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| 1 | +//===-- ObjectFileAIXCore.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 "ObjectFileAIXCore.h" |
| 10 | + |
| 11 | +#include <algorithm> |
| 12 | +#include <cassert> |
| 13 | +#include <unordered_map> |
| 14 | +#include <string.h> |
| 15 | + |
| 16 | +#include "lldb/Utility/FileSpecList.h" |
| 17 | +#include "lldb/Core/Module.h" |
| 18 | +#include "lldb/Core/ModuleSpec.h" |
| 19 | +#include "lldb/Core/PluginManager.h" |
| 20 | +#include "lldb/Host/FileSystem.h" |
| 21 | +#include "lldb/Symbol/SymbolContext.h" |
| 22 | +#include "lldb/Target/Process.h" |
| 23 | +#include "lldb/Target/Target.h" |
| 24 | +#include "lldb/Utility/ArchSpec.h" |
| 25 | +#include "lldb/Utility/DataBufferHeap.h" |
| 26 | +#include "lldb/Utility/LLDBLog.h" |
| 27 | +#include "lldb/Utility/Log.h" |
| 28 | +#include "lldb/Utility/Stream.h" |
| 29 | +#include "llvm/ADT/StringRef.h" |
| 30 | +#include "llvm/BinaryFormat/XCOFF.h" |
| 31 | +#include "llvm/Support/MemoryBuffer.h" |
| 32 | +#include "llvm/Object/XCOFFObjectFile.h" |
| 33 | + |
| 34 | +using namespace llvm; |
| 35 | +using namespace lldb; |
| 36 | +using namespace lldb_private; |
| 37 | + |
| 38 | +LLDB_PLUGIN_DEFINE(ObjectFileAIXCore) |
| 39 | + |
| 40 | +enum CoreVersion : uint64_t {AIXCORE32 = 0xFEEDDB1, AIXCORE64 = 0xFEEDDB2}; |
| 41 | + |
| 42 | +bool m_is_core = false; |
| 43 | + |
| 44 | +// Static methods. |
| 45 | +void ObjectFileAIXCore::Initialize() { |
| 46 | + PluginManager::RegisterPlugin(GetPluginNameStatic(), |
| 47 | + GetPluginDescriptionStatic(), CreateInstance, |
| 48 | + CreateMemoryInstance, GetModuleSpecifications); |
| 49 | +} |
| 50 | + |
| 51 | +void ObjectFileAIXCore::Terminate() { |
| 52 | + PluginManager::UnregisterPlugin(CreateInstance); |
| 53 | +} |
| 54 | + |
| 55 | +ObjectFile *ObjectFileAIXCore::CreateInstance(const lldb::ModuleSP &module_sp, |
| 56 | + DataBufferSP data_sp, |
| 57 | + lldb::offset_t data_offset, |
| 58 | + const lldb_private::FileSpec *file, |
| 59 | + lldb::offset_t file_offset, |
| 60 | + lldb::offset_t length) { |
| 61 | + |
| 62 | + if(m_is_core) |
| 63 | + { |
| 64 | + |
| 65 | + bool mapped_writable = false; |
| 66 | + if (!data_sp) { |
| 67 | + data_sp = MapFileDataWritable(*file, length, file_offset); |
| 68 | + if (!data_sp) |
| 69 | + return nullptr; |
| 70 | + data_offset = 0; |
| 71 | + mapped_writable = true; |
| 72 | + } |
| 73 | + |
| 74 | + assert(data_sp); |
| 75 | + |
| 76 | + const uint8_t *magic = data_sp->GetBytes() + data_offset; |
| 77 | + |
| 78 | + // Update the data to contain the entire file if it doesn't already |
| 79 | + if (data_sp->GetByteSize() < length) { |
| 80 | + data_sp = MapFileDataWritable(*file, length, file_offset); |
| 81 | + if (!data_sp) |
| 82 | + return nullptr; |
| 83 | + data_offset = 0; |
| 84 | + mapped_writable = true; |
| 85 | + magic = data_sp->GetBytes(); |
| 86 | + } |
| 87 | + |
| 88 | + // If we didn't map the data as writable take ownership of the buffer. |
| 89 | + if (!mapped_writable) { |
| 90 | + data_sp = std::make_shared<DataBufferHeap>(data_sp->GetBytes(), |
| 91 | + data_sp->GetByteSize()); |
| 92 | + data_offset = 0; |
| 93 | + magic = data_sp->GetBytes(); |
| 94 | + } |
| 95 | + |
| 96 | + std::unique_ptr<ObjectFileAIXCore> objfile_up(new ObjectFileAIXCore( |
| 97 | + module_sp, data_sp, data_offset, file, file_offset, length)); |
| 98 | + ArchSpec spec = objfile_up->GetArchitecture(); |
| 99 | + objfile_up->SetModulesArchitecture(spec); |
| 100 | + return objfile_up.release(); |
| 101 | + |
| 102 | + } |
| 103 | +} |
| 104 | + |
| 105 | +ObjectFile *ObjectFileAIXCore::CreateMemoryInstance( |
| 106 | + const lldb::ModuleSP &module_sp, WritableDataBufferSP data_sp, |
| 107 | + const lldb::ProcessSP &process_sp, lldb::addr_t header_addr) { |
| 108 | + return nullptr; |
| 109 | +} |
| 110 | + |
| 111 | +size_t ObjectFileAIXCore::GetModuleSpecifications( |
| 112 | + const lldb_private::FileSpec &file, lldb::DataBufferSP &data_sp, |
| 113 | + lldb::offset_t data_offset, lldb::offset_t file_offset, |
| 114 | + lldb::offset_t length, lldb_private::ModuleSpecList &specs) { |
| 115 | + const size_t initial_count = specs.GetSize(); |
| 116 | + |
| 117 | + if (ObjectFileAIXCore::MagicBytesMatch(data_sp, 0, data_sp->GetByteSize())) { |
| 118 | + // Need new ArchType??? |
| 119 | + ArchSpec arch_spec = ArchSpec(eArchTypeXCOFF, XCOFF::TCPU_PPC64, LLDB_INVALID_CPUTYPE); |
| 120 | + ModuleSpec spec(file, arch_spec); |
| 121 | + spec.GetArchitecture().SetArchitecture(eArchTypeXCOFF, XCOFF::TCPU_PPC64, LLDB_INVALID_CPUTYPE, llvm::Triple::AIX); |
| 122 | + specs.Append(spec); |
| 123 | + } |
| 124 | + return specs.GetSize() - initial_count; |
| 125 | +} |
| 126 | + |
| 127 | +static uint32_t AIXCoreHeaderCheckFromMagic(uint32_t magic) { |
| 128 | + |
| 129 | + Log *log = GetLog(LLDBLog::Modules); |
| 130 | + switch (magic) { |
| 131 | + case AIXCORE32: |
| 132 | + LLDB_LOGF(log, "ObjectFileAIXCore: 32-bit not supported"); |
| 133 | + break; |
| 134 | + case AIXCORE64: |
| 135 | + m_is_core = true; |
| 136 | + return 1; |
| 137 | + break; |
| 138 | + } |
| 139 | + return 0; |
| 140 | +} |
| 141 | + |
| 142 | +bool ObjectFileAIXCore::MagicBytesMatch(DataBufferSP &data_sp, |
| 143 | + lldb::addr_t data_offset, |
| 144 | + lldb::addr_t data_length) { |
| 145 | + lldb_private::DataExtractor data; |
| 146 | + data.SetData(data_sp, data_offset, data_length); |
| 147 | + lldb::offset_t offset = 0; |
| 148 | + offset += 4; // Skipping to the coredump version |
| 149 | + uint32_t magic = data.GetU32(&offset); |
| 150 | + return AIXCoreHeaderCheckFromMagic(magic) != 0; |
| 151 | +} |
| 152 | + |
| 153 | +bool ObjectFileAIXCore::ParseHeader() { |
| 154 | + |
| 155 | + return false; |
| 156 | +} |
| 157 | + |
| 158 | +ByteOrder ObjectFileAIXCore::GetByteOrder() const { |
| 159 | + return eByteOrderBig; |
| 160 | +} |
| 161 | + |
| 162 | +bool ObjectFileAIXCore::IsExecutable() const { |
| 163 | + return false; |
| 164 | +} |
| 165 | + |
| 166 | +uint32_t ObjectFileAIXCore::GetAddressByteSize() const { |
| 167 | + return 8; |
| 168 | +} |
| 169 | + |
| 170 | +AddressClass ObjectFileAIXCore::GetAddressClass(addr_t file_addr) { |
| 171 | + return AddressClass::eUnknown; |
| 172 | +} |
| 173 | + |
| 174 | +lldb::SymbolType ObjectFileAIXCore::MapSymbolType(llvm::object::SymbolRef::Type sym_type) { |
| 175 | + if (sym_type == llvm::object::SymbolRef::ST_Function) |
| 176 | + return lldb::eSymbolTypeCode; |
| 177 | + else if (sym_type == llvm::object::SymbolRef::ST_Data) |
| 178 | + return lldb::eSymbolTypeData; |
| 179 | + return lldb::eSymbolTypeInvalid; |
| 180 | +} |
| 181 | + |
| 182 | +void ObjectFileAIXCore::ParseSymtab(Symtab &lldb_symtab) { |
| 183 | +} |
| 184 | + |
| 185 | +bool ObjectFileAIXCore::IsStripped() { |
| 186 | + return false; |
| 187 | +} |
| 188 | + |
| 189 | +void ObjectFileAIXCore::CreateSections(SectionList &unified_section_list) { |
| 190 | +} |
| 191 | + |
| 192 | +void ObjectFileAIXCore::Dump(Stream *s) { |
| 193 | +} |
| 194 | + |
| 195 | +ArchSpec ObjectFileAIXCore::GetArchitecture() { |
| 196 | + ArchSpec arch_spec = ArchSpec(eArchTypeXCOFF, XCOFF::TCPU_PPC64, LLDB_INVALID_CPUTYPE); |
| 197 | + return arch_spec; |
| 198 | +} |
| 199 | + |
| 200 | +UUID ObjectFileAIXCore::GetUUID() { |
| 201 | + return UUID(); |
| 202 | +} |
| 203 | + |
| 204 | +uint32_t ObjectFileAIXCore::GetDependentModules(FileSpecList &files) { |
| 205 | + |
| 206 | + auto original_size = files.GetSize(); |
| 207 | + return files.GetSize() - original_size; |
| 208 | +} |
| 209 | + |
| 210 | +Address ObjectFileAIXCore::GetImageInfoAddress(Target *target) { |
| 211 | + return Address(); |
| 212 | +} |
| 213 | + |
| 214 | +lldb_private::Address ObjectFileAIXCore::GetBaseAddress() { |
| 215 | + return lldb_private::Address(); |
| 216 | +} |
| 217 | +ObjectFile::Type ObjectFileAIXCore::CalculateType() { |
| 218 | + return eTypeCoreFile; |
| 219 | +} |
| 220 | + |
| 221 | +ObjectFile::Strata ObjectFileAIXCore::CalculateStrata() { |
| 222 | + return eStrataUnknown; |
| 223 | +} |
| 224 | + |
| 225 | +std::vector<ObjectFile::LoadableData> |
| 226 | +ObjectFileAIXCore::GetLoadableData(Target &target) { |
| 227 | + std::vector<LoadableData> loadables; |
| 228 | + return loadables; |
| 229 | +} |
| 230 | + |
| 231 | +lldb::WritableDataBufferSP |
| 232 | +ObjectFileAIXCore::MapFileDataWritable(const FileSpec &file, uint64_t Size, |
| 233 | + uint64_t Offset) { |
| 234 | + return FileSystem::Instance().CreateWritableDataBuffer(file.GetPath(), Size, |
| 235 | + Offset); |
| 236 | +} |
| 237 | + |
| 238 | +ObjectFileAIXCore::ObjectFileAIXCore(const lldb::ModuleSP &module_sp, |
| 239 | + DataBufferSP data_sp, lldb::offset_t data_offset, |
| 240 | + const FileSpec *file, lldb::offset_t file_offset, |
| 241 | + lldb::offset_t length) |
| 242 | + : ObjectFile(module_sp, file, file_offset, length, data_sp, data_offset) |
| 243 | + { |
| 244 | + if (file) |
| 245 | + m_file = *file; |
| 246 | +} |
| 247 | + |
| 248 | +ObjectFileAIXCore::ObjectFileAIXCore(const lldb::ModuleSP &module_sp, |
| 249 | + DataBufferSP header_data_sp, |
| 250 | + const lldb::ProcessSP &process_sp, |
| 251 | + addr_t header_addr) |
| 252 | + : ObjectFile(module_sp, process_sp, header_addr, header_data_sp) |
| 253 | + { |
| 254 | +} |
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