| //===-- RegisterContextNetBSD_i386.cpp -------------------------*- 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 |
| // |
| //===---------------------------------------------------------------------===// |
| |
| #include "RegisterContextNetBSD_i386.h" |
| #include "RegisterContextPOSIX_x86.h" |
| |
| using namespace lldb_private; |
| using namespace lldb; |
| |
| // this needs to match 'struct reg' |
| struct GPR { |
| uint32_t eax; |
| uint32_t ecx; |
| uint32_t edx; |
| uint32_t ebx; |
| uint32_t esp; |
| uint32_t ebp; |
| uint32_t esi; |
| uint32_t edi; |
| uint32_t eip; |
| uint32_t eflags; |
| uint32_t cs; |
| uint32_t ss; |
| uint32_t ds; |
| uint32_t es; |
| uint32_t fs; |
| uint32_t gs; |
| }; |
| |
| struct FPR_i386 { |
| uint16_t fctrl; // FPU Control Word (fcw) |
| uint16_t fstat; // FPU Status Word (fsw) |
| uint16_t ftag; // FPU Tag Word (ftw) |
| uint16_t fop; // Last Instruction Opcode (fop) |
| union { |
| struct { |
| uint64_t fip; // Instruction Pointer |
| uint64_t fdp; // Data Pointer |
| } x86_64; |
| struct { |
| uint32_t fioff; // FPU IP Offset (fip) |
| uint32_t fiseg; // FPU IP Selector (fcs) |
| uint32_t fooff; // FPU Operand Pointer Offset (foo) |
| uint32_t foseg; // FPU Operand Pointer Selector (fos) |
| } i386_; // Added _ in the end to avoid error with gcc defining i386 in some |
| // cases |
| } ptr; |
| uint32_t mxcsr; // MXCSR Register State |
| uint32_t mxcsrmask; // MXCSR Mask |
| MMSReg stmm[8]; // 8*16 bytes for each FP-reg = 128 bytes |
| XMMReg xmm[8]; // 8*16 bytes for each XMM-reg = 128 bytes |
| uint32_t padding[56]; |
| }; |
| |
| struct UserArea { |
| GPR gpr; |
| FPR_i386 i387; |
| uint32_t u_debugreg[8]; // Debug registers (DR0 - DR7). |
| uint32_t tlsbase; |
| }; |
| |
| #define DR_SIZE sizeof(((UserArea *)NULL)->u_debugreg[0]) |
| #define DR_OFFSET(reg_index) \ |
| (LLVM_EXTENSION offsetof(UserArea, u_debugreg[reg_index])) |
| |
| // Include RegisterInfos_i386 to declare our g_register_infos_i386 structure. |
| #define DECLARE_REGISTER_INFOS_I386_STRUCT |
| #include "RegisterInfos_i386.h" |
| #undef DECLARE_REGISTER_INFOS_I386_STRUCT |
| |
| RegisterContextNetBSD_i386::RegisterContextNetBSD_i386( |
| const ArchSpec &target_arch) |
| : RegisterInfoInterface(target_arch) {} |
| |
| size_t RegisterContextNetBSD_i386::GetGPRSize() const { return sizeof(GPR); } |
| |
| const RegisterInfo *RegisterContextNetBSD_i386::GetRegisterInfo() const { |
| switch (m_target_arch.GetMachine()) { |
| case llvm::Triple::x86: |
| case llvm::Triple::x86_64: |
| return g_register_infos_i386; |
| default: |
| assert(false && "Unhandled target architecture."); |
| return nullptr; |
| } |
| } |
| |
| uint32_t RegisterContextNetBSD_i386::GetRegisterCount() const { |
| return static_cast<uint32_t>(sizeof(g_register_infos_i386) / |
| sizeof(g_register_infos_i386[0])); |
| } |