0e4c482124
My apologies for the large patch. With the exception of ConstString.h itself it was entirely produced by sed. ConstString has exactly one const char * data member, so passing a ConstString by reference is not any more efficient than copying it by value. In both cases a single pointer is passed. But passing it by value makes it harder to accidentally return the address of a local object. (This fixes rdar://problem/48640859 for the Apple folks) Differential Revision: https://reviews.llvm.org/D59030 llvm-svn: 355553
93 lines
3.2 KiB
C++
93 lines
3.2 KiB
C++
//===-- ExpressionVariable.cpp ----------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Expression/ExpressionVariable.h"
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#include "lldb/Expression/IRExecutionUnit.h"
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#include "lldb/Target/Target.h"
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#include "lldb/Utility/Log.h"
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using namespace lldb_private;
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ExpressionVariable::~ExpressionVariable() {}
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uint8_t *ExpressionVariable::GetValueBytes() {
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const size_t byte_size = m_frozen_sp->GetByteSize();
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if (byte_size > 0) {
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if (m_frozen_sp->GetDataExtractor().GetByteSize() < byte_size) {
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m_frozen_sp->GetValue().ResizeData(byte_size);
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m_frozen_sp->GetValue().GetData(m_frozen_sp->GetDataExtractor());
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}
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return const_cast<uint8_t *>(
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m_frozen_sp->GetDataExtractor().GetDataStart());
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}
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return NULL;
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}
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PersistentExpressionState::~PersistentExpressionState() {}
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lldb::addr_t PersistentExpressionState::LookupSymbol(ConstString name) {
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SymbolMap::iterator si = m_symbol_map.find(name.GetCString());
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if (si != m_symbol_map.end())
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return si->second;
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else
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return LLDB_INVALID_ADDRESS;
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}
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void PersistentExpressionState::RegisterExecutionUnit(
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lldb::IRExecutionUnitSP &execution_unit_sp) {
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Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
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m_execution_units.insert(execution_unit_sp);
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if (log)
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log->Printf("Registering JITted Functions:\n");
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for (const IRExecutionUnit::JittedFunction &jitted_function :
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execution_unit_sp->GetJittedFunctions()) {
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if (jitted_function.m_external &&
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jitted_function.m_name != execution_unit_sp->GetFunctionName() &&
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jitted_function.m_remote_addr != LLDB_INVALID_ADDRESS) {
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m_symbol_map[jitted_function.m_name.GetCString()] =
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jitted_function.m_remote_addr;
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if (log)
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log->Printf(" Function: %s at 0x%" PRIx64 ".",
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jitted_function.m_name.GetCString(),
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jitted_function.m_remote_addr);
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}
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}
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if (log)
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log->Printf("Registering JIIted Symbols:\n");
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for (const IRExecutionUnit::JittedGlobalVariable &global_var :
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execution_unit_sp->GetJittedGlobalVariables()) {
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if (global_var.m_remote_addr != LLDB_INVALID_ADDRESS) {
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// Demangle the name before inserting it, so that lookups by the ConstStr
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// of the demangled name will find the mangled one (needed for looking up
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// metadata pointers.)
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Mangled mangler(global_var.m_name);
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mangler.GetDemangledName(lldb::eLanguageTypeUnknown);
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m_symbol_map[global_var.m_name.GetCString()] = global_var.m_remote_addr;
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if (log)
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log->Printf(" Symbol: %s at 0x%" PRIx64 ".",
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global_var.m_name.GetCString(), global_var.m_remote_addr);
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}
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}
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}
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ConstString PersistentExpressionState::GetNextPersistentVariableName(
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Target &target, llvm::StringRef Prefix) {
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llvm::SmallString<64> name;
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{
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llvm::raw_svector_ostream os(name);
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os << Prefix << target.GetNextPersistentVariableIndex();
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}
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return ConstString(name);
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}
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