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RegisterContextOpenBSD_x86_64.cpp
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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
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;
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
65#undef DECLARE_REGISTER_INFOS_X86_64_STRUCT
66
67static const RegisterInfo *
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
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
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
99 return m_register_info_p;
100}
101
103 return m_register_count;
104}
static const RegisterInfo * PrivateGetRegisterInfoPtr(const lldb_private::ArchSpec &target_arch)
struct _GPR GPR
static uint32_t PrivateGetRegisterCount(const lldb_private::ArchSpec &target_arch)
RegisterContextOpenBSD_x86_64(const lldb_private::ArchSpec &target_arch)
const lldb_private::RegisterInfo * GetRegisterInfo() const override
const lldb_private::RegisterInfo * m_register_info_p
An architecture specification class.
Definition: ArchSpec.h:32
llvm::Triple::ArchType GetMachine() const
Returns a machine family for the current architecture.
Definition: ArchSpec.cpp:678
RegisterInfo interface to patch RegisterInfo structure for archs.
A class that represents a running process on the host machine.
Definition: SBAddress.h:15
GPR_linux_mips gpr
FPR_linux_mips fpr