aboutsummaryrefslogtreecommitdiff
path: root/lib/sanitizer_common/sanitizer_symbolizer_win.cc
diff options
context:
space:
mode:
authorDimitry Andric <dim@FreeBSD.org>2015-09-06 18:41:23 +0000
committerDimitry Andric <dim@FreeBSD.org>2015-09-06 18:41:23 +0000
commitf31bcc68c72371a2bf63aead9f3373a1ff2053b6 (patch)
treeb259e5d585da0f8cde9579939a74d5ef44c72abd /lib/sanitizer_common/sanitizer_symbolizer_win.cc
parentcd2dd3df15523e2be8d2bbace27641d6ac9fa40d (diff)
downloadsrc-f31bcc68c72371a2bf63aead9f3373a1ff2053b6.tar.gz
src-f31bcc68c72371a2bf63aead9f3373a1ff2053b6.zip
Import compiler-rt 3.7.0 release (r246257).vendor/compiler-rt/compiler-rt-release_370-r246257
Notes
Notes: svn path=/vendor/compiler-rt/dist/; revision=287516 svn path=/vendor/compiler-rt/compiler-rt-release_370-r246257/; revision=287517; tag=vendor/compiler-rt/compiler-rt-release_370-r246257
Diffstat (limited to 'lib/sanitizer_common/sanitizer_symbolizer_win.cc')
-rw-r--r--lib/sanitizer_common/sanitizer_symbolizer_win.cc233
1 files changed, 112 insertions, 121 deletions
diff --git a/lib/sanitizer_common/sanitizer_symbolizer_win.cc b/lib/sanitizer_common/sanitizer_symbolizer_win.cc
index ed96a3a895a8..31f374687e96 100644
--- a/lib/sanitizer_common/sanitizer_symbolizer_win.cc
+++ b/lib/sanitizer_common/sanitizer_symbolizer_win.cc
@@ -18,139 +18,130 @@
#include <dbghelp.h>
#pragma comment(lib, "dbghelp.lib")
-#include "sanitizer_symbolizer.h"
+#include "sanitizer_symbolizer_win.h"
+#include "sanitizer_symbolizer_internal.h"
namespace __sanitizer {
-class WinSymbolizer : public Symbolizer {
- public:
- WinSymbolizer() : initialized_(false) {}
-
- SymbolizedStack *SymbolizePC(uptr addr) override {
- SymbolizedStack *frame = SymbolizedStack::New(addr);
-
- BlockingMutexLock l(&dbghelp_mu_);
- InitializeIfNeeded();
-
- // See http://msdn.microsoft.com/en-us/library/ms680578(VS.85).aspx
- char buffer[sizeof(SYMBOL_INFO) + MAX_SYM_NAME * sizeof(CHAR)];
- PSYMBOL_INFO symbol = (PSYMBOL_INFO)buffer;
- symbol->SizeOfStruct = sizeof(SYMBOL_INFO);
- symbol->MaxNameLen = MAX_SYM_NAME;
- DWORD64 offset = 0;
- BOOL got_objname = SymFromAddr(GetCurrentProcess(),
- (DWORD64)addr, &offset, symbol);
- if (!got_objname)
- return frame;
-
- DWORD unused;
- IMAGEHLP_LINE64 line_info;
- line_info.SizeOfStruct = sizeof(IMAGEHLP_LINE64);
- BOOL got_fileline = SymGetLineFromAddr64(GetCurrentProcess(), (DWORD64)addr,
- &unused, &line_info);
- frame->info.function = internal_strdup(symbol->Name);
- frame->info.function_offset = (uptr)offset;
- if (got_fileline) {
- frame->info.file = internal_strdup(line_info.FileName);
- frame->info.line = line_info.LineNumber;
- }
-
- IMAGEHLP_MODULE64 mod_info;
- internal_memset(&mod_info, 0, sizeof(mod_info));
- mod_info.SizeOfStruct = sizeof(mod_info);
- if (SymGetModuleInfo64(GetCurrentProcess(), addr, &mod_info))
- frame->info.FillAddressAndModuleInfo(addr, mod_info.ImageName,
- addr - (uptr)mod_info.BaseOfImage);
- return frame;
- }
+namespace {
- bool CanReturnFileLineInfo() override {
- return true;
- }
+bool is_dbghelp_initialized = false;
- const char *Demangle(const char *name) override {
- CHECK(initialized_);
- static char demangle_buffer[1000];
- if (name[0] == '\01' &&
- UnDecorateSymbolName(name + 1, demangle_buffer, sizeof(demangle_buffer),
- UNDNAME_NAME_ONLY))
- return demangle_buffer;
- else
- return name;
- }
+bool TrySymInitialize() {
+ SymSetOptions(SYMOPT_DEFERRED_LOADS | SYMOPT_UNDNAME | SYMOPT_LOAD_LINES);
+ return SymInitialize(GetCurrentProcess(), 0, TRUE);
+ // FIXME: We don't call SymCleanup() on exit yet - should we?
+}
- // FIXME: Implement GetModuleNameAndOffsetForPC().
-
- private:
- void InitializeIfNeeded() {
- if (initialized_)
- return;
- if (!TrySymInitialize()) {
- // OK, maybe the client app has called SymInitialize already.
- // That's a bit unfortunate for us as all the DbgHelp functions are
- // single-threaded and we can't coordinate with the app.
- // FIXME: Can we stop the other threads at this point?
- // Anyways, we have to reconfigure stuff to make sure that SymInitialize
- // has all the appropriate options set.
- // Cross our fingers and reinitialize DbgHelp.
- Report("*** WARNING: Failed to initialize DbgHelp! ***\n");
- Report("*** Most likely this means that the app is already ***\n");
- Report("*** using DbgHelp, possibly with incompatible flags. ***\n");
- Report("*** Due to technical reasons, symbolization might crash ***\n");
- Report("*** or produce wrong results. ***\n");
- SymCleanup(GetCurrentProcess());
- TrySymInitialize();
- }
- initialized_ = true;
-
- // When an executable is run from a location different from the one where it
- // was originally built, we may not see the nearby PDB files.
- // To work around this, let's append the directory of the main module
- // to the symbol search path. All the failures below are not fatal.
- const size_t kSymPathSize = 2048;
- static wchar_t path_buffer[kSymPathSize + 1 + MAX_PATH];
- if (!SymGetSearchPathW(GetCurrentProcess(), path_buffer, kSymPathSize)) {
- Report("*** WARNING: Failed to SymGetSearchPathW ***\n");
- return;
- }
- size_t sz = wcslen(path_buffer);
- if (sz) {
- CHECK_EQ(0, wcscat_s(path_buffer, L";"));
- sz++;
- }
- DWORD res = GetModuleFileNameW(NULL, path_buffer + sz, MAX_PATH);
- if (res == 0 || res == MAX_PATH) {
- Report("*** WARNING: Failed to getting the EXE directory ***\n");
- return;
- }
- // Write the zero character in place of the last backslash to get the
- // directory of the main module at the end of path_buffer.
- wchar_t *last_bslash = wcsrchr(path_buffer + sz, L'\\');
- CHECK_NE(last_bslash, 0);
- *last_bslash = L'\0';
- if (!SymSetSearchPathW(GetCurrentProcess(), path_buffer)) {
- Report("*** WARNING: Failed to SymSetSearchPathW\n");
- return;
- }
+// Initializes DbgHelp library, if it's not yet initialized. Calls to this
+// function should be synchronized with respect to other calls to DbgHelp API
+// (e.g. from WinSymbolizerTool).
+void InitializeDbgHelpIfNeeded() {
+ if (is_dbghelp_initialized)
+ return;
+ if (!TrySymInitialize()) {
+ // OK, maybe the client app has called SymInitialize already.
+ // That's a bit unfortunate for us as all the DbgHelp functions are
+ // single-threaded and we can't coordinate with the app.
+ // FIXME: Can we stop the other threads at this point?
+ // Anyways, we have to reconfigure stuff to make sure that SymInitialize
+ // has all the appropriate options set.
+ // Cross our fingers and reinitialize DbgHelp.
+ Report("*** WARNING: Failed to initialize DbgHelp! ***\n");
+ Report("*** Most likely this means that the app is already ***\n");
+ Report("*** using DbgHelp, possibly with incompatible flags. ***\n");
+ Report("*** Due to technical reasons, symbolization might crash ***\n");
+ Report("*** or produce wrong results. ***\n");
+ SymCleanup(GetCurrentProcess());
+ TrySymInitialize();
+ }
+ is_dbghelp_initialized = true;
+
+ // When an executable is run from a location different from the one where it
+ // was originally built, we may not see the nearby PDB files.
+ // To work around this, let's append the directory of the main module
+ // to the symbol search path. All the failures below are not fatal.
+ const size_t kSymPathSize = 2048;
+ static wchar_t path_buffer[kSymPathSize + 1 + MAX_PATH];
+ if (!SymGetSearchPathW(GetCurrentProcess(), path_buffer, kSymPathSize)) {
+ Report("*** WARNING: Failed to SymGetSearchPathW ***\n");
+ return;
+ }
+ size_t sz = wcslen(path_buffer);
+ if (sz) {
+ CHECK_EQ(0, wcscat_s(path_buffer, L";"));
+ sz++;
+ }
+ DWORD res = GetModuleFileNameW(NULL, path_buffer + sz, MAX_PATH);
+ if (res == 0 || res == MAX_PATH) {
+ Report("*** WARNING: Failed to getting the EXE directory ***\n");
+ return;
+ }
+ // Write the zero character in place of the last backslash to get the
+ // directory of the main module at the end of path_buffer.
+ wchar_t *last_bslash = wcsrchr(path_buffer + sz, L'\\');
+ CHECK_NE(last_bslash, 0);
+ *last_bslash = L'\0';
+ if (!SymSetSearchPathW(GetCurrentProcess(), path_buffer)) {
+ Report("*** WARNING: Failed to SymSetSearchPathW\n");
+ return;
}
+}
- bool TrySymInitialize() {
- SymSetOptions(SYMOPT_DEFERRED_LOADS | SYMOPT_UNDNAME | SYMOPT_LOAD_LINES);
- return SymInitialize(GetCurrentProcess(), 0, TRUE);
- // FIXME: We don't call SymCleanup() on exit yet - should we?
+} // namespace
+
+bool WinSymbolizerTool::SymbolizePC(uptr addr, SymbolizedStack *frame) {
+ InitializeDbgHelpIfNeeded();
+
+ // See http://msdn.microsoft.com/en-us/library/ms680578(VS.85).aspx
+ char buffer[sizeof(SYMBOL_INFO) + MAX_SYM_NAME * sizeof(CHAR)];
+ PSYMBOL_INFO symbol = (PSYMBOL_INFO)buffer;
+ symbol->SizeOfStruct = sizeof(SYMBOL_INFO);
+ symbol->MaxNameLen = MAX_SYM_NAME;
+ DWORD64 offset = 0;
+ BOOL got_objname = SymFromAddr(GetCurrentProcess(),
+ (DWORD64)addr, &offset, symbol);
+ if (!got_objname)
+ return false;
+
+ DWORD unused;
+ IMAGEHLP_LINE64 line_info;
+ line_info.SizeOfStruct = sizeof(IMAGEHLP_LINE64);
+ BOOL got_fileline = SymGetLineFromAddr64(GetCurrentProcess(), (DWORD64)addr,
+ &unused, &line_info);
+ frame->info.function = internal_strdup(symbol->Name);
+ frame->info.function_offset = (uptr)offset;
+ if (got_fileline) {
+ frame->info.file = internal_strdup(line_info.FileName);
+ frame->info.line = line_info.LineNumber;
}
+ return true;
+}
+
+const char *WinSymbolizerTool::Demangle(const char *name) {
+ CHECK(is_dbghelp_initialized);
+ static char demangle_buffer[1000];
+ if (name[0] == '\01' &&
+ UnDecorateSymbolName(name + 1, demangle_buffer, sizeof(demangle_buffer),
+ UNDNAME_NAME_ONLY))
+ return demangle_buffer;
+ else
+ return name;
+}
- // All DbgHelp functions are single threaded, so we should use a mutex to
- // serialize accesses.
- BlockingMutex dbghelp_mu_;
- bool initialized_;
-};
+const char *Symbolizer::PlatformDemangle(const char *name) {
+ return name;
+}
+
+void Symbolizer::PlatformPrepareForSandboxing() {
+ // Do nothing.
+}
Symbolizer *Symbolizer::PlatformInit() {
- static bool called_once = false;
- CHECK(!called_once && "Shouldn't create more than one symbolizer");
- called_once = true;
- return new(symbolizer_allocator_) WinSymbolizer();
+ IntrusiveList<SymbolizerTool> list;
+ list.clear();
+ list.push_back(new(symbolizer_allocator_) WinSymbolizerTool());
+ return new(symbolizer_allocator_) Symbolizer(list);
}
} // namespace __sanitizer