1//===-- RegisterContextOpenBSD_x86_64.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_x86_64.h"
10#include "RegisterContextPOSIX_x86.h"
11#include <vector>
12
13using namespace lldb_private;
14using namespace lldb;
15
16// /usr/include/machine/reg.h
17typedef struct _GPR {
18  uint64_t rdi;
19  uint64_t rsi;
20  uint64_t rdx;
21  uint64_t rcx;
22  uint64_t r8;
23  uint64_t r9;
24  uint64_t r10;
25  uint64_t r11;
26  uint64_t r12;
27  uint64_t r13;
28  uint64_t r14;
29  uint64_t r15;
30  uint64_t rbp;
31  uint64_t rbx;
32  uint64_t rax;
33  uint64_t rsp;
34  uint64_t rip;
35  uint64_t rflags;
36  uint64_t cs;
37  uint64_t ss;
38  uint64_t ds;
39  uint64_t es;
40  uint64_t fs;
41  uint64_t gs;
42} GPR;
43
44struct DBG {
45  uint64_t dr[16]; /* debug registers */
46                   /* Index 0-3: debug address registers */
47                   /* Index 4-5: reserved */
48                   /* Index 6: debug status */
49                   /* Index 7: debug control */
50                   /* Index 8-15: reserved */
51};
52
53struct UserArea {
54  GPR gpr;
55  FPR fpr;
56  DBG dbg;
57};
58
59#define DR_OFFSET(reg_index) (LLVM_EXTENSION offsetof(DBG, dr[reg_index]))
60
61// Include RegisterInfos_x86_64 to declare our g_register_infos_x86_64
62// structure.
63#define DECLARE_REGISTER_INFOS_X86_64_STRUCT
64#include "RegisterInfos_x86_64.h"
65#undef DECLARE_REGISTER_INFOS_X86_64_STRUCT
66
67static const RegisterInfo *
68PrivateGetRegisterInfoPtr(const lldb_private::ArchSpec &target_arch) {
69  switch (target_arch.GetMachine()) {
70  case llvm::Triple::x86_64:
71    return g_register_infos_x86_64;
72  default:
73    assert(false && "Unhandled target architecture.");
74    return nullptr;
75  }
76}
77
78static uint32_t
79PrivateGetRegisterCount(const lldb_private::ArchSpec &target_arch) {
80  switch (target_arch.GetMachine()) {
81  case llvm::Triple::x86_64:
82    return static_cast<uint32_t>(sizeof(g_register_infos_x86_64) /
83                                 sizeof(g_register_infos_x86_64[0]));
84  default:
85    assert(false && "Unhandled target architecture.");
86    return 0;
87  }
88}
89
90RegisterContextOpenBSD_x86_64::RegisterContextOpenBSD_x86_64(
91    const ArchSpec &target_arch)
92    : lldb_private::RegisterInfoInterface(target_arch),
93      m_register_info_p(PrivateGetRegisterInfoPtr(target_arch)),
94      m_register_count(PrivateGetRegisterCount(target_arch)) {}
95
96size_t RegisterContextOpenBSD_x86_64::GetGPRSize() const { return sizeof(GPR); }
97
98const RegisterInfo *RegisterContextOpenBSD_x86_64::GetRegisterInfo() const {
99  return m_register_info_p;
100}
101
102uint32_t RegisterContextOpenBSD_x86_64::GetRegisterCount() const {
103  return m_register_count;
104}
105