218 lines
7.8 KiB
C++
218 lines
7.8 KiB
C++
//===-- DNBArchImpl.h -------------------------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Created by Greg Clayton on 6/25/07.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef __DebugNubArchMachARM_h__
|
|
#define __DebugNubArchMachARM_h__
|
|
|
|
#if defined (__arm__)
|
|
|
|
#include "DNBArch.h"
|
|
#include <ARMDisassembler/ARMDisassembler.h>
|
|
|
|
class MachThread;
|
|
|
|
class DNBArchMachARM : public DNBArchProtocol
|
|
{
|
|
public:
|
|
enum { kMaxNumThumbITBreakpoints = 4 };
|
|
|
|
DNBArchMachARM(MachThread *thread) :
|
|
m_thread(thread),
|
|
m_state(),
|
|
m_hw_single_chained_step_addr(INVALID_NUB_ADDRESS),
|
|
m_sw_single_step_next_pc(INVALID_NUB_ADDRESS),
|
|
m_sw_single_step_break_id(INVALID_NUB_BREAK_ID),
|
|
m_sw_single_step_itblock_break_count(0),
|
|
m_last_decode_pc(INVALID_NUB_ADDRESS)
|
|
{
|
|
memset(&m_dbg_save, 0, sizeof(m_dbg_save));
|
|
ThumbStaticsInit(&m_last_decode_thumb);
|
|
for (int i = 0; i < kMaxNumThumbITBreakpoints; i++)
|
|
m_sw_single_step_itblock_break_id[i] = INVALID_NUB_BREAK_ID;
|
|
}
|
|
|
|
virtual ~DNBArchMachARM()
|
|
{
|
|
}
|
|
|
|
virtual const DNBRegisterSetInfo *
|
|
GetRegisterSetInfo(nub_size_t *num_reg_sets) const;
|
|
virtual bool GetRegisterValue(int set, int reg, DNBRegisterValue *value);
|
|
virtual bool SetRegisterValue(int set, int reg, const DNBRegisterValue *value);
|
|
|
|
virtual kern_return_t GetRegisterState (int set, bool force);
|
|
virtual kern_return_t SetRegisterState (int set);
|
|
virtual bool RegisterSetStateIsValid (int set) const;
|
|
|
|
virtual uint64_t GetPC(uint64_t failValue); // Get program counter
|
|
virtual kern_return_t SetPC(uint64_t value);
|
|
virtual uint64_t GetSP(uint64_t failValue); // Get stack pointer
|
|
virtual void ThreadWillResume();
|
|
virtual bool ThreadDidStop();
|
|
|
|
static const uint8_t * const SoftwareBreakpointOpcode (nub_size_t byte_size);
|
|
static uint32_t GetCPUType();
|
|
|
|
virtual uint32_t NumSupportedHardwareBreakpoints();
|
|
virtual uint32_t NumSupportedHardwareWatchpoints();
|
|
virtual uint32_t EnableHardwareBreakpoint (nub_addr_t addr, nub_size_t size);
|
|
virtual uint32_t EnableHardwareWatchpoint (nub_addr_t addr, nub_size_t size, bool read, bool write);
|
|
virtual bool DisableHardwareBreakpoint (uint32_t hw_break_index);
|
|
virtual bool DisableHardwareWatchpoint (uint32_t hw_break_index);
|
|
virtual bool StepNotComplete ();
|
|
|
|
protected:
|
|
|
|
|
|
kern_return_t EnableHardwareSingleStep (bool enable);
|
|
kern_return_t SetSingleStepSoftwareBreakpoints ();
|
|
|
|
bool ConditionPassed(uint8_t condition, uint32_t cpsr);
|
|
bool ComputeNextPC(nub_addr_t currentPC, arm_decoded_instruction_t decodedInstruction, bool currentPCIsThumb, nub_addr_t *targetPC);
|
|
void EvaluateNextInstructionForSoftwareBreakpointSetup(nub_addr_t currentPC, uint32_t cpsr, bool currentPCIsThumb, nub_addr_t *nextPC, bool *nextPCIsThumb);
|
|
void DecodeITBlockInstructions(nub_addr_t curr_pc);
|
|
arm_error_t DecodeInstructionUsingDisassembler(nub_addr_t curr_pc, uint32_t curr_cpsr, arm_decoded_instruction_t *decodedInstruction, thumb_static_data_t *thumbStaticData, nub_addr_t *next_pc);
|
|
static nub_bool_t BreakpointHit (nub_process_t pid, nub_thread_t tid, nub_break_t breakID, void *baton);
|
|
|
|
typedef enum RegisterSetTag
|
|
{
|
|
e_regSetALL = REGISTER_SET_ALL,
|
|
e_regSetGPR = ARM_THREAD_STATE,
|
|
e_regSetVFP = ARM_VFP_STATE,
|
|
e_regSetEXC = ARM_EXCEPTION_STATE,
|
|
e_regSetDBG = ARM_DEBUG_STATE,
|
|
kNumRegisterSets
|
|
} RegisterSet;
|
|
|
|
enum
|
|
{
|
|
Read = 0,
|
|
Write = 1,
|
|
kNumErrors = 2
|
|
};
|
|
|
|
struct State
|
|
{
|
|
arm_thread_state_t gpr;
|
|
arm_vfp_state_t vfp;
|
|
arm_exception_state_t exc;
|
|
arm_debug_state_t dbg;
|
|
kern_return_t gpr_errs[2]; // Read/Write errors
|
|
kern_return_t vfp_errs[2]; // Read/Write errors
|
|
kern_return_t exc_errs[2]; // Read/Write errors
|
|
kern_return_t dbg_errs[2]; // Read/Write errors
|
|
State()
|
|
{
|
|
uint32_t i;
|
|
for (i=0; i<kNumErrors; i++)
|
|
{
|
|
gpr_errs[i] = -1;
|
|
vfp_errs[i] = -1;
|
|
exc_errs[i] = -1;
|
|
dbg_errs[i] = -1;
|
|
}
|
|
}
|
|
void InvalidateRegisterSetState(int set)
|
|
{
|
|
SetError (set, Read, -1);
|
|
}
|
|
kern_return_t GetError (int set, uint32_t err_idx) const
|
|
{
|
|
if (err_idx < kNumErrors)
|
|
{
|
|
switch (set)
|
|
{
|
|
// When getting all errors, just OR all values together to see if
|
|
// we got any kind of error.
|
|
case e_regSetALL: return gpr_errs[err_idx] |
|
|
vfp_errs[err_idx] |
|
|
exc_errs[err_idx] |
|
|
dbg_errs[err_idx] ;
|
|
case e_regSetGPR: return gpr_errs[err_idx];
|
|
case e_regSetVFP: return vfp_errs[err_idx];
|
|
case e_regSetEXC: return exc_errs[err_idx];
|
|
case e_regSetDBG: return dbg_errs[err_idx];
|
|
default: break;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
bool SetError (int set, uint32_t err_idx, kern_return_t err)
|
|
{
|
|
if (err_idx < kNumErrors)
|
|
{
|
|
switch (set)
|
|
{
|
|
case e_regSetALL:
|
|
gpr_errs[err_idx] = err;
|
|
vfp_errs[err_idx] = err;
|
|
dbg_errs[err_idx] = err;
|
|
exc_errs[err_idx] = err;
|
|
return true;
|
|
|
|
case e_regSetGPR:
|
|
gpr_errs[err_idx] = err;
|
|
return true;
|
|
|
|
case e_regSetVFP:
|
|
vfp_errs[err_idx] = err;
|
|
return true;
|
|
|
|
case e_regSetEXC:
|
|
exc_errs[err_idx] = err;
|
|
return true;
|
|
|
|
case e_regSetDBG:
|
|
dbg_errs[err_idx] = err;
|
|
return true;
|
|
default: break;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
bool RegsAreValid (int set) const
|
|
{
|
|
return GetError(set, Read) == KERN_SUCCESS;
|
|
}
|
|
};
|
|
|
|
kern_return_t GetGPRState (bool force);
|
|
kern_return_t GetVFPState (bool force);
|
|
kern_return_t GetEXCState (bool force);
|
|
kern_return_t GetDBGState (bool force);
|
|
|
|
kern_return_t SetGPRState ();
|
|
kern_return_t SetVFPState ();
|
|
kern_return_t SetEXCState ();
|
|
kern_return_t SetDBGState ();
|
|
protected:
|
|
MachThread * m_thread;
|
|
State m_state;
|
|
arm_debug_state_t m_dbg_save;
|
|
nub_addr_t m_hw_single_chained_step_addr;
|
|
// Software single stepping support
|
|
nub_addr_t m_sw_single_step_next_pc;
|
|
nub_break_t m_sw_single_step_break_id;
|
|
nub_break_t m_sw_single_step_itblock_break_id[kMaxNumThumbITBreakpoints];
|
|
nub_addr_t m_sw_single_step_itblock_break_count;
|
|
// Disassembler state
|
|
thumb_static_data_t m_last_decode_thumb;
|
|
arm_decoded_instruction_t m_last_decode_arm;
|
|
nub_addr_t m_last_decode_pc;
|
|
|
|
};
|
|
|
|
typedef DNBArchMachARM DNBArch;
|
|
#endif // #if defined (__arm__)
|
|
#endif // #ifndef __DebugNubArchMachARM_h__
|