| //===-- RegisterContextLinux_x86_64.cpp ------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===---------------------------------------------------------------------===// |
| |
| #include "RegisterContextLinux_x86_64.h" |
| #include "RegisterContextLinux_i386.h" |
| #include "RegisterContextPOSIX_x86.h" |
| #include <vector> |
| |
| using namespace lldb_private; |
| using namespace lldb; |
| |
| typedef struct _GPR { |
| uint64_t r15; |
| uint64_t r14; |
| uint64_t r13; |
| uint64_t r12; |
| uint64_t rbp; |
| uint64_t rbx; |
| uint64_t r11; |
| uint64_t r10; |
| uint64_t r9; |
| uint64_t r8; |
| uint64_t rax; |
| uint64_t rcx; |
| uint64_t rdx; |
| uint64_t rsi; |
| uint64_t rdi; |
| uint64_t orig_rax; |
| uint64_t rip; |
| uint64_t cs; |
| uint64_t rflags; |
| uint64_t rsp; |
| uint64_t ss; |
| uint64_t fs_base; |
| uint64_t gs_base; |
| uint64_t ds; |
| uint64_t es; |
| uint64_t fs; |
| uint64_t gs; |
| } GPR; |
| |
| struct DBG { |
| uint64_t dr[8]; |
| }; |
| |
| struct UserArea { |
| GPR gpr; // General purpose registers. |
| int32_t fpvalid; // True if FPU is being used. |
| int32_t pad0; |
| FXSAVE fpr; // General purpose floating point registers (see FPR for extended |
| // register sets). |
| uint64_t tsize; // Text segment size. |
| uint64_t dsize; // Data segment size. |
| uint64_t ssize; // Stack segment size. |
| uint64_t start_code; // VM address of text. |
| uint64_t start_stack; // VM address of stack bottom (top in rsp). |
| int64_t signal; // Signal causing core dump. |
| int32_t reserved; // Unused. |
| int32_t pad1; |
| uint64_t ar0; // Location of GPR's. |
| FXSAVE *fpstate; // Location of FPR's. |
| uint64_t magic; // Identifier for core dumps. |
| char u_comm[32]; // Command causing core dump. |
| DBG dbg; // Debug registers. |
| uint64_t error_code; // CPU error code. |
| uint64_t fault_address; // Control register CR3. |
| }; |
| |
| #define DR_OFFSET(reg_index) \ |
| (LLVM_EXTENSION offsetof(UserArea, dbg) + \ |
| LLVM_EXTENSION offsetof(DBG, dr[reg_index])) |
| |
| //--------------------------------------------------------------------------- |
| // Include RegisterInfos_x86_64 to declare our g_register_infos_x86_64 |
| // structure. |
| //--------------------------------------------------------------------------- |
| #define DECLARE_REGISTER_INFOS_X86_64_STRUCT |
| #include "RegisterInfos_x86_64.h" |
| #undef DECLARE_REGISTER_INFOS_X86_64_STRUCT |
| |
| static std::vector<lldb_private::RegisterInfo> &GetPrivateRegisterInfoVector() { |
| static std::vector<lldb_private::RegisterInfo> g_register_infos; |
| return g_register_infos; |
| } |
| |
| static const RegisterInfo * |
| GetRegisterInfo_i386(const lldb_private::ArchSpec &arch) { |
| std::vector<lldb_private::RegisterInfo> &g_register_infos = |
| GetPrivateRegisterInfoVector(); |
| |
| // Allocate RegisterInfo only once |
| if (g_register_infos.empty()) { |
| // Copy the register information from base class |
| std::unique_ptr<RegisterContextLinux_i386> reg_interface( |
| new RegisterContextLinux_i386(arch)); |
| const RegisterInfo *base_info = reg_interface->GetRegisterInfo(); |
| g_register_infos.insert(g_register_infos.end(), &base_info[0], |
| &base_info[k_num_registers_i386]); |
| |
| //--------------------------------------------------------------------------- |
| // Include RegisterInfos_x86_64 to update the g_register_infos structure |
| // with x86_64 offsets. |
| //--------------------------------------------------------------------------- |
| #define UPDATE_REGISTER_INFOS_I386_STRUCT_WITH_X86_64_OFFSETS |
| #include "RegisterInfos_x86_64.h" |
| #undef UPDATE_REGISTER_INFOS_I386_STRUCT_WITH_X86_64_OFFSETS |
| } |
| |
| return &g_register_infos[0]; |
| } |
| |
| static const RegisterInfo *GetRegisterInfoPtr(const ArchSpec &target_arch) { |
| switch (target_arch.GetMachine()) { |
| case llvm::Triple::x86: |
| return GetRegisterInfo_i386(target_arch); |
| case llvm::Triple::x86_64: |
| return g_register_infos_x86_64; |
| default: |
| assert(false && "Unhandled target architecture."); |
| return nullptr; |
| } |
| } |
| |
| static uint32_t GetRegisterInfoCount(const ArchSpec &target_arch) { |
| switch (target_arch.GetMachine()) { |
| case llvm::Triple::x86: { |
| assert(!GetPrivateRegisterInfoVector().empty() && |
| "i386 register info not yet filled."); |
| return static_cast<uint32_t>(GetPrivateRegisterInfoVector().size()); |
| } |
| case llvm::Triple::x86_64: |
| return static_cast<uint32_t>(sizeof(g_register_infos_x86_64) / |
| sizeof(g_register_infos_x86_64[0])); |
| default: |
| assert(false && "Unhandled target architecture."); |
| return 0; |
| } |
| } |
| |
| static uint32_t GetUserRegisterInfoCount(const ArchSpec &target_arch) { |
| switch (target_arch.GetMachine()) { |
| case llvm::Triple::x86: |
| return static_cast<uint32_t>(k_num_user_registers_i386); |
| case llvm::Triple::x86_64: |
| return static_cast<uint32_t>(k_num_user_registers_x86_64); |
| default: |
| assert(false && "Unhandled target architecture."); |
| return 0; |
| } |
| } |
| |
| RegisterContextLinux_x86_64::RegisterContextLinux_x86_64( |
| const ArchSpec &target_arch) |
| : lldb_private::RegisterInfoInterface(target_arch), |
| m_register_info_p(GetRegisterInfoPtr(target_arch)), |
| m_register_info_count(GetRegisterInfoCount(target_arch)), |
| m_user_register_count(GetUserRegisterInfoCount(target_arch)) { |
| RegisterInfo orig_ax = {"orig_rax", |
| NULL, |
| sizeof(((GPR *)NULL)->orig_rax), |
| (LLVM_EXTENSION offsetof(GPR, orig_rax)), |
| eEncodingUint, |
| eFormatHex, |
| {LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, |
| LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, |
| LLDB_INVALID_REGNUM}, |
| nullptr, |
| nullptr, |
| nullptr, |
| 0}; |
| d_register_infos.push_back(orig_ax); |
| } |
| |
| size_t RegisterContextLinux_x86_64::GetGPRSize() const { return sizeof(GPR); } |
| |
| const std::vector<lldb_private::RegisterInfo> * |
| RegisterContextLinux_x86_64::GetDynamicRegisterInfoP() const { |
| return &d_register_infos; |
| } |
| |
| const RegisterInfo *RegisterContextLinux_x86_64::GetRegisterInfo() const { |
| return m_register_info_p; |
| } |
| |
| uint32_t RegisterContextLinux_x86_64::GetRegisterCount() const { |
| return m_register_info_count; |
| } |
| |
| uint32_t RegisterContextLinux_x86_64::GetUserRegisterCount() const { |
| return m_user_register_count; |
| } |