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llvm-project/lldb/source/Expression/IRExecutionUnit.cpp

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//===-- IRExecutionUnit.cpp -------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// C Includes
// C++ Includes
// Other libraries and framework includes
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/SourceMgr.h"
// Project includes
#include "lldb/Core/DataBufferHeap.h"
#include "lldb/Core/DataExtractor.h"
#include "lldb/Core/Disassembler.h"
#include "lldb/Core/Log.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/Section.h"
#include "lldb/Expression/IRExecutionUnit.h"
#include "lldb/Target/ExecutionContext.h"
#include "lldb/Target/Target.h"
using namespace lldb_private;
IRExecutionUnit::IRExecutionUnit (std::unique_ptr<llvm::LLVMContext> &context_ap,
std::unique_ptr<llvm::Module> &module_ap,
ConstString &name,
const lldb::TargetSP &target_sp,
std::vector<std::string> &cpu_features) :
IRMemoryMap(target_sp),
m_context_ap(context_ap.release()),
m_module_ap(module_ap.release()),
m_module(m_module_ap.get()),
m_cpu_features(cpu_features),
m_name(name),
m_did_jit(false),
m_function_load_addr(LLDB_INVALID_ADDRESS),
m_function_end_load_addr(LLDB_INVALID_ADDRESS)
{
}
lldb::addr_t
IRExecutionUnit::WriteNow (const uint8_t *bytes,
size_t size,
Error &error)
{
lldb::addr_t allocation_process_addr = Malloc (size,
8,
lldb::ePermissionsWritable | lldb::ePermissionsReadable,
eAllocationPolicyMirror,
error);
if (!error.Success())
return LLDB_INVALID_ADDRESS;
WriteMemory(allocation_process_addr, bytes, size, error);
if (!error.Success())
{
Error err;
Free (allocation_process_addr, err);
return LLDB_INVALID_ADDRESS;
}
if (Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS))
{
DataBufferHeap my_buffer(size, 0);
Error err;
ReadMemory(my_buffer.GetBytes(), allocation_process_addr, size, err);
if (err.Success())
{
DataExtractor my_extractor(my_buffer.GetBytes(), my_buffer.GetByteSize(), lldb::eByteOrderBig, 8);
my_extractor.PutToLog(log, 0, my_buffer.GetByteSize(), allocation_process_addr, 16, DataExtractor::TypeUInt8);
}
}
return allocation_process_addr;
}
void
IRExecutionUnit::FreeNow (lldb::addr_t allocation)
{
if (allocation == LLDB_INVALID_ADDRESS)
return;
Error err;
Free(allocation, err);
}
Error
IRExecutionUnit::DisassembleFunction (Stream &stream,
lldb::ProcessSP &process_wp)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
ExecutionContext exe_ctx(process_wp);
Error ret;
ret.Clear();
lldb::addr_t func_local_addr = LLDB_INVALID_ADDRESS;
lldb::addr_t func_remote_addr = LLDB_INVALID_ADDRESS;
for (JittedFunction &function : m_jitted_functions)
{
if (strstr(function.m_name.c_str(), m_name.AsCString()))
{
func_local_addr = function.m_local_addr;
func_remote_addr = function.m_remote_addr;
}
}
if (func_local_addr == LLDB_INVALID_ADDRESS)
{
ret.SetErrorToGenericError();
ret.SetErrorStringWithFormat("Couldn't find function %s for disassembly", m_name.AsCString());
return ret;
}
if (log)
log->Printf("Found function, has local address 0x%" PRIx64 " and remote address 0x%" PRIx64, (uint64_t)func_local_addr, (uint64_t)func_remote_addr);
std::pair <lldb::addr_t, lldb::addr_t> func_range;
func_range = GetRemoteRangeForLocal(func_local_addr);
if (func_range.first == 0 && func_range.second == 0)
{
ret.SetErrorToGenericError();
ret.SetErrorStringWithFormat("Couldn't find code range for function %s", m_name.AsCString());
return ret;
}
if (log)
log->Printf("Function's code range is [0x%" PRIx64 "+0x%" PRIx64 "]", func_range.first, func_range.second);
Target *target = exe_ctx.GetTargetPtr();
if (!target)
{
ret.SetErrorToGenericError();
ret.SetErrorString("Couldn't find the target");
return ret;
}
lldb::DataBufferSP buffer_sp(new DataBufferHeap(func_range.second, 0));
Process *process = exe_ctx.GetProcessPtr();
Error err;
process->ReadMemory(func_remote_addr, buffer_sp->GetBytes(), buffer_sp->GetByteSize(), err);
if (!err.Success())
{
ret.SetErrorToGenericError();
ret.SetErrorStringWithFormat("Couldn't read from process: %s", err.AsCString("unknown error"));
return ret;
}
ArchSpec arch(target->GetArchitecture());
const char *plugin_name = NULL;
const char *flavor_string = NULL;
lldb::DisassemblerSP disassembler_sp = Disassembler::FindPlugin(arch, flavor_string, plugin_name);
if (!disassembler_sp)
{
ret.SetErrorToGenericError();
ret.SetErrorStringWithFormat("Unable to find disassembler plug-in for %s architecture.", arch.GetArchitectureName());
return ret;
}
if (!process)
{
ret.SetErrorToGenericError();
ret.SetErrorString("Couldn't find the process");
return ret;
}
DataExtractor extractor(buffer_sp,
process->GetByteOrder(),
target->GetArchitecture().GetAddressByteSize());
if (log)
{
log->Printf("Function data has contents:");
extractor.PutToLog (log,
0,
extractor.GetByteSize(),
func_remote_addr,
16,
DataExtractor::TypeUInt8);
}
disassembler_sp->DecodeInstructions (Address (func_remote_addr), extractor, 0, UINT32_MAX, false, false);
InstructionList &instruction_list = disassembler_sp->GetInstructionList();
const uint32_t max_opcode_byte_size = instruction_list.GetMaxOpcocdeByteSize();
for (size_t instruction_index = 0, num_instructions = instruction_list.GetSize();
instruction_index < num_instructions;
++instruction_index)
{
Instruction *instruction = instruction_list.GetInstructionAtIndex(instruction_index).get();
instruction->Dump (&stream,
max_opcode_byte_size,
true,
true,
&exe_ctx);
stream.PutChar('\n');
}
// FIXME: The DisassemblerLLVMC has a reference cycle and won't go away if it has any active instructions.
// I'll fix that but for now, just clear the list and it will go away nicely.
disassembler_sp->GetInstructionList().Clear();
return ret;
}
static void ReportInlineAsmError(const llvm::SMDiagnostic &diagnostic, void *Context, unsigned LocCookie)
{
Error *err = static_cast<Error*>(Context);
if (err && err->Success())
{
err->SetErrorToGenericError();
err->SetErrorStringWithFormat("Inline assembly error: %s", diagnostic.getMessage().str().c_str());
}
}
void
IRExecutionUnit::GetRunnableInfo(Error &error,
lldb::addr_t &func_addr,
lldb::addr_t &func_end)
{
lldb::ProcessSP process_sp(GetProcessWP().lock());
static Mutex s_runnable_info_mutex(Mutex::Type::eMutexTypeRecursive);
func_addr = LLDB_INVALID_ADDRESS;
func_end = LLDB_INVALID_ADDRESS;
if (!process_sp)
{
error.SetErrorToGenericError();
error.SetErrorString("Couldn't write the JIT compiled code into the process because the process is invalid");
return;
}
if (m_did_jit)
{
func_addr = m_function_load_addr;
func_end = m_function_end_load_addr;
return;
};
Mutex::Locker runnable_info_mutex_locker(s_runnable_info_mutex);
m_did_jit = true;
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
std::string error_string;
if (log)
{
std::string s;
llvm::raw_string_ostream oss(s);
m_module->print(oss, NULL);
oss.flush();
log->Printf ("Module being sent to JIT: \n%s", s.c_str());
}
llvm::Triple triple(m_module->getTargetTriple());
llvm::Function *function = m_module->getFunction (m_name.AsCString());
llvm::Reloc::Model relocModel;
llvm::CodeModel::Model codeModel;
if (triple.isOSBinFormatELF())
{
relocModel = llvm::Reloc::Static;
// This will be small for 32-bit and large for 64-bit.
codeModel = llvm::CodeModel::JITDefault;
}
else
{
relocModel = llvm::Reloc::PIC_;
codeModel = llvm::CodeModel::Small;
}
m_module_ap->getContext().setInlineAsmDiagnosticHandler(ReportInlineAsmError, &error);
llvm::EngineBuilder builder(m_module_ap.get());
builder.setEngineKind(llvm::EngineKind::JIT)
.setErrorStr(&error_string)
.setRelocationModel(relocModel)
.setJITMemoryManager(new MemoryManager(*this))
.setOptLevel(llvm::CodeGenOpt::Less)
.setAllocateGVsWithCode(true)
.setCodeModel(codeModel)
.setUseMCJIT(true);
llvm::StringRef mArch;
llvm::StringRef mCPU;
llvm::SmallVector<std::string, 0> mAttrs;
for (std::string &feature : m_cpu_features)
mAttrs.push_back(feature);
llvm::TargetMachine *target_machine = builder.selectTarget(triple,
mArch,
mCPU,
mAttrs);
m_execution_engine_ap.reset(builder.create(target_machine));
if (!m_execution_engine_ap.get())
{
error.SetErrorToGenericError();
error.SetErrorStringWithFormat("Couldn't JIT the function: %s", error_string.c_str());
return;
}
else
{
m_module_ap.release(); // ownership was transferred
}
// Make sure we see all sections, including ones that don't have relocations...
m_execution_engine_ap->setProcessAllSections(true);
m_execution_engine_ap->DisableLazyCompilation();
// We don't actually need the function pointer here, this just forces it to get resolved.
void *fun_ptr = m_execution_engine_ap->getPointerToFunction(function);
if (!error.Success())
{
// We got an error through our callback!
return;
}
if (!function)
{
error.SetErrorToGenericError();
error.SetErrorStringWithFormat("Couldn't find '%s' in the JITted module", m_name.AsCString());
return;
}
if (!fun_ptr)
{
error.SetErrorToGenericError();
error.SetErrorStringWithFormat("'%s' was in the JITted module but wasn't lowered", m_name.AsCString());
return;
}
m_jitted_functions.push_back (JittedFunction(m_name.AsCString(), (lldb::addr_t)fun_ptr));
CommitAllocations(process_sp);
ReportAllocations(*m_execution_engine_ap);
WriteData(process_sp);
for (JittedFunction &jitted_function : m_jitted_functions)
{
jitted_function.m_remote_addr = GetRemoteAddressForLocal (jitted_function.m_local_addr);
if (!jitted_function.m_name.compare(m_name.AsCString()))
{
AddrRange func_range = GetRemoteRangeForLocal(jitted_function.m_local_addr);
m_function_end_load_addr = func_range.first + func_range.second;
m_function_load_addr = jitted_function.m_remote_addr;
}
}
if (log)
{
log->Printf("Code can be run in the target.");
StreamString disassembly_stream;
Error err = DisassembleFunction(disassembly_stream, process_sp);
if (!err.Success())
{
log->Printf("Couldn't disassemble function : %s", err.AsCString("unknown error"));
}
else
{
log->Printf("Function disassembly:\n%s", disassembly_stream.GetData());
}
log->Printf("Sections: ");
for (AllocationRecord &record : m_records)
{
if (record.m_process_address != LLDB_INVALID_ADDRESS)
{
record.dump(log);
DataBufferHeap my_buffer(record.m_size, 0);
Error err;
ReadMemory(my_buffer.GetBytes(), record.m_process_address, record.m_size, err);
if (err.Success())
{
DataExtractor my_extractor(my_buffer.GetBytes(), my_buffer.GetByteSize(), lldb::eByteOrderBig, 8);
my_extractor.PutToLog(log, 0, my_buffer.GetByteSize(), record.m_process_address, 16, DataExtractor::TypeUInt8);
}
}
}
}
func_addr = m_function_load_addr;
func_end = m_function_end_load_addr;
return;
}
IRExecutionUnit::~IRExecutionUnit ()
{
m_module_ap.reset();
m_execution_engine_ap.reset();
m_context_ap.reset();
}
IRExecutionUnit::MemoryManager::MemoryManager (IRExecutionUnit &parent) :
m_default_mm_ap (llvm::JITMemoryManager::CreateDefaultMemManager()),
m_parent (parent)
{
}
IRExecutionUnit::MemoryManager::~MemoryManager ()
{
}
void
IRExecutionUnit::MemoryManager::setMemoryWritable ()
{
m_default_mm_ap->setMemoryWritable();
}
void
IRExecutionUnit::MemoryManager::setMemoryExecutable ()
{
m_default_mm_ap->setMemoryExecutable();
}
uint8_t *
IRExecutionUnit::MemoryManager::startFunctionBody(const llvm::Function *F,
uintptr_t &ActualSize)
{
return m_default_mm_ap->startFunctionBody(F, ActualSize);
}
uint8_t *
IRExecutionUnit::MemoryManager::allocateStub(const llvm::GlobalValue* F,
unsigned StubSize,
unsigned Alignment)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
uint8_t *return_value = m_default_mm_ap->allocateStub(F, StubSize, Alignment);
m_parent.m_records.push_back(AllocationRecord((uintptr_t)return_value,
lldb::ePermissionsReadable | lldb::ePermissionsWritable,
GetSectionTypeFromSectionName (llvm::StringRef(), AllocationKind::Stub),
StubSize,
Alignment,
eSectionIDInvalid,
NULL));
if (log)
{
log->Printf("IRExecutionUnit::allocateStub (F=%p, StubSize=%u, Alignment=%u) = %p",
static_cast<const void*>(F), StubSize, Alignment,
static_cast<void*>(return_value));
}
return return_value;
}
void
IRExecutionUnit::MemoryManager::endFunctionBody(const llvm::Function *F,
uint8_t *FunctionStart,
uint8_t *FunctionEnd)
{
m_default_mm_ap->endFunctionBody(F, FunctionStart, FunctionEnd);
}
lldb::SectionType
IRExecutionUnit::GetSectionTypeFromSectionName (const llvm::StringRef &name, IRExecutionUnit::AllocationKind alloc_kind)
{
lldb::SectionType sect_type = lldb::eSectionTypeCode;
switch (alloc_kind)
{
case AllocationKind::Stub: sect_type = lldb::eSectionTypeCode; break;
case AllocationKind::Code: sect_type = lldb::eSectionTypeCode; break;
case AllocationKind::Data: sect_type = lldb::eSectionTypeData; break;
case AllocationKind::Global:sect_type = lldb::eSectionTypeData; break;
case AllocationKind::Bytes: sect_type = lldb::eSectionTypeOther; break;
}
if (!name.empty())
{
if (name.equals("__text") || name.equals(".text"))
sect_type = lldb::eSectionTypeCode;
else if (name.equals("__data") || name.equals(".data"))
sect_type = lldb::eSectionTypeCode;
else if (name.startswith("__debug_") || name.startswith(".debug_"))
{
const uint32_t name_idx = name[0] == '_' ? 8 : 7;
llvm::StringRef dwarf_name(name.substr(name_idx));
switch (dwarf_name[0])
{
case 'a':
if (dwarf_name.equals("abbrev"))
sect_type = lldb::eSectionTypeDWARFDebugAbbrev;
else if (dwarf_name.equals("aranges"))
sect_type = lldb::eSectionTypeDWARFDebugAranges;
break;
case 'f':
if (dwarf_name.equals("frame"))
sect_type = lldb::eSectionTypeDWARFDebugFrame;
break;
case 'i':
if (dwarf_name.equals("info"))
sect_type = lldb::eSectionTypeDWARFDebugInfo;
break;
case 'l':
if (dwarf_name.equals("line"))
sect_type = lldb::eSectionTypeDWARFDebugLine;
else if (dwarf_name.equals("loc"))
sect_type = lldb::eSectionTypeDWARFDebugLoc;
break;
case 'm':
if (dwarf_name.equals("macinfo"))
sect_type = lldb::eSectionTypeDWARFDebugMacInfo;
break;
case 'p':
if (dwarf_name.equals("pubnames"))
sect_type = lldb::eSectionTypeDWARFDebugPubNames;
else if (dwarf_name.equals("pubtypes"))
sect_type = lldb::eSectionTypeDWARFDebugPubTypes;
break;
case 's':
if (dwarf_name.equals("str"))
sect_type = lldb::eSectionTypeDWARFDebugStr;
break;
case 'r':
if (dwarf_name.equals("ranges"))
sect_type = lldb::eSectionTypeDWARFDebugRanges;
break;
default:
break;
}
}
else if (name.startswith("__apple_") || name.startswith(".apple_"))
{
#if 0
const uint32_t name_idx = name[0] == '_' ? 8 : 7;
llvm::StringRef apple_name(name.substr(name_idx));
switch (apple_name[0])
{
case 'n':
if (apple_name.equals("names"))
sect_type = lldb::eSectionTypeDWARFAppleNames;
else if (apple_name.equals("namespac") || apple_name.equals("namespaces"))
sect_type = lldb::eSectionTypeDWARFAppleNamespaces;
break;
case 't':
if (apple_name.equals("types"))
sect_type = lldb::eSectionTypeDWARFAppleTypes;
break;
case 'o':
if (apple_name.equals("objc"))
sect_type = lldb::eSectionTypeDWARFAppleObjC;
break;
default:
break;
}
#else
sect_type = lldb::eSectionTypeInvalid;
#endif
}
else if (name.equals("__objc_imageinfo"))
sect_type = lldb::eSectionTypeOther;
}
return sect_type;
}
uint8_t *
IRExecutionUnit::MemoryManager::allocateSpace(intptr_t Size, unsigned Alignment)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
uint8_t *return_value = m_default_mm_ap->allocateSpace(Size, Alignment);
m_parent.m_records.push_back(AllocationRecord((uintptr_t)return_value,
lldb::ePermissionsReadable | lldb::ePermissionsWritable,
GetSectionTypeFromSectionName (llvm::StringRef(), AllocationKind::Bytes),
Size,
Alignment,
eSectionIDInvalid,
NULL));
if (log)
{
log->Printf("IRExecutionUnit::allocateSpace(Size=%" PRIu64 ", Alignment=%u) = %p",
(uint64_t)Size, Alignment, return_value);
}
return return_value;
}
uint8_t *
IRExecutionUnit::MemoryManager::allocateCodeSection(uintptr_t Size,
unsigned Alignment,
unsigned SectionID,
llvm::StringRef SectionName)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
uint8_t *return_value = m_default_mm_ap->allocateCodeSection(Size, Alignment, SectionID, SectionName);
m_parent.m_records.push_back(AllocationRecord((uintptr_t)return_value,
lldb::ePermissionsReadable | lldb::ePermissionsExecutable,
GetSectionTypeFromSectionName (SectionName, AllocationKind::Code),
Size,
Alignment,
SectionID,
SectionName.str().c_str()));
if (log)
{
log->Printf("IRExecutionUnit::allocateCodeSection(Size=0x%" PRIx64 ", Alignment=%u, SectionID=%u) = %p",
(uint64_t)Size, Alignment, SectionID, return_value);
}
return return_value;
}
uint8_t *
IRExecutionUnit::MemoryManager::allocateDataSection(uintptr_t Size,
unsigned Alignment,
unsigned SectionID,
llvm::StringRef SectionName,
bool IsReadOnly)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
uint8_t *return_value = m_default_mm_ap->allocateDataSection(Size, Alignment, SectionID, SectionName, IsReadOnly);
m_parent.m_records.push_back(AllocationRecord((uintptr_t)return_value,
lldb::ePermissionsReadable | (IsReadOnly ? 0 : lldb::ePermissionsWritable),
GetSectionTypeFromSectionName (SectionName, AllocationKind::Data),
Size,
Alignment,
SectionID,
SectionName.str().c_str()));
if (log)
{
log->Printf("IRExecutionUnit::allocateDataSection(Size=0x%" PRIx64 ", Alignment=%u, SectionID=%u) = %p",
(uint64_t)Size, Alignment, SectionID, return_value);
}
return return_value;
}
uint8_t *
IRExecutionUnit::MemoryManager::allocateGlobal(uintptr_t Size,
unsigned Alignment)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
uint8_t *return_value = m_default_mm_ap->allocateGlobal(Size, Alignment);
m_parent.m_records.push_back(AllocationRecord((uintptr_t)return_value,
lldb::ePermissionsReadable | lldb::ePermissionsWritable,
GetSectionTypeFromSectionName (llvm::StringRef(), AllocationKind::Global),
Size,
Alignment,
eSectionIDInvalid,
NULL));
if (log)
{
log->Printf("IRExecutionUnit::allocateGlobal(Size=0x%" PRIx64 ", Alignment=%u) = %p",
(uint64_t)Size, Alignment, return_value);
}
return return_value;
}
void
IRExecutionUnit::MemoryManager::deallocateFunctionBody(void *Body)
{
m_default_mm_ap->deallocateFunctionBody(Body);
}
lldb::addr_t
IRExecutionUnit::GetRemoteAddressForLocal (lldb::addr_t local_address)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
for (AllocationRecord &record : m_records)
{
if (local_address >= record.m_host_address &&
local_address < record.m_host_address + record.m_size)
{
if (record.m_process_address == LLDB_INVALID_ADDRESS)
return LLDB_INVALID_ADDRESS;
lldb::addr_t ret = record.m_process_address + (local_address - record.m_host_address);
if (log)
{
log->Printf("IRExecutionUnit::GetRemoteAddressForLocal() found 0x%" PRIx64 " in [0x%" PRIx64 "..0x%" PRIx64 "], and returned 0x%" PRIx64 " from [0x%" PRIx64 "..0x%" PRIx64 "].",
local_address,
(uint64_t)record.m_host_address,
(uint64_t)record.m_host_address + (uint64_t)record.m_size,
ret,
record.m_process_address,
record.m_process_address + record.m_size);
}
return ret;
}
}
return LLDB_INVALID_ADDRESS;
}
IRExecutionUnit::AddrRange
IRExecutionUnit::GetRemoteRangeForLocal (lldb::addr_t local_address)
{
for (AllocationRecord &record : m_records)
{
if (local_address >= record.m_host_address &&
local_address < record.m_host_address + record.m_size)
{
if (record.m_process_address == LLDB_INVALID_ADDRESS)
return AddrRange(0, 0);
return AddrRange(record.m_process_address, record.m_size);
}
}
return AddrRange (0, 0);
}
bool
IRExecutionUnit::CommitAllocations (lldb::ProcessSP &process_sp)
{
bool ret = true;
lldb_private::Error err;
for (AllocationRecord &record : m_records)
{
if (record.m_process_address != LLDB_INVALID_ADDRESS)
continue;
switch (record.m_sect_type)
{
case lldb::eSectionTypeInvalid:
case lldb::eSectionTypeDWARFDebugAbbrev:
case lldb::eSectionTypeDWARFDebugAranges:
case lldb::eSectionTypeDWARFDebugFrame:
case lldb::eSectionTypeDWARFDebugInfo:
case lldb::eSectionTypeDWARFDebugLine:
case lldb::eSectionTypeDWARFDebugLoc:
case lldb::eSectionTypeDWARFDebugMacInfo:
case lldb::eSectionTypeDWARFDebugPubNames:
case lldb::eSectionTypeDWARFDebugPubTypes:
case lldb::eSectionTypeDWARFDebugRanges:
case lldb::eSectionTypeDWARFDebugStr:
case lldb::eSectionTypeDWARFAppleNames:
case lldb::eSectionTypeDWARFAppleTypes:
case lldb::eSectionTypeDWARFAppleNamespaces:
case lldb::eSectionTypeDWARFAppleObjC:
err.Clear();
break;
default:
record.m_process_address = Malloc (record.m_size,
record.m_alignment,
record.m_permissions,
eAllocationPolicyProcessOnly,
err);
break;
}
if (!err.Success())
{
ret = false;
break;
}
}
if (!ret)
{
for (AllocationRecord &record : m_records)
{
if (record.m_process_address != LLDB_INVALID_ADDRESS)
{
Free(record.m_process_address, err);
record.m_process_address = LLDB_INVALID_ADDRESS;
}
}
}
return ret;
}
void
IRExecutionUnit::ReportAllocations (llvm::ExecutionEngine &engine)
{
for (AllocationRecord &record : m_records)
{
if (record.m_process_address == LLDB_INVALID_ADDRESS)
continue;
if (record.m_section_id == eSectionIDInvalid)
continue;
engine.mapSectionAddress((void*)record.m_host_address, record.m_process_address);
}
// Trigger re-application of relocations.
engine.finalizeObject();
}
bool
IRExecutionUnit::WriteData (lldb::ProcessSP &process_sp)
{
bool wrote_something = false;
for (AllocationRecord &record : m_records)
{
if (record.m_process_address != LLDB_INVALID_ADDRESS)
{
lldb_private::Error err;
WriteMemory (record.m_process_address, (uint8_t*)record.m_host_address, record.m_size, err);
if (err.Success())
wrote_something = true;
}
}
return wrote_something;
}
void
IRExecutionUnit::AllocationRecord::dump (Log *log)
{
if (!log)
return;
log->Printf("[0x%llx+0x%llx]->0x%llx (alignment %d, section ID %d)",
(unsigned long long)m_host_address,
(unsigned long long)m_size,
(unsigned long long)m_process_address,
(unsigned)m_alignment,
(unsigned)m_section_id);
}
lldb::ByteOrder
IRExecutionUnit::GetByteOrder () const
{
ExecutionContext exe_ctx (GetBestExecutionContextScope());
return exe_ctx.GetByteOrder();
}
uint32_t
IRExecutionUnit::GetAddressByteSize () const
{
ExecutionContext exe_ctx (GetBestExecutionContextScope());
return exe_ctx.GetAddressByteSize();
}
void
IRExecutionUnit::PopulateSymtab (lldb_private::ObjectFile *obj_file,
lldb_private::Symtab &symtab)
{
// No symbols yet...
}
void
IRExecutionUnit::PopulateSectionList (lldb_private::ObjectFile *obj_file,
lldb_private::SectionList &section_list)
{
for (AllocationRecord &record : m_records)
{
if (record.m_size > 0)
{
lldb::SectionSP section_sp (new lldb_private::Section (obj_file->GetModule(),
obj_file,
record.m_section_id,
ConstString(record.m_name),
record.m_sect_type,
record.m_process_address,
record.m_size,
record.m_host_address, // file_offset (which is the host address for the data)
record.m_size, // file_size
record.m_permissions)); // flags
section_list.AddSection (section_sp);
}
}
}
bool
IRExecutionUnit::GetArchitecture (lldb_private::ArchSpec &arch)
{
ExecutionContext exe_ctx (GetBestExecutionContextScope());
Target *target = exe_ctx.GetTargetPtr();
if (target)
arch = target->GetArchitecture();
else
arch.Clear();
return arch.IsValid();
}
lldb::ModuleSP
IRExecutionUnit::GetJITModule ()
{
ExecutionContext exe_ctx (GetBestExecutionContextScope());
Target *target = exe_ctx.GetTargetPtr();
if (target)
{
lldb::ModuleSP jit_module_sp = lldb_private::Module::CreateJITModule (std::static_pointer_cast<lldb_private::ObjectFileJITDelegate>(shared_from_this()));
if (jit_module_sp)
{
bool changed = false;
jit_module_sp->SetLoadAddress(*target, 0, true, changed);
}
return jit_module_sp;
}
return lldb::ModuleSP();
}
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