| //===-- DNBArchImplI386.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 __DNBArchImplI386_h__ |
| #define __DNBArchImplI386_h__ |
| |
| #if defined (__i386__) || defined (__x86_64__) |
| |
| #include "DNBArch.h" |
| #include "../HasAVX.h" |
| #include "MachRegisterStatesI386.h" |
| |
| class MachThread; |
| |
| class DNBArchImplI386 : public DNBArchProtocol |
| { |
| public: |
| DNBArchImplI386(MachThread *thread) : |
| m_thread(thread), |
| m_state() |
| { |
| } |
| virtual ~DNBArchImplI386() |
| { |
| } |
| |
| static void Initialize(); |
| |
| virtual bool GetRegisterValue(int set, int reg, DNBRegisterValue *value); |
| virtual bool SetRegisterValue(int set, int reg, const DNBRegisterValue *value); |
| virtual nub_size_t GetRegisterContext (void *buf, nub_size_t buf_len); |
| virtual nub_size_t SetRegisterContext (const void *buf, nub_size_t buf_len); |
| 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(); |
| virtual bool NotifyException(MachException::Data& exc); |
| |
| virtual uint32_t NumSupportedHardwareWatchpoints(); |
| virtual uint32_t EnableHardwareWatchpoint (nub_addr_t addr, nub_size_t size, bool read, bool write); |
| virtual bool DisableHardwareWatchpoint (uint32_t hw_break_index); |
| virtual void HardwareWatchpointStateChanged (); |
| virtual uint32_t GetHardwareWatchpointHit(nub_addr_t &addr); |
| |
| protected: |
| kern_return_t EnableHardwareSingleStep (bool enable); |
| |
| typedef __i386_thread_state_t GPR; |
| typedef __i386_float_state_t FPU; |
| typedef __i386_exception_state_t EXC; |
| typedef __i386_avx_state_t AVX; |
| typedef __i386_debug_state_t DBG; |
| |
| static const DNBRegisterInfo g_gpr_registers[]; |
| static const DNBRegisterInfo g_fpu_registers_no_avx[]; |
| static const DNBRegisterInfo g_fpu_registers_avx[]; |
| static const DNBRegisterInfo g_exc_registers[]; |
| static const DNBRegisterSetInfo g_reg_sets_no_avx[]; |
| static const DNBRegisterSetInfo g_reg_sets_avx[]; |
| static const size_t k_num_gpr_registers; |
| static const size_t k_num_fpu_registers_no_avx; |
| static const size_t k_num_fpu_registers_avx; |
| static const size_t k_num_exc_registers; |
| static const size_t k_num_all_registers_no_avx; |
| static const size_t k_num_all_registers_avx; |
| static const size_t k_num_register_sets; |
| |
| typedef enum RegisterSetTag |
| { |
| e_regSetALL = REGISTER_SET_ALL, |
| e_regSetGPR, |
| e_regSetFPU, |
| e_regSetEXC, |
| e_regSetDBG, |
| kNumRegisterSets |
| } RegisterSet; |
| |
| typedef enum RegisterSetWordSizeTag |
| { |
| e_regSetWordSizeGPR = sizeof(GPR) / sizeof(int), |
| e_regSetWordSizeFPU = sizeof(FPU) / sizeof(int), |
| e_regSetWordSizeEXC = sizeof(EXC) / sizeof(int), |
| e_regSetWordSizeAVX = sizeof(AVX) / sizeof(int), |
| e_regSetWordSizeDBG = sizeof(DBG) / sizeof(int) |
| } RegisterSetWordSize; |
| |
| enum |
| { |
| Read = 0, |
| Write = 1, |
| kNumErrors = 2 |
| }; |
| |
| struct Context |
| { |
| GPR gpr; |
| union { |
| FPU no_avx; |
| AVX avx; |
| } fpu; |
| EXC exc; |
| DBG dbg; |
| }; |
| |
| // See also HardwareWatchpointStateChanged() which updates this class-wide variable. |
| static DBG Global_Debug_State; |
| static bool Valid_Global_Debug_State; |
| |
| struct State |
| { |
| Context context; |
| kern_return_t gpr_errs[2]; // Read/Write errors |
| kern_return_t fpu_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; |
| fpu_errs[i] = -1; |
| exc_errs[i] = -1; |
| dbg_errs[i] = -1; |
| } |
| } |
| void InvalidateAllRegisterStates() |
| { |
| SetError (e_regSetALL, Read, -1); |
| } |
| kern_return_t 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 e_regSetALL: return gpr_errs[err_idx] | |
| fpu_errs[err_idx] | |
| exc_errs[err_idx]; |
| case e_regSetGPR: return gpr_errs[err_idx]; |
| case e_regSetFPU: return fpu_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 flavor, uint32_t err_idx, kern_return_t err) |
| { |
| if (err_idx < kNumErrors) |
| { |
| switch (flavor) |
| { |
| case e_regSetALL: |
| gpr_errs[err_idx] = |
| fpu_errs[err_idx] = |
| exc_errs[err_idx] = |
| dbg_errs[err_idx] = err; |
| return true; |
| |
| case e_regSetGPR: |
| gpr_errs[err_idx] = err; |
| return true; |
| |
| case e_regSetFPU: |
| fpu_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 flavor) const |
| { |
| return GetError(flavor, Read) == KERN_SUCCESS; |
| } |
| }; |
| |
| kern_return_t GetGPRState (bool force); |
| kern_return_t GetFPUState (bool force); |
| kern_return_t GetEXCState (bool force); |
| kern_return_t GetDBGState (bool force); |
| |
| kern_return_t SetGPRState (); |
| kern_return_t SetFPUState (); |
| kern_return_t SetEXCState (); |
| kern_return_t SetDBGState (); |
| |
| static DNBArchProtocol * |
| Create (MachThread *thread); |
| |
| static const uint8_t * const |
| SoftwareBreakpointOpcode (nub_size_t byte_size); |
| |
| static const DNBRegisterSetInfo * |
| GetRegisterSetInfo(nub_size_t *num_reg_sets); |
| |
| // Helper functions for watchpoint manipulations. |
| static void SetWatchpoint(DBG &debug_state, uint32_t hw_index, nub_addr_t addr, nub_size_t size, bool read, bool write); |
| static void ClearWatchpoint(DBG &debug_state, uint32_t hw_index); |
| static bool IsWatchpointVacant(const DBG &debug_state, uint32_t hw_index); |
| static void ClearWatchpointHits(DBG &debug_state); |
| static bool IsWatchpointHit(const DBG &debug_state, uint32_t hw_index); |
| static nub_addr_t GetWatchAddress(const DBG &debug_state, uint32_t hw_index); |
| |
| MachThread *m_thread; |
| State m_state; |
| }; |
| |
| #endif // #if defined (__i386__) || defined (__x86_64__) |
| #endif // #ifndef __DNBArchImplI386_h__ |
