1 //===-- RegisterContextPOSIX_powerpc.cpp -------------------------*- C++
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
8 //===----------------------------------------------------------------------===//
14 #include "lldb/Target/Process.h"
15 #include "lldb/Target/Target.h"
16 #include "lldb/Target/Thread.h"
17 #include "lldb/Utility/DataBufferHeap.h"
18 #include "lldb/Utility/DataExtractor.h"
19 #include "lldb/Utility/Endian.h"
20 #include "lldb/Utility/RegisterValue.h"
21 #include "lldb/Utility/Scalar.h"
22 #include "llvm/Support/Compiler.h"
24 #include "RegisterContextPOSIX_powerpc.h"
26 using namespace lldb_private;
29 static const uint32_t g_gpr_regnums[] = {
30 gpr_r0_powerpc, gpr_r1_powerpc, gpr_r2_powerpc, gpr_r3_powerpc,
31 gpr_r4_powerpc, gpr_r5_powerpc, gpr_r6_powerpc, gpr_r7_powerpc,
32 gpr_r8_powerpc, gpr_r9_powerpc, gpr_r10_powerpc, gpr_r11_powerpc,
33 gpr_r12_powerpc, gpr_r13_powerpc, gpr_r14_powerpc, gpr_r15_powerpc,
34 gpr_r16_powerpc, gpr_r17_powerpc, gpr_r18_powerpc, gpr_r19_powerpc,
35 gpr_r20_powerpc, gpr_r21_powerpc, gpr_r22_powerpc, gpr_r23_powerpc,
36 gpr_r24_powerpc, gpr_r25_powerpc, gpr_r26_powerpc, gpr_r27_powerpc,
37 gpr_r28_powerpc, gpr_r29_powerpc, gpr_r30_powerpc, gpr_r31_powerpc,
38 gpr_lr_powerpc, gpr_cr_powerpc, gpr_xer_powerpc, gpr_ctr_powerpc,
42 static const uint32_t g_fpr_regnums[] = {
43 fpr_f0_powerpc, fpr_f1_powerpc, fpr_f2_powerpc, fpr_f3_powerpc,
44 fpr_f4_powerpc, fpr_f5_powerpc, fpr_f6_powerpc, fpr_f7_powerpc,
45 fpr_f8_powerpc, fpr_f9_powerpc, fpr_f10_powerpc, fpr_f11_powerpc,
46 fpr_f12_powerpc, fpr_f13_powerpc, fpr_f14_powerpc, fpr_f15_powerpc,
47 fpr_f16_powerpc, fpr_f17_powerpc, fpr_f18_powerpc, fpr_f19_powerpc,
48 fpr_f20_powerpc, fpr_f21_powerpc, fpr_f22_powerpc, fpr_f23_powerpc,
49 fpr_f24_powerpc, fpr_f25_powerpc, fpr_f26_powerpc, fpr_f27_powerpc,
50 fpr_f28_powerpc, fpr_f29_powerpc, fpr_f30_powerpc, fpr_f31_powerpc,
54 static const uint32_t g_vmx_regnums[] = {
55 vmx_v0_powerpc, vmx_v1_powerpc, vmx_v2_powerpc, vmx_v3_powerpc,
56 vmx_v4_powerpc, vmx_v5_powerpc, vmx_v6_powerpc, vmx_v7_powerpc,
57 vmx_v8_powerpc, vmx_v9_powerpc, vmx_v10_powerpc, vmx_v11_powerpc,
58 vmx_v12_powerpc, vmx_v13_powerpc, vmx_v14_powerpc, vmx_v15_powerpc,
59 vmx_v16_powerpc, vmx_v17_powerpc, vmx_v18_powerpc, vmx_v19_powerpc,
60 vmx_v20_powerpc, vmx_v21_powerpc, vmx_v22_powerpc, vmx_v23_powerpc,
61 vmx_v24_powerpc, vmx_v25_powerpc, vmx_v26_powerpc, vmx_v27_powerpc,
62 vmx_v28_powerpc, vmx_v29_powerpc, vmx_v30_powerpc, vmx_v31_powerpc,
63 vmx_vrsave_powerpc, vmx_vscr_powerpc,
66 // Number of register sets provided by this context.
67 enum { k_num_register_sets = 3 };
69 static const RegisterSet g_reg_sets_powerpc[k_num_register_sets] = {
70 {"General Purpose Registers", "gpr", k_num_gpr_registers_powerpc,
72 {"Floating Point Registers", "fpr", k_num_fpr_registers_powerpc,
74 {"Altivec/VMX Registers", "vmx", k_num_vmx_registers_powerpc,
78 static_assert(k_first_gpr_powerpc == 0,
79 "GPRs must index starting at 0, or fix IsGPR()");
80 bool RegisterContextPOSIX_powerpc::IsGPR(unsigned reg) {
81 return (reg <= k_last_gpr_powerpc); // GPR's come first.
84 bool RegisterContextPOSIX_powerpc::IsFPR(unsigned reg) {
85 return (reg >= k_first_fpr) && (reg <= k_last_fpr);
88 bool RegisterContextPOSIX_powerpc::IsVMX(unsigned reg) {
89 return (reg >= k_first_vmx) && (reg <= k_last_vmx);
92 RegisterContextPOSIX_powerpc::RegisterContextPOSIX_powerpc(
93 Thread &thread, uint32_t concrete_frame_idx,
94 RegisterInfoInterface *register_info)
95 : RegisterContext(thread, concrete_frame_idx) {
96 m_register_info_up.reset(register_info);
99 RegisterContextPOSIX_powerpc::~RegisterContextPOSIX_powerpc() {}
101 void RegisterContextPOSIX_powerpc::Invalidate() {}
103 void RegisterContextPOSIX_powerpc::InvalidateAllRegisters() {}
105 unsigned RegisterContextPOSIX_powerpc::GetRegisterOffset(unsigned reg) {
106 assert(reg < k_num_registers_powerpc && "Invalid register number.");
107 return GetRegisterInfo()[reg].byte_offset;
110 unsigned RegisterContextPOSIX_powerpc::GetRegisterSize(unsigned reg) {
111 assert(reg < k_num_registers_powerpc && "Invalid register number.");
112 return GetRegisterInfo()[reg].byte_size;
115 size_t RegisterContextPOSIX_powerpc::GetRegisterCount() {
116 size_t num_registers = k_num_registers_powerpc;
117 return num_registers;
120 size_t RegisterContextPOSIX_powerpc::GetGPRSize() {
121 return m_register_info_up->GetGPRSize();
124 const RegisterInfo *RegisterContextPOSIX_powerpc::GetRegisterInfo() {
125 // Commonly, this method is overridden and g_register_infos is copied and
126 // specialized. So, use GetRegisterInfo() rather than g_register_infos in
128 return m_register_info_up->GetRegisterInfo();
132 RegisterContextPOSIX_powerpc::GetRegisterInfoAtIndex(size_t reg) {
133 if (reg < k_num_registers_powerpc)
134 return &GetRegisterInfo()[reg];
139 size_t RegisterContextPOSIX_powerpc::GetRegisterSetCount() {
141 for (size_t set = 0; set < k_num_register_sets; ++set) {
142 if (IsRegisterSetAvailable(set))
149 const RegisterSet *RegisterContextPOSIX_powerpc::GetRegisterSet(size_t set) {
150 if (IsRegisterSetAvailable(set))
151 return &g_reg_sets_powerpc[set];
156 const char *RegisterContextPOSIX_powerpc::GetRegisterName(unsigned reg) {
157 assert(reg < k_num_registers_powerpc && "Invalid register offset.");
158 return GetRegisterInfo()[reg].name;
161 lldb::ByteOrder RegisterContextPOSIX_powerpc::GetByteOrder() {
162 // Get the target process whose privileged thread was used for the register
164 lldb::ByteOrder byte_order = eByteOrderInvalid;
165 Process *process = CalculateProcess().get();
168 byte_order = process->GetByteOrder();
172 bool RegisterContextPOSIX_powerpc::IsRegisterSetAvailable(size_t set_index) {
173 size_t num_sets = k_num_register_sets;
175 return (set_index < num_sets);
178 // Used when parsing DWARF and EH frame information and any other object file
179 // sections that contain register numbers in them.
180 uint32_t RegisterContextPOSIX_powerpc::ConvertRegisterKindToRegisterNumber(
181 lldb::RegisterKind kind, uint32_t num) {
182 const uint32_t num_regs = GetRegisterCount();
184 assert(kind < kNumRegisterKinds);
185 for (uint32_t reg_idx = 0; reg_idx < num_regs; ++reg_idx) {
186 const RegisterInfo *reg_info = GetRegisterInfoAtIndex(reg_idx);
188 if (reg_info->kinds[kind] == num)
192 return LLDB_INVALID_REGNUM;