| //===-- sanitizer_unwind_win.cpp ------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| /// Sanitizer unwind Windows specific functions. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "sanitizer_platform.h" |
| #if SANITIZER_WINDOWS |
| |
| #define WIN32_LEAN_AND_MEAN |
| #define NOGDI |
| #include <windows.h> |
| |
| #include "sanitizer_dbghelp.h" // for StackWalk64 |
| #include "sanitizer_stacktrace.h" |
| #include "sanitizer_symbolizer.h" // for InitializeDbgHelpIfNeeded |
| |
| using namespace __sanitizer; |
| |
| #if !SANITIZER_GO |
| void BufferedStackTrace::UnwindSlow(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(1, Min(max_depth, kStackTraceMax), |
| (void **)&trace_buffer[0], 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); |
| |
| // Replace the first frame with the PC because the frame in the |
| // stacktrace might be incorrect. |
| trace_buffer[0] = pc; |
| } |
| |
| #ifdef __clang__ |
| #pragma clang diagnostic push |
| #pragma clang diagnostic ignored "-Wframe-larger-than=" |
| #endif |
| void BufferedStackTrace::UnwindSlow(uptr pc, void *context, u32 max_depth) { |
| CHECK(context); |
| CHECK_GE(max_depth, 2); |
| CONTEXT ctx = *(CONTEXT *)context; |
| STACKFRAME64 stack_frame; |
| memset(&stack_frame, 0, sizeof(stack_frame)); |
| |
| InitializeDbgHelpIfNeeded(); |
| |
| size = 0; |
| # if SANITIZER_WINDOWS64 |
| # if SANITIZER_ARM64 |
| int machine_type = IMAGE_FILE_MACHINE_ARM64; |
| stack_frame.AddrPC.Offset = ctx.Pc; |
| stack_frame.AddrFrame.Offset = ctx.Fp; |
| stack_frame.AddrStack.Offset = ctx.Sp; |
| # else |
| 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; |
| # endif |
| # else |
| # if SANITIZER_ARM |
| int machine_type = IMAGE_FILE_MACHINE_ARM; |
| stack_frame.AddrPC.Offset = ctx.Pc; |
| stack_frame.AddrFrame.Offset = ctx.R11; |
| stack_frame.AddrStack.Offset = ctx.Sp; |
| # 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 |
| # 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; |
| } |
| } |
| # ifdef __clang__ |
| # pragma clang diagnostic pop |
| # endif |
| # endif // #if !SANITIZER_GO |
| |
| #endif // SANITIZER_WINDOWS |