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Signed-off-by: swurl <swurl@swurl.xyz>
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swurl 2025-05-31 02:33:02 -04:00
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// Copyright 2014 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.
// dump_context.h: A (mini/micro) dump CPU-specific context.
#ifndef GOOGLE_BREAKPAD_PROCESSOR_DUMP_CONTEXT_H__
#define GOOGLE_BREAKPAD_PROCESSOR_DUMP_CONTEXT_H__
#include "google_breakpad/common/minidump_format.h"
#include "google_breakpad/processor/dump_object.h"
namespace google_breakpad {
// DumpContext carries a CPU-specific MDRawContext structure, which contains CPU
// context such as register states.
class DumpContext : public DumpObject {
public:
virtual ~DumpContext();
// Returns an MD_CONTEXT_* value such as MD_CONTEXT_X86 or MD_CONTEXT_PPC
// identifying the CPU type that the context was collected from. The
// returned value will identify the CPU only, and will have any other
// MD_CONTEXT_* bits masked out. Returns 0 on failure.
uint32_t GetContextCPU() const;
// Return the raw value of |context_flags_|
uint32_t GetContextFlags() const;
// Returns raw CPU-specific context data for the named CPU type. If the
// context data does not match the CPU type or does not exist, returns NULL.
const MDRawContextAMD64* GetContextAMD64() const;
const MDRawContextARM* GetContextARM() const;
const MDRawContextARM64* GetContextARM64() const;
const MDRawContextMIPS* GetContextMIPS() const;
const MDRawContextPPC* GetContextPPC() const;
const MDRawContextPPC64* GetContextPPC64() const;
const MDRawContextSPARC* GetContextSPARC() const;
const MDRawContextX86* GetContextX86() const;
const MDRawContextRISCV* GetContextRISCV() const;
const MDRawContextRISCV64* GetContextRISCV64() const;
// A convenience method to get the instruction pointer out of the
// MDRawContext, since it varies per-CPU architecture.
bool GetInstructionPointer(uint64_t* ip) const;
// Similar to the GetInstructionPointer method, this method gets the stack
// pointer for all CPU architectures.
bool GetStackPointer(uint64_t* sp) const;
// Print a human-readable representation of the object to stdout.
void Print();
protected:
DumpContext();
// Sets row CPU-specific context data for the names CPU type.
void SetContextFlags(uint32_t context_flags);
void SetContextX86(MDRawContextX86* x86);
void SetContextPPC(MDRawContextPPC* ppc);
void SetContextPPC64(MDRawContextPPC64* ppc64);
void SetContextAMD64(MDRawContextAMD64* amd64);
void SetContextSPARC(MDRawContextSPARC* ctx_sparc);
void SetContextARM(MDRawContextARM* arm);
void SetContextARM64(MDRawContextARM64* arm64);
void SetContextMIPS(MDRawContextMIPS* ctx_mips);
void SetContextRISCV(MDRawContextRISCV* riscv);
void SetContextRISCV64(MDRawContextRISCV64* riscv64);
// Free the CPU-specific context structure.
void FreeContext();
private:
// The CPU-specific context structure.
union {
MDRawContextBase* base;
MDRawContextX86* x86;
MDRawContextPPC* ppc;
MDRawContextPPC64* ppc64;
MDRawContextAMD64* amd64;
// on Solaris SPARC, sparc is defined as a numeric constant,
// so variables can NOT be named as sparc
MDRawContextSPARC* ctx_sparc;
MDRawContextARM* arm;
MDRawContextARM64* arm64;
MDRawContextMIPS* ctx_mips;
MDRawContextRISCV* riscv;
MDRawContextRISCV64* riscv64;
} context_;
// Store this separately because of the weirdo AMD64 context
uint32_t context_flags_;
};
} // namespace google_breakpad
#endif // GOOGLE_BREAKPAD_PROCESSOR_DUMP_CONTEXT_H__