696d846a56
libsanitizer/ 2015-10-20 Maxim Ostapenko <m.ostapenko@partner.samsung.com> * All source files: Merge from upstream r250806. * configure.ac (link_sanitizer_common): Add -lrt flag. * configure.tgt: Enable TSAN and LSAN for aarch64-linux targets. Set CXX_ABI_NEEDED=true for darwin. * asan/Makefile.am (asan_files): Add new files. (DEFS): Add DCAN_SANITIZE_UB=0 and remove unused and legacy DASAN_FLEXIBLE_MAPPING_AND_OFFSET=0. * asan/Makefile.in: Regenerate. * ubsan/Makefile.am (ubsan_files): Add new files. (DEFS): Add DCAN_SANITIZE_UB=1. (libubsan_la_LIBADD): Add -lc++abi if CXX_ABI_NEEDED is true. * ubsan/Makefile.in: Regenerate. * tsan/Makefile.am (tsan_files): Add new files. (DEFS): Add DCAN_SANITIZE_UB=0. * tsan/Makefile.in: Regenerate. * sanitizer_common/Makefile.am (sanitizer_common_files): Add new files. * sanitizer_common/Makefile.in: Regenerate. * asan/libtool-version: Bump the libasan SONAME. From-SVN: r229111
763 lines
22 KiB
C++
763 lines
22 KiB
C++
//===-- sanitizer_win.cc --------------------------------------------------===//
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is shared between AddressSanitizer and ThreadSanitizer
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// run-time libraries and implements windows-specific functions from
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// sanitizer_libc.h.
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//===----------------------------------------------------------------------===//
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#include "sanitizer_platform.h"
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#if SANITIZER_WINDOWS
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#define WIN32_LEAN_AND_MEAN
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#define NOGDI
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#include <windows.h>
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#include <dbghelp.h>
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#include <io.h>
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#include <psapi.h>
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#include <stdlib.h>
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#include "sanitizer_common.h"
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#include "sanitizer_libc.h"
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#include "sanitizer_mutex.h"
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#include "sanitizer_placement_new.h"
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#include "sanitizer_stacktrace.h"
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namespace __sanitizer {
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#include "sanitizer_syscall_generic.inc"
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// --------------------- sanitizer_common.h
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uptr GetPageSize() {
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// FIXME: there is an API for getting the system page size (GetSystemInfo or
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// GetNativeSystemInfo), but if we use it here we get test failures elsewhere.
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return 1U << 14;
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}
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uptr GetMmapGranularity() {
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return 1U << 16; // FIXME: is this configurable?
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}
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uptr GetMaxVirtualAddress() {
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SYSTEM_INFO si;
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GetSystemInfo(&si);
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return (uptr)si.lpMaximumApplicationAddress;
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}
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bool FileExists(const char *filename) {
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return ::GetFileAttributesA(filename) != INVALID_FILE_ATTRIBUTES;
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}
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uptr internal_getpid() {
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return GetProcessId(GetCurrentProcess());
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}
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// In contrast to POSIX, on Windows GetCurrentThreadId()
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// returns a system-unique identifier.
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uptr GetTid() {
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return GetCurrentThreadId();
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}
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uptr GetThreadSelf() {
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return GetTid();
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}
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#if !SANITIZER_GO
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void GetThreadStackTopAndBottom(bool at_initialization, uptr *stack_top,
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uptr *stack_bottom) {
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CHECK(stack_top);
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CHECK(stack_bottom);
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MEMORY_BASIC_INFORMATION mbi;
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CHECK_NE(VirtualQuery(&mbi /* on stack */, &mbi, sizeof(mbi)), 0);
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// FIXME: is it possible for the stack to not be a single allocation?
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// Are these values what ASan expects to get (reserved, not committed;
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// including stack guard page) ?
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*stack_top = (uptr)mbi.BaseAddress + mbi.RegionSize;
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*stack_bottom = (uptr)mbi.AllocationBase;
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}
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#endif // #if !SANITIZER_GO
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void *MmapOrDie(uptr size, const char *mem_type) {
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void *rv = VirtualAlloc(0, size, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
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if (rv == 0)
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ReportMmapFailureAndDie(size, mem_type, GetLastError());
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return rv;
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}
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void UnmapOrDie(void *addr, uptr size) {
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if (!size || !addr)
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return;
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if (VirtualFree(addr, size, MEM_DECOMMIT) == 0) {
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Report("ERROR: %s failed to "
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"deallocate 0x%zx (%zd) bytes at address %p (error code: %d)\n",
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SanitizerToolName, size, size, addr, GetLastError());
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CHECK("unable to unmap" && 0);
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}
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}
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void *MmapFixedNoReserve(uptr fixed_addr, uptr size, const char *name) {
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// FIXME: is this really "NoReserve"? On Win32 this does not matter much,
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// but on Win64 it does.
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(void)name; // unsupported
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void *p = VirtualAlloc((LPVOID)fixed_addr, size,
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MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
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if (p == 0)
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Report("ERROR: %s failed to "
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"allocate %p (%zd) bytes at %p (error code: %d)\n",
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SanitizerToolName, size, size, fixed_addr, GetLastError());
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return p;
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}
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void *MmapFixedOrDie(uptr fixed_addr, uptr size) {
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return MmapFixedNoReserve(fixed_addr, size);
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}
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void *MmapNoReserveOrDie(uptr size, const char *mem_type) {
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// FIXME: make this really NoReserve?
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return MmapOrDie(size, mem_type);
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}
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void *MmapNoAccess(uptr fixed_addr, uptr size, const char *name) {
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(void)name; // unsupported
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void *res = VirtualAlloc((LPVOID)fixed_addr, size,
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MEM_RESERVE | MEM_COMMIT, PAGE_NOACCESS);
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if (res == 0)
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Report("WARNING: %s failed to "
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"mprotect %p (%zd) bytes at %p (error code: %d)\n",
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SanitizerToolName, size, size, fixed_addr, GetLastError());
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return res;
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}
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bool MprotectNoAccess(uptr addr, uptr size) {
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DWORD old_protection;
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return VirtualProtect((LPVOID)addr, size, PAGE_NOACCESS, &old_protection);
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}
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void FlushUnneededShadowMemory(uptr addr, uptr size) {
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// This is almost useless on 32-bits.
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// FIXME: add madvise-analog when we move to 64-bits.
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}
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void NoHugePagesInRegion(uptr addr, uptr size) {
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// FIXME: probably similar to FlushUnneededShadowMemory.
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}
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void DontDumpShadowMemory(uptr addr, uptr length) {
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// This is almost useless on 32-bits.
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// FIXME: add madvise-analog when we move to 64-bits.
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}
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bool MemoryRangeIsAvailable(uptr range_start, uptr range_end) {
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MEMORY_BASIC_INFORMATION mbi;
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CHECK(VirtualQuery((void *)range_start, &mbi, sizeof(mbi)));
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return mbi.Protect == PAGE_NOACCESS &&
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(uptr)mbi.BaseAddress + mbi.RegionSize >= range_end;
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}
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void *MapFileToMemory(const char *file_name, uptr *buff_size) {
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UNIMPLEMENTED();
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}
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void *MapWritableFileToMemory(void *addr, uptr size, fd_t fd, OFF_T offset) {
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UNIMPLEMENTED();
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}
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static const int kMaxEnvNameLength = 128;
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static const DWORD kMaxEnvValueLength = 32767;
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namespace {
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struct EnvVariable {
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char name[kMaxEnvNameLength];
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char value[kMaxEnvValueLength];
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};
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} // namespace
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static const int kEnvVariables = 5;
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static EnvVariable env_vars[kEnvVariables];
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static int num_env_vars;
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const char *GetEnv(const char *name) {
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// Note: this implementation caches the values of the environment variables
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// and limits their quantity.
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for (int i = 0; i < num_env_vars; i++) {
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if (0 == internal_strcmp(name, env_vars[i].name))
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return env_vars[i].value;
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}
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CHECK_LT(num_env_vars, kEnvVariables);
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DWORD rv = GetEnvironmentVariableA(name, env_vars[num_env_vars].value,
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kMaxEnvValueLength);
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if (rv > 0 && rv < kMaxEnvValueLength) {
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CHECK_LT(internal_strlen(name), kMaxEnvNameLength);
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internal_strncpy(env_vars[num_env_vars].name, name, kMaxEnvNameLength);
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num_env_vars++;
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return env_vars[num_env_vars - 1].value;
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}
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return 0;
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}
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const char *GetPwd() {
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UNIMPLEMENTED();
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}
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u32 GetUid() {
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UNIMPLEMENTED();
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}
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namespace {
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struct ModuleInfo {
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const char *filepath;
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uptr base_address;
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uptr end_address;
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};
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int CompareModulesBase(const void *pl, const void *pr) {
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const ModuleInfo *l = (ModuleInfo *)pl, *r = (ModuleInfo *)pr;
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if (l->base_address < r->base_address)
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return -1;
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return l->base_address > r->base_address;
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}
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} // namespace
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#ifndef SANITIZER_GO
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void DumpProcessMap() {
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Report("Dumping process modules:\n");
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InternalScopedBuffer<LoadedModule> modules(kMaxNumberOfModules);
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uptr num_modules =
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GetListOfModules(modules.data(), kMaxNumberOfModules, nullptr);
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InternalScopedBuffer<ModuleInfo> module_infos(num_modules);
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for (size_t i = 0; i < num_modules; ++i) {
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module_infos[i].filepath = modules[i].full_name();
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module_infos[i].base_address = modules[i].base_address();
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module_infos[i].end_address = modules[i].ranges().next()->end;
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}
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qsort(module_infos.data(), num_modules, sizeof(ModuleInfo),
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CompareModulesBase);
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for (size_t i = 0; i < num_modules; ++i) {
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const ModuleInfo &mi = module_infos[i];
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if (mi.end_address != 0) {
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Printf("\t%p-%p %s\n", mi.base_address, mi.end_address,
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mi.filepath[0] ? mi.filepath : "[no name]");
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} else if (mi.filepath[0]) {
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Printf("\t??\?-??? %s\n", mi.filepath);
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} else {
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Printf("\t???\n");
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}
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}
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}
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#endif
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void DisableCoreDumperIfNecessary() {
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// Do nothing.
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}
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void ReExec() {
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UNIMPLEMENTED();
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}
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void PrepareForSandboxing(__sanitizer_sandbox_arguments *args) {
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#if !SANITIZER_GO
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CovPrepareForSandboxing(args);
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#endif
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}
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bool StackSizeIsUnlimited() {
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UNIMPLEMENTED();
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}
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void SetStackSizeLimitInBytes(uptr limit) {
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UNIMPLEMENTED();
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}
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bool AddressSpaceIsUnlimited() {
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UNIMPLEMENTED();
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}
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void SetAddressSpaceUnlimited() {
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UNIMPLEMENTED();
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}
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bool IsPathSeparator(const char c) {
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return c == '\\' || c == '/';
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}
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bool IsAbsolutePath(const char *path) {
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UNIMPLEMENTED();
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}
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void SleepForSeconds(int seconds) {
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Sleep(seconds * 1000);
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}
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void SleepForMillis(int millis) {
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Sleep(millis);
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}
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u64 NanoTime() {
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return 0;
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}
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void Abort() {
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if (::IsDebuggerPresent())
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__debugbreak();
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internal__exit(3);
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}
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// Read the file to extract the ImageBase field from the PE header. If ASLR is
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// disabled and this virtual address is available, the loader will typically
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// load the image at this address. Therefore, we call it the preferred base. Any
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// addresses in the DWARF typically assume that the object has been loaded at
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// this address.
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static uptr GetPreferredBase(const char *modname) {
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fd_t fd = OpenFile(modname, RdOnly, nullptr);
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if (fd == kInvalidFd)
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return 0;
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FileCloser closer(fd);
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// Read just the DOS header.
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IMAGE_DOS_HEADER dos_header;
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uptr bytes_read;
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if (!ReadFromFile(fd, &dos_header, sizeof(dos_header), &bytes_read) ||
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bytes_read != sizeof(dos_header))
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return 0;
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// The file should start with the right signature.
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if (dos_header.e_magic != IMAGE_DOS_SIGNATURE)
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return 0;
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// The layout at e_lfanew is:
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// "PE\0\0"
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// IMAGE_FILE_HEADER
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// IMAGE_OPTIONAL_HEADER
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// Seek to e_lfanew and read all that data.
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char buf[4 + sizeof(IMAGE_FILE_HEADER) + sizeof(IMAGE_OPTIONAL_HEADER)];
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if (::SetFilePointer(fd, dos_header.e_lfanew, nullptr, FILE_BEGIN) ==
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INVALID_SET_FILE_POINTER)
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return 0;
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if (!ReadFromFile(fd, &buf[0], sizeof(buf), &bytes_read) ||
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bytes_read != sizeof(buf))
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return 0;
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// Check for "PE\0\0" before the PE header.
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char *pe_sig = &buf[0];
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if (internal_memcmp(pe_sig, "PE\0\0", 4) != 0)
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return 0;
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// Skip over IMAGE_FILE_HEADER. We could do more validation here if we wanted.
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IMAGE_OPTIONAL_HEADER *pe_header =
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(IMAGE_OPTIONAL_HEADER *)(pe_sig + 4 + sizeof(IMAGE_FILE_HEADER));
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// Check for more magic in the PE header.
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if (pe_header->Magic != IMAGE_NT_OPTIONAL_HDR_MAGIC)
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return 0;
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// Finally, return the ImageBase.
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return (uptr)pe_header->ImageBase;
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}
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uptr GetListOfModules(LoadedModule *modules, uptr max_modules,
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string_predicate_t filter) {
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HANDLE cur_process = GetCurrentProcess();
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// Query the list of modules. Start by assuming there are no more than 256
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// modules and retry if that's not sufficient.
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HMODULE *hmodules = 0;
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uptr modules_buffer_size = sizeof(HMODULE) * 256;
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DWORD bytes_required;
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while (!hmodules) {
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hmodules = (HMODULE *)MmapOrDie(modules_buffer_size, __FUNCTION__);
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CHECK(EnumProcessModules(cur_process, hmodules, modules_buffer_size,
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&bytes_required));
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if (bytes_required > modules_buffer_size) {
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// Either there turned out to be more than 256 hmodules, or new hmodules
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// could have loaded since the last try. Retry.
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UnmapOrDie(hmodules, modules_buffer_size);
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hmodules = 0;
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modules_buffer_size = bytes_required;
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}
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}
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// |num_modules| is the number of modules actually present,
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// |count| is the number of modules we return.
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size_t nun_modules = bytes_required / sizeof(HMODULE),
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count = 0;
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for (size_t i = 0; i < nun_modules && count < max_modules; ++i) {
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HMODULE handle = hmodules[i];
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MODULEINFO mi;
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if (!GetModuleInformation(cur_process, handle, &mi, sizeof(mi)))
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continue;
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// Get the UTF-16 path and convert to UTF-8.
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wchar_t modname_utf16[kMaxPathLength];
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int modname_utf16_len =
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GetModuleFileNameW(handle, modname_utf16, kMaxPathLength);
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if (modname_utf16_len == 0)
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modname_utf16[0] = '\0';
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char module_name[kMaxPathLength];
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int module_name_len =
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::WideCharToMultiByte(CP_UTF8, 0, modname_utf16, modname_utf16_len + 1,
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&module_name[0], kMaxPathLength, NULL, NULL);
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module_name[module_name_len] = '\0';
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if (filter && !filter(module_name))
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continue;
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uptr base_address = (uptr)mi.lpBaseOfDll;
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uptr end_address = (uptr)mi.lpBaseOfDll + mi.SizeOfImage;
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// Adjust the base address of the module so that we get a VA instead of an
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// RVA when computing the module offset. This helps llvm-symbolizer find the
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// right DWARF CU. In the common case that the image is loaded at it's
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// preferred address, we will now print normal virtual addresses.
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uptr preferred_base = GetPreferredBase(&module_name[0]);
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uptr adjusted_base = base_address - preferred_base;
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LoadedModule *cur_module = &modules[count];
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cur_module->set(module_name, adjusted_base);
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// We add the whole module as one single address range.
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cur_module->addAddressRange(base_address, end_address, /*executable*/ true);
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count++;
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}
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UnmapOrDie(hmodules, modules_buffer_size);
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return count;
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};
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#ifndef SANITIZER_GO
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// We can't use atexit() directly at __asan_init time as the CRT is not fully
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// initialized at this point. Place the functions into a vector and use
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// atexit() as soon as it is ready for use (i.e. after .CRT$XIC initializers).
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InternalMmapVectorNoCtor<void (*)(void)> atexit_functions;
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int Atexit(void (*function)(void)) {
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atexit_functions.push_back(function);
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return 0;
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}
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static int RunAtexit() {
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int ret = 0;
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for (uptr i = 0; i < atexit_functions.size(); ++i) {
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ret |= atexit(atexit_functions[i]);
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}
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return ret;
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}
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#pragma section(".CRT$XID", long, read) // NOLINT
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__declspec(allocate(".CRT$XID")) int (*__run_atexit)() = RunAtexit;
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#endif
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// ------------------ sanitizer_libc.h
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fd_t OpenFile(const char *filename, FileAccessMode mode, error_t *last_error) {
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fd_t res;
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if (mode == RdOnly) {
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res = CreateFile(filename, GENERIC_READ,
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FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
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nullptr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, nullptr);
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} else if (mode == WrOnly) {
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res = CreateFile(filename, GENERIC_WRITE, 0, nullptr, CREATE_ALWAYS,
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FILE_ATTRIBUTE_NORMAL, nullptr);
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} else {
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UNIMPLEMENTED();
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}
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CHECK(res != kStdoutFd || kStdoutFd == kInvalidFd);
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CHECK(res != kStderrFd || kStderrFd == kInvalidFd);
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if (res == kInvalidFd && last_error)
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*last_error = GetLastError();
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return res;
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}
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void CloseFile(fd_t fd) {
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|
CloseHandle(fd);
|
|
}
|
|
|
|
bool ReadFromFile(fd_t fd, void *buff, uptr buff_size, uptr *bytes_read,
|
|
error_t *error_p) {
|
|
CHECK(fd != kInvalidFd);
|
|
|
|
// bytes_read can't be passed directly to ReadFile:
|
|
// uptr is unsigned long long on 64-bit Windows.
|
|
unsigned long num_read_long;
|
|
|
|
bool success = ::ReadFile(fd, buff, buff_size, &num_read_long, nullptr);
|
|
if (!success && error_p)
|
|
*error_p = GetLastError();
|
|
if (bytes_read)
|
|
*bytes_read = num_read_long;
|
|
return success;
|
|
}
|
|
|
|
bool SupportsColoredOutput(fd_t fd) {
|
|
// FIXME: support colored output.
|
|
return false;
|
|
}
|
|
|
|
bool WriteToFile(fd_t fd, const void *buff, uptr buff_size, uptr *bytes_written,
|
|
error_t *error_p) {
|
|
CHECK(fd != kInvalidFd);
|
|
|
|
// Handle null optional parameters.
|
|
error_t dummy_error;
|
|
error_p = error_p ? error_p : &dummy_error;
|
|
uptr dummy_bytes_written;
|
|
bytes_written = bytes_written ? bytes_written : &dummy_bytes_written;
|
|
|
|
// Initialize output parameters in case we fail.
|
|
*error_p = 0;
|
|
*bytes_written = 0;
|
|
|
|
// Map the conventional Unix fds 1 and 2 to Windows handles. They might be
|
|
// closed, in which case this will fail.
|
|
if (fd == kStdoutFd || fd == kStderrFd) {
|
|
fd = GetStdHandle(fd == kStdoutFd ? STD_OUTPUT_HANDLE : STD_ERROR_HANDLE);
|
|
if (fd == 0) {
|
|
*error_p = ERROR_INVALID_HANDLE;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
DWORD bytes_written_32;
|
|
if (!WriteFile(fd, buff, buff_size, &bytes_written_32, 0)) {
|
|
*error_p = GetLastError();
|
|
return false;
|
|
} else {
|
|
*bytes_written = bytes_written_32;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
bool RenameFile(const char *oldpath, const char *newpath, error_t *error_p) {
|
|
UNIMPLEMENTED();
|
|
}
|
|
|
|
uptr internal_sched_yield() {
|
|
Sleep(0);
|
|
return 0;
|
|
}
|
|
|
|
void internal__exit(int exitcode) {
|
|
ExitProcess(exitcode);
|
|
}
|
|
|
|
uptr internal_ftruncate(fd_t fd, uptr size) {
|
|
UNIMPLEMENTED();
|
|
}
|
|
|
|
uptr GetRSS() {
|
|
return 0;
|
|
}
|
|
|
|
void *internal_start_thread(void (*func)(void *arg), void *arg) { return 0; }
|
|
void internal_join_thread(void *th) { }
|
|
|
|
// ---------------------- BlockingMutex ---------------- {{{1
|
|
const uptr LOCK_UNINITIALIZED = 0;
|
|
const uptr LOCK_READY = (uptr)-1;
|
|
|
|
BlockingMutex::BlockingMutex(LinkerInitialized li) {
|
|
// FIXME: see comments in BlockingMutex::Lock() for the details.
|
|
CHECK(li == LINKER_INITIALIZED || owner_ == LOCK_UNINITIALIZED);
|
|
|
|
CHECK(sizeof(CRITICAL_SECTION) <= sizeof(opaque_storage_));
|
|
InitializeCriticalSection((LPCRITICAL_SECTION)opaque_storage_);
|
|
owner_ = LOCK_READY;
|
|
}
|
|
|
|
BlockingMutex::BlockingMutex() {
|
|
CHECK(sizeof(CRITICAL_SECTION) <= sizeof(opaque_storage_));
|
|
InitializeCriticalSection((LPCRITICAL_SECTION)opaque_storage_);
|
|
owner_ = LOCK_READY;
|
|
}
|
|
|
|
void BlockingMutex::Lock() {
|
|
if (owner_ == LOCK_UNINITIALIZED) {
|
|
// FIXME: hm, global BlockingMutex objects are not initialized?!?
|
|
// This might be a side effect of the clang+cl+link Frankenbuild...
|
|
new(this) BlockingMutex((LinkerInitialized)(LINKER_INITIALIZED + 1));
|
|
|
|
// FIXME: If it turns out the linker doesn't invoke our
|
|
// constructors, we should probably manually Lock/Unlock all the global
|
|
// locks while we're starting in one thread to avoid double-init races.
|
|
}
|
|
EnterCriticalSection((LPCRITICAL_SECTION)opaque_storage_);
|
|
CHECK_EQ(owner_, LOCK_READY);
|
|
owner_ = GetThreadSelf();
|
|
}
|
|
|
|
void BlockingMutex::Unlock() {
|
|
CHECK_EQ(owner_, GetThreadSelf());
|
|
owner_ = LOCK_READY;
|
|
LeaveCriticalSection((LPCRITICAL_SECTION)opaque_storage_);
|
|
}
|
|
|
|
void BlockingMutex::CheckLocked() {
|
|
CHECK_EQ(owner_, GetThreadSelf());
|
|
}
|
|
|
|
uptr GetTlsSize() {
|
|
return 0;
|
|
}
|
|
|
|
void InitTlsSize() {
|
|
}
|
|
|
|
void GetThreadStackAndTls(bool main, uptr *stk_addr, uptr *stk_size,
|
|
uptr *tls_addr, uptr *tls_size) {
|
|
#ifdef SANITIZER_GO
|
|
*stk_addr = 0;
|
|
*stk_size = 0;
|
|
*tls_addr = 0;
|
|
*tls_size = 0;
|
|
#else
|
|
uptr stack_top, stack_bottom;
|
|
GetThreadStackTopAndBottom(main, &stack_top, &stack_bottom);
|
|
*stk_addr = stack_bottom;
|
|
*stk_size = stack_top - stack_bottom;
|
|
*tls_addr = 0;
|
|
*tls_size = 0;
|
|
#endif
|
|
}
|
|
|
|
#if !SANITIZER_GO
|
|
void BufferedStackTrace::SlowUnwindStack(uptr pc, u32 max_depth) {
|
|
CHECK_GE(max_depth, 2);
|
|
// FIXME: CaptureStackBackTrace might be too slow for us.
|
|
// FIXME: Compare with StackWalk64.
|
|
// FIXME: Look at LLVMUnhandledExceptionFilter in Signals.inc
|
|
size = CaptureStackBackTrace(2, Min(max_depth, kStackTraceMax),
|
|
(void**)trace, 0);
|
|
if (size == 0)
|
|
return;
|
|
|
|
// Skip the RTL frames by searching for the PC in the stacktrace.
|
|
uptr pc_location = LocatePcInTrace(pc);
|
|
PopStackFrames(pc_location);
|
|
}
|
|
|
|
void BufferedStackTrace::SlowUnwindStackWithContext(uptr pc, void *context,
|
|
u32 max_depth) {
|
|
CONTEXT ctx = *(CONTEXT *)context;
|
|
STACKFRAME64 stack_frame;
|
|
memset(&stack_frame, 0, sizeof(stack_frame));
|
|
size = 0;
|
|
#if defined(_WIN64)
|
|
int machine_type = IMAGE_FILE_MACHINE_AMD64;
|
|
stack_frame.AddrPC.Offset = ctx.Rip;
|
|
stack_frame.AddrFrame.Offset = ctx.Rbp;
|
|
stack_frame.AddrStack.Offset = ctx.Rsp;
|
|
#else
|
|
int machine_type = IMAGE_FILE_MACHINE_I386;
|
|
stack_frame.AddrPC.Offset = ctx.Eip;
|
|
stack_frame.AddrFrame.Offset = ctx.Ebp;
|
|
stack_frame.AddrStack.Offset = ctx.Esp;
|
|
#endif
|
|
stack_frame.AddrPC.Mode = AddrModeFlat;
|
|
stack_frame.AddrFrame.Mode = AddrModeFlat;
|
|
stack_frame.AddrStack.Mode = AddrModeFlat;
|
|
while (StackWalk64(machine_type, GetCurrentProcess(), GetCurrentThread(),
|
|
&stack_frame, &ctx, NULL, &SymFunctionTableAccess64,
|
|
&SymGetModuleBase64, NULL) &&
|
|
size < Min(max_depth, kStackTraceMax)) {
|
|
trace_buffer[size++] = (uptr)stack_frame.AddrPC.Offset;
|
|
}
|
|
}
|
|
#endif // #if !SANITIZER_GO
|
|
|
|
void ReportFile::Write(const char *buffer, uptr length) {
|
|
SpinMutexLock l(mu);
|
|
ReopenIfNecessary();
|
|
if (!WriteToFile(fd, buffer, length)) {
|
|
// stderr may be closed, but we may be able to print to the debugger
|
|
// instead. This is the case when launching a program from Visual Studio,
|
|
// and the following routine should write to its console.
|
|
OutputDebugStringA(buffer);
|
|
}
|
|
}
|
|
|
|
void SetAlternateSignalStack() {
|
|
// FIXME: Decide what to do on Windows.
|
|
}
|
|
|
|
void UnsetAlternateSignalStack() {
|
|
// FIXME: Decide what to do on Windows.
|
|
}
|
|
|
|
void InstallDeadlySignalHandlers(SignalHandlerType handler) {
|
|
(void)handler;
|
|
// FIXME: Decide what to do on Windows.
|
|
}
|
|
|
|
bool IsDeadlySignal(int signum) {
|
|
// FIXME: Decide what to do on Windows.
|
|
return false;
|
|
}
|
|
|
|
bool IsAccessibleMemoryRange(uptr beg, uptr size) {
|
|
SYSTEM_INFO si;
|
|
GetNativeSystemInfo(&si);
|
|
uptr page_size = si.dwPageSize;
|
|
uptr page_mask = ~(page_size - 1);
|
|
|
|
for (uptr page = beg & page_mask, end = (beg + size - 1) & page_mask;
|
|
page <= end;) {
|
|
MEMORY_BASIC_INFORMATION info;
|
|
if (VirtualQuery((LPCVOID)page, &info, sizeof(info)) != sizeof(info))
|
|
return false;
|
|
|
|
if (info.Protect == 0 || info.Protect == PAGE_NOACCESS ||
|
|
info.Protect == PAGE_EXECUTE)
|
|
return false;
|
|
|
|
if (info.RegionSize == 0)
|
|
return false;
|
|
|
|
page += info.RegionSize;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
uptr ReadBinaryName(/*out*/char *buf, uptr buf_len) {
|
|
// FIXME: Actually implement this function.
|
|
CHECK_GT(buf_len, 0);
|
|
buf[0] = 0;
|
|
return 0;
|
|
}
|
|
|
|
uptr ReadLongProcessName(/*out*/char *buf, uptr buf_len) {
|
|
return ReadBinaryName(buf, buf_len);
|
|
}
|
|
|
|
void CheckVMASize() {
|
|
// Do nothing.
|
|
}
|
|
|
|
} // namespace __sanitizer
|
|
|
|
#endif // _WIN32
|