1*0b57cec5SDimitry Andric //===-- RegisterContextOpenBSD_i386.cpp -----------------------------------===//
2*0b57cec5SDimitry Andric //
3*0b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4*0b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information.
5*0b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6*0b57cec5SDimitry Andric //
7*0b57cec5SDimitry Andric //===---------------------------------------------------------------------===//
8*0b57cec5SDimitry Andric 
9*0b57cec5SDimitry Andric #include "RegisterContextOpenBSD_i386.h"
10*0b57cec5SDimitry Andric #include "RegisterContextPOSIX_x86.h"
11*0b57cec5SDimitry Andric 
12*0b57cec5SDimitry Andric using namespace lldb_private;
13*0b57cec5SDimitry Andric using namespace lldb;
14*0b57cec5SDimitry Andric 
15*0b57cec5SDimitry Andric // /usr/include/machine/reg.h
16*0b57cec5SDimitry Andric struct GPR {
17*0b57cec5SDimitry Andric   uint32_t eax;
18*0b57cec5SDimitry Andric   uint32_t ecx;
19*0b57cec5SDimitry Andric   uint32_t edx;
20*0b57cec5SDimitry Andric   uint32_t ebx;
21*0b57cec5SDimitry Andric   uint32_t esp;
22*0b57cec5SDimitry Andric   uint32_t ebp;
23*0b57cec5SDimitry Andric   uint32_t esi;
24*0b57cec5SDimitry Andric   uint32_t edi;
25*0b57cec5SDimitry Andric   uint32_t eip;
26*0b57cec5SDimitry Andric   uint32_t eflags;
27*0b57cec5SDimitry Andric   uint32_t cs;
28*0b57cec5SDimitry Andric   uint32_t ss;
29*0b57cec5SDimitry Andric   uint32_t ds;
30*0b57cec5SDimitry Andric   uint32_t es;
31*0b57cec5SDimitry Andric   uint32_t fs;
32*0b57cec5SDimitry Andric   uint32_t gs;
33*0b57cec5SDimitry Andric };
34*0b57cec5SDimitry Andric 
35*0b57cec5SDimitry Andric struct dbreg {
36*0b57cec5SDimitry Andric   uint32_t dr[8]; /* debug registers */
37*0b57cec5SDimitry Andric                   /* Index 0-3: debug address registers */
38*0b57cec5SDimitry Andric                   /* Index 4-5: reserved */
39*0b57cec5SDimitry Andric                   /* Index 6: debug status */
40*0b57cec5SDimitry Andric                   /* Index 7: debug control */
41*0b57cec5SDimitry Andric };
42*0b57cec5SDimitry Andric 
43*0b57cec5SDimitry Andric using FPR_i386 = FXSAVE;
44*0b57cec5SDimitry Andric 
45*0b57cec5SDimitry Andric struct UserArea {
46*0b57cec5SDimitry Andric   GPR gpr;
47*0b57cec5SDimitry Andric   FPR_i386 i387;
48*0b57cec5SDimitry Andric };
49*0b57cec5SDimitry Andric 
50*0b57cec5SDimitry Andric #define DR_SIZE sizeof(uint32_t)
51*0b57cec5SDimitry Andric #define DR_OFFSET(reg_index) (LLVM_EXTENSION offsetof(dbreg, dr[reg_index]))
52*0b57cec5SDimitry Andric 
53*0b57cec5SDimitry Andric // Include RegisterInfos_i386 to declare our g_register_infos_i386 structure.
54*0b57cec5SDimitry Andric #define DECLARE_REGISTER_INFOS_I386_STRUCT
55*0b57cec5SDimitry Andric #include "RegisterInfos_i386.h"
56*0b57cec5SDimitry Andric #undef DECLARE_REGISTER_INFOS_I386_STRUCT
57*0b57cec5SDimitry Andric 
RegisterContextOpenBSD_i386(const ArchSpec & target_arch)58*0b57cec5SDimitry Andric RegisterContextOpenBSD_i386::RegisterContextOpenBSD_i386(
59*0b57cec5SDimitry Andric     const ArchSpec &target_arch)
60*0b57cec5SDimitry Andric     : RegisterInfoInterface(target_arch) {}
61*0b57cec5SDimitry Andric 
GetGPRSize() const62*0b57cec5SDimitry Andric size_t RegisterContextOpenBSD_i386::GetGPRSize() const { return sizeof(GPR); }
63*0b57cec5SDimitry Andric 
GetRegisterInfo() const64*0b57cec5SDimitry Andric const RegisterInfo *RegisterContextOpenBSD_i386::GetRegisterInfo() const {
65*0b57cec5SDimitry Andric   switch (m_target_arch.GetMachine()) {
66*0b57cec5SDimitry Andric   case llvm::Triple::x86:
67*0b57cec5SDimitry Andric     return g_register_infos_i386;
68*0b57cec5SDimitry Andric   default:
69*0b57cec5SDimitry Andric     assert(false && "Unhandled target architecture.");
70*0b57cec5SDimitry Andric     return nullptr;
71*0b57cec5SDimitry Andric   }
72*0b57cec5SDimitry Andric }
73*0b57cec5SDimitry Andric 
GetRegisterCount() const74*0b57cec5SDimitry Andric uint32_t RegisterContextOpenBSD_i386::GetRegisterCount() const {
75*0b57cec5SDimitry Andric   return static_cast<uint32_t>(sizeof(g_register_infos_i386) /
76*0b57cec5SDimitry Andric                                sizeof(g_register_infos_i386[0]));
77*0b57cec5SDimitry Andric }
78