diff options
| author | Dawid Potocki <dawid@dawidpotocki.com> | 2024-03-05 14:09:27 +1300 |
|---|---|---|
| committer | Dawid Potocki <dawid@dawidpotocki.com> | 2024-03-05 20:34:15 +1300 |
| commit | 063e15900bda8453fb0fc6751e78d064501ccbae (patch) | |
| tree | a4cd5f01dbca33a262333aff10e1e035217a30c8 /externals/breakpad/src/processor/stackwalker_riscv64.h | |
| parent | 537296095ab24eddcb196b5ef98004f91de9c8c2 (diff) | |
Diffstat (limited to 'externals/breakpad/src/processor/stackwalker_riscv64.h')
| -rw-r--r-- | externals/breakpad/src/processor/stackwalker_riscv64.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/externals/breakpad/src/processor/stackwalker_riscv64.h b/externals/breakpad/src/processor/stackwalker_riscv64.h new file mode 100644 index 0000000000..89ab12ff6d --- /dev/null +++ b/externals/breakpad/src/processor/stackwalker_riscv64.h @@ -0,0 +1,100 @@ +// Copyright 2013 Google LLC +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google LLC nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +/* stackwalker_riscv64.h: riscv64-specific stackwalker. + * + * Provides stack frames given riscv64 register context and a memory region + * corresponding to a riscv64 stack. + * + * Author: Iacopo Colonnelli + */ + +#ifndef PROCESSOR_STACKWALKER_RISCV64_H__ +#define PROCESSOR_STACKWALKER_RISCV64_H__ + +#include "google_breakpad/common/minidump_format.h" +#include "google_breakpad/processor/stackwalker.h" + +namespace google_breakpad { + +class CodeModules; + +class StackwalkerRISCV64 : public Stackwalker { +public: + // Context is a riscv context object that gives access to riscv-specific + // register state corresponding to the innermost called frame to be + // included in the stack. The other arguments are passed directly + // through to the base Stackwalker constructor. + StackwalkerRISCV64(const SystemInfo* system_info, + const MDRawContextRISCV64* context, + MemoryRegion* memory, + const CodeModules* modules, + StackFrameSymbolizer* frame_symbolizer); + + // Change the context validity mask of the frame returned by + // GetContextFrame to VALID. This is only for use by unit tests; the + // default behavior is correct for all application code. + void SetContextFrameValidity(int valid) { + context_frame_validity_ = valid; + } + +private: + // Implementation of Stackwalker, using riscv context and stack conventions. + virtual StackFrame* GetContextFrame(); + virtual StackFrame* GetCallerFrame( + const CallStack* stack, bool stack_scan_allowed); + + // Use cfi_frame_info (derived from STACK CFI records) to construct + // the frame that called frames.back(). The caller takes ownership + // of the returned frame. Return NULL on failure. + StackFrameRISCV64* GetCallerByCFIFrameInfo( + const vector<StackFrame*>& frames, CFIFrameInfo* cfi_frame_info); + + // Use the frame pointer. The caller takes ownership of the returned frame. + // Return NULL on failure. + StackFrameRISCV64* GetCallerByFramePointer( + const vector<StackFrame*>& frames); + + // Scan the stack for plausible return addresses. The caller takes ownership + // of the returned frame. Return NULL on failure. + StackFrameRISCV64* GetCallerByStackScan( + const vector<StackFrame*>& frames); + + // Stores the CPU context corresponding to the innermost stack frame to + // be returned by GetContextFrame. + const MDRawContextRISCV64* context_; + + // Validity mask for youngest stack frame. This is always + // CONTEXT_VALID_ALL in real use; it is only changeable for the sake of + // unit tests. + int context_frame_validity_; +}; + +} // namespace google_breakpad + +#endif // PROCESSOR_STACKWALKER_RISCV64_H__ |