| 1 | //===-- RegisterContextFreeBSD_i386.cpp -----------------------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===---------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "RegisterContextFreeBSD_i386.h" |
| 10 | #include "RegisterContextPOSIX_x86.h" |
| 11 | |
| 12 | using namespace lldb_private; |
| 13 | using namespace lldb; |
| 14 | |
| 15 | // http://svnweb.freebsd.org/base/head/sys/x86/include/reg.h |
| 16 | struct GPR { |
| 17 | uint32_t fs; |
| 18 | uint32_t es; |
| 19 | uint32_t ds; |
| 20 | uint32_t edi; |
| 21 | uint32_t esi; |
| 22 | uint32_t ebp; |
| 23 | uint32_t isp; |
| 24 | uint32_t ebx; |
| 25 | uint32_t edx; |
| 26 | uint32_t ecx; |
| 27 | uint32_t eax; |
| 28 | uint32_t trapno; |
| 29 | uint32_t err; |
| 30 | uint32_t eip; |
| 31 | uint32_t cs; |
| 32 | uint32_t eflags; |
| 33 | uint32_t esp; |
| 34 | uint32_t ss; |
| 35 | uint32_t gs; |
| 36 | }; |
| 37 | |
| 38 | struct DBG { |
| 39 | uint32_t dr[8]; /* debug registers */ |
| 40 | /* Index 0-3: debug address registers */ |
| 41 | /* Index 4-5: reserved */ |
| 42 | /* Index 6: debug status */ |
| 43 | /* Index 7: debug control */ |
| 44 | }; |
| 45 | |
| 46 | using FPR_i386 = FXSAVE; |
| 47 | |
| 48 | struct UserArea { |
| 49 | GPR gpr; |
| 50 | FPR_i386 i387; |
| 51 | DBG dbg; |
| 52 | }; |
| 53 | |
| 54 | #define DR_SIZE sizeof(uint32_t) |
| 55 | #define DR_OFFSET(reg_index) \ |
| 56 | (LLVM_EXTENSION offsetof(UserArea, dbg) + \ |
| 57 | LLVM_EXTENSION offsetof(DBG, dr[reg_index])) |
| 58 | |
| 59 | // Include RegisterInfos_i386 to declare our g_register_infos_i386 structure. |
| 60 | #define DECLARE_REGISTER_INFOS_I386_STRUCT |
| 61 | #include "RegisterInfos_i386.h" |
| 62 | #undef DECLARE_REGISTER_INFOS_I386_STRUCT |
| 63 | |
| 64 | RegisterContextFreeBSD_i386::RegisterContextFreeBSD_i386( |
| 65 | const ArchSpec &target_arch) |
| 66 | : RegisterInfoInterface(target_arch) {} |
| 67 | |
| 68 | size_t RegisterContextFreeBSD_i386::GetGPRSize() const { return sizeof(GPR); } |
| 69 | |
| 70 | const RegisterInfo *RegisterContextFreeBSD_i386::GetRegisterInfo() const { |
| 71 | switch (GetTargetArchitecture().GetMachine()) { |
| 72 | case llvm::Triple::x86: |
| 73 | return g_register_infos_i386; |
| 74 | default: |
| 75 | assert(false && "Unhandled target architecture."); |
| 76 | return nullptr; |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | uint32_t RegisterContextFreeBSD_i386::GetRegisterCount() const { |
| 81 | return static_cast<uint32_t>(sizeof(g_register_infos_i386) / |
| 82 | sizeof(g_register_infos_i386[0])); |
| 83 | } |
| 84 |