| //===-- DNBArchImplI386.cpp -------------------------------------*- 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. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #if defined (__i386__) || defined (__x86_64__) |
| |
| #include <sys/cdefs.h> |
| |
| #include "MacOSX/i386/DNBArchImplI386.h" |
| #include "DNBLog.h" |
| #include "MachThread.h" |
| #include "MachProcess.h" |
| |
| enum |
| { |
| gpr_eax = 0, |
| gpr_ebx = 1, |
| gpr_ecx = 2, |
| gpr_edx = 3, |
| gpr_edi = 4, |
| gpr_esi = 5, |
| gpr_ebp = 6, |
| gpr_esp = 7, |
| gpr_ss = 8, |
| gpr_eflags = 9, |
| gpr_eip = 10, |
| gpr_cs = 11, |
| gpr_ds = 12, |
| gpr_es = 13, |
| gpr_fs = 14, |
| gpr_gs = 15, |
| k_num_gpr_regs |
| }; |
| |
| enum { |
| fpu_fcw, |
| fpu_fsw, |
| fpu_ftw, |
| fpu_fop, |
| fpu_ip, |
| fpu_cs, |
| fpu_dp, |
| fpu_ds, |
| fpu_mxcsr, |
| fpu_mxcsrmask, |
| fpu_stmm0, |
| fpu_stmm1, |
| fpu_stmm2, |
| fpu_stmm3, |
| fpu_stmm4, |
| fpu_stmm5, |
| fpu_stmm6, |
| fpu_stmm7, |
| fpu_xmm0, |
| fpu_xmm1, |
| fpu_xmm2, |
| fpu_xmm3, |
| fpu_xmm4, |
| fpu_xmm5, |
| fpu_xmm6, |
| fpu_xmm7, |
| k_num_fpu_regs, |
| |
| // Aliases |
| fpu_fctrl = fpu_fcw, |
| fpu_fstat = fpu_fsw, |
| fpu_ftag = fpu_ftw, |
| fpu_fiseg = fpu_cs, |
| fpu_fioff = fpu_ip, |
| fpu_foseg = fpu_ds, |
| fpu_fooff = fpu_dp |
| }; |
| |
| enum { |
| exc_trapno, |
| exc_err, |
| exc_faultvaddr, |
| k_num_exc_regs, |
| }; |
| |
| |
| enum |
| { |
| gcc_eax = 0, |
| gcc_ecx, |
| gcc_edx, |
| gcc_ebx, |
| gcc_ebp, |
| gcc_esp, |
| gcc_esi, |
| gcc_edi, |
| gcc_eip, |
| gcc_eflags |
| }; |
| |
| enum |
| { |
| dwarf_eax = 0, |
| dwarf_ecx, |
| dwarf_edx, |
| dwarf_ebx, |
| dwarf_esp, |
| dwarf_ebp, |
| dwarf_esi, |
| dwarf_edi, |
| dwarf_eip, |
| dwarf_eflags, |
| dwarf_stmm0 = 11, |
| dwarf_stmm1, |
| dwarf_stmm2, |
| dwarf_stmm3, |
| dwarf_stmm4, |
| dwarf_stmm5, |
| dwarf_stmm6, |
| dwarf_stmm7, |
| dwarf_xmm0 = 21, |
| dwarf_xmm1, |
| dwarf_xmm2, |
| dwarf_xmm3, |
| dwarf_xmm4, |
| dwarf_xmm5, |
| dwarf_xmm6, |
| dwarf_xmm7 |
| }; |
| |
| enum |
| { |
| gdb_eax = 0, |
| gdb_ecx = 1, |
| gdb_edx = 2, |
| gdb_ebx = 3, |
| gdb_esp = 4, |
| gdb_ebp = 5, |
| gdb_esi = 6, |
| gdb_edi = 7, |
| gdb_eip = 8, |
| gdb_eflags = 9, |
| gdb_cs = 10, |
| gdb_ss = 11, |
| gdb_ds = 12, |
| gdb_es = 13, |
| gdb_fs = 14, |
| gdb_gs = 15, |
| gdb_stmm0 = 16, |
| gdb_stmm1 = 17, |
| gdb_stmm2 = 18, |
| gdb_stmm3 = 19, |
| gdb_stmm4 = 20, |
| gdb_stmm5 = 21, |
| gdb_stmm6 = 22, |
| gdb_stmm7 = 23, |
| gdb_fctrl = 24, gdb_fcw = gdb_fctrl, |
| gdb_fstat = 25, gdb_fsw = gdb_fstat, |
| gdb_ftag = 26, gdb_ftw = gdb_ftag, |
| gdb_fiseg = 27, gdb_fpu_cs = gdb_fiseg, |
| gdb_fioff = 28, gdb_ip = gdb_fioff, |
| gdb_foseg = 29, gdb_fpu_ds = gdb_foseg, |
| gdb_fooff = 30, gdb_dp = gdb_fooff, |
| gdb_fop = 31, |
| gdb_xmm0 = 32, |
| gdb_xmm1 = 33, |
| gdb_xmm2 = 34, |
| gdb_xmm3 = 35, |
| gdb_xmm4 = 36, |
| gdb_xmm5 = 37, |
| gdb_xmm6 = 38, |
| gdb_xmm7 = 39, |
| gdb_mxcsr = 40, |
| gdb_mm0 = 41, |
| gdb_mm1 = 42, |
| gdb_mm2 = 43, |
| gdb_mm3 = 44, |
| gdb_mm4 = 45, |
| gdb_mm5 = 46, |
| gdb_mm6 = 47, |
| gdb_mm7 = 48 |
| }; |
| |
| uint64_t |
| DNBArchImplI386::GetPC(uint64_t failValue) |
| { |
| // Get program counter |
| if (GetGPRState(false) == KERN_SUCCESS) |
| return m_state.context.gpr.__eip; |
| return failValue; |
| } |
| |
| kern_return_t |
| DNBArchImplI386::SetPC(uint64_t value) |
| { |
| // Get program counter |
| kern_return_t err = GetGPRState(false); |
| if (err == KERN_SUCCESS) |
| { |
| m_state.context.gpr.__eip = value; |
| err = SetGPRState(); |
| } |
| return err == KERN_SUCCESS; |
| } |
| |
| uint64_t |
| DNBArchImplI386::GetSP(uint64_t failValue) |
| { |
| // Get stack pointer |
| if (GetGPRState(false) == KERN_SUCCESS) |
| return m_state.context.gpr.__esp; |
| return failValue; |
| } |
| |
| // Uncomment the value below to verify the values in the debugger. |
| //#define DEBUG_GPR_VALUES 1 // DO NOT CHECK IN WITH THIS DEFINE ENABLED |
| //#define SET_GPR(reg) m_state.context.gpr.__##reg = gpr_##reg |
| |
| kern_return_t |
| DNBArchImplI386::GetGPRState(bool force) |
| { |
| if (force || m_state.GetError(e_regSetGPR, Read)) |
| { |
| #if DEBUG_GPR_VALUES |
| SET_GPR(eax); |
| SET_GPR(ebx); |
| SET_GPR(ecx); |
| SET_GPR(edx); |
| SET_GPR(edi); |
| SET_GPR(esi); |
| SET_GPR(ebp); |
| SET_GPR(esp); |
| SET_GPR(ss); |
| SET_GPR(eflags); |
| SET_GPR(eip); |
| SET_GPR(cs); |
| SET_GPR(ds); |
| SET_GPR(es); |
| SET_GPR(fs); |
| SET_GPR(gs); |
| m_state.SetError(e_regSetGPR, Read, 0); |
| #else |
| mach_msg_type_number_t count = e_regSetWordSizeGPR; |
| m_state.SetError(e_regSetGPR, Read, ::thread_get_state(m_thread->ThreadID(), x86_THREAD_STATE32, (thread_state_t)&m_state.context.gpr, &count)); |
| #endif |
| } |
| return m_state.GetError(e_regSetGPR, Read); |
| } |
| |
| // Uncomment the value below to verify the values in the debugger. |
| //#define DEBUG_FPU_VALUES 1 // DO NOT CHECK IN WITH THIS DEFINE ENABLED |
| |
| kern_return_t |
| DNBArchImplI386::GetFPUState(bool force) |
| { |
| if (force || m_state.GetError(e_regSetFPU, Read)) |
| { |
| #if DEBUG_FPU_VALUES |
| m_state.context.fpu.__fpu_reserved[0] = -1; |
| m_state.context.fpu.__fpu_reserved[1] = -1; |
| *(uint16_t *)&(m_state.context.fpu.__fpu_fcw) = 0x1234; |
| *(uint16_t *)&(m_state.context.fpu.__fpu_fsw) = 0x5678; |
| m_state.context.fpu.__fpu_ftw = 1; |
| m_state.context.fpu.__fpu_rsrv1 = UINT8_MAX; |
| m_state.context.fpu.__fpu_fop = 2; |
| m_state.context.fpu.__fpu_ip = 3; |
| m_state.context.fpu.__fpu_cs = 4; |
| m_state.context.fpu.__fpu_rsrv2 = 5; |
| m_state.context.fpu.__fpu_dp = 6; |
| m_state.context.fpu.__fpu_ds = 7; |
| m_state.context.fpu.__fpu_rsrv3 = UINT16_MAX; |
| m_state.context.fpu.__fpu_mxcsr = 8; |
| m_state.context.fpu.__fpu_mxcsrmask = 9; |
| int i; |
| for (i=0; i<16; ++i) |
| { |
| if (i<10) |
| { |
| m_state.context.fpu.__fpu_stmm0.__mmst_reg[i] = 'a'; |
| m_state.context.fpu.__fpu_stmm1.__mmst_reg[i] = 'b'; |
| m_state.context.fpu.__fpu_stmm2.__mmst_reg[i] = 'c'; |
| m_state.context.fpu.__fpu_stmm3.__mmst_reg[i] = 'd'; |
| m_state.context.fpu.__fpu_stmm4.__mmst_reg[i] = 'e'; |
| m_state.context.fpu.__fpu_stmm5.__mmst_reg[i] = 'f'; |
| m_state.context.fpu.__fpu_stmm6.__mmst_reg[i] = 'g'; |
| m_state.context.fpu.__fpu_stmm7.__mmst_reg[i] = 'h'; |
| } |
| else |
| { |
| m_state.context.fpu.__fpu_stmm0.__mmst_reg[i] = INT8_MIN; |
| m_state.context.fpu.__fpu_stmm1.__mmst_reg[i] = INT8_MIN; |
| m_state.context.fpu.__fpu_stmm2.__mmst_reg[i] = INT8_MIN; |
| m_state.context.fpu.__fpu_stmm3.__mmst_reg[i] = INT8_MIN; |
| m_state.context.fpu.__fpu_stmm4.__mmst_reg[i] = INT8_MIN; |
| m_state.context.fpu.__fpu_stmm5.__mmst_reg[i] = INT8_MIN; |
| m_state.context.fpu.__fpu_stmm6.__mmst_reg[i] = INT8_MIN; |
| m_state.context.fpu.__fpu_stmm7.__mmst_reg[i] = INT8_MIN; |
| } |
| |
| m_state.context.fpu.__fpu_xmm0.__xmm_reg[i] = '0'; |
| m_state.context.fpu.__fpu_xmm1.__xmm_reg[i] = '1'; |
| m_state.context.fpu.__fpu_xmm2.__xmm_reg[i] = '2'; |
| m_state.context.fpu.__fpu_xmm3.__xmm_reg[i] = '3'; |
| m_state.context.fpu.__fpu_xmm4.__xmm_reg[i] = '4'; |
| m_state.context.fpu.__fpu_xmm5.__xmm_reg[i] = '5'; |
| m_state.context.fpu.__fpu_xmm6.__xmm_reg[i] = '6'; |
| m_state.context.fpu.__fpu_xmm7.__xmm_reg[i] = '7'; |
| } |
| for (i=0; i<sizeof(m_state.context.fpu.__fpu_rsrv4); ++i) |
| m_state.context.fpu.__fpu_rsrv4[i] = INT8_MIN; |
| m_state.context.fpu.__fpu_reserved1 = -1; |
| m_state.SetError(e_regSetFPU, Read, 0); |
| #else |
| mach_msg_type_number_t count = e_regSetWordSizeFPR; |
| m_state.SetError(e_regSetFPU, Read, ::thread_get_state(m_thread->ThreadID(), x86_FLOAT_STATE32, (thread_state_t)&m_state.context.fpu, &count)); |
| #endif |
| } |
| return m_state.GetError(e_regSetFPU, Read); |
| } |
| |
| kern_return_t |
| DNBArchImplI386::GetEXCState(bool force) |
| { |
| if (force || m_state.GetError(e_regSetEXC, Read)) |
| { |
| mach_msg_type_number_t count = e_regSetWordSizeEXC; |
| m_state.SetError(e_regSetEXC, Read, ::thread_get_state(m_thread->ThreadID(), x86_EXCEPTION_STATE32, (thread_state_t)&m_state.context.exc, &count)); |
| } |
| return m_state.GetError(e_regSetEXC, Read); |
| } |
| |
| kern_return_t |
| DNBArchImplI386::SetGPRState() |
| { |
| m_state.SetError(e_regSetGPR, Write, ::thread_set_state(m_thread->ThreadID(), x86_THREAD_STATE32, (thread_state_t)&m_state.context.gpr, e_regSetWordSizeGPR)); |
| return m_state.GetError(e_regSetGPR, Write); |
| } |
| |
| kern_return_t |
| DNBArchImplI386::SetFPUState() |
| { |
| m_state.SetError(e_regSetFPU, Write, ::thread_set_state(m_thread->ThreadID(), x86_FLOAT_STATE32, (thread_state_t)&m_state.context.fpu, e_regSetWordSizeFPR)); |
| return m_state.GetError(e_regSetFPU, Write); |
| } |
| |
| kern_return_t |
| DNBArchImplI386::SetEXCState() |
| { |
| m_state.SetError(e_regSetEXC, Write, ::thread_set_state(m_thread->ThreadID(), x86_EXCEPTION_STATE32, (thread_state_t)&m_state.context.exc, e_regSetWordSizeEXC)); |
| return m_state.GetError(e_regSetEXC, Write); |
| } |
| |
| void |
| DNBArchImplI386::ThreadWillResume() |
| { |
| // Do we need to step this thread? If so, let the mach thread tell us so. |
| if (m_thread->IsStepping()) |
| { |
| // This is the primary thread, let the arch do anything it needs |
| EnableHardwareSingleStep(true) == KERN_SUCCESS; |
| } |
| } |
| |
| bool |
| DNBArchImplI386::ThreadDidStop() |
| { |
| bool success = true; |
| |
| m_state.InvalidateAllRegisterStates(); |
| |
| // Are we stepping a single instruction? |
| if (GetGPRState(true) == KERN_SUCCESS) |
| { |
| // We are single stepping, was this the primary thread? |
| if (m_thread->IsStepping()) |
| { |
| // This was the primary thread, we need to clear the trace |
| // bit if so. |
| success = EnableHardwareSingleStep(false) == KERN_SUCCESS; |
| } |
| else |
| { |
| // The MachThread will automatically restore the suspend count |
| // in ThreadDidStop(), so we don't need to do anything here if |
| // we weren't the primary thread the last time |
| } |
| } |
| return success; |
| } |
| |
| bool |
| DNBArchImplI386::NotifyException(MachException::Data& exc) |
| { |
| switch (exc.exc_type) |
| { |
| case EXC_BAD_ACCESS: |
| break; |
| case EXC_BAD_INSTRUCTION: |
| break; |
| case EXC_ARITHMETIC: |
| break; |
| case EXC_EMULATION: |
| break; |
| case EXC_SOFTWARE: |
| break; |
| case EXC_BREAKPOINT: |
| if (exc.exc_data.size() >= 2 && exc.exc_data[0] == 2) |
| { |
| nub_addr_t pc = GetPC(INVALID_NUB_ADDRESS); |
| if (pc != INVALID_NUB_ADDRESS && pc > 0) |
| { |
| pc -= 1; |
| // Check for a breakpoint at one byte prior to the current PC value |
| // since the PC will be just past the trap. |
| |
| nub_break_t breakID = m_thread->Process()->Breakpoints().FindIDByAddress(pc); |
| if (NUB_BREAK_ID_IS_VALID(breakID)) |
| { |
| // Backup the PC for i386 since the trap was taken and the PC |
| // is at the address following the single byte trap instruction. |
| if (m_state.context.gpr.__eip > 0) |
| { |
| m_state.context.gpr.__eip = pc; |
| // Write the new PC back out |
| SetGPRState (); |
| } |
| } |
| return true; |
| } |
| } |
| break; |
| case EXC_SYSCALL: |
| break; |
| case EXC_MACH_SYSCALL: |
| break; |
| case EXC_RPC_ALERT: |
| break; |
| } |
| return false; |
| } |
| |
| |
| // Set the single step bit in the processor status register. |
| kern_return_t |
| DNBArchImplI386::EnableHardwareSingleStep (bool enable) |
| { |
| if (GetGPRState(false) == KERN_SUCCESS) |
| { |
| const uint32_t trace_bit = 0x100u; |
| if (enable) |
| m_state.context.gpr.__eflags |= trace_bit; |
| else |
| m_state.context.gpr.__eflags &= ~trace_bit; |
| return SetGPRState(); |
| } |
| return m_state.GetError(e_regSetGPR, Read); |
| } |
| |
| |
| //---------------------------------------------------------------------- |
| // Register information defintions |
| //---------------------------------------------------------------------- |
| |
| |
| #define GPR_OFFSET(reg) (offsetof (DNBArchImplI386::GPR, __##reg)) |
| #define FPU_OFFSET(reg) (offsetof (DNBArchImplI386::FPU, __fpu_##reg) + offsetof (DNBArchImplI386::Context, fpu)) |
| #define EXC_OFFSET(reg) (offsetof (DNBArchImplI386::EXC, __##reg) + offsetof (DNBArchImplI386::Context, exc)) |
| |
| #define GPR_SIZE(reg) (sizeof(((DNBArchImplI386::GPR *)NULL)->__##reg)) |
| #define FPU_SIZE_UINT(reg) (sizeof(((DNBArchImplI386::FPU *)NULL)->__fpu_##reg)) |
| #define FPU_SIZE_MMST(reg) (sizeof(((DNBArchImplI386::FPU *)NULL)->__fpu_##reg.__mmst_reg)) |
| #define FPU_SIZE_XMM(reg) (sizeof(((DNBArchImplI386::FPU *)NULL)->__fpu_##reg.__xmm_reg)) |
| #define EXC_SIZE(reg) (sizeof(((DNBArchImplI386::EXC *)NULL)->__##reg)) |
| |
| // These macros will auto define the register name, alt name, register size, |
| // register offset, encoding, format and native register. This ensures that |
| // the register state structures are defined correctly and have the correct |
| // sizes and offsets. |
| |
| // General purpose registers for 64 bit |
| const DNBRegisterInfo |
| DNBArchImplI386::g_gpr_registers[] = |
| { |
| { e_regSetGPR, gpr_eax, "eax" , NULL , Uint, Hex, GPR_SIZE(eax), GPR_OFFSET(eax) , gcc_eax , dwarf_eax , -1 , gdb_eax }, |
| { e_regSetGPR, gpr_ebx, "ebx" , NULL , Uint, Hex, GPR_SIZE(ebx), GPR_OFFSET(ebx) , gcc_ebx , dwarf_ebx , -1 , gdb_ebx }, |
| { e_regSetGPR, gpr_ecx, "ecx" , NULL , Uint, Hex, GPR_SIZE(ecx), GPR_OFFSET(ecx) , gcc_ecx , dwarf_ecx , -1 , gdb_ecx }, |
| { e_regSetGPR, gpr_edx, "edx" , NULL , Uint, Hex, GPR_SIZE(edx), GPR_OFFSET(edx) , gcc_edx , dwarf_edx , -1 , gdb_edx }, |
| { e_regSetGPR, gpr_edi, "edi" , NULL , Uint, Hex, GPR_SIZE(edi), GPR_OFFSET(edi) , gcc_edi , dwarf_edi , -1 , gdb_edi }, |
| { e_regSetGPR, gpr_esi, "esi" , NULL , Uint, Hex, GPR_SIZE(esi), GPR_OFFSET(esi) , gcc_esi , dwarf_esi , -1 , gdb_esi }, |
| { e_regSetGPR, gpr_ebp, "ebp" , "fp" , Uint, Hex, GPR_SIZE(ebp), GPR_OFFSET(ebp) , gcc_ebp , dwarf_ebp , GENERIC_REGNUM_FP , gdb_ebp }, |
| { e_regSetGPR, gpr_esp, "esp" , "sp" , Uint, Hex, GPR_SIZE(esp), GPR_OFFSET(esp) , gcc_esp , dwarf_esp , GENERIC_REGNUM_SP , gdb_esp }, |
| { e_regSetGPR, gpr_ss, "ss" , NULL , Uint, Hex, GPR_SIZE(ss), GPR_OFFSET(ss) , -1 , -1 , -1 , gdb_ss }, |
| { e_regSetGPR, gpr_eflags, "eflags", "flags" , Uint, Hex, GPR_SIZE(eflags), GPR_OFFSET(eflags) , gcc_eflags, dwarf_eflags , GENERIC_REGNUM_FLAGS , gdb_eflags}, |
| { e_regSetGPR, gpr_eip, "eip" , "pc" , Uint, Hex, GPR_SIZE(eip), GPR_OFFSET(eip) , gcc_eip , dwarf_eip , GENERIC_REGNUM_PC , gdb_eip }, |
| { e_regSetGPR, gpr_cs, "cs" , NULL , Uint, Hex, GPR_SIZE(cs), GPR_OFFSET(cs) , -1 , -1 , -1 , gdb_cs }, |
| { e_regSetGPR, gpr_ds, "ds" , NULL , Uint, Hex, GPR_SIZE(ds), GPR_OFFSET(ds) , -1 , -1 , -1 , gdb_ds }, |
| { e_regSetGPR, gpr_es, "es" , NULL , Uint, Hex, GPR_SIZE(es), GPR_OFFSET(es) , -1 , -1 , -1 , gdb_es }, |
| { e_regSetGPR, gpr_fs, "fs" , NULL , Uint, Hex, GPR_SIZE(fs), GPR_OFFSET(fs) , -1 , -1 , -1 , gdb_fs }, |
| { e_regSetGPR, gpr_gs, "gs" , NULL , Uint, Hex, GPR_SIZE(gs), GPR_OFFSET(gs) , -1 , -1 , -1 , gdb_gs } |
| }; |
| |
| |
| const DNBRegisterInfo |
| DNBArchImplI386::g_fpu_registers[] = |
| { |
| { e_regSetFPU, fpu_fcw , "fctrl" , NULL, Uint, Hex, FPU_SIZE_UINT(fcw) , FPU_OFFSET(fcw) , -1, -1, -1, -1 }, |
| { e_regSetFPU, fpu_fsw , "fstat" , NULL, Uint, Hex, FPU_SIZE_UINT(fsw) , FPU_OFFSET(fsw) , -1, -1, -1, -1 }, |
| { e_regSetFPU, fpu_ftw , "ftag" , NULL, Uint, Hex, FPU_SIZE_UINT(ftw) , FPU_OFFSET(ftw) , -1, -1, -1, -1 }, |
| { e_regSetFPU, fpu_fop , "fop" , NULL, Uint, Hex, FPU_SIZE_UINT(fop) , FPU_OFFSET(fop) , -1, -1, -1, -1 }, |
| { e_regSetFPU, fpu_ip , "fioff" , NULL, Uint, Hex, FPU_SIZE_UINT(ip) , FPU_OFFSET(ip) , -1, -1, -1, -1 }, |
| { e_regSetFPU, fpu_cs , "fiseg" , NULL, Uint, Hex, FPU_SIZE_UINT(cs) , FPU_OFFSET(cs) , -1, -1, -1, -1 }, |
| { e_regSetFPU, fpu_dp , "fooff" , NULL, Uint, Hex, FPU_SIZE_UINT(dp) , FPU_OFFSET(dp) , -1, -1, -1, -1 }, |
| { e_regSetFPU, fpu_ds , "foseg" , NULL, Uint, Hex, FPU_SIZE_UINT(ds) , FPU_OFFSET(ds) , -1, -1, -1, -1 }, |
| { e_regSetFPU, fpu_mxcsr , "mxcsr" , NULL, Uint, Hex, FPU_SIZE_UINT(mxcsr) , FPU_OFFSET(mxcsr) , -1, -1, -1, -1 }, |
| { e_regSetFPU, fpu_mxcsrmask, "mxcsrmask" , NULL, Uint, Hex, FPU_SIZE_UINT(mxcsrmask) , FPU_OFFSET(mxcsrmask) , -1, -1, -1, -1 }, |
| |
| { e_regSetFPU, fpu_stmm0, "stmm0", NULL, Vector, VectorOfUInt8, FPU_SIZE_MMST(stmm0), FPU_OFFSET(stmm0), -1, dwarf_stmm0, -1, gdb_stmm0 }, |
| { e_regSetFPU, fpu_stmm1, "stmm1", NULL, Vector, VectorOfUInt8, FPU_SIZE_MMST(stmm1), FPU_OFFSET(stmm1), -1, dwarf_stmm1, -1, gdb_stmm1 }, |
| { e_regSetFPU, fpu_stmm2, "stmm2", NULL, Vector, VectorOfUInt8, FPU_SIZE_MMST(stmm2), FPU_OFFSET(stmm2), -1, dwarf_stmm2, -1, gdb_stmm2 }, |
| { e_regSetFPU, fpu_stmm3, "stmm3", NULL, Vector, VectorOfUInt8, FPU_SIZE_MMST(stmm3), FPU_OFFSET(stmm3), -1, dwarf_stmm3, -1, gdb_stmm3 }, |
| { e_regSetFPU, fpu_stmm4, "stmm4", NULL, Vector, VectorOfUInt8, FPU_SIZE_MMST(stmm4), FPU_OFFSET(stmm4), -1, dwarf_stmm4, -1, gdb_stmm4 }, |
| { e_regSetFPU, fpu_stmm5, "stmm5", NULL, Vector, VectorOfUInt8, FPU_SIZE_MMST(stmm5), FPU_OFFSET(stmm5), -1, dwarf_stmm5, -1, gdb_stmm5 }, |
| { e_regSetFPU, fpu_stmm6, "stmm6", NULL, Vector, VectorOfUInt8, FPU_SIZE_MMST(stmm6), FPU_OFFSET(stmm6), -1, dwarf_stmm6, -1, gdb_stmm6 }, |
| { e_regSetFPU, fpu_stmm7, "stmm7", NULL, Vector, VectorOfUInt8, FPU_SIZE_MMST(stmm7), FPU_OFFSET(stmm7), -1, dwarf_stmm7, -1, gdb_stmm7 }, |
| |
| { e_regSetFPU, fpu_xmm0, "xmm0", NULL, Vector, VectorOfUInt8, FPU_SIZE_XMM(xmm0), FPU_OFFSET(xmm0), -1, dwarf_xmm0, -1, gdb_xmm0 }, |
| { e_regSetFPU, fpu_xmm1, "xmm1", NULL, Vector, VectorOfUInt8, FPU_SIZE_XMM(xmm1), FPU_OFFSET(xmm1), -1, dwarf_xmm1, -1, gdb_xmm1 }, |
| { e_regSetFPU, fpu_xmm2, "xmm2", NULL, Vector, VectorOfUInt8, FPU_SIZE_XMM(xmm2), FPU_OFFSET(xmm2), -1, dwarf_xmm2, -1, gdb_xmm2 }, |
| { e_regSetFPU, fpu_xmm3, "xmm3", NULL, Vector, VectorOfUInt8, FPU_SIZE_XMM(xmm3), FPU_OFFSET(xmm3), -1, dwarf_xmm3, -1, gdb_xmm3 }, |
| { e_regSetFPU, fpu_xmm4, "xmm4", NULL, Vector, VectorOfUInt8, FPU_SIZE_XMM(xmm4), FPU_OFFSET(xmm4), -1, dwarf_xmm4, -1, gdb_xmm4 }, |
| { e_regSetFPU, fpu_xmm5, "xmm5", NULL, Vector, VectorOfUInt8, FPU_SIZE_XMM(xmm5), FPU_OFFSET(xmm5), -1, dwarf_xmm5, -1, gdb_xmm5 }, |
| { e_regSetFPU, fpu_xmm6, "xmm6", NULL, Vector, VectorOfUInt8, FPU_SIZE_XMM(xmm6), FPU_OFFSET(xmm6), -1, dwarf_xmm6, -1, gdb_xmm6 }, |
| { e_regSetFPU, fpu_xmm7, "xmm7", NULL, Vector, VectorOfUInt8, FPU_SIZE_XMM(xmm7), FPU_OFFSET(xmm7), -1, dwarf_xmm7, -1, gdb_xmm7 } |
| }; |
| |
| |
| |
| const DNBRegisterInfo |
| DNBArchImplI386::g_exc_registers[] = |
| { |
| { e_regSetEXC, exc_trapno, "trapno" , NULL, Uint, Hex, EXC_SIZE (trapno) , EXC_OFFSET (trapno) , -1, -1, -1, -1 }, |
| { e_regSetEXC, exc_err, "err" , NULL, Uint, Hex, EXC_SIZE (err) , EXC_OFFSET (err) , -1, -1, -1, -1 }, |
| { e_regSetEXC, exc_faultvaddr, "faultvaddr", NULL, Uint, Hex, EXC_SIZE (faultvaddr), EXC_OFFSET (faultvaddr) , -1, -1, -1, -1 } |
| }; |
| |
| // Number of registers in each register set |
| const size_t DNBArchImplI386::k_num_gpr_registers = sizeof(g_gpr_registers)/sizeof(DNBRegisterInfo); |
| const size_t DNBArchImplI386::k_num_fpu_registers = sizeof(g_fpu_registers)/sizeof(DNBRegisterInfo); |
| const size_t DNBArchImplI386::k_num_exc_registers = sizeof(g_exc_registers)/sizeof(DNBRegisterInfo); |
| const size_t DNBArchImplI386::k_num_all_registers = k_num_gpr_registers + k_num_fpu_registers + k_num_exc_registers; |
| |
| //---------------------------------------------------------------------- |
| // Register set definitions. The first definitions at register set index |
| // of zero is for all registers, followed by other registers sets. The |
| // register information for the all register set need not be filled in. |
| //---------------------------------------------------------------------- |
| const DNBRegisterSetInfo |
| DNBArchImplI386::g_reg_sets[] = |
| { |
| { "i386 Registers", NULL, k_num_all_registers }, |
| { "General Purpose Registers", g_gpr_registers, k_num_gpr_registers }, |
| { "Floating Point Registers", g_fpu_registers, k_num_fpu_registers }, |
| { "Exception State Registers", g_exc_registers, k_num_exc_registers } |
| }; |
| // Total number of register sets for this architecture |
| const size_t DNBArchImplI386::k_num_register_sets = sizeof(g_reg_sets)/sizeof(DNBRegisterSetInfo); |
| |
| |
| DNBArchProtocol * |
| DNBArchImplI386::Create (MachThread *thread) |
| { |
| return new DNBArchImplI386 (thread); |
| } |
| |
| const uint8_t * const |
| DNBArchImplI386::SoftwareBreakpointOpcode (nub_size_t byte_size) |
| { |
| static const uint8_t g_breakpoint_opcode[] = { 0xCC }; |
| if (byte_size == 1) |
| return g_breakpoint_opcode; |
| return NULL; |
| } |
| |
| const DNBRegisterSetInfo * |
| DNBArchImplI386::GetRegisterSetInfo(nub_size_t *num_reg_sets) |
| { |
| *num_reg_sets = k_num_register_sets; |
| return g_reg_sets; |
| } |
| |
| |
| void |
| DNBArchImplI386::Initialize() |
| { |
| DNBArchPluginInfo arch_plugin_info = |
| { |
| CPU_TYPE_I386, |
| DNBArchImplI386::Create, |
| DNBArchImplI386::GetRegisterSetInfo, |
| DNBArchImplI386::SoftwareBreakpointOpcode |
| }; |
| |
| // Register this arch plug-in with the main protocol class |
| DNBArchProtocol::RegisterArchPlugin (arch_plugin_info); |
| } |
| |
| bool |
| DNBArchImplI386::GetRegisterValue(int set, int reg, DNBRegisterValue *value) |
| { |
| if (set == REGISTER_SET_GENERIC) |
| { |
| switch (reg) |
| { |
| case GENERIC_REGNUM_PC: // Program Counter |
| set = e_regSetGPR; |
| reg = gpr_eip; |
| break; |
| |
| case GENERIC_REGNUM_SP: // Stack Pointer |
| set = e_regSetGPR; |
| reg = gpr_esp; |
| break; |
| |
| case GENERIC_REGNUM_FP: // Frame Pointer |
| set = e_regSetGPR; |
| reg = gpr_ebp; |
| break; |
| |
| case GENERIC_REGNUM_FLAGS: // Processor flags register |
| set = e_regSetGPR; |
| reg = gpr_eflags; |
| break; |
| |
| case GENERIC_REGNUM_RA: // Return Address |
| default: |
| return false; |
| } |
| } |
| |
| if (GetRegisterState(set, false) != KERN_SUCCESS) |
| return false; |
| |
| const DNBRegisterInfo *regInfo = m_thread->GetRegisterInfo(set, reg); |
| if (regInfo) |
| { |
| value->info = *regInfo; |
| switch (set) |
| { |
| case e_regSetGPR: |
| if (reg < k_num_gpr_registers) |
| { |
| value->value.uint32 = ((uint32_t*)(&m_state.context.gpr))[reg]; |
| return true; |
| } |
| break; |
| |
| case e_regSetFPU: |
| switch (reg) |
| { |
| case fpu_fcw: value->value.uint16 = *((uint16_t *)(&m_state.context.fpu.__fpu_fcw)); return true; |
| case fpu_fsw: value->value.uint16 = *((uint16_t *)(&m_state.context.fpu.__fpu_fsw)); return true; |
| case fpu_ftw: value->value.uint8 = m_state.context.fpu.__fpu_ftw; return true; |
| case fpu_fop: value->value.uint16 = m_state.context.fpu.__fpu_fop; return true; |
| case fpu_ip: value->value.uint32 = m_state.context.fpu.__fpu_ip; return true; |
| case fpu_cs: value->value.uint16 = m_state.context.fpu.__fpu_cs; return true; |
| case fpu_dp: value->value.uint32 = m_state.context.fpu.__fpu_dp; return true; |
| case fpu_ds: value->value.uint16 = m_state.context.fpu.__fpu_ds; return true; |
| case fpu_mxcsr: value->value.uint32 = m_state.context.fpu.__fpu_mxcsr; return true; |
| case fpu_mxcsrmask: value->value.uint32 = m_state.context.fpu.__fpu_mxcsrmask; return true; |
| |
| case fpu_stmm0: memcpy(&value->value.uint8, m_state.context.fpu.__fpu_stmm0.__mmst_reg, 10); return true; |
| case fpu_stmm1: memcpy(&value->value.uint8, m_state.context.fpu.__fpu_stmm1.__mmst_reg, 10); return true; |
| case fpu_stmm2: memcpy(&value->value.uint8, m_state.context.fpu.__fpu_stmm2.__mmst_reg, 10); return true; |
| case fpu_stmm3: memcpy(&value->value.uint8, m_state.context.fpu.__fpu_stmm3.__mmst_reg, 10); return true; |
| case fpu_stmm4: memcpy(&value->value.uint8, m_state.context.fpu.__fpu_stmm4.__mmst_reg, 10); return true; |
| case fpu_stmm5: memcpy(&value->value.uint8, m_state.context.fpu.__fpu_stmm5.__mmst_reg, 10); return true; |
| case fpu_stmm6: memcpy(&value->value.uint8, m_state.context.fpu.__fpu_stmm6.__mmst_reg, 10); return true; |
| case fpu_stmm7: memcpy(&value->value.uint8, m_state.context.fpu.__fpu_stmm7.__mmst_reg, 10); return true; |
| |
| case fpu_xmm0: memcpy(&value->value.uint8, m_state.context.fpu.__fpu_xmm0.__xmm_reg, 16); return true; |
| case fpu_xmm1: memcpy(&value->value.uint8, m_state.context.fpu.__fpu_xmm1.__xmm_reg, 16); return true; |
| case fpu_xmm2: memcpy(&value->value.uint8, m_state.context.fpu.__fpu_xmm2.__xmm_reg, 16); return true; |
| case fpu_xmm3: memcpy(&value->value.uint8, m_state.context.fpu.__fpu_xmm3.__xmm_reg, 16); return true; |
| case fpu_xmm4: memcpy(&value->value.uint8, m_state.context.fpu.__fpu_xmm4.__xmm_reg, 16); return true; |
| case fpu_xmm5: memcpy(&value->value.uint8, m_state.context.fpu.__fpu_xmm5.__xmm_reg, 16); return true; |
| case fpu_xmm6: memcpy(&value->value.uint8, m_state.context.fpu.__fpu_xmm6.__xmm_reg, 16); return true; |
| case fpu_xmm7: memcpy(&value->value.uint8, m_state.context.fpu.__fpu_xmm7.__xmm_reg, 16); return true; |
| } |
| break; |
| |
| case e_regSetEXC: |
| if (reg < k_num_exc_registers) |
| { |
| value->value.uint32 = (&m_state.context.exc.__trapno)[reg]; |
| return true; |
| } |
| break; |
| } |
| } |
| return false; |
| } |
| |
| |
| bool |
| DNBArchImplI386::SetRegisterValue(int set, int reg, const DNBRegisterValue *value) |
| { |
| if (set == REGISTER_SET_GENERIC) |
| { |
| switch (reg) |
| { |
| case GENERIC_REGNUM_PC: // Program Counter |
| set = e_regSetGPR; |
| reg = gpr_eip; |
| break; |
| |
| case GENERIC_REGNUM_SP: // Stack Pointer |
| set = e_regSetGPR; |
| reg = gpr_esp; |
| break; |
| |
| case GENERIC_REGNUM_FP: // Frame Pointer |
| set = e_regSetGPR; |
| reg = gpr_ebp; |
| break; |
| |
| case GENERIC_REGNUM_FLAGS: // Processor flags register |
| set = e_regSetGPR; |
| reg = gpr_eflags; |
| break; |
| |
| case GENERIC_REGNUM_RA: // Return Address |
| default: |
| return false; |
| } |
| } |
| |
| if (GetRegisterState(set, false) != KERN_SUCCESS) |
| return false; |
| |
| bool success = false; |
| const DNBRegisterInfo *regInfo = m_thread->GetRegisterInfo(set, reg); |
| if (regInfo) |
| { |
| switch (set) |
| { |
| case e_regSetGPR: |
| if (reg < k_num_gpr_registers) |
| { |
| ((uint32_t*)(&m_state.context.gpr))[reg] = value->value.uint32; |
| success = true; |
| } |
| break; |
| |
| case e_regSetFPU: |
| switch (reg) |
| { |
| case fpu_fcw: *((uint16_t *)(&m_state.context.fpu.__fpu_fcw)) = value->value.uint16; success = true; break; |
| case fpu_fsw: *((uint16_t *)(&m_state.context.fpu.__fpu_fsw)) = value->value.uint16; success = true; break; |
| case fpu_ftw: m_state.context.fpu.__fpu_ftw = value->value.uint8; success = true; break; |
| case fpu_fop: m_state.context.fpu.__fpu_fop = value->value.uint16; success = true; break; |
| case fpu_ip: m_state.context.fpu.__fpu_ip = value->value.uint32; success = true; break; |
| case fpu_cs: m_state.context.fpu.__fpu_cs = value->value.uint16; success = true; break; |
| case fpu_dp: m_state.context.fpu.__fpu_dp = value->value.uint32; success = true; break; |
| case fpu_ds: m_state.context.fpu.__fpu_ds = value->value.uint16; success = true; break; |
| case fpu_mxcsr: m_state.context.fpu.__fpu_mxcsr = value->value.uint32; success = true; break; |
| case fpu_mxcsrmask: m_state.context.fpu.__fpu_mxcsrmask = value->value.uint32; success = true; break; |
| |
| case fpu_stmm0: memcpy (m_state.context.fpu.__fpu_stmm0.__mmst_reg, &value->value.uint8, 10); success = true; break; |
| case fpu_stmm1: memcpy (m_state.context.fpu.__fpu_stmm1.__mmst_reg, &value->value.uint8, 10); success = true; break; |
| case fpu_stmm2: memcpy (m_state.context.fpu.__fpu_stmm2.__mmst_reg, &value->value.uint8, 10); success = true; break; |
| case fpu_stmm3: memcpy (m_state.context.fpu.__fpu_stmm3.__mmst_reg, &value->value.uint8, 10); success = true; break; |
| case fpu_stmm4: memcpy (m_state.context.fpu.__fpu_stmm4.__mmst_reg, &value->value.uint8, 10); success = true; break; |
| case fpu_stmm5: memcpy (m_state.context.fpu.__fpu_stmm5.__mmst_reg, &value->value.uint8, 10); success = true; break; |
| case fpu_stmm6: memcpy (m_state.context.fpu.__fpu_stmm6.__mmst_reg, &value->value.uint8, 10); success = true; break; |
| case fpu_stmm7: memcpy (m_state.context.fpu.__fpu_stmm7.__mmst_reg, &value->value.uint8, 10); success = true; break; |
| |
| case fpu_xmm0: memcpy(m_state.context.fpu.__fpu_xmm0.__xmm_reg, &value->value.uint8, 16); success = true; break; |
| case fpu_xmm1: memcpy(m_state.context.fpu.__fpu_xmm1.__xmm_reg, &value->value.uint8, 16); success = true; break; |
| case fpu_xmm2: memcpy(m_state.context.fpu.__fpu_xmm2.__xmm_reg, &value->value.uint8, 16); success = true; break; |
| case fpu_xmm3: memcpy(m_state.context.fpu.__fpu_xmm3.__xmm_reg, &value->value.uint8, 16); success = true; break; |
| case fpu_xmm4: memcpy(m_state.context.fpu.__fpu_xmm4.__xmm_reg, &value->value.uint8, 16); success = true; break; |
| case fpu_xmm5: memcpy(m_state.context.fpu.__fpu_xmm5.__xmm_reg, &value->value.uint8, 16); success = true; break; |
| case fpu_xmm6: memcpy(m_state.context.fpu.__fpu_xmm6.__xmm_reg, &value->value.uint8, 16); success = true; break; |
| case fpu_xmm7: memcpy(m_state.context.fpu.__fpu_xmm7.__xmm_reg, &value->value.uint8, 16); success = true; break; |
| } |
| break; |
| |
| case e_regSetEXC: |
| if (reg < k_num_exc_registers) |
| { |
| (&m_state.context.exc.__trapno)[reg] = value->value.uint32; |
| success = true; |
| } |
| break; |
| } |
| } |
| |
| if (success) |
| return SetRegisterState(set) == KERN_SUCCESS; |
| return false; |
| } |
| |
| |
| nub_size_t |
| DNBArchImplI386::GetRegisterContext (void *buf, nub_size_t buf_len) |
| { |
| nub_size_t size = sizeof (m_state.context); |
| |
| if (buf && buf_len) |
| { |
| if (size > buf_len) |
| size = buf_len; |
| |
| bool force = false; |
| if (GetGPRState(force) | GetFPUState(force) | GetEXCState(force)) |
| return 0; |
| ::memcpy (buf, &m_state.context, size); |
| } |
| DNBLogThreadedIf (LOG_THREAD, "DNBArchImplI386::GetRegisterContext (buf = %p, len = %zu) => %zu", buf, buf_len, size); |
| // Return the size of the register context even if NULL was passed in |
| return size; |
| } |
| |
| nub_size_t |
| DNBArchImplI386::SetRegisterContext (const void *buf, nub_size_t buf_len) |
| { |
| nub_size_t size = sizeof (m_state.context); |
| if (buf == NULL || buf_len == 0) |
| size = 0; |
| |
| if (size) |
| { |
| if (size > buf_len) |
| size = buf_len; |
| |
| ::memcpy (&m_state.context, buf, size); |
| SetGPRState(); |
| SetFPUState(); |
| SetEXCState(); |
| } |
| DNBLogThreadedIf (LOG_THREAD, "DNBArchImplI386::SetRegisterContext (buf = %p, len = %zu) => %zu", buf, buf_len, size); |
| return size; |
| } |
| |
| |
| |
| kern_return_t |
| DNBArchImplI386::GetRegisterState(int set, bool force) |
| { |
| switch (set) |
| { |
| case e_regSetALL: return GetGPRState(force) | GetFPUState(force) | GetEXCState(force); |
| case e_regSetGPR: return GetGPRState(force); |
| case e_regSetFPU: return GetFPUState(force); |
| case e_regSetEXC: return GetEXCState(force); |
| default: break; |
| } |
| return KERN_INVALID_ARGUMENT; |
| } |
| |
| kern_return_t |
| DNBArchImplI386::SetRegisterState(int set) |
| { |
| // Make sure we have a valid context to set. |
| if (RegisterSetStateIsValid(set)) |
| { |
| switch (set) |
| { |
| case e_regSetALL: return SetGPRState() | SetFPUState() | SetEXCState(); |
| case e_regSetGPR: return SetGPRState(); |
| case e_regSetFPU: return SetFPUState(); |
| case e_regSetEXC: return SetEXCState(); |
| default: break; |
| } |
| } |
| return KERN_INVALID_ARGUMENT; |
| } |
| |
| bool |
| DNBArchImplI386::RegisterSetStateIsValid (int set) const |
| { |
| return m_state.RegsAreValid(set); |
| } |
| |
| |
| |
| #endif // #if defined (__i386__) |
