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//===-- RegisterContextDarwin_i386.h ----------------------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
#ifndef LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_REGISTERCONTEXTDARWIN_I386_H
#define LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_REGISTERCONTEXTDARWIN_I386_H
#include "lldb/Target/RegisterContext.h"
#include "lldb/lldb-private.h"
class RegisterContextDarwin_i386 : public lldb_private::RegisterContext {
public:
RegisterContextDarwin_i386(lldb_private::Thread &thread,
uint32_t concrete_frame_idx);
~RegisterContextDarwin_i386() override;
void InvalidateAllRegisters() override;
size_t GetRegisterCount() override;
const lldb_private::RegisterInfo *GetRegisterInfoAtIndex(size_t reg) override;
size_t GetRegisterSetCount() override;
const lldb_private::RegisterSet *GetRegisterSet(size_t set) override;
bool ReadRegister(const lldb_private::RegisterInfo *reg_info,
lldb_private::RegisterValue &value) override;
bool WriteRegister(const lldb_private::RegisterInfo *reg_info,
const lldb_private::RegisterValue &value) override;
bool ReadAllRegisterValues(lldb::WritableDataBufferSP &data_sp) override;
bool WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) override;
uint32_t ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind,
uint32_t num) override;
bool HardwareSingleStep(bool enable) override;
struct GPR {
uint32_t eax;
uint32_t ebx;
uint32_t ecx;
uint32_t edx;
uint32_t edi;
uint32_t esi;
uint32_t ebp;
uint32_t esp;
uint32_t ss;
uint32_t eflags;
uint32_t eip;
uint32_t cs;
uint32_t ds;
uint32_t es;
uint32_t fs;
uint32_t gs;
};
struct MMSReg {
uint8_t bytes[10];
uint8_t pad[6];
};
struct XMMReg {
uint8_t bytes[16];
};
struct FPU {
uint32_t pad[2];
uint16_t fcw;
uint16_t fsw;
uint8_t ftw;
uint8_t pad1;
uint16_t fop;
uint32_t ip;
uint16_t cs;
uint16_t pad2;
uint32_t dp;
uint16_t ds;
uint16_t pad3;
uint32_t mxcsr;
uint32_t mxcsrmask;
MMSReg stmm[8];
XMMReg xmm[8];
uint8_t pad4[14 * 16];
int pad5;
};
struct EXC {
uint32_t trapno;
uint32_t err;
uint32_t faultvaddr;
};
protected:
enum { GPRRegSet = 1, FPURegSet = 2, EXCRegSet = 3 };
enum {
GPRWordCount = sizeof(GPR) / sizeof(uint32_t),
FPUWordCount = sizeof(FPU) / sizeof(uint32_t),
EXCWordCount = sizeof(EXC) / sizeof(uint32_t)
};
enum { Read = 0, Write = 1, kNumErrors = 2 };
GPR gpr;
FPU fpu;
EXC exc;
int gpr_errs[2]; // Read/Write errors
int fpu_errs[2]; // Read/Write errors
int exc_errs[2]; // Read/Write errors
void InvalidateAllRegisterStates() {
SetError(GPRRegSet, Read, -1);
SetError(FPURegSet, Read, -1);
SetError(EXCRegSet, Read, -1);
}
int GetError(int flavor, uint32_t err_idx) const {
if (err_idx < kNumErrors) {
switch (flavor) {
// When getting all errors, just OR all values together to see if
// we got any kind of error.
case GPRRegSet:
return gpr_errs[err_idx];
case FPURegSet:
return fpu_errs[err_idx];
case EXCRegSet:
return exc_errs[err_idx];
default:
break;
}
}
return -1;
}
bool SetError(int flavor, uint32_t err_idx, int err) {
if (err_idx < kNumErrors) {
switch (flavor) {
case GPRRegSet:
gpr_errs[err_idx] = err;
return true;
case FPURegSet:
fpu_errs[err_idx] = err;
return true;
case EXCRegSet:
exc_errs[err_idx] = err;
return true;
default:
break;
}
}
return false;
}
bool RegisterSetIsCached(int set) const { return GetError(set, Read) == 0; }
void LogGPR(lldb_private::Log *log, const char *title);
int ReadGPR(bool force);
int ReadFPU(bool force);
int ReadEXC(bool force);
int WriteGPR();
int WriteFPU();
int WriteEXC();
// Subclasses override these to do the actual reading.
virtual int DoReadGPR(lldb::tid_t tid, int flavor, GPR &gpr) = 0;
virtual int DoReadFPU(lldb::tid_t tid, int flavor, FPU &fpu) = 0;
virtual int DoReadEXC(lldb::tid_t tid, int flavor, EXC &exc) = 0;
virtual int DoWriteGPR(lldb::tid_t tid, int flavor, const GPR &gpr) = 0;
virtual int DoWriteFPU(lldb::tid_t tid, int flavor, const FPU &fpu) = 0;
virtual int DoWriteEXC(lldb::tid_t tid, int flavor, const EXC &exc) = 0;
int ReadRegisterSet(uint32_t set, bool force);
int WriteRegisterSet(uint32_t set);
static uint32_t GetRegisterNumber(uint32_t reg_kind, uint32_t reg_num);
static int GetSetForNativeRegNum(int reg_num);
static size_t GetRegisterInfosCount();
static const lldb_private::RegisterInfo *GetRegisterInfos();
};
#endif // LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_REGISTERCONTEXTDARWIN_I386_H
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