1//===-- RegisterContextPOSIX_ppc64le.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_ppc64le.h"
24
25using namespace lldb_private;
26using namespace lldb;
27
28static const uint32_t g_gpr_regnums[] = {
29 gpr_r0_ppc64le, gpr_r1_ppc64le, gpr_r2_ppc64le, gpr_r3_ppc64le,
30 gpr_r4_ppc64le, gpr_r5_ppc64le, gpr_r6_ppc64le, gpr_r7_ppc64le,
31 gpr_r8_ppc64le, gpr_r9_ppc64le, gpr_r10_ppc64le, gpr_r11_ppc64le,
32 gpr_r12_ppc64le, gpr_r13_ppc64le, gpr_r14_ppc64le, gpr_r15_ppc64le,
33 gpr_r16_ppc64le, gpr_r17_ppc64le, gpr_r18_ppc64le, gpr_r19_ppc64le,
34 gpr_r20_ppc64le, gpr_r21_ppc64le, gpr_r22_ppc64le, gpr_r23_ppc64le,
35 gpr_r24_ppc64le, gpr_r25_ppc64le, gpr_r26_ppc64le, gpr_r27_ppc64le,
36 gpr_r28_ppc64le, gpr_r29_ppc64le, gpr_r30_ppc64le, gpr_r31_ppc64le,
37 gpr_pc_ppc64le, gpr_msr_ppc64le, gpr_origr3_ppc64le, gpr_ctr_ppc64le,
38 gpr_lr_ppc64le, gpr_xer_ppc64le, gpr_cr_ppc64le, gpr_softe_ppc64le,
39 gpr_trap_ppc64le,
40};
41
42static const uint32_t g_fpr_regnums[] = {
43 fpr_f0_ppc64le, fpr_f1_ppc64le, fpr_f2_ppc64le, fpr_f3_ppc64le,
44 fpr_f4_ppc64le, fpr_f5_ppc64le, fpr_f6_ppc64le, fpr_f7_ppc64le,
45 fpr_f8_ppc64le, fpr_f9_ppc64le, fpr_f10_ppc64le, fpr_f11_ppc64le,
46 fpr_f12_ppc64le, fpr_f13_ppc64le, fpr_f14_ppc64le, fpr_f15_ppc64le,
47 fpr_f16_ppc64le, fpr_f17_ppc64le, fpr_f18_ppc64le, fpr_f19_ppc64le,
48 fpr_f20_ppc64le, fpr_f21_ppc64le, fpr_f22_ppc64le, fpr_f23_ppc64le,
49 fpr_f24_ppc64le, fpr_f25_ppc64le, fpr_f26_ppc64le, fpr_f27_ppc64le,
50 fpr_f28_ppc64le, fpr_f29_ppc64le, fpr_f30_ppc64le, fpr_f31_ppc64le,
51 fpr_fpscr_ppc64le,
52};
53
54static const uint32_t g_vmx_regnums[] = {
55 vmx_vr0_ppc64le, vmx_vr1_ppc64le, vmx_vr2_ppc64le, vmx_vr3_ppc64le,
56 vmx_vr4_ppc64le, vmx_vr5_ppc64le, vmx_vr6_ppc64le, vmx_vr7_ppc64le,
57 vmx_vr8_ppc64le, vmx_vr9_ppc64le, vmx_vr10_ppc64le, vmx_vr11_ppc64le,
58 vmx_vr12_ppc64le, vmx_vr13_ppc64le, vmx_vr14_ppc64le, vmx_vr15_ppc64le,
59 vmx_vr16_ppc64le, vmx_vr17_ppc64le, vmx_vr18_ppc64le, vmx_vr19_ppc64le,
60 vmx_vr20_ppc64le, vmx_vr21_ppc64le, vmx_vr22_ppc64le, vmx_vr23_ppc64le,
61 vmx_vr24_ppc64le, vmx_vr25_ppc64le, vmx_vr26_ppc64le, vmx_vr27_ppc64le,
62 vmx_vr28_ppc64le, vmx_vr29_ppc64le, vmx_vr30_ppc64le, vmx_vr31_ppc64le,
63 vmx_vscr_ppc64le, vmx_vrsave_ppc64le,
64};
65
66static const uint32_t g_vsx_regnums[] = {
67 vsx_vs0_ppc64le, vsx_vs1_ppc64le, vsx_vs2_ppc64le, vsx_vs3_ppc64le,
68 vsx_vs4_ppc64le, vsx_vs5_ppc64le, vsx_vs6_ppc64le, vsx_vs7_ppc64le,
69 vsx_vs8_ppc64le, vsx_vs9_ppc64le, vsx_vs10_ppc64le, vsx_vs11_ppc64le,
70 vsx_vs12_ppc64le, vsx_vs13_ppc64le, vsx_vs14_ppc64le, vsx_vs15_ppc64le,
71 vsx_vs16_ppc64le, vsx_vs17_ppc64le, vsx_vs18_ppc64le, vsx_vs19_ppc64le,
72 vsx_vs20_ppc64le, vsx_vs21_ppc64le, vsx_vs22_ppc64le, vsx_vs23_ppc64le,
73 vsx_vs24_ppc64le, vsx_vs25_ppc64le, vsx_vs26_ppc64le, vsx_vs27_ppc64le,
74 vsx_vs28_ppc64le, vsx_vs29_ppc64le, vsx_vs30_ppc64le, vsx_vs31_ppc64le,
75 vsx_vs32_ppc64le, vsx_vs33_ppc64le, vsx_vs34_ppc64le, vsx_vs35_ppc64le,
76 vsx_vs36_ppc64le, vsx_vs37_ppc64le, vsx_vs38_ppc64le, vsx_vs39_ppc64le,
77 vsx_vs40_ppc64le, vsx_vs41_ppc64le, vsx_vs42_ppc64le, vsx_vs43_ppc64le,
78 vsx_vs44_ppc64le, vsx_vs45_ppc64le, vsx_vs46_ppc64le, vsx_vs47_ppc64le,
79 vsx_vs48_ppc64le, vsx_vs49_ppc64le, vsx_vs50_ppc64le, vsx_vs51_ppc64le,
80 vsx_vs52_ppc64le, vsx_vs53_ppc64le, vsx_vs54_ppc64le, vsx_vs55_ppc64le,
81 vsx_vs56_ppc64le, vsx_vs57_ppc64le, vsx_vs58_ppc64le, vsx_vs59_ppc64le,
82 vsx_vs60_ppc64le, vsx_vs61_ppc64le, vsx_vs62_ppc64le, vsx_vs63_ppc64le,
83};
84
85// Number of register sets provided by this context.
86enum { k_num_register_sets = 4 };
87
88static const RegisterSet g_reg_sets_ppc64le[k_num_register_sets] = {
89 {.name: "General Purpose Registers", .short_name: "gpr", .num_registers: k_num_gpr_registers_ppc64le,
90 .registers: g_gpr_regnums},
91 {.name: "Floating Point Registers", .short_name: "fpr", .num_registers: k_num_fpr_registers_ppc64le,
92 .registers: g_fpr_regnums},
93 {.name: "Altivec/VMX Registers", .short_name: "vmx", .num_registers: k_num_vmx_registers_ppc64le,
94 .registers: g_vmx_regnums},
95 {.name: "VSX Registers", .short_name: "vsx", .num_registers: k_num_vsx_registers_ppc64le, .registers: g_vsx_regnums},
96};
97
98bool RegisterContextPOSIX_ppc64le::IsGPR(unsigned reg) {
99 return (reg <= k_last_gpr_ppc64le); // GPR's come first.
100}
101
102bool RegisterContextPOSIX_ppc64le::IsFPR(unsigned reg) {
103 return (reg >= k_first_fpr_ppc64le) && (reg <= k_last_fpr_ppc64le);
104}
105
106bool RegisterContextPOSIX_ppc64le::IsVMX(unsigned reg) {
107 return (reg >= k_first_vmx_ppc64le) && (reg <= k_last_vmx_ppc64le);
108}
109
110bool RegisterContextPOSIX_ppc64le::IsVSX(unsigned reg) {
111 return (reg >= k_first_vsx_ppc64le) && (reg <= k_last_vsx_ppc64le);
112}
113
114RegisterContextPOSIX_ppc64le::RegisterContextPOSIX_ppc64le(
115 Thread &thread, uint32_t concrete_frame_idx,
116 RegisterInfoInterface *register_info)
117 : RegisterContext(thread, concrete_frame_idx) {
118 m_register_info_up.reset(p: register_info);
119}
120
121void RegisterContextPOSIX_ppc64le::InvalidateAllRegisters() {}
122
123unsigned RegisterContextPOSIX_ppc64le::GetRegisterOffset(unsigned reg) {
124 assert(reg < k_num_registers_ppc64le && "Invalid register number.");
125 return GetRegisterInfo()[reg].byte_offset;
126}
127
128unsigned RegisterContextPOSIX_ppc64le::GetRegisterSize(unsigned reg) {
129 assert(reg < k_num_registers_ppc64le && "Invalid register number.");
130 return GetRegisterInfo()[reg].byte_size;
131}
132
133size_t RegisterContextPOSIX_ppc64le::GetRegisterCount() {
134 size_t num_registers = k_num_registers_ppc64le;
135 return num_registers;
136}
137
138size_t RegisterContextPOSIX_ppc64le::GetGPRSize() {
139 return m_register_info_up->GetGPRSize();
140}
141
142const RegisterInfo *RegisterContextPOSIX_ppc64le::GetRegisterInfo() {
143 // Commonly, this method is overridden and g_register_infos is copied and
144 // specialized. So, use GetRegisterInfo() rather than g_register_infos in
145 // this scope.
146 return m_register_info_up->GetRegisterInfo();
147}
148
149const RegisterInfo *
150RegisterContextPOSIX_ppc64le::GetRegisterInfoAtIndex(size_t reg) {
151 if (reg < k_num_registers_ppc64le)
152 return &GetRegisterInfo()[reg];
153 else
154 return nullptr;
155}
156
157size_t RegisterContextPOSIX_ppc64le::GetRegisterSetCount() {
158 size_t sets = 0;
159 for (size_t set = 0; set < k_num_register_sets; ++set) {
160 if (IsRegisterSetAvailable(set_index: set))
161 ++sets;
162 }
163
164 return sets;
165}
166
167const RegisterSet *RegisterContextPOSIX_ppc64le::GetRegisterSet(size_t set) {
168 if (IsRegisterSetAvailable(set_index: set))
169 return &g_reg_sets_ppc64le[set];
170 else
171 return nullptr;
172}
173
174const char *RegisterContextPOSIX_ppc64le::GetRegisterName(unsigned reg) {
175 assert(reg < k_num_registers_ppc64le && "Invalid register offset.");
176 return GetRegisterInfo()[reg].name;
177}
178
179bool RegisterContextPOSIX_ppc64le::IsRegisterSetAvailable(size_t set_index) {
180 size_t num_sets = k_num_register_sets;
181
182 return (set_index < num_sets);
183}
184

source code of lldb/source/Plugins/Process/Utility/RegisterContextPOSIX_ppc64le.cpp