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//===-- sanitizer_win.cc --------------------------------------------------===//
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is shared between AddressSanitizer and ThreadSanitizer
// run-time libraries and implements windows-specific functions from
// sanitizer_libc.h.
//===----------------------------------------------------------------------===//
#ifdef _WIN32
#include <windows.h>
#include "sanitizer_common.h"
#include "sanitizer_libc.h"
namespace __sanitizer {
// --------------------- sanitizer_common.h
int GetPid() {
return GetProcessId(GetCurrentProcess());
}
uptr GetThreadSelf() {
return GetCurrentThreadId();
}
void GetThreadStackTopAndBottom(bool at_initialization, uptr *stack_top,
uptr *stack_bottom) {
CHECK(stack_top);
CHECK(stack_bottom);
MEMORY_BASIC_INFORMATION mbi;
CHECK_NE(VirtualQuery(&mbi /* on stack */, &mbi, sizeof(mbi)), 0);
// FIXME: is it possible for the stack to not be a single allocation?
// Are these values what ASan expects to get (reserved, not committed;
// including stack guard page) ?
*stack_top = (uptr)mbi.BaseAddress + mbi.RegionSize;
*stack_bottom = (uptr)mbi.AllocationBase;
}
void *MmapOrDie(uptr size, const char *mem_type) {
void *rv = VirtualAlloc(0, size, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
if (rv == 0) {
Report("ERROR: Failed to allocate 0x%zx (%zd) bytes of %s\n",
size, size, mem_type);
CHECK("unable to mmap" && 0);
}
return rv;
}
void UnmapOrDie(void *addr, uptr size) {
if (VirtualFree(addr, size, MEM_DECOMMIT) == 0) {
Report("ERROR: Failed to deallocate 0x%zx (%zd) bytes at address %p\n",
size, size, addr);
CHECK("unable to unmap" && 0);
}
}
void *MmapFixedNoReserve(uptr fixed_addr, uptr size) {
return VirtualAlloc((LPVOID)fixed_addr, size,
MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
}
void *Mprotect(uptr fixed_addr, uptr size) {
return VirtualAlloc((LPVOID)fixed_addr, size,
MEM_RESERVE | MEM_COMMIT, PAGE_NOACCESS);
}
bool MemoryRangeIsAvailable(uptr range_start, uptr range_end) {
// FIXME: shall we do anything here on Windows?
return true;
}
void *MapFileToMemory(const char *file_name, uptr *buff_size) {
UNIMPLEMENTED();
return 0;
}
const char *GetEnv(const char *name) {
static char env_buffer[32767] = {};
// Note: this implementation stores the result in a static buffer so we only
// allow it to be called just once.
static bool called_once = false;
if (called_once)
UNIMPLEMENTED();
called_once = true;
DWORD rv = GetEnvironmentVariableA(name, env_buffer, sizeof(env_buffer));
if (rv > 0 && rv < sizeof(env_buffer))
return env_buffer;
return 0;
}
const char *GetPwd() {
UNIMPLEMENTED();
return 0;
}
void DumpProcessMap() {
UNIMPLEMENTED();
}
void DisableCoreDumper() {
UNIMPLEMENTED();
}
void ReExec() {
UNIMPLEMENTED();
}
bool StackSizeIsUnlimited() {
UNIMPLEMENTED();
return false;
}
void SetStackSizeLimitInBytes(uptr limit) {
UNIMPLEMENTED();
}
void SleepForSeconds(int seconds) {
Sleep(seconds * 1000);
}
void SleepForMillis(int millis) {
Sleep(millis);
}
void Exit(int exitcode) {
_exit(exitcode);
}
void Abort() {
abort();
_exit(-1); // abort is not NORETURN on Windows.
}
int Atexit(void (*function)(void)) {
return atexit(function);
}
// ------------------ sanitizer_libc.h
void *internal_mmap(void *addr, uptr length, int prot, int flags,
int fd, u64 offset) {
UNIMPLEMENTED();
return 0;
}
int internal_munmap(void *addr, uptr length) {
UNIMPLEMENTED();
return 0;
}
int internal_close(fd_t fd) {
UNIMPLEMENTED();
return 0;
}
fd_t internal_open(const char *filename, bool write) {
UNIMPLEMENTED();
return 0;
}
uptr internal_read(fd_t fd, void *buf, uptr count) {
UNIMPLEMENTED();
return 0;
}
uptr internal_write(fd_t fd, const void *buf, uptr count) {
if (fd != 2)
UNIMPLEMENTED();
HANDLE err = GetStdHandle(STD_ERROR_HANDLE);
if (err == 0)
return 0; // FIXME: this might not work on some apps.
DWORD ret;
if (!WriteFile(err, buf, count, &ret, 0))
return 0;
return ret;
}
uptr internal_filesize(fd_t fd) {
UNIMPLEMENTED();
return 0;
}
int internal_dup2(int oldfd, int newfd) {
UNIMPLEMENTED();
return 0;
}
uptr internal_readlink(const char *path, char *buf, uptr bufsize) {
UNIMPLEMENTED();
return 0;
}
int internal_sched_yield() {
UNIMPLEMENTED();
return 0;
}
} // namespace __sanitizer
#endif // _WIN32
|
