asan_should_detect_stack_use_after_return() {
__asan_init();
return __asan_option_detect_stack_use_after_return;
}
}
namespace __asan {
static bool tsd_key_inited = false;
static __declspec(thread) void *fake_tsd = 0;
void AsanTSDInit(void (*destructor)(void *tsd)) {
tsd_key_inited = true;
}
void *AsanTSDGet() {
CHECK(tsd_key_inited);
return fake_tsd;
}
void AsanTSDSet(void *tsd) {
CHECK(tsd_key_inited);
fake_tsd = tsd;
}
void PlatformTSDDtor(void *tsd) {
AsanThread::TSDDtor(tsd);
}
void DisableReexec() {
}
void MaybeReexec() {
}
void *AsanDoesNotSupportStaticLinkage() {
#if defined(_DEBUG)
#error Please build the runtime with a non-debug CRT: /MD or /MT
#endif
return 0;
}
void AsanCheckDynamicRTPrereqs() {}
void AsanCheckIncompatibleRT() {}
void AsanPlatformThreadInit() {
}
void ReadContextStack(void *context, uptr *stack, uptr *ssize) {
UNIMPLEMENTED();
}
void AsanOnSIGSEGV(int, void *siginfo, void *context) {
UNIMPLEMENTED();
}
static LPTOP_LEVEL_EXCEPTION_FILTER default_seh_handler;
SignalContext SignalContext::Create(void *siginfo, void *context) {
EXCEPTION_RECORD *exception_record = (EXCEPTION_RECORD*)siginfo;
CONTEXT *context_record = (CONTEXT*)context;
uptr pc = (uptr)exception_record->ExceptionAddress;
#ifdef _WIN64
uptr bp = (uptr)context_record->Rbp;
uptr sp = (uptr)context_record->Rsp;
#else
uptr bp = (uptr)context_record->Ebp;
uptr sp = (uptr)context_record->Esp;
#endif
uptr access_addr = exception_record->ExceptionInformation[1];
return SignalContext(context, access_addr, pc, sp, bp);
}
static long WINAPI SEHHandler(EXCEPTION_POINTERS *info) {
EXCEPTION_RECORD *exception_record = info->ExceptionRecord;
CONTEXT *context = info->ContextRecord;
if (exception_record->ExceptionCode == EXCEPTION_ACCESS_VIOLATION ||
exception_record->ExceptionCode == EXCEPTION_IN_PAGE_ERROR) {
const char *description =
(exception_record->ExceptionCode == EXCEPTION_ACCESS_VIOLATION)
? "access-violation"
: "in-page-error";
SignalContext sig = SignalContext::Create(exception_record, context);
ReportSIGSEGV(description, sig);
}
return default_seh_handler(info);
}
extern "C" SANITIZER_INTERFACE_ATTRIBUTE
int __asan_set_seh_filter() {
auto prev_seh_handler = SetUnhandledExceptionFilter(SEHHandler);
if (prev_seh_handler != &SEHHandler)
default_seh_handler = prev_seh_handler;
return 0;
}
#if !ASAN_DYNAMIC
#pragma section(".CRT$XIZ", long, read) // NOLINT
static __declspec(allocate(".CRT$XIZ"))
int (*__intercept_seh)() = __asan_set_seh_filter;
#endif
}
#endif // _WIN32