139 lines · cpp
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-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_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(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(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 and87 // specialized. So, use GetRegisterInfo() rather than g_register_infos in88 // 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 else97 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 file124// 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_idx);132 133 if (reg_info->kinds[kind] == num)134 return reg_idx;135 }136 137 return LLDB_INVALID_REGNUM;138}139