forked from OSchip/llvm-project
1415 lines
51 KiB
C++
1415 lines
51 KiB
C++
//===-- Materializer.cpp ----------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Core/Log.h"
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#include "lldb/Core/RegisterValue.h"
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#include "lldb/Core/ValueObjectConstResult.h"
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#include "lldb/Core/ValueObjectVariable.h"
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#include "lldb/Expression/ClangExpressionVariable.h"
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#include "lldb/Expression/Materializer.h"
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#include "lldb/Symbol/ClangASTContext.h"
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#include "lldb/Symbol/Symbol.h"
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#include "lldb/Symbol/Type.h"
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#include "lldb/Symbol/Variable.h"
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#include "lldb/Target/ExecutionContext.h"
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#include "lldb/Target/RegisterContext.h"
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#include "lldb/Target/StackFrame.h"
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#include "lldb/Target/Target.h"
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#include "lldb/Target/Thread.h"
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using namespace lldb_private;
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uint32_t
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Materializer::AddStructMember (Entity &entity)
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{
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uint32_t size = entity.GetSize();
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uint32_t alignment = entity.GetAlignment();
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uint32_t ret;
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if (m_current_offset == 0)
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m_struct_alignment = alignment;
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if (m_current_offset % alignment)
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m_current_offset += (alignment - (m_current_offset % alignment));
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ret = m_current_offset;
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m_current_offset += size;
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return ret;
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}
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void
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Materializer::Entity::SetSizeAndAlignmentFromType (ClangASTType &type)
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{
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m_size = type.GetByteSize();
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uint32_t bit_alignment = type.GetTypeBitAlign();
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if (bit_alignment % 8)
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{
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bit_alignment += 8;
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bit_alignment &= ~((uint32_t)0x111u);
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}
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m_alignment = bit_alignment / 8;
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}
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class EntityPersistentVariable : public Materializer::Entity
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{
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public:
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EntityPersistentVariable (lldb::ClangExpressionVariableSP &persistent_variable_sp) :
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Entity(),
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m_persistent_variable_sp(persistent_variable_sp)
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{
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// Hard-coding to maximum size of a pointer since persistent variables are materialized by reference
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m_size = 8;
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m_alignment = 8;
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}
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void MakeAllocation (IRMemoryMap &map, Error &err)
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{
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Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
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// Allocate a spare memory area to store the persistent variable's contents.
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Error allocate_error;
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lldb::addr_t mem = map.Malloc(m_persistent_variable_sp->GetByteSize(),
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8,
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lldb::ePermissionsReadable | lldb::ePermissionsWritable,
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IRMemoryMap::eAllocationPolicyMirror,
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allocate_error);
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if (!allocate_error.Success())
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{
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err.SetErrorStringWithFormat("couldn't allocate a memory area to store %s: %s", m_persistent_variable_sp->GetName().GetCString(), allocate_error.AsCString());
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return;
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}
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if (log)
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log->Printf("Allocated %s (0x%" PRIx64 ") sucessfully", m_persistent_variable_sp->GetName().GetCString(), mem);
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// Put the location of the spare memory into the live data of the ValueObject.
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m_persistent_variable_sp->m_live_sp = ValueObjectConstResult::Create (map.GetBestExecutionContextScope(),
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m_persistent_variable_sp->GetTypeFromUser(),
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m_persistent_variable_sp->GetName(),
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mem,
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eAddressTypeLoad,
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m_persistent_variable_sp->GetByteSize());
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// Clear the flag if the variable will never be deallocated.
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if (m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVKeepInTarget)
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{
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Error leak_error;
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map.Leak(mem, leak_error);
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m_persistent_variable_sp->m_flags &= ~ClangExpressionVariable::EVNeedsAllocation;
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}
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// Write the contents of the variable to the area.
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Error write_error;
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map.WriteMemory (mem,
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m_persistent_variable_sp->GetValueBytes(),
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m_persistent_variable_sp->GetByteSize(),
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write_error);
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if (!write_error.Success())
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{
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err.SetErrorStringWithFormat ("couldn't write %s to the target: %s", m_persistent_variable_sp->GetName().AsCString(),
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write_error.AsCString());
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return;
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}
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}
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void DestroyAllocation (IRMemoryMap &map, Error &err)
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{
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Error deallocate_error;
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map.Free((lldb::addr_t)m_persistent_variable_sp->m_live_sp->GetValue().GetScalar().ULongLong(), deallocate_error);
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m_persistent_variable_sp->m_live_sp.reset();
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if (!deallocate_error.Success())
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{
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err.SetErrorStringWithFormat ("couldn't deallocate memory for %s: %s", m_persistent_variable_sp->GetName().GetCString(), deallocate_error.AsCString());
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}
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}
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void Materialize (lldb::StackFrameSP &frame_sp, IRMemoryMap &map, lldb::addr_t process_address, Error &err)
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{
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Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
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const lldb::addr_t load_addr = process_address + m_offset;
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if (log)
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{
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log->Printf("EntityPersistentVariable::Materialize [address = 0x%" PRIx64 ", m_name = %s, m_flags = 0x%hx]",
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(uint64_t)load_addr,
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m_persistent_variable_sp->GetName().AsCString(),
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m_persistent_variable_sp->m_flags);
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}
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if (m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVNeedsAllocation)
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{
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MakeAllocation(map, err);
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m_persistent_variable_sp->m_flags |= ClangExpressionVariable::EVIsLLDBAllocated;
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if (!err.Success())
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return;
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}
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if ((m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVIsProgramReference && m_persistent_variable_sp->m_live_sp) ||
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m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVIsLLDBAllocated)
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{
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Error write_error;
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map.WriteScalarToMemory(load_addr,
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m_persistent_variable_sp->m_live_sp->GetValue().GetScalar(),
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map.GetAddressByteSize(),
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write_error);
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if (!write_error.Success())
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{
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err.SetErrorStringWithFormat("couldn't write the location of %s to memory: %s", m_persistent_variable_sp->GetName().AsCString(), write_error.AsCString());
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}
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}
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else
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{
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err.SetErrorStringWithFormat("no materialization happened for persistent variable %s", m_persistent_variable_sp->GetName().AsCString());
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return;
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}
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}
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void Dematerialize (lldb::StackFrameSP &frame_sp,
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IRMemoryMap &map,
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lldb::addr_t process_address,
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lldb::addr_t frame_top,
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lldb::addr_t frame_bottom,
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Error &err)
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{
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Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
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const lldb::addr_t load_addr = process_address + m_offset;
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if (log)
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{
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log->Printf("EntityPersistentVariable::Dematerialize [address = 0x%" PRIx64 ", m_name = %s, m_flags = 0x%hx]",
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(uint64_t)process_address + m_offset,
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m_persistent_variable_sp->GetName().AsCString(),
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m_persistent_variable_sp->m_flags);
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}
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if ((m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVIsLLDBAllocated) ||
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(m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVIsProgramReference))
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{
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if (m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVIsProgramReference &&
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!m_persistent_variable_sp->m_live_sp)
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{
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// If the reference comes from the program, then the ClangExpressionVariable's
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// live variable data hasn't been set up yet. Do this now.
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lldb::addr_t location;
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Error read_error;
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map.ReadPointerFromMemory(&location, load_addr, read_error);
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if (!read_error.Success())
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{
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err.SetErrorStringWithFormat("couldn't read the address of program-allocated variable %s: %s", m_persistent_variable_sp->GetName().GetCString(), read_error.AsCString());
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return;
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}
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m_persistent_variable_sp->m_live_sp = ValueObjectConstResult::Create (map.GetBestExecutionContextScope (),
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m_persistent_variable_sp->GetTypeFromUser(),
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m_persistent_variable_sp->GetName(),
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location,
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eAddressTypeLoad,
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m_persistent_variable_sp->GetByteSize());
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if (frame_top != LLDB_INVALID_ADDRESS &&
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frame_bottom != LLDB_INVALID_ADDRESS &&
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location >= frame_bottom &&
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location <= frame_top)
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{
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// If the variable is resident in the stack frame created by the expression,
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// then it cannot be relied upon to stay around. We treat it as needing
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// reallocation.
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m_persistent_variable_sp->m_flags |= ClangExpressionVariable::EVIsLLDBAllocated;
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m_persistent_variable_sp->m_flags |= ClangExpressionVariable::EVNeedsAllocation;
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m_persistent_variable_sp->m_flags |= ClangExpressionVariable::EVNeedsFreezeDry;
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m_persistent_variable_sp->m_flags &= ~ClangExpressionVariable::EVIsProgramReference;
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}
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}
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lldb::addr_t mem = m_persistent_variable_sp->m_live_sp->GetValue().GetScalar().ULongLong();
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if (!m_persistent_variable_sp->m_live_sp)
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{
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err.SetErrorStringWithFormat("couldn't find the memory area used to store %s", m_persistent_variable_sp->GetName().GetCString());
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return;
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}
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if (m_persistent_variable_sp->m_live_sp->GetValue().GetValueAddressType() != eAddressTypeLoad)
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{
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err.SetErrorStringWithFormat("the address of the memory area for %s is in an incorrect format", m_persistent_variable_sp->GetName().GetCString());
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return;
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}
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if (m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVNeedsFreezeDry ||
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m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVKeepInTarget)
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{
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if (log)
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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());
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// Read the contents of the spare memory area
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m_persistent_variable_sp->ValueUpdated ();
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Error read_error;
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map.ReadMemory(m_persistent_variable_sp->GetValueBytes(),
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mem,
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m_persistent_variable_sp->GetByteSize(),
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read_error);
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if (!read_error.Success())
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{
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err.SetErrorStringWithFormat ("couldn't read the contents of %s from memory: %s", m_persistent_variable_sp->GetName().GetCString(), read_error.AsCString());
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return;
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}
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m_persistent_variable_sp->m_flags &= ~ClangExpressionVariable::EVNeedsFreezeDry;
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}
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}
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else
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{
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err.SetErrorStringWithFormat("no dematerialization happened for persistent variable %s", m_persistent_variable_sp->GetName().AsCString());
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return;
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}
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lldb::ProcessSP process_sp = map.GetBestExecutionContextScope()->CalculateProcess();
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if (!process_sp ||
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!process_sp->CanJIT())
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{
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// Allocations are not persistent so persistent variables cannot stay materialized.
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m_persistent_variable_sp->m_flags |= ClangExpressionVariable::EVNeedsAllocation;
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DestroyAllocation(map, err);
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if (!err.Success())
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return;
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}
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else if (m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVNeedsAllocation &&
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!(m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVKeepInTarget))
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{
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DestroyAllocation(map, err);
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if (!err.Success())
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return;
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}
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}
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void DumpToLog (IRMemoryMap &map, lldb::addr_t process_address, Log *log)
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{
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StreamString dump_stream;
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Error err;
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const lldb::addr_t load_addr = process_address + m_offset;
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dump_stream.Printf("0x%" PRIx64 ": EntityPersistentVariable (%s)\n", load_addr, m_persistent_variable_sp->GetName().AsCString());
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{
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dump_stream.Printf("Pointer:\n");
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DataBufferHeap data (m_size, 0);
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map.ReadMemory(data.GetBytes(), load_addr, m_size, err);
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if (!err.Success())
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{
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dump_stream.Printf(" <could not be read>\n");
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}
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else
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{
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DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize());
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extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, load_addr);
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dump_stream.PutChar('\n');
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}
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}
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{
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dump_stream.Printf("Target:\n");
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lldb::addr_t target_address;
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map.ReadPointerFromMemory (&target_address, load_addr, err);
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if (!err.Success())
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{
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dump_stream.Printf(" <could not be read>\n");
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}
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else
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{
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DataBufferHeap data (m_persistent_variable_sp->GetByteSize(), 0);
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map.ReadMemory(data.GetBytes(), target_address, m_persistent_variable_sp->GetByteSize(), err);
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if (!err.Success())
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{
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dump_stream.Printf(" <could not be read>\n");
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}
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else
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{
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DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize());
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extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, target_address);
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dump_stream.PutChar('\n');
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}
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}
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}
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log->PutCString(dump_stream.GetData());
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}
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void Wipe (IRMemoryMap &map, lldb::addr_t process_address)
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{
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}
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private:
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lldb::ClangExpressionVariableSP m_persistent_variable_sp;
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};
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uint32_t
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Materializer::AddPersistentVariable (lldb::ClangExpressionVariableSP &persistent_variable_sp, Error &err)
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{
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EntityVector::iterator iter = m_entities.insert(m_entities.end(), EntityUP());
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iter->reset (new EntityPersistentVariable (persistent_variable_sp));
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uint32_t ret = AddStructMember(**iter);
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(*iter)->SetOffset(ret);
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return ret;
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}
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class EntityVariable : public Materializer::Entity
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{
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public:
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EntityVariable (lldb::VariableSP &variable_sp) :
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Entity(),
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m_variable_sp(variable_sp),
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m_is_reference(false),
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m_temporary_allocation(LLDB_INVALID_ADDRESS),
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m_temporary_allocation_size(0)
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{
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// Hard-coding to maximum size of a pointer since all variables are materialized by reference
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m_size = 8;
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m_alignment = 8;
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m_is_reference = m_variable_sp->GetType()->GetClangForwardType().IsReferenceType();
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}
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void Materialize (lldb::StackFrameSP &frame_sp, IRMemoryMap &map, lldb::addr_t process_address, Error &err)
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{
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Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
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const lldb::addr_t load_addr = process_address + m_offset;
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if (log)
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{
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log->Printf("EntityVariable::Materialize [address = 0x%" PRIx64 ", m_variable_sp = %s]",
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(uint64_t)load_addr,
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m_variable_sp->GetName().AsCString());
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}
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ExecutionContextScope *scope = frame_sp.get();
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if (!scope)
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scope = map.GetBestExecutionContextScope();
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lldb::ValueObjectSP valobj_sp = ValueObjectVariable::Create(scope, m_variable_sp);
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if (!valobj_sp)
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{
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err.SetErrorStringWithFormat("couldn't get a value object for variable %s", m_variable_sp->GetName().AsCString());
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return;
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}
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if (m_is_reference)
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{
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DataExtractor valobj_extractor;
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valobj_sp->GetData(valobj_extractor);
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lldb::offset_t offset = 0;
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lldb::addr_t reference_addr = valobj_extractor.GetAddress(&offset);
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Error write_error;
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map.WritePointerToMemory(load_addr, reference_addr, write_error);
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if (!write_error.Success())
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{
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err.SetErrorStringWithFormat("couldn't write the contents of reference variable %s to memory: %s", m_variable_sp->GetName().AsCString(), write_error.AsCString());
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return;
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}
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}
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else
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{
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Error get_address_error;
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lldb::ValueObjectSP addr_of_valobj_sp = valobj_sp->AddressOf(get_address_error);
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if (get_address_error.Success())
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{
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DataExtractor valobj_extractor;
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addr_of_valobj_sp->GetData(valobj_extractor);
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lldb::offset_t offset = 0;
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lldb::addr_t addr_of_valobj_addr = valobj_extractor.GetAddress(&offset);
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Error write_error;
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map.WritePointerToMemory(load_addr, addr_of_valobj_addr, write_error);
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if (!write_error.Success())
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{
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err.SetErrorStringWithFormat("couldn't write the address of variable %s to memory: %s", m_variable_sp->GetName().AsCString(), write_error.AsCString());
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return;
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}
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}
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else
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{
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DataExtractor data;
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valobj_sp->GetData(data);
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if (m_temporary_allocation != LLDB_INVALID_ADDRESS)
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{
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err.SetErrorStringWithFormat("trying to create a temporary region for %s but one exists", m_variable_sp->GetName().AsCString());
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return;
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}
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if (data.GetByteSize() != m_variable_sp->GetType()->GetByteSize())
|
|
{
|
|
if (data.GetByteSize() == 0 && m_variable_sp->LocationExpression().IsValid() == false)
|
|
{
|
|
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 disagrees with the ValueObject's size", m_variable_sp->GetName().AsCString());
|
|
}
|
|
return;
|
|
}
|
|
|
|
size_t bit_align = m_variable_sp->GetType()->GetClangLayoutType().GetTypeBitAlign();
|
|
size_t byte_align = (bit_align + 7) / 8;
|
|
|
|
Error alloc_error;
|
|
|
|
m_temporary_allocation = map.Malloc(data.GetByteSize(), byte_align, lldb::ePermissionsReadable | lldb::ePermissionsWritable, IRMemoryMap::eAllocationPolicyMirror, alloc_error);
|
|
m_temporary_allocation_size = 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;
|
|
}
|
|
|
|
Error 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;
|
|
}
|
|
|
|
Error 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,
|
|
Error &err)
|
|
{
|
|
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;
|
|
|
|
Error 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;
|
|
}
|
|
|
|
Error set_error;
|
|
|
|
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;
|
|
}
|
|
|
|
Error 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_temporary_allocation = LLDB_INVALID_ADDRESS;
|
|
m_temporary_allocation_size = 0;
|
|
}
|
|
}
|
|
|
|
void DumpToLog (IRMemoryMap &map, lldb::addr_t process_address, Log *log)
|
|
{
|
|
StreamString dump_stream;
|
|
|
|
const lldb::addr_t load_addr = process_address + m_offset;
|
|
dump_stream.Printf("0x%" PRIx64 ": EntityVariable\n", load_addr);
|
|
|
|
Error 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());
|
|
|
|
extractor.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
|
|
{
|
|
DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize());
|
|
|
|
extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, load_addr);
|
|
|
|
dump_stream.PutChar('\n');
|
|
}
|
|
}
|
|
|
|
log->PutCString(dump_stream.GetData());
|
|
}
|
|
|
|
void Wipe (IRMemoryMap &map, lldb::addr_t process_address)
|
|
{
|
|
if (m_temporary_allocation != LLDB_INVALID_ADDRESS)
|
|
{
|
|
Error 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;
|
|
};
|
|
|
|
uint32_t
|
|
Materializer::AddVariable (lldb::VariableSP &variable_sp, Error &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 TypeFromUser &type, bool is_program_reference, bool keep_in_memory) :
|
|
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)
|
|
{
|
|
// 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, Error &err)
|
|
{
|
|
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;
|
|
|
|
size_t byte_size = m_type.GetByteSize();
|
|
size_t bit_align = m_type.GetTypeBitAlign();
|
|
size_t byte_align = (bit_align + 7) / 8;
|
|
|
|
Error alloc_error;
|
|
|
|
m_temporary_allocation = map.Malloc(byte_size, byte_align, lldb::ePermissionsReadable | lldb::ePermissionsWritable, IRMemoryMap::eAllocationPolicyMirror, 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;
|
|
}
|
|
|
|
Error 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,
|
|
Error &err)
|
|
{
|
|
err.SetErrorString("Tried to detmaterialize a result variable with the normal Dematerialize method");
|
|
}
|
|
|
|
void Dematerialize (lldb::ClangExpressionVariableSP &result_variable_sp,
|
|
lldb::StackFrameSP &frame_sp,
|
|
IRMemoryMap &map,
|
|
lldb::addr_t process_address,
|
|
lldb::addr_t frame_top,
|
|
lldb::addr_t frame_bottom,
|
|
Error &err)
|
|
{
|
|
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;
|
|
Error 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;
|
|
}
|
|
|
|
ConstString name = target_sp->GetPersistentVariables().GetNextPersistentVariableName();
|
|
|
|
lldb::ClangExpressionVariableSP ret;
|
|
|
|
ret = target_sp->GetPersistentVariables().CreateVariable(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();
|
|
|
|
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,
|
|
ret->GetByteSize());
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
result_variable_sp = ret;
|
|
|
|
if (!can_persist || !m_keep_in_memory)
|
|
{
|
|
ret->m_flags |= ClangExpressionVariable::EVNeedsAllocation;
|
|
|
|
if (m_temporary_allocation != LLDB_INVALID_ADDRESS)
|
|
{
|
|
Error free_error;
|
|
map.Free(m_temporary_allocation, free_error);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ret->m_flags |= ClangExpressionVariable::EVIsLLDBAllocated;
|
|
}
|
|
|
|
m_temporary_allocation = LLDB_INVALID_ADDRESS;
|
|
m_temporary_allocation_size = 0;
|
|
}
|
|
|
|
void DumpToLog (IRMemoryMap &map, lldb::addr_t process_address, Log *log)
|
|
{
|
|
StreamString dump_stream;
|
|
|
|
const lldb::addr_t load_addr = process_address + m_offset;
|
|
|
|
dump_stream.Printf("0x%" PRIx64 ": EntityResultVariable\n", load_addr);
|
|
|
|
Error 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());
|
|
|
|
extractor.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
|
|
{
|
|
DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize());
|
|
|
|
extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, load_addr);
|
|
|
|
dump_stream.PutChar('\n');
|
|
}
|
|
}
|
|
|
|
log->PutCString(dump_stream.GetData());
|
|
}
|
|
|
|
void Wipe (IRMemoryMap &map, lldb::addr_t process_address)
|
|
{
|
|
if (!m_keep_in_memory && m_temporary_allocation != LLDB_INVALID_ADDRESS)
|
|
{
|
|
Error free_error;
|
|
|
|
map.Free(m_temporary_allocation, free_error);
|
|
}
|
|
|
|
m_temporary_allocation = LLDB_INVALID_ADDRESS;
|
|
m_temporary_allocation_size = 0;
|
|
}
|
|
private:
|
|
TypeFromUser m_type;
|
|
bool m_is_program_reference;
|
|
bool m_keep_in_memory;
|
|
|
|
lldb::addr_t m_temporary_allocation;
|
|
size_t m_temporary_allocation_size;
|
|
};
|
|
|
|
uint32_t
|
|
Materializer::AddResultVariable (const TypeFromUser &type, bool is_program_reference, bool keep_in_memory, Error &err)
|
|
{
|
|
EntityVector::iterator iter = m_entities.insert(m_entities.end(), EntityUP());
|
|
iter->reset (new EntityResultVariable (type, is_program_reference, keep_in_memory));
|
|
uint32_t ret = AddStructMember(**iter);
|
|
(*iter)->SetOffset(ret);
|
|
m_result_entity = iter->get();
|
|
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, Error &err)
|
|
{
|
|
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());
|
|
}
|
|
|
|
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();
|
|
|
|
Error 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,
|
|
Error &err)
|
|
{
|
|
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)
|
|
{
|
|
StreamString dump_stream;
|
|
|
|
Error 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
|
|
{
|
|
DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize());
|
|
|
|
extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, load_addr);
|
|
|
|
dump_stream.PutChar('\n');
|
|
}
|
|
}
|
|
|
|
log->PutCString(dump_stream.GetData());
|
|
}
|
|
|
|
void Wipe (IRMemoryMap &map, lldb::addr_t process_address)
|
|
{
|
|
}
|
|
private:
|
|
Symbol m_symbol;
|
|
};
|
|
|
|
uint32_t
|
|
Materializer::AddSymbol (const Symbol &symbol_sp, Error &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, Error &err)
|
|
{
|
|
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()));
|
|
|
|
Error 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,
|
|
Error &err)
|
|
{
|
|
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);
|
|
}
|
|
|
|
Error 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)
|
|
{
|
|
StreamString dump_stream;
|
|
|
|
Error 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
|
|
{
|
|
DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize());
|
|
|
|
extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, load_addr);
|
|
|
|
dump_stream.PutChar('\n');
|
|
}
|
|
}
|
|
|
|
log->PutCString(dump_stream.GetData());
|
|
}
|
|
|
|
void Wipe (IRMemoryMap &map, lldb::addr_t process_address)
|
|
{
|
|
}
|
|
private:
|
|
RegisterInfo m_register_info;
|
|
lldb::DataBufferSP m_register_contents;
|
|
};
|
|
|
|
uint32_t
|
|
Materializer::AddRegister (const RegisterInfo ®ister_info, Error &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_result_entity(NULL),
|
|
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, Error &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:", 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 (Error &error, lldb::ClangExpressionVariableSP &result_sp, 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:", 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)
|
|
{
|
|
if (entity_up.get() == m_materializer->m_result_entity)
|
|
{
|
|
static_cast<EntityResultVariable*>(m_materializer->m_result_entity)->Dematerialize (result_sp, frame_sp, *m_map, m_process_address, frame_top, frame_bottom, error);
|
|
}
|
|
else
|
|
{
|
|
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 = NULL;
|
|
m_map = NULL;
|
|
m_process_address = LLDB_INVALID_ADDRESS;
|
|
}
|