Initial check in
Bug: 137197907
diff --git a/src/llvm-project/lldb/source/Expression/Materializer.cpp b/src/llvm-project/lldb/source/Expression/Materializer.cpp
new file mode 100644
index 0000000..4d4e5e2
--- /dev/null
+++ b/src/llvm-project/lldb/source/Expression/Materializer.cpp
@@ -0,0 +1,1449 @@
+//===-- Materializer.cpp ----------------------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Expression/Materializer.h"
+#include "lldb/Core/DumpDataExtractor.h"
+#include "lldb/Core/ValueObjectConstResult.h"
+#include "lldb/Core/ValueObjectVariable.h"
+#include "lldb/Expression/ExpressionVariable.h"
+#include "lldb/Symbol/ClangASTContext.h"
+#include "lldb/Symbol/Symbol.h"
+#include "lldb/Symbol/Type.h"
+#include "lldb/Symbol/Variable.h"
+#include "lldb/Target/ExecutionContext.h"
+#include "lldb/Target/RegisterContext.h"
+#include "lldb/Target/StackFrame.h"
+#include "lldb/Target/Target.h"
+#include "lldb/Target/Thread.h"
+#include "lldb/Utility/Log.h"
+#include "lldb/Utility/RegisterValue.h"
+
+using namespace lldb_private;
+
+uint32_t Materializer::AddStructMember(Entity &entity) {
+ uint32_t size = entity.GetSize();
+ uint32_t alignment = entity.GetAlignment();
+
+ uint32_t ret;
+
+ if (m_current_offset == 0)
+ m_struct_alignment = alignment;
+
+ if (m_current_offset % alignment)
+ m_current_offset += (alignment - (m_current_offset % alignment));
+
+ ret = m_current_offset;
+
+ m_current_offset += size;
+
+ return ret;
+}
+
+void Materializer::Entity::SetSizeAndAlignmentFromType(CompilerType &type) {
+ if (llvm::Optional<uint64_t> size = type.GetByteSize(nullptr))
+ m_size = *size;
+
+ uint32_t bit_alignment = type.GetTypeBitAlign();
+
+ if (bit_alignment % 8) {
+ bit_alignment += 8;
+ bit_alignment &= ~((uint32_t)0x111u);
+ }
+
+ m_alignment = bit_alignment / 8;
+}
+
+class EntityPersistentVariable : public Materializer::Entity {
+public:
+ EntityPersistentVariable(lldb::ExpressionVariableSP &persistent_variable_sp,
+ Materializer::PersistentVariableDelegate *delegate)
+ : Entity(), m_persistent_variable_sp(persistent_variable_sp),
+ m_delegate(delegate) {
+ // Hard-coding to maximum size of a pointer since persistent variables are
+ // materialized by reference
+ m_size = 8;
+ m_alignment = 8;
+ }
+
+ void MakeAllocation(IRMemoryMap &map, Status &err) {
+ Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
+
+ // Allocate a spare memory area to store the persistent variable's
+ // contents.
+
+ Status allocate_error;
+ const bool zero_memory = false;
+
+ lldb::addr_t mem = map.Malloc(
+ m_persistent_variable_sp->GetByteSize(), 8,
+ lldb::ePermissionsReadable | lldb::ePermissionsWritable,
+ IRMemoryMap::eAllocationPolicyMirror, zero_memory, allocate_error);
+
+ if (!allocate_error.Success()) {
+ err.SetErrorStringWithFormat(
+ "couldn't allocate a memory area to store %s: %s",
+ m_persistent_variable_sp->GetName().GetCString(),
+ allocate_error.AsCString());
+ return;
+ }
+
+ if (log)
+ log->Printf("Allocated %s (0x%" PRIx64 ") successfully",
+ m_persistent_variable_sp->GetName().GetCString(), mem);
+
+ // Put the location of the spare memory into the live data of the
+ // ValueObject.
+
+ m_persistent_variable_sp->m_live_sp = ValueObjectConstResult::Create(
+ map.GetBestExecutionContextScope(),
+ m_persistent_variable_sp->GetCompilerType(),
+ m_persistent_variable_sp->GetName(), mem, eAddressTypeLoad,
+ map.GetAddressByteSize());
+
+ // Clear the flag if the variable will never be deallocated.
+
+ if (m_persistent_variable_sp->m_flags &
+ ExpressionVariable::EVKeepInTarget) {
+ Status leak_error;
+ map.Leak(mem, leak_error);
+ m_persistent_variable_sp->m_flags &=
+ ~ExpressionVariable::EVNeedsAllocation;
+ }
+
+ // Write the contents of the variable to the area.
+
+ Status write_error;
+
+ map.WriteMemory(mem, m_persistent_variable_sp->GetValueBytes(),
+ m_persistent_variable_sp->GetByteSize(), write_error);
+
+ if (!write_error.Success()) {
+ err.SetErrorStringWithFormat(
+ "couldn't write %s to the target: %s",
+ m_persistent_variable_sp->GetName().AsCString(),
+ write_error.AsCString());
+ return;
+ }
+ }
+
+ void DestroyAllocation(IRMemoryMap &map, Status &err) {
+ Status deallocate_error;
+
+ map.Free((lldb::addr_t)m_persistent_variable_sp->m_live_sp->GetValue()
+ .GetScalar()
+ .ULongLong(),
+ deallocate_error);
+
+ m_persistent_variable_sp->m_live_sp.reset();
+
+ if (!deallocate_error.Success()) {
+ err.SetErrorStringWithFormat(
+ "couldn't deallocate memory for %s: %s",
+ m_persistent_variable_sp->GetName().GetCString(),
+ deallocate_error.AsCString());
+ }
+ }
+
+ void Materialize(lldb::StackFrameSP &frame_sp, IRMemoryMap &map,
+ lldb::addr_t process_address, Status &err) override {
+ Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
+
+ const lldb::addr_t load_addr = process_address + m_offset;
+
+ if (log) {
+ log->Printf("EntityPersistentVariable::Materialize [address = 0x%" PRIx64
+ ", m_name = %s, m_flags = 0x%hx]",
+ (uint64_t)load_addr,
+ m_persistent_variable_sp->GetName().AsCString(),
+ m_persistent_variable_sp->m_flags);
+ }
+
+ if (m_persistent_variable_sp->m_flags &
+ ExpressionVariable::EVNeedsAllocation) {
+ MakeAllocation(map, err);
+ m_persistent_variable_sp->m_flags |=
+ ExpressionVariable::EVIsLLDBAllocated;
+
+ if (!err.Success())
+ return;
+ }
+
+ if ((m_persistent_variable_sp->m_flags &
+ ExpressionVariable::EVIsProgramReference &&
+ m_persistent_variable_sp->m_live_sp) ||
+ m_persistent_variable_sp->m_flags &
+ ExpressionVariable::EVIsLLDBAllocated) {
+ Status write_error;
+
+ map.WriteScalarToMemory(
+ load_addr,
+ m_persistent_variable_sp->m_live_sp->GetValue().GetScalar(),
+ map.GetAddressByteSize(), write_error);
+
+ if (!write_error.Success()) {
+ err.SetErrorStringWithFormat(
+ "couldn't write the location of %s to memory: %s",
+ m_persistent_variable_sp->GetName().AsCString(),
+ write_error.AsCString());
+ }
+ } else {
+ err.SetErrorStringWithFormat(
+ "no materialization happened for persistent variable %s",
+ m_persistent_variable_sp->GetName().AsCString());
+ return;
+ }
+ }
+
+ void Dematerialize(lldb::StackFrameSP &frame_sp, IRMemoryMap &map,
+ lldb::addr_t process_address, lldb::addr_t frame_top,
+ lldb::addr_t frame_bottom, Status &err) override {
+ Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
+
+ const lldb::addr_t load_addr = process_address + m_offset;
+
+ if (log) {
+ log->Printf(
+ "EntityPersistentVariable::Dematerialize [address = 0x%" PRIx64
+ ", m_name = %s, m_flags = 0x%hx]",
+ (uint64_t)process_address + m_offset,
+ m_persistent_variable_sp->GetName().AsCString(),
+ m_persistent_variable_sp->m_flags);
+ }
+
+ if (m_delegate) {
+ m_delegate->DidDematerialize(m_persistent_variable_sp);
+ }
+
+ if ((m_persistent_variable_sp->m_flags &
+ ExpressionVariable::EVIsLLDBAllocated) ||
+ (m_persistent_variable_sp->m_flags &
+ ExpressionVariable::EVIsProgramReference)) {
+ if (m_persistent_variable_sp->m_flags &
+ ExpressionVariable::EVIsProgramReference &&
+ !m_persistent_variable_sp->m_live_sp) {
+ // If the reference comes from the program, then the
+ // ClangExpressionVariable's live variable data hasn't been set up yet.
+ // Do this now.
+
+ lldb::addr_t location;
+ Status read_error;
+
+ map.ReadPointerFromMemory(&location, load_addr, read_error);
+
+ if (!read_error.Success()) {
+ err.SetErrorStringWithFormat(
+ "couldn't read the address of program-allocated variable %s: %s",
+ m_persistent_variable_sp->GetName().GetCString(),
+ read_error.AsCString());
+ return;
+ }
+
+ m_persistent_variable_sp->m_live_sp = ValueObjectConstResult::Create(
+ map.GetBestExecutionContextScope(),
+ m_persistent_variable_sp.get()->GetCompilerType(),
+ m_persistent_variable_sp->GetName(), location, eAddressTypeLoad,
+ m_persistent_variable_sp->GetByteSize());
+
+ if (frame_top != LLDB_INVALID_ADDRESS &&
+ frame_bottom != LLDB_INVALID_ADDRESS && location >= frame_bottom &&
+ location <= frame_top) {
+ // If the variable is resident in the stack frame created by the
+ // expression, then it cannot be relied upon to stay around. We
+ // treat it as needing reallocation.
+ m_persistent_variable_sp->m_flags |=
+ ExpressionVariable::EVIsLLDBAllocated;
+ m_persistent_variable_sp->m_flags |=
+ ExpressionVariable::EVNeedsAllocation;
+ m_persistent_variable_sp->m_flags |=
+ ExpressionVariable::EVNeedsFreezeDry;
+ m_persistent_variable_sp->m_flags &=
+ ~ExpressionVariable::EVIsProgramReference;
+ }
+ }
+
+ lldb::addr_t mem = m_persistent_variable_sp->m_live_sp->GetValue()
+ .GetScalar()
+ .ULongLong();
+
+ if (!m_persistent_variable_sp->m_live_sp) {
+ err.SetErrorStringWithFormat(
+ "couldn't find the memory area used to store %s",
+ m_persistent_variable_sp->GetName().GetCString());
+ return;
+ }
+
+ if (m_persistent_variable_sp->m_live_sp->GetValue()
+ .GetValueAddressType() != eAddressTypeLoad) {
+ err.SetErrorStringWithFormat(
+ "the address of the memory area for %s is in an incorrect format",
+ m_persistent_variable_sp->GetName().GetCString());
+ return;
+ }
+
+ if (m_persistent_variable_sp->m_flags &
+ ExpressionVariable::EVNeedsFreezeDry ||
+ m_persistent_variable_sp->m_flags &
+ ExpressionVariable::EVKeepInTarget) {
+ if (log)
+ log->Printf(
+ "Dematerializing %s from 0x%" PRIx64 " (size = %llu)",
+ m_persistent_variable_sp->GetName().GetCString(), (uint64_t)mem,
+ (unsigned long long)m_persistent_variable_sp->GetByteSize());
+
+ // Read the contents of the spare memory area
+
+ m_persistent_variable_sp->ValueUpdated();
+
+ Status read_error;
+
+ map.ReadMemory(m_persistent_variable_sp->GetValueBytes(), mem,
+ m_persistent_variable_sp->GetByteSize(), read_error);
+
+ if (!read_error.Success()) {
+ err.SetErrorStringWithFormat(
+ "couldn't read the contents of %s from memory: %s",
+ m_persistent_variable_sp->GetName().GetCString(),
+ read_error.AsCString());
+ return;
+ }
+
+ m_persistent_variable_sp->m_flags &=
+ ~ExpressionVariable::EVNeedsFreezeDry;
+ }
+ } else {
+ err.SetErrorStringWithFormat(
+ "no dematerialization happened for persistent variable %s",
+ m_persistent_variable_sp->GetName().AsCString());
+ return;
+ }
+
+ lldb::ProcessSP process_sp =
+ map.GetBestExecutionContextScope()->CalculateProcess();
+ if (!process_sp || !process_sp->CanJIT()) {
+ // Allocations are not persistent so persistent variables cannot stay
+ // materialized.
+
+ m_persistent_variable_sp->m_flags |=
+ ExpressionVariable::EVNeedsAllocation;
+
+ DestroyAllocation(map, err);
+ if (!err.Success())
+ return;
+ } else if (m_persistent_variable_sp->m_flags &
+ ExpressionVariable::EVNeedsAllocation &&
+ !(m_persistent_variable_sp->m_flags &
+ ExpressionVariable::EVKeepInTarget)) {
+ DestroyAllocation(map, err);
+ if (!err.Success())
+ return;
+ }
+ }
+
+ void DumpToLog(IRMemoryMap &map, lldb::addr_t process_address,
+ Log *log) override {
+ StreamString dump_stream;
+
+ Status err;
+
+ const lldb::addr_t load_addr = process_address + m_offset;
+
+ dump_stream.Printf("0x%" PRIx64 ": EntityPersistentVariable (%s)\n",
+ load_addr,
+ m_persistent_variable_sp->GetName().AsCString());
+
+ {
+ dump_stream.Printf("Pointer:\n");
+
+ DataBufferHeap data(m_size, 0);
+
+ map.ReadMemory(data.GetBytes(), load_addr, m_size, err);
+
+ if (!err.Success()) {
+ dump_stream.Printf(" <could not be read>\n");
+ } else {
+ DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16,
+ load_addr);
+
+ dump_stream.PutChar('\n');
+ }
+ }
+
+ {
+ dump_stream.Printf("Target:\n");
+
+ lldb::addr_t target_address;
+
+ map.ReadPointerFromMemory(&target_address, load_addr, err);
+
+ if (!err.Success()) {
+ dump_stream.Printf(" <could not be read>\n");
+ } else {
+ DataBufferHeap data(m_persistent_variable_sp->GetByteSize(), 0);
+
+ map.ReadMemory(data.GetBytes(), target_address,
+ m_persistent_variable_sp->GetByteSize(), err);
+
+ if (!err.Success()) {
+ dump_stream.Printf(" <could not be read>\n");
+ } else {
+ DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16,
+ target_address);
+
+ dump_stream.PutChar('\n');
+ }
+ }
+ }
+
+ log->PutString(dump_stream.GetString());
+ }
+
+ void Wipe(IRMemoryMap &map, lldb::addr_t process_address) override {}
+
+private:
+ lldb::ExpressionVariableSP m_persistent_variable_sp;
+ Materializer::PersistentVariableDelegate *m_delegate;
+};
+
+uint32_t Materializer::AddPersistentVariable(
+ lldb::ExpressionVariableSP &persistent_variable_sp,
+ PersistentVariableDelegate *delegate, Status &err) {
+ EntityVector::iterator iter = m_entities.insert(m_entities.end(), EntityUP());
+ iter->reset(new EntityPersistentVariable(persistent_variable_sp, delegate));
+ uint32_t ret = AddStructMember(**iter);
+ (*iter)->SetOffset(ret);
+ return ret;
+}
+
+class EntityVariable : public Materializer::Entity {
+public:
+ EntityVariable(lldb::VariableSP &variable_sp)
+ : Entity(), m_variable_sp(variable_sp), m_is_reference(false),
+ m_temporary_allocation(LLDB_INVALID_ADDRESS),
+ m_temporary_allocation_size(0) {
+ // Hard-coding to maximum size of a pointer since all variables are
+ // materialized by reference
+ m_size = 8;
+ m_alignment = 8;
+ m_is_reference =
+ m_variable_sp->GetType()->GetForwardCompilerType().IsReferenceType();
+ }
+
+ void Materialize(lldb::StackFrameSP &frame_sp, IRMemoryMap &map,
+ lldb::addr_t process_address, Status &err) override {
+ Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
+
+ const lldb::addr_t load_addr = process_address + m_offset;
+ if (log) {
+ log->Printf("EntityVariable::Materialize [address = 0x%" PRIx64
+ ", m_variable_sp = %s]",
+ (uint64_t)load_addr, m_variable_sp->GetName().AsCString());
+ }
+
+ ExecutionContextScope *scope = frame_sp.get();
+
+ if (!scope)
+ scope = map.GetBestExecutionContextScope();
+
+ lldb::ValueObjectSP valobj_sp =
+ ValueObjectVariable::Create(scope, m_variable_sp);
+
+ if (!valobj_sp) {
+ err.SetErrorStringWithFormat(
+ "couldn't get a value object for variable %s",
+ m_variable_sp->GetName().AsCString());
+ return;
+ }
+
+ Status valobj_error = valobj_sp->GetError();
+
+ if (valobj_error.Fail()) {
+ err.SetErrorStringWithFormat("couldn't get the value of variable %s: %s",
+ m_variable_sp->GetName().AsCString(),
+ valobj_error.AsCString());
+ return;
+ }
+
+ if (m_is_reference) {
+ DataExtractor valobj_extractor;
+ Status extract_error;
+ valobj_sp->GetData(valobj_extractor, extract_error);
+
+ if (!extract_error.Success()) {
+ err.SetErrorStringWithFormat(
+ "couldn't read contents of reference variable %s: %s",
+ m_variable_sp->GetName().AsCString(), extract_error.AsCString());
+ return;
+ }
+
+ lldb::offset_t offset = 0;
+ lldb::addr_t reference_addr = valobj_extractor.GetAddress(&offset);
+
+ Status write_error;
+ map.WritePointerToMemory(load_addr, reference_addr, write_error);
+
+ if (!write_error.Success()) {
+ err.SetErrorStringWithFormat("couldn't write the contents of reference "
+ "variable %s to memory: %s",
+ m_variable_sp->GetName().AsCString(),
+ write_error.AsCString());
+ return;
+ }
+ } else {
+ AddressType address_type = eAddressTypeInvalid;
+ const bool scalar_is_load_address = false;
+ lldb::addr_t addr_of_valobj =
+ valobj_sp->GetAddressOf(scalar_is_load_address, &address_type);
+ if (addr_of_valobj != LLDB_INVALID_ADDRESS) {
+ Status write_error;
+ map.WritePointerToMemory(load_addr, addr_of_valobj, write_error);
+
+ if (!write_error.Success()) {
+ err.SetErrorStringWithFormat(
+ "couldn't write the address of variable %s to memory: %s",
+ m_variable_sp->GetName().AsCString(), write_error.AsCString());
+ return;
+ }
+ } else {
+ DataExtractor data;
+ Status extract_error;
+ valobj_sp->GetData(data, extract_error);
+ if (!extract_error.Success()) {
+ err.SetErrorStringWithFormat("couldn't get the value of %s: %s",
+ m_variable_sp->GetName().AsCString(),
+ extract_error.AsCString());
+ return;
+ }
+
+ if (m_temporary_allocation != LLDB_INVALID_ADDRESS) {
+ err.SetErrorStringWithFormat(
+ "trying to create a temporary region for %s but one exists",
+ m_variable_sp->GetName().AsCString());
+ return;
+ }
+
+ if (data.GetByteSize() < m_variable_sp->GetType()->GetByteSize()) {
+ if (data.GetByteSize() == 0 &&
+ !m_variable_sp->LocationExpression().IsValid()) {
+ err.SetErrorStringWithFormat("the variable '%s' has no location, "
+ "it may have been optimized out",
+ m_variable_sp->GetName().AsCString());
+ } else {
+ err.SetErrorStringWithFormat(
+ "size of variable %s (%" PRIu64
+ ") is larger than the ValueObject's size (%" PRIu64 ")",
+ m_variable_sp->GetName().AsCString(),
+ m_variable_sp->GetType()->GetByteSize(), data.GetByteSize());
+ }
+ return;
+ }
+
+ size_t bit_align =
+ m_variable_sp->GetType()->GetLayoutCompilerType().GetTypeBitAlign();
+ size_t byte_align = (bit_align + 7) / 8;
+
+ if (!byte_align)
+ byte_align = 1;
+
+ Status alloc_error;
+ const bool zero_memory = false;
+
+ m_temporary_allocation = map.Malloc(
+ data.GetByteSize(), byte_align,
+ lldb::ePermissionsReadable | lldb::ePermissionsWritable,
+ IRMemoryMap::eAllocationPolicyMirror, zero_memory, alloc_error);
+
+ m_temporary_allocation_size = data.GetByteSize();
+
+ m_original_data.reset(
+ new DataBufferHeap(data.GetDataStart(), data.GetByteSize()));
+
+ if (!alloc_error.Success()) {
+ err.SetErrorStringWithFormat(
+ "couldn't allocate a temporary region for %s: %s",
+ m_variable_sp->GetName().AsCString(), alloc_error.AsCString());
+ return;
+ }
+
+ Status write_error;
+
+ map.WriteMemory(m_temporary_allocation, data.GetDataStart(),
+ data.GetByteSize(), write_error);
+
+ if (!write_error.Success()) {
+ err.SetErrorStringWithFormat(
+ "couldn't write to the temporary region for %s: %s",
+ m_variable_sp->GetName().AsCString(), write_error.AsCString());
+ return;
+ }
+
+ Status pointer_write_error;
+
+ map.WritePointerToMemory(load_addr, m_temporary_allocation,
+ pointer_write_error);
+
+ if (!pointer_write_error.Success()) {
+ err.SetErrorStringWithFormat(
+ "couldn't write the address of the temporary region for %s: %s",
+ m_variable_sp->GetName().AsCString(),
+ pointer_write_error.AsCString());
+ }
+ }
+ }
+ }
+
+ void Dematerialize(lldb::StackFrameSP &frame_sp, IRMemoryMap &map,
+ lldb::addr_t process_address, lldb::addr_t frame_top,
+ lldb::addr_t frame_bottom, Status &err) override {
+ Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
+
+ const lldb::addr_t load_addr = process_address + m_offset;
+ if (log) {
+ log->Printf("EntityVariable::Dematerialize [address = 0x%" PRIx64
+ ", m_variable_sp = %s]",
+ (uint64_t)load_addr, m_variable_sp->GetName().AsCString());
+ }
+
+ if (m_temporary_allocation != LLDB_INVALID_ADDRESS) {
+ ExecutionContextScope *scope = frame_sp.get();
+
+ if (!scope)
+ scope = map.GetBestExecutionContextScope();
+
+ lldb::ValueObjectSP valobj_sp =
+ ValueObjectVariable::Create(scope, m_variable_sp);
+
+ if (!valobj_sp) {
+ err.SetErrorStringWithFormat(
+ "couldn't get a value object for variable %s",
+ m_variable_sp->GetName().AsCString());
+ return;
+ }
+
+ lldb_private::DataExtractor data;
+
+ Status extract_error;
+
+ map.GetMemoryData(data, m_temporary_allocation, valobj_sp->GetByteSize(),
+ extract_error);
+
+ if (!extract_error.Success()) {
+ err.SetErrorStringWithFormat("couldn't get the data for variable %s",
+ m_variable_sp->GetName().AsCString());
+ return;
+ }
+
+ bool actually_write = true;
+
+ if (m_original_data) {
+ if ((data.GetByteSize() == m_original_data->GetByteSize()) &&
+ !memcmp(m_original_data->GetBytes(), data.GetDataStart(),
+ data.GetByteSize())) {
+ actually_write = false;
+ }
+ }
+
+ Status set_error;
+
+ if (actually_write) {
+ valobj_sp->SetData(data, set_error);
+
+ if (!set_error.Success()) {
+ err.SetErrorStringWithFormat(
+ "couldn't write the new contents of %s back into the variable",
+ m_variable_sp->GetName().AsCString());
+ return;
+ }
+ }
+
+ Status free_error;
+
+ map.Free(m_temporary_allocation, free_error);
+
+ if (!free_error.Success()) {
+ err.SetErrorStringWithFormat(
+ "couldn't free the temporary region for %s: %s",
+ m_variable_sp->GetName().AsCString(), free_error.AsCString());
+ return;
+ }
+
+ m_original_data.reset();
+ m_temporary_allocation = LLDB_INVALID_ADDRESS;
+ m_temporary_allocation_size = 0;
+ }
+ }
+
+ void DumpToLog(IRMemoryMap &map, lldb::addr_t process_address,
+ Log *log) override {
+ StreamString dump_stream;
+
+ const lldb::addr_t load_addr = process_address + m_offset;
+ dump_stream.Printf("0x%" PRIx64 ": EntityVariable\n", load_addr);
+
+ Status err;
+
+ lldb::addr_t ptr = LLDB_INVALID_ADDRESS;
+
+ {
+ dump_stream.Printf("Pointer:\n");
+
+ DataBufferHeap data(m_size, 0);
+
+ map.ReadMemory(data.GetBytes(), load_addr, m_size, err);
+
+ if (!err.Success()) {
+ dump_stream.Printf(" <could not be read>\n");
+ } else {
+ DataExtractor extractor(data.GetBytes(), data.GetByteSize(),
+ map.GetByteOrder(), map.GetAddressByteSize());
+
+ DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16,
+ load_addr);
+
+ lldb::offset_t offset;
+
+ ptr = extractor.GetPointer(&offset);
+
+ dump_stream.PutChar('\n');
+ }
+ }
+
+ if (m_temporary_allocation == LLDB_INVALID_ADDRESS) {
+ dump_stream.Printf("Points to process memory:\n");
+ } else {
+ dump_stream.Printf("Temporary allocation:\n");
+ }
+
+ if (ptr == LLDB_INVALID_ADDRESS) {
+ dump_stream.Printf(" <could not be be found>\n");
+ } else {
+ DataBufferHeap data(m_temporary_allocation_size, 0);
+
+ map.ReadMemory(data.GetBytes(), m_temporary_allocation,
+ m_temporary_allocation_size, err);
+
+ if (!err.Success()) {
+ dump_stream.Printf(" <could not be read>\n");
+ } else {
+ DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16,
+ load_addr);
+
+ dump_stream.PutChar('\n');
+ }
+ }
+
+ log->PutString(dump_stream.GetString());
+ }
+
+ void Wipe(IRMemoryMap &map, lldb::addr_t process_address) override {
+ if (m_temporary_allocation != LLDB_INVALID_ADDRESS) {
+ Status free_error;
+
+ map.Free(m_temporary_allocation, free_error);
+
+ m_temporary_allocation = LLDB_INVALID_ADDRESS;
+ m_temporary_allocation_size = 0;
+ }
+ }
+
+private:
+ lldb::VariableSP m_variable_sp;
+ bool m_is_reference;
+ lldb::addr_t m_temporary_allocation;
+ size_t m_temporary_allocation_size;
+ lldb::DataBufferSP m_original_data;
+};
+
+uint32_t Materializer::AddVariable(lldb::VariableSP &variable_sp, Status &err) {
+ EntityVector::iterator iter = m_entities.insert(m_entities.end(), EntityUP());
+ iter->reset(new EntityVariable(variable_sp));
+ uint32_t ret = AddStructMember(**iter);
+ (*iter)->SetOffset(ret);
+ return ret;
+}
+
+class EntityResultVariable : public Materializer::Entity {
+public:
+ EntityResultVariable(const CompilerType &type, bool is_program_reference,
+ bool keep_in_memory,
+ Materializer::PersistentVariableDelegate *delegate)
+ : Entity(), m_type(type), m_is_program_reference(is_program_reference),
+ m_keep_in_memory(keep_in_memory),
+ m_temporary_allocation(LLDB_INVALID_ADDRESS),
+ m_temporary_allocation_size(0), m_delegate(delegate) {
+ // Hard-coding to maximum size of a pointer since all results are
+ // materialized by reference
+ m_size = 8;
+ m_alignment = 8;
+ }
+
+ void Materialize(lldb::StackFrameSP &frame_sp, IRMemoryMap &map,
+ lldb::addr_t process_address, Status &err) override {
+ if (!m_is_program_reference) {
+ if (m_temporary_allocation != LLDB_INVALID_ADDRESS) {
+ err.SetErrorString("Trying to create a temporary region for the result "
+ "but one exists");
+ return;
+ }
+
+ const lldb::addr_t load_addr = process_address + m_offset;
+
+ ExecutionContextScope *exe_scope = map.GetBestExecutionContextScope();
+
+ llvm::Optional<uint64_t> byte_size = m_type.GetByteSize(exe_scope);
+ if (!byte_size) {
+ err.SetErrorString("can't get size of type");
+ return;
+ }
+ size_t bit_align = m_type.GetTypeBitAlign();
+ size_t byte_align = (bit_align + 7) / 8;
+
+ if (!byte_align)
+ byte_align = 1;
+
+ Status alloc_error;
+ const bool zero_memory = true;
+
+ m_temporary_allocation = map.Malloc(
+ *byte_size, byte_align,
+ lldb::ePermissionsReadable | lldb::ePermissionsWritable,
+ IRMemoryMap::eAllocationPolicyMirror, zero_memory, alloc_error);
+ m_temporary_allocation_size = *byte_size;
+
+ if (!alloc_error.Success()) {
+ err.SetErrorStringWithFormat(
+ "couldn't allocate a temporary region for the result: %s",
+ alloc_error.AsCString());
+ return;
+ }
+
+ Status pointer_write_error;
+
+ map.WritePointerToMemory(load_addr, m_temporary_allocation,
+ pointer_write_error);
+
+ if (!pointer_write_error.Success()) {
+ err.SetErrorStringWithFormat("couldn't write the address of the "
+ "temporary region for the result: %s",
+ pointer_write_error.AsCString());
+ }
+ }
+ }
+
+ void Dematerialize(lldb::StackFrameSP &frame_sp, IRMemoryMap &map,
+ lldb::addr_t process_address, lldb::addr_t frame_top,
+ lldb::addr_t frame_bottom, Status &err) override {
+ err.Clear();
+
+ ExecutionContextScope *exe_scope = map.GetBestExecutionContextScope();
+
+ if (!exe_scope) {
+ err.SetErrorString("Couldn't dematerialize a result variable: invalid "
+ "execution context scope");
+ return;
+ }
+
+ lldb::addr_t address;
+ Status read_error;
+ const lldb::addr_t load_addr = process_address + m_offset;
+
+ map.ReadPointerFromMemory(&address, load_addr, read_error);
+
+ if (!read_error.Success()) {
+ err.SetErrorString("Couldn't dematerialize a result variable: couldn't "
+ "read its address");
+ return;
+ }
+
+ lldb::TargetSP target_sp = exe_scope->CalculateTarget();
+
+ if (!target_sp) {
+ err.SetErrorString("Couldn't dematerialize a result variable: no target");
+ return;
+ }
+
+ Status type_system_error;
+ TypeSystem *type_system = target_sp->GetScratchTypeSystemForLanguage(
+ &type_system_error, m_type.GetMinimumLanguage());
+
+ if (!type_system) {
+ err.SetErrorStringWithFormat("Couldn't dematerialize a result variable: "
+ "couldn't get the corresponding type "
+ "system: %s",
+ type_system_error.AsCString());
+ return;
+ }
+
+ PersistentExpressionState *persistent_state =
+ type_system->GetPersistentExpressionState();
+
+ if (!persistent_state) {
+ err.SetErrorString("Couldn't dematerialize a result variable: "
+ "corresponding type system doesn't handle persistent "
+ "variables");
+ return;
+ }
+
+ ConstString name =
+ m_delegate
+ ? m_delegate->GetName()
+ : persistent_state->GetNextPersistentVariableName(
+ *target_sp, persistent_state->GetPersistentVariablePrefix());
+
+ lldb::ExpressionVariableSP ret = persistent_state->CreatePersistentVariable(
+ exe_scope, name, m_type, map.GetByteOrder(), map.GetAddressByteSize());
+
+ if (!ret) {
+ err.SetErrorStringWithFormat("couldn't dematerialize a result variable: "
+ "failed to make persistent variable %s",
+ name.AsCString());
+ return;
+ }
+
+ lldb::ProcessSP process_sp =
+ map.GetBestExecutionContextScope()->CalculateProcess();
+
+ if (m_delegate) {
+ m_delegate->DidDematerialize(ret);
+ }
+
+ bool can_persist =
+ (m_is_program_reference && process_sp && process_sp->CanJIT() &&
+ !(address >= frame_bottom && address < frame_top));
+
+ if (can_persist && m_keep_in_memory) {
+ ret->m_live_sp = ValueObjectConstResult::Create(exe_scope, m_type, name,
+ address, eAddressTypeLoad,
+ map.GetAddressByteSize());
+ }
+
+ ret->ValueUpdated();
+
+ const size_t pvar_byte_size = ret->GetByteSize();
+ uint8_t *pvar_data = ret->GetValueBytes();
+
+ map.ReadMemory(pvar_data, address, pvar_byte_size, read_error);
+
+ if (!read_error.Success()) {
+ err.SetErrorString(
+ "Couldn't dematerialize a result variable: couldn't read its memory");
+ return;
+ }
+
+ if (!can_persist || !m_keep_in_memory) {
+ ret->m_flags |= ExpressionVariable::EVNeedsAllocation;
+
+ if (m_temporary_allocation != LLDB_INVALID_ADDRESS) {
+ Status free_error;
+ map.Free(m_temporary_allocation, free_error);
+ }
+ } else {
+ ret->m_flags |= ExpressionVariable::EVIsLLDBAllocated;
+ }
+
+ m_temporary_allocation = LLDB_INVALID_ADDRESS;
+ m_temporary_allocation_size = 0;
+ }
+
+ void DumpToLog(IRMemoryMap &map, lldb::addr_t process_address,
+ Log *log) override {
+ StreamString dump_stream;
+
+ const lldb::addr_t load_addr = process_address + m_offset;
+
+ dump_stream.Printf("0x%" PRIx64 ": EntityResultVariable\n", load_addr);
+
+ Status err;
+
+ lldb::addr_t ptr = LLDB_INVALID_ADDRESS;
+
+ {
+ dump_stream.Printf("Pointer:\n");
+
+ DataBufferHeap data(m_size, 0);
+
+ map.ReadMemory(data.GetBytes(), load_addr, m_size, err);
+
+ if (!err.Success()) {
+ dump_stream.Printf(" <could not be read>\n");
+ } else {
+ DataExtractor extractor(data.GetBytes(), data.GetByteSize(),
+ map.GetByteOrder(), map.GetAddressByteSize());
+
+ DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16,
+ load_addr);
+
+ lldb::offset_t offset;
+
+ ptr = extractor.GetPointer(&offset);
+
+ dump_stream.PutChar('\n');
+ }
+ }
+
+ if (m_temporary_allocation == LLDB_INVALID_ADDRESS) {
+ dump_stream.Printf("Points to process memory:\n");
+ } else {
+ dump_stream.Printf("Temporary allocation:\n");
+ }
+
+ if (ptr == LLDB_INVALID_ADDRESS) {
+ dump_stream.Printf(" <could not be be found>\n");
+ } else {
+ DataBufferHeap data(m_temporary_allocation_size, 0);
+
+ map.ReadMemory(data.GetBytes(), m_temporary_allocation,
+ m_temporary_allocation_size, err);
+
+ if (!err.Success()) {
+ dump_stream.Printf(" <could not be read>\n");
+ } else {
+ DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16,
+ load_addr);
+
+ dump_stream.PutChar('\n');
+ }
+ }
+
+ log->PutString(dump_stream.GetString());
+ }
+
+ void Wipe(IRMemoryMap &map, lldb::addr_t process_address) override {
+ if (!m_keep_in_memory && m_temporary_allocation != LLDB_INVALID_ADDRESS) {
+ Status free_error;
+
+ map.Free(m_temporary_allocation, free_error);
+ }
+
+ m_temporary_allocation = LLDB_INVALID_ADDRESS;
+ m_temporary_allocation_size = 0;
+ }
+
+private:
+ CompilerType m_type;
+ bool m_is_program_reference;
+ bool m_keep_in_memory;
+
+ lldb::addr_t m_temporary_allocation;
+ size_t m_temporary_allocation_size;
+ Materializer::PersistentVariableDelegate *m_delegate;
+};
+
+uint32_t Materializer::AddResultVariable(const CompilerType &type,
+ bool is_program_reference,
+ bool keep_in_memory,
+ PersistentVariableDelegate *delegate,
+ Status &err) {
+ EntityVector::iterator iter = m_entities.insert(m_entities.end(), EntityUP());
+ iter->reset(new EntityResultVariable(type, is_program_reference,
+ keep_in_memory, delegate));
+ uint32_t ret = AddStructMember(**iter);
+ (*iter)->SetOffset(ret);
+ return ret;
+}
+
+class EntitySymbol : public Materializer::Entity {
+public:
+ EntitySymbol(const Symbol &symbol) : Entity(), m_symbol(symbol) {
+ // Hard-coding to maximum size of a symbol
+ m_size = 8;
+ m_alignment = 8;
+ }
+
+ void Materialize(lldb::StackFrameSP &frame_sp, IRMemoryMap &map,
+ lldb::addr_t process_address, Status &err) override {
+ Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
+
+ const lldb::addr_t load_addr = process_address + m_offset;
+
+ if (log) {
+ log->Printf("EntitySymbol::Materialize [address = 0x%" PRIx64
+ ", m_symbol = %s]",
+ (uint64_t)load_addr, m_symbol.GetName().AsCString());
+ }
+
+ const Address sym_address = m_symbol.GetAddress();
+
+ ExecutionContextScope *exe_scope = map.GetBestExecutionContextScope();
+
+ lldb::TargetSP target_sp;
+
+ if (exe_scope)
+ target_sp = map.GetBestExecutionContextScope()->CalculateTarget();
+
+ if (!target_sp) {
+ err.SetErrorStringWithFormat(
+ "couldn't resolve symbol %s because there is no target",
+ m_symbol.GetName().AsCString());
+ return;
+ }
+
+ lldb::addr_t resolved_address = sym_address.GetLoadAddress(target_sp.get());
+
+ if (resolved_address == LLDB_INVALID_ADDRESS)
+ resolved_address = sym_address.GetFileAddress();
+
+ Status pointer_write_error;
+
+ map.WritePointerToMemory(load_addr, resolved_address, pointer_write_error);
+
+ if (!pointer_write_error.Success()) {
+ err.SetErrorStringWithFormat(
+ "couldn't write the address of symbol %s: %s",
+ m_symbol.GetName().AsCString(), pointer_write_error.AsCString());
+ return;
+ }
+ }
+
+ void Dematerialize(lldb::StackFrameSP &frame_sp, IRMemoryMap &map,
+ lldb::addr_t process_address, lldb::addr_t frame_top,
+ lldb::addr_t frame_bottom, Status &err) override {
+ Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
+
+ const lldb::addr_t load_addr = process_address + m_offset;
+
+ if (log) {
+ log->Printf("EntitySymbol::Dematerialize [address = 0x%" PRIx64
+ ", m_symbol = %s]",
+ (uint64_t)load_addr, m_symbol.GetName().AsCString());
+ }
+
+ // no work needs to be done
+ }
+
+ void DumpToLog(IRMemoryMap &map, lldb::addr_t process_address,
+ Log *log) override {
+ StreamString dump_stream;
+
+ Status err;
+
+ const lldb::addr_t load_addr = process_address + m_offset;
+
+ dump_stream.Printf("0x%" PRIx64 ": EntitySymbol (%s)\n", load_addr,
+ m_symbol.GetName().AsCString());
+
+ {
+ dump_stream.Printf("Pointer:\n");
+
+ DataBufferHeap data(m_size, 0);
+
+ map.ReadMemory(data.GetBytes(), load_addr, m_size, err);
+
+ if (!err.Success()) {
+ dump_stream.Printf(" <could not be read>\n");
+ } else {
+ DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16,
+ load_addr);
+
+ dump_stream.PutChar('\n');
+ }
+ }
+
+ log->PutString(dump_stream.GetString());
+ }
+
+ void Wipe(IRMemoryMap &map, lldb::addr_t process_address) override {}
+
+private:
+ Symbol m_symbol;
+};
+
+uint32_t Materializer::AddSymbol(const Symbol &symbol_sp, Status &err) {
+ EntityVector::iterator iter = m_entities.insert(m_entities.end(), EntityUP());
+ iter->reset(new EntitySymbol(symbol_sp));
+ uint32_t ret = AddStructMember(**iter);
+ (*iter)->SetOffset(ret);
+ return ret;
+}
+
+class EntityRegister : public Materializer::Entity {
+public:
+ EntityRegister(const RegisterInfo ®ister_info)
+ : Entity(), m_register_info(register_info) {
+ // Hard-coding alignment conservatively
+ m_size = m_register_info.byte_size;
+ m_alignment = m_register_info.byte_size;
+ }
+
+ void Materialize(lldb::StackFrameSP &frame_sp, IRMemoryMap &map,
+ lldb::addr_t process_address, Status &err) override {
+ Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
+
+ const lldb::addr_t load_addr = process_address + m_offset;
+
+ if (log) {
+ log->Printf("EntityRegister::Materialize [address = 0x%" PRIx64
+ ", m_register_info = %s]",
+ (uint64_t)load_addr, m_register_info.name);
+ }
+
+ RegisterValue reg_value;
+
+ if (!frame_sp.get()) {
+ err.SetErrorStringWithFormat(
+ "couldn't materialize register %s without a stack frame",
+ m_register_info.name);
+ return;
+ }
+
+ lldb::RegisterContextSP reg_context_sp = frame_sp->GetRegisterContext();
+
+ if (!reg_context_sp->ReadRegister(&m_register_info, reg_value)) {
+ err.SetErrorStringWithFormat("couldn't read the value of register %s",
+ m_register_info.name);
+ return;
+ }
+
+ DataExtractor register_data;
+
+ if (!reg_value.GetData(register_data)) {
+ err.SetErrorStringWithFormat("couldn't get the data for register %s",
+ m_register_info.name);
+ return;
+ }
+
+ if (register_data.GetByteSize() != m_register_info.byte_size) {
+ err.SetErrorStringWithFormat(
+ "data for register %s had size %llu but we expected %llu",
+ m_register_info.name, (unsigned long long)register_data.GetByteSize(),
+ (unsigned long long)m_register_info.byte_size);
+ return;
+ }
+
+ m_register_contents.reset(new DataBufferHeap(register_data.GetDataStart(),
+ register_data.GetByteSize()));
+
+ Status write_error;
+
+ map.WriteMemory(load_addr, register_data.GetDataStart(),
+ register_data.GetByteSize(), write_error);
+
+ if (!write_error.Success()) {
+ err.SetErrorStringWithFormat(
+ "couldn't write the contents of register %s: %s",
+ m_register_info.name, write_error.AsCString());
+ return;
+ }
+ }
+
+ void Dematerialize(lldb::StackFrameSP &frame_sp, IRMemoryMap &map,
+ lldb::addr_t process_address, lldb::addr_t frame_top,
+ lldb::addr_t frame_bottom, Status &err) override {
+ Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
+
+ const lldb::addr_t load_addr = process_address + m_offset;
+
+ if (log) {
+ log->Printf("EntityRegister::Dematerialize [address = 0x%" PRIx64
+ ", m_register_info = %s]",
+ (uint64_t)load_addr, m_register_info.name);
+ }
+
+ Status extract_error;
+
+ DataExtractor register_data;
+
+ if (!frame_sp.get()) {
+ err.SetErrorStringWithFormat(
+ "couldn't dematerialize register %s without a stack frame",
+ m_register_info.name);
+ return;
+ }
+
+ lldb::RegisterContextSP reg_context_sp = frame_sp->GetRegisterContext();
+
+ map.GetMemoryData(register_data, load_addr, m_register_info.byte_size,
+ extract_error);
+
+ if (!extract_error.Success()) {
+ err.SetErrorStringWithFormat("couldn't get the data for register %s: %s",
+ m_register_info.name,
+ extract_error.AsCString());
+ return;
+ }
+
+ if (!memcmp(register_data.GetDataStart(), m_register_contents->GetBytes(),
+ register_data.GetByteSize())) {
+ // No write required, and in particular we avoid errors if the register
+ // wasn't writable
+
+ m_register_contents.reset();
+ return;
+ }
+
+ m_register_contents.reset();
+
+ RegisterValue register_value(
+ const_cast<uint8_t *>(register_data.GetDataStart()),
+ register_data.GetByteSize(), register_data.GetByteOrder());
+
+ if (!reg_context_sp->WriteRegister(&m_register_info, register_value)) {
+ err.SetErrorStringWithFormat("couldn't write the value of register %s",
+ m_register_info.name);
+ return;
+ }
+ }
+
+ void DumpToLog(IRMemoryMap &map, lldb::addr_t process_address,
+ Log *log) override {
+ StreamString dump_stream;
+
+ Status err;
+
+ const lldb::addr_t load_addr = process_address + m_offset;
+
+ dump_stream.Printf("0x%" PRIx64 ": EntityRegister (%s)\n", load_addr,
+ m_register_info.name);
+
+ {
+ dump_stream.Printf("Value:\n");
+
+ DataBufferHeap data(m_size, 0);
+
+ map.ReadMemory(data.GetBytes(), load_addr, m_size, err);
+
+ if (!err.Success()) {
+ dump_stream.Printf(" <could not be read>\n");
+ } else {
+ DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16,
+ load_addr);
+
+ dump_stream.PutChar('\n');
+ }
+ }
+
+ log->PutString(dump_stream.GetString());
+ }
+
+ void Wipe(IRMemoryMap &map, lldb::addr_t process_address) override {}
+
+private:
+ RegisterInfo m_register_info;
+ lldb::DataBufferSP m_register_contents;
+};
+
+uint32_t Materializer::AddRegister(const RegisterInfo ®ister_info,
+ Status &err) {
+ EntityVector::iterator iter = m_entities.insert(m_entities.end(), EntityUP());
+ iter->reset(new EntityRegister(register_info));
+ uint32_t ret = AddStructMember(**iter);
+ (*iter)->SetOffset(ret);
+ return ret;
+}
+
+Materializer::Materializer()
+ : m_dematerializer_wp(), m_current_offset(0), m_struct_alignment(8) {}
+
+Materializer::~Materializer() {
+ DematerializerSP dematerializer_sp = m_dematerializer_wp.lock();
+
+ if (dematerializer_sp)
+ dematerializer_sp->Wipe();
+}
+
+Materializer::DematerializerSP
+Materializer::Materialize(lldb::StackFrameSP &frame_sp, IRMemoryMap &map,
+ lldb::addr_t process_address, Status &error) {
+ ExecutionContextScope *exe_scope = frame_sp.get();
+
+ if (!exe_scope)
+ exe_scope = map.GetBestExecutionContextScope();
+
+ DematerializerSP dematerializer_sp = m_dematerializer_wp.lock();
+
+ if (dematerializer_sp) {
+ error.SetErrorToGenericError();
+ error.SetErrorString("Couldn't materialize: already materialized");
+ }
+
+ DematerializerSP ret(
+ new Dematerializer(*this, frame_sp, map, process_address));
+
+ if (!exe_scope) {
+ error.SetErrorToGenericError();
+ error.SetErrorString("Couldn't materialize: target doesn't exist");
+ }
+
+ for (EntityUP &entity_up : m_entities) {
+ entity_up->Materialize(frame_sp, map, process_address, error);
+
+ if (!error.Success())
+ return DematerializerSP();
+ }
+
+ if (Log *log =
+ lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)) {
+ log->Printf(
+ "Materializer::Materialize (frame_sp = %p, process_address = 0x%" PRIx64
+ ") materialized:",
+ static_cast<void *>(frame_sp.get()), process_address);
+ for (EntityUP &entity_up : m_entities)
+ entity_up->DumpToLog(map, process_address, log);
+ }
+
+ m_dematerializer_wp = ret;
+
+ return ret;
+}
+
+void Materializer::Dematerializer::Dematerialize(Status &error,
+ lldb::addr_t frame_bottom,
+ lldb::addr_t frame_top) {
+ lldb::StackFrameSP frame_sp;
+
+ lldb::ThreadSP thread_sp = m_thread_wp.lock();
+ if (thread_sp)
+ frame_sp = thread_sp->GetFrameWithStackID(m_stack_id);
+
+ ExecutionContextScope *exe_scope = m_map->GetBestExecutionContextScope();
+
+ if (!IsValid()) {
+ error.SetErrorToGenericError();
+ error.SetErrorString("Couldn't dematerialize: invalid dematerializer");
+ }
+
+ if (!exe_scope) {
+ error.SetErrorToGenericError();
+ error.SetErrorString("Couldn't dematerialize: target is gone");
+ } else {
+ if (Log *log =
+ lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)) {
+ log->Printf("Materializer::Dematerialize (frame_sp = %p, process_address "
+ "= 0x%" PRIx64 ") about to dematerialize:",
+ static_cast<void *>(frame_sp.get()), m_process_address);
+ for (EntityUP &entity_up : m_materializer->m_entities)
+ entity_up->DumpToLog(*m_map, m_process_address, log);
+ }
+
+ for (EntityUP &entity_up : m_materializer->m_entities) {
+ entity_up->Dematerialize(frame_sp, *m_map, m_process_address, frame_top,
+ frame_bottom, error);
+
+ if (!error.Success())
+ break;
+ }
+ }
+
+ Wipe();
+}
+
+void Materializer::Dematerializer::Wipe() {
+ if (!IsValid())
+ return;
+
+ for (EntityUP &entity_up : m_materializer->m_entities) {
+ entity_up->Wipe(*m_map, m_process_address);
+ }
+
+ m_materializer = nullptr;
+ m_map = nullptr;
+ m_process_address = LLDB_INVALID_ADDRESS;
+}
+
+Materializer::PersistentVariableDelegate::~PersistentVariableDelegate() =
+ default;
