1//===-- RegisterContextPOSIX_mips64.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 <cerrno>
10#include <cstdint>
11#include <cstring>
12
13#include "lldb/Target/Process.h"
14#include "lldb/Target/Target.h"
15#include "lldb/Target/Thread.h"
16#include "lldb/Utility/DataBufferHeap.h"
17#include "lldb/Utility/DataExtractor.h"
18#include "lldb/Utility/Endian.h"
19#include "lldb/Utility/RegisterValue.h"
20#include "lldb/Utility/Scalar.h"
21#include "llvm/Support/Compiler.h"
22
23#include "RegisterContextPOSIX_mips64.h"
24#include "RegisterContextFreeBSD_mips64.h"
25
26using namespace lldb_private;
27using namespace lldb;
28
29bool RegisterContextPOSIX_mips64::IsGPR(unsigned reg) {
30 return reg < m_registers_count[gpr_registers_count]; // GPR's come first.
31}
32
33bool RegisterContextPOSIX_mips64::IsFPR(unsigned reg) {
34 int set = GetRegisterSetCount();
35 if (set > 1)
36 return reg < (m_registers_count[fpr_registers_count]
37 + m_registers_count[gpr_registers_count]);
38 return false;
39}
40
41RegisterContextPOSIX_mips64::RegisterContextPOSIX_mips64(
42 Thread &thread, uint32_t concrete_frame_idx,
43 RegisterInfoInterface *register_info)
44 : RegisterContext(thread, concrete_frame_idx) {
45 m_register_info_up.reset(p: register_info);
46 m_num_registers = GetRegisterCount();
47 int set = GetRegisterSetCount();
48
49 const RegisterSet *reg_set_ptr;
50 for(int i = 0; i < set; ++i) {
51 reg_set_ptr = GetRegisterSet(set: i);
52 m_registers_count[i] = reg_set_ptr->num_registers;
53 }
54
55 assert(m_num_registers ==
56 static_cast<uint32_t>(m_registers_count[gpr_registers_count] +
57 m_registers_count[fpr_registers_count] +
58 m_registers_count[msa_registers_count]));
59}
60
61RegisterContextPOSIX_mips64::~RegisterContextPOSIX_mips64() = default;
62
63void RegisterContextPOSIX_mips64::Invalidate() {}
64
65void RegisterContextPOSIX_mips64::InvalidateAllRegisters() {}
66
67unsigned RegisterContextPOSIX_mips64::GetRegisterOffset(unsigned reg) {
68 assert(reg < m_num_registers && "Invalid register number.");
69 return GetRegisterInfo()[reg].byte_offset;
70}
71
72unsigned RegisterContextPOSIX_mips64::GetRegisterSize(unsigned reg) {
73 assert(reg < m_num_registers && "Invalid register number.");
74 return GetRegisterInfo()[reg].byte_size;
75}
76
77size_t RegisterContextPOSIX_mips64::GetRegisterCount() {
78 return m_register_info_up->GetRegisterCount();
79}
80
81size_t RegisterContextPOSIX_mips64::GetGPRSize() {
82 return m_register_info_up->GetGPRSize();
83}
84
85const RegisterInfo *RegisterContextPOSIX_mips64::GetRegisterInfo() {
86 // Commonly, this method is overridden and g_register_infos is copied and
87 // specialized. So, use GetRegisterInfo() rather than g_register_infos in
88 // this scope.
89 return m_register_info_up->GetRegisterInfo();
90}
91
92const RegisterInfo *
93RegisterContextPOSIX_mips64::GetRegisterInfoAtIndex(size_t reg) {
94 if (reg < m_num_registers)
95 return &GetRegisterInfo()[reg];
96 else
97 return nullptr;
98}
99
100size_t RegisterContextPOSIX_mips64::GetRegisterSetCount() {
101 const auto *context = static_cast<const RegisterContextFreeBSD_mips64 *>(
102 m_register_info_up.get());
103 return context->GetRegisterSetCount();
104}
105
106const RegisterSet *RegisterContextPOSIX_mips64::GetRegisterSet(size_t set) {
107 const auto *context = static_cast<const RegisterContextFreeBSD_mips64 *>(
108 m_register_info_up.get());
109 return context->GetRegisterSet(set);
110}
111
112const char *RegisterContextPOSIX_mips64::GetRegisterName(unsigned reg) {
113 assert(reg < m_num_registers && "Invalid register offset.");
114 return GetRegisterInfo()[reg].name;
115}
116
117bool RegisterContextPOSIX_mips64::IsRegisterSetAvailable(size_t set_index) {
118 size_t num_sets = GetRegisterSetCount();
119
120 return (set_index < num_sets);
121}
122
123// Used when parsing DWARF and EH frame information and any other object file
124// sections that contain register numbers in them.
125uint32_t RegisterContextPOSIX_mips64::ConvertRegisterKindToRegisterNumber(
126 lldb::RegisterKind kind, uint32_t num) {
127 const uint32_t num_regs = m_num_registers;
128
129 assert(kind < kNumRegisterKinds);
130 for (uint32_t reg_idx = 0; reg_idx < num_regs; ++reg_idx) {
131 const RegisterInfo *reg_info = GetRegisterInfoAtIndex(reg: reg_idx);
132
133 if (reg_info->kinds[kind] == num)
134 return reg_idx;
135 }
136
137 return LLDB_INVALID_REGNUM;
138}
139

source code of lldb/source/Plugins/Process/Utility/RegisterContextPOSIX_mips64.cpp