1//===-- RegisterContextOpenBSD_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 "RegisterContextOpenBSD_i386.h"
10#include "RegisterContextPOSIX_x86.h"
11
12using namespace lldb_private;
13using namespace lldb;
14
15// /usr/include/machine/reg.h
16struct GPR {
17  uint32_t eax;
18  uint32_t ecx;
19  uint32_t edx;
20  uint32_t ebx;
21  uint32_t esp;
22  uint32_t ebp;
23  uint32_t esi;
24  uint32_t edi;
25  uint32_t eip;
26  uint32_t eflags;
27  uint32_t cs;
28  uint32_t ss;
29  uint32_t ds;
30  uint32_t es;
31  uint32_t fs;
32  uint32_t gs;
33};
34
35struct dbreg {
36  uint32_t dr[8]; /* debug registers */
37                  /* Index 0-3: debug address registers */
38                  /* Index 4-5: reserved */
39                  /* Index 6: debug status */
40                  /* Index 7: debug control */
41};
42
43using FPR_i386 = FXSAVE;
44
45struct UserArea {
46  GPR gpr;
47  FPR_i386 i387;
48};
49
50#define DR_SIZE sizeof(uint32_t)
51#define DR_OFFSET(reg_index) (LLVM_EXTENSION offsetof(dbreg, dr[reg_index]))
52
53// Include RegisterInfos_i386 to declare our g_register_infos_i386 structure.
54#define DECLARE_REGISTER_INFOS_I386_STRUCT
55#include "RegisterInfos_i386.h"
56#undef DECLARE_REGISTER_INFOS_I386_STRUCT
57
58RegisterContextOpenBSD_i386::RegisterContextOpenBSD_i386(
59    const ArchSpec &target_arch)
60    : RegisterInfoInterface(target_arch) {}
61
62size_t RegisterContextOpenBSD_i386::GetGPRSize() const { return sizeof(GPR); }
63
64const RegisterInfo *RegisterContextOpenBSD_i386::GetRegisterInfo() const {
65  switch (GetTargetArchitecture().GetMachine()) {
66  case llvm::Triple::x86:
67    return g_register_infos_i386;
68  default:
69    assert(false && "Unhandled target architecture.");
70    return nullptr;
71  }
72}
73
74uint32_t RegisterContextOpenBSD_i386::GetRegisterCount() const {
75  return static_cast<uint32_t>(sizeof(g_register_infos_i386) /
76                               sizeof(g_register_infos_i386[0]));
77}
78