165 lines · cpp
1//===-- RegisterContextPOSIX_powerpc.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-exception6//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_powerpc.h"24 25using namespace lldb_private;26using namespace lldb;27 28static const uint32_t g_gpr_regnums[] = {29 gpr_r0_powerpc, gpr_r1_powerpc, gpr_r2_powerpc, gpr_r3_powerpc,30 gpr_r4_powerpc, gpr_r5_powerpc, gpr_r6_powerpc, gpr_r7_powerpc,31 gpr_r8_powerpc, gpr_r9_powerpc, gpr_r10_powerpc, gpr_r11_powerpc,32 gpr_r12_powerpc, gpr_r13_powerpc, gpr_r14_powerpc, gpr_r15_powerpc,33 gpr_r16_powerpc, gpr_r17_powerpc, gpr_r18_powerpc, gpr_r19_powerpc,34 gpr_r20_powerpc, gpr_r21_powerpc, gpr_r22_powerpc, gpr_r23_powerpc,35 gpr_r24_powerpc, gpr_r25_powerpc, gpr_r26_powerpc, gpr_r27_powerpc,36 gpr_r28_powerpc, gpr_r29_powerpc, gpr_r30_powerpc, gpr_r31_powerpc,37 gpr_lr_powerpc, gpr_cr_powerpc, gpr_xer_powerpc, gpr_ctr_powerpc,38 gpr_pc_powerpc,39};40 41static const uint32_t g_fpr_regnums[] = {42 fpr_f0_powerpc, fpr_f1_powerpc, fpr_f2_powerpc, fpr_f3_powerpc,43 fpr_f4_powerpc, fpr_f5_powerpc, fpr_f6_powerpc, fpr_f7_powerpc,44 fpr_f8_powerpc, fpr_f9_powerpc, fpr_f10_powerpc, fpr_f11_powerpc,45 fpr_f12_powerpc, fpr_f13_powerpc, fpr_f14_powerpc, fpr_f15_powerpc,46 fpr_f16_powerpc, fpr_f17_powerpc, fpr_f18_powerpc, fpr_f19_powerpc,47 fpr_f20_powerpc, fpr_f21_powerpc, fpr_f22_powerpc, fpr_f23_powerpc,48 fpr_f24_powerpc, fpr_f25_powerpc, fpr_f26_powerpc, fpr_f27_powerpc,49 fpr_f28_powerpc, fpr_f29_powerpc, fpr_f30_powerpc, fpr_f31_powerpc,50 fpr_fpscr_powerpc,51};52 53static const uint32_t g_vmx_regnums[] = {54 vmx_v0_powerpc, vmx_v1_powerpc, vmx_v2_powerpc, vmx_v3_powerpc,55 vmx_v4_powerpc, vmx_v5_powerpc, vmx_v6_powerpc, vmx_v7_powerpc,56 vmx_v8_powerpc, vmx_v9_powerpc, vmx_v10_powerpc, vmx_v11_powerpc,57 vmx_v12_powerpc, vmx_v13_powerpc, vmx_v14_powerpc, vmx_v15_powerpc,58 vmx_v16_powerpc, vmx_v17_powerpc, vmx_v18_powerpc, vmx_v19_powerpc,59 vmx_v20_powerpc, vmx_v21_powerpc, vmx_v22_powerpc, vmx_v23_powerpc,60 vmx_v24_powerpc, vmx_v25_powerpc, vmx_v26_powerpc, vmx_v27_powerpc,61 vmx_v28_powerpc, vmx_v29_powerpc, vmx_v30_powerpc, vmx_v31_powerpc,62 vmx_vrsave_powerpc, vmx_vscr_powerpc,63};64 65// Number of register sets provided by this context.66enum { k_num_register_sets = 3 };67 68static const RegisterSet g_reg_sets_powerpc[k_num_register_sets] = {69 {"General Purpose Registers", "gpr", k_num_gpr_registers_powerpc,70 g_gpr_regnums},71 {"Floating Point Registers", "fpr", k_num_fpr_registers_powerpc,72 g_fpr_regnums},73 {"Altivec/VMX Registers", "vmx", k_num_vmx_registers_powerpc,74 g_vmx_regnums},75};76 77static_assert(k_first_gpr_powerpc == 0,78 "GPRs must index starting at 0, or fix IsGPR()");79bool RegisterContextPOSIX_powerpc::IsGPR(unsigned reg) {80 return (reg <= k_last_gpr_powerpc); // GPR's come first.81}82 83bool RegisterContextPOSIX_powerpc::IsFPR(unsigned reg) {84 return (reg >= k_first_fpr) && (reg <= k_last_fpr);85}86 87bool RegisterContextPOSIX_powerpc::IsVMX(unsigned reg) {88 return (reg >= k_first_vmx) && (reg <= k_last_vmx);89}90 91RegisterContextPOSIX_powerpc::RegisterContextPOSIX_powerpc(92 Thread &thread, uint32_t concrete_frame_idx,93 RegisterInfoInterface *register_info)94 : RegisterContext(thread, concrete_frame_idx) {95 m_register_info_up.reset(register_info);96}97 98RegisterContextPOSIX_powerpc::~RegisterContextPOSIX_powerpc() = default;99 100void RegisterContextPOSIX_powerpc::Invalidate() {}101 102void RegisterContextPOSIX_powerpc::InvalidateAllRegisters() {}103 104unsigned RegisterContextPOSIX_powerpc::GetRegisterOffset(unsigned reg) {105 assert(reg < k_num_registers_powerpc && "Invalid register number.");106 return GetRegisterInfo()[reg].byte_offset;107}108 109unsigned RegisterContextPOSIX_powerpc::GetRegisterSize(unsigned reg) {110 assert(reg < k_num_registers_powerpc && "Invalid register number.");111 return GetRegisterInfo()[reg].byte_size;112}113 114size_t RegisterContextPOSIX_powerpc::GetRegisterCount() {115 size_t num_registers = k_num_registers_powerpc;116 return num_registers;117}118 119size_t RegisterContextPOSIX_powerpc::GetGPRSize() {120 return m_register_info_up->GetGPRSize();121}122 123const RegisterInfo *RegisterContextPOSIX_powerpc::GetRegisterInfo() {124 // Commonly, this method is overridden and g_register_infos is copied and125 // specialized. So, use GetRegisterInfo() rather than g_register_infos in126 // this scope.127 return m_register_info_up->GetRegisterInfo();128}129 130const RegisterInfo *131RegisterContextPOSIX_powerpc::GetRegisterInfoAtIndex(size_t reg) {132 if (reg < k_num_registers_powerpc)133 return &GetRegisterInfo()[reg];134 else135 return nullptr;136}137 138size_t RegisterContextPOSIX_powerpc::GetRegisterSetCount() {139 size_t sets = 0;140 for (size_t set = 0; set < k_num_register_sets; ++set) {141 if (IsRegisterSetAvailable(set))142 ++sets;143 }144 145 return sets;146}147 148const RegisterSet *RegisterContextPOSIX_powerpc::GetRegisterSet(size_t set) {149 if (IsRegisterSetAvailable(set))150 return &g_reg_sets_powerpc[set];151 else152 return nullptr;153}154 155const char *RegisterContextPOSIX_powerpc::GetRegisterName(unsigned reg) {156 assert(reg < k_num_registers_powerpc && "Invalid register offset.");157 return GetRegisterInfo()[reg].name;158}159 160bool RegisterContextPOSIX_powerpc::IsRegisterSetAvailable(size_t set_index) {161 size_t num_sets = k_num_register_sets;162 163 return (set_index < num_sets);164}165