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

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//===-- ClangExpressionDeclMap.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/ClangExpressionDeclMap.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "clang/AST/ASTContext.h"
#include "clang/AST/DeclarationName.h"
#include "clang/AST/Decl.h"
#include "lldb/lldb-private.h"
#include "lldb/Core/Address.h"
#include "lldb/Core/Error.h"
#include "lldb/Core/Log.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/RegisterValue.h"
#include "lldb/Core/ValueObjectConstResult.h"
#include "lldb/Core/ValueObjectVariable.h"
#include "lldb/Expression/ASTDumper.h"
#include "lldb/Expression/ClangASTSource.h"
#include "lldb/Expression/ClangPersistentVariables.h"
#include "lldb/Expression/Materializer.h"
#include "lldb/Host/Endian.h"
#include "lldb/Symbol/ClangASTContext.h"
#include "lldb/Symbol/ClangNamespaceDecl.h"
#include "lldb/Symbol/CompileUnit.h"
#include "lldb/Symbol/Function.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Symbol/SymbolContext.h"
#include "lldb/Symbol/SymbolVendor.h"
#include "lldb/Symbol/Type.h"
#include "lldb/Symbol/TypeList.h"
#include "lldb/Symbol/Variable.h"
#include "lldb/Symbol/VariableList.h"
#include "lldb/Target/ExecutionContext.h"
#include "lldb/Target/ObjCLanguageRuntime.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/RegisterContext.h"
#include "lldb/Target/StackFrame.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/Thread.h"
using namespace lldb;
using namespace lldb_private;
using namespace clang;
ClangExpressionDeclMap::ClangExpressionDeclMap (bool keep_result_in_memory, ExecutionContext &exe_ctx) :
ClangASTSource (exe_ctx.GetTargetSP()),
m_found_entities (),
m_struct_members (),
m_keep_result_in_memory (keep_result_in_memory),
m_parser_vars (),
m_struct_vars ()
{
EnableStructVars();
}
ClangExpressionDeclMap::~ClangExpressionDeclMap()
{
// Note: The model is now that the parser's AST context and all associated
// data does not vanish until the expression has been executed. This means
// that valuable lookup data (like namespaces) doesn't vanish, but
DidParse();
DisableStructVars();
}
bool
ClangExpressionDeclMap::WillParse(ExecutionContext &exe_ctx,
Materializer *materializer)
{
ClangASTMetrics::ClearLocalCounters();
EnableParserVars();
m_parser_vars->m_exe_ctx = exe_ctx;
Target *target = exe_ctx.GetTargetPtr();
if (exe_ctx.GetFramePtr())
m_parser_vars->m_sym_ctx = exe_ctx.GetFramePtr()->GetSymbolContext(lldb::eSymbolContextEverything);
else if (exe_ctx.GetThreadPtr() && exe_ctx.GetThreadPtr()->GetStackFrameAtIndex(0))
m_parser_vars->m_sym_ctx = exe_ctx.GetThreadPtr()->GetStackFrameAtIndex(0)->GetSymbolContext(lldb::eSymbolContextEverything);
else if (exe_ctx.GetProcessPtr())
{
m_parser_vars->m_sym_ctx.Clear(true);
m_parser_vars->m_sym_ctx.target_sp = exe_ctx.GetTargetSP();
}
else if (target)
{
m_parser_vars->m_sym_ctx.Clear(true);
m_parser_vars->m_sym_ctx.target_sp = exe_ctx.GetTargetSP();
}
if (target)
{
m_parser_vars->m_persistent_vars = &target->GetPersistentVariables();
if (!target->GetScratchClangASTContext())
return false;
}
m_parser_vars->m_target_info = GetTargetInfo();
m_parser_vars->m_materializer = materializer;
return true;
}
void
ClangExpressionDeclMap::DidParse()
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
if (log)
ClangASTMetrics::DumpCounters(log);
if (m_parser_vars.get())
{
for (size_t entity_index = 0, num_entities = m_found_entities.GetSize();
entity_index < num_entities;
++entity_index)
{
ClangExpressionVariableSP var_sp(m_found_entities.GetVariableAtIndex(entity_index));
if (var_sp)
{
ClangExpressionVariable::ParserVars *parser_vars = var_sp->GetParserVars(GetParserID());
if (parser_vars && parser_vars->m_lldb_value)
delete parser_vars->m_lldb_value;
var_sp->DisableParserVars(GetParserID());
}
}
for (size_t pvar_index = 0, num_pvars = m_parser_vars->m_persistent_vars->GetSize();
pvar_index < num_pvars;
++pvar_index)
{
ClangExpressionVariableSP pvar_sp(m_parser_vars->m_persistent_vars->GetVariableAtIndex(pvar_index));
if (pvar_sp)
pvar_sp->DisableParserVars(GetParserID());
}
DisableParserVars();
}
}
// Interface for IRForTarget
ClangExpressionDeclMap::TargetInfo
ClangExpressionDeclMap::GetTargetInfo()
{
assert (m_parser_vars.get());
TargetInfo ret;
ExecutionContext &exe_ctx = m_parser_vars->m_exe_ctx;
Process *process = exe_ctx.GetProcessPtr();
if (process)
{
ret.byte_order = process->GetByteOrder();
ret.address_byte_size = process->GetAddressByteSize();
}
else
{
Target *target = exe_ctx.GetTargetPtr();
if (target)
{
ret.byte_order = target->GetArchitecture().GetByteOrder();
ret.address_byte_size = target->GetArchitecture().GetAddressByteSize();
}
}
return ret;
}
bool
ClangExpressionDeclMap::AddPersistentVariable
(
const NamedDecl *decl,
const ConstString &name,
TypeFromParser parser_type,
bool is_result,
bool is_lvalue
)
{
assert (m_parser_vars.get());
if (m_parser_vars->m_materializer && is_result)
{
Error err;
ExecutionContext &exe_ctx = m_parser_vars->m_exe_ctx;
Target *target = exe_ctx.GetTargetPtr();
if (target == NULL)
return false;
ASTContext *context(target->GetScratchClangASTContext()->getASTContext());
TypeFromUser user_type(m_ast_importer->DeportType(context,
parser_type.GetASTContext(),
parser_type.GetOpaqueQualType()),
context);
uint32_t offset = m_parser_vars->m_materializer->AddResultVariable(user_type, is_lvalue, m_keep_result_in_memory, err);
m_found_entities.CreateVariable(exe_ctx.GetBestExecutionContextScope(),
name,
user_type,
m_parser_vars->m_target_info.byte_order,
m_parser_vars->m_target_info.address_byte_size);
ClangExpressionVariableSP var_sp (m_found_entities.GetVariable(name));
if (!var_sp)
return false;
var_sp->EnableParserVars(GetParserID());
ClangExpressionVariable::ParserVars *parser_vars = var_sp->GetParserVars(GetParserID());
parser_vars->m_named_decl = decl;
parser_vars->m_parser_type = parser_type;
var_sp->EnableJITVars(GetParserID());
ClangExpressionVariable::JITVars *jit_vars = var_sp->GetJITVars(GetParserID());
jit_vars->m_offset = offset;
return true;
}
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
ExecutionContext &exe_ctx = m_parser_vars->m_exe_ctx;
Target *target = exe_ctx.GetTargetPtr();
if (target == NULL)
return false;
ASTContext *context(target->GetScratchClangASTContext()->getASTContext());
TypeFromUser user_type(m_ast_importer->DeportType(context,
parser_type.GetASTContext(),
parser_type.GetOpaqueQualType()),
context);
if (!user_type.GetOpaqueQualType())
{
if (log)
log->Printf("Persistent variable's type wasn't copied successfully");
return false;
}
if (!m_parser_vars->m_target_info.IsValid())
return false;
if (!m_parser_vars->m_persistent_vars->CreatePersistentVariable (exe_ctx.GetBestExecutionContextScope (),
name,
user_type,
m_parser_vars->m_target_info.byte_order,
m_parser_vars->m_target_info.address_byte_size))
return false;
ClangExpressionVariableSP var_sp (m_parser_vars->m_persistent_vars->GetVariable(name));
if (!var_sp)
return false;
var_sp->m_frozen_sp->SetHasCompleteType();
if (is_result)
var_sp->m_flags |= ClangExpressionVariable::EVNeedsFreezeDry;
else
var_sp->m_flags |= ClangExpressionVariable::EVKeepInTarget; // explicitly-declared persistent variables should persist
if (is_lvalue)
{
var_sp->m_flags |= ClangExpressionVariable::EVIsProgramReference;
}
else
{
var_sp->m_flags |= ClangExpressionVariable::EVIsLLDBAllocated;
var_sp->m_flags |= ClangExpressionVariable::EVNeedsAllocation;
}
if (m_keep_result_in_memory)
{
var_sp->m_flags |= ClangExpressionVariable::EVKeepInTarget;
}
if (log)
log->Printf("Created persistent variable with flags 0x%hx", var_sp->m_flags);
var_sp->EnableParserVars(GetParserID());
ClangExpressionVariable::ParserVars *parser_vars = var_sp->GetParserVars(GetParserID());
parser_vars->m_named_decl = decl;
parser_vars->m_parser_type = parser_type;
return true;
}
bool
ClangExpressionDeclMap::AddValueToStruct
(
const NamedDecl *decl,
const ConstString &name,
llvm::Value *value,
size_t size,
off_t alignment
)
{
assert (m_struct_vars.get());
assert (m_parser_vars.get());
bool is_persistent_variable = false;
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
m_struct_vars->m_struct_laid_out = false;
if (m_struct_members.GetVariable(decl, GetParserID()))
return true;
ClangExpressionVariableSP var_sp (m_found_entities.GetVariable(decl, GetParserID()));
if (!var_sp)
{
var_sp = m_parser_vars->m_persistent_vars->GetVariable(decl, GetParserID());
is_persistent_variable = true;
}
if (!var_sp)
return false;
if (log)
log->Printf("Adding value for (NamedDecl*)%p [%s - %s] to the structure",
decl,
name.GetCString(),
var_sp->GetName().GetCString());
// We know entity->m_parser_vars is valid because we used a parser variable
// to find it
ClangExpressionVariable::ParserVars *parser_vars = var_sp->GetParserVars(GetParserID());
parser_vars->m_llvm_value = value;
if (ClangExpressionVariable::JITVars *jit_vars = var_sp->GetJITVars(GetParserID()))
{
// We already laid this out; do not touch
if (log)
log->Printf("Already placed at 0x%llx", (unsigned long long)jit_vars->m_offset);
}
var_sp->EnableJITVars(GetParserID());
ClangExpressionVariable::JITVars *jit_vars = var_sp->GetJITVars(GetParserID());
jit_vars->m_alignment = alignment;
jit_vars->m_size = size;
m_struct_members.AddVariable(var_sp);
if (m_parser_vars->m_materializer)
{
uint32_t offset = 0;
Error err;
if (is_persistent_variable)
{
offset = m_parser_vars->m_materializer->AddPersistentVariable(var_sp, err);
}
else
{
if (const lldb_private::Symbol *sym = parser_vars->m_lldb_sym)
offset = m_parser_vars->m_materializer->AddSymbol(*sym, err);
else if (const RegisterInfo *reg_info = var_sp->GetRegisterInfo())
offset = m_parser_vars->m_materializer->AddRegister(*reg_info, err);
else if (parser_vars->m_lldb_var)
offset = m_parser_vars->m_materializer->AddVariable(parser_vars->m_lldb_var, err);
}
if (!err.Success())
return false;
if (log)
log->Printf("Placed at 0x%llx", (unsigned long long)offset);
jit_vars->m_offset = offset; // TODO DoStructLayout() should not change this.
}
return true;
}
bool
ClangExpressionDeclMap::DoStructLayout ()
{
assert (m_struct_vars.get());
if (m_struct_vars->m_struct_laid_out)
return true;
if (!m_parser_vars->m_materializer)
return false;
m_struct_vars->m_struct_alignment = m_parser_vars->m_materializer->GetStructAlignment();
m_struct_vars->m_struct_size = m_parser_vars->m_materializer->GetStructByteSize();
m_struct_vars->m_struct_laid_out = true;
return true;
}
bool ClangExpressionDeclMap::GetStructInfo
(
uint32_t &num_elements,
size_t &size,
off_t &alignment
)
{
assert (m_struct_vars.get());
if (!m_struct_vars->m_struct_laid_out)
return false;
num_elements = m_struct_members.GetSize();
size = m_struct_vars->m_struct_size;
alignment = m_struct_vars->m_struct_alignment;
return true;
}
bool
ClangExpressionDeclMap::GetStructElement
(
const NamedDecl *&decl,
llvm::Value *&value,
off_t &offset,
ConstString &name,
uint32_t index
)
{
assert (m_struct_vars.get());
if (!m_struct_vars->m_struct_laid_out)
return false;
if (index >= m_struct_members.GetSize())
return false;
ClangExpressionVariableSP member_sp(m_struct_members.GetVariableAtIndex(index));
if (!member_sp)
return false;
ClangExpressionVariable::ParserVars *parser_vars = member_sp->GetParserVars(GetParserID());
ClangExpressionVariable::JITVars *jit_vars = member_sp->GetJITVars(GetParserID());
if (!parser_vars ||
!jit_vars ||
!member_sp->GetValueObject())
return false;
decl = parser_vars->m_named_decl;
value = parser_vars->m_llvm_value;
offset = jit_vars->m_offset;
name = member_sp->GetName();
return true;
}
bool
ClangExpressionDeclMap::GetFunctionInfo
(
const NamedDecl *decl,
uint64_t &ptr
)
{
ClangExpressionVariableSP entity_sp(m_found_entities.GetVariable(decl, GetParserID()));
if (!entity_sp)
return false;
// We know m_parser_vars is valid since we searched for the variable by
// its NamedDecl
ClangExpressionVariable::ParserVars *parser_vars = entity_sp->GetParserVars(GetParserID());
ptr = parser_vars->m_lldb_value->GetScalar().ULongLong();
return true;
}
static void
FindCodeSymbolInContext
(
const ConstString &name,
SymbolContext &sym_ctx,
SymbolContextList &sc_list
)
{
SymbolContextList temp_sc_list;
if (sym_ctx.module_sp)
sym_ctx.module_sp->FindSymbolsWithNameAndType(name, eSymbolTypeAny, temp_sc_list);
if (!sc_list.GetSize() && sym_ctx.target_sp)
sym_ctx.target_sp->GetImages().FindSymbolsWithNameAndType(name, eSymbolTypeAny, temp_sc_list);
unsigned temp_sc_list_size = temp_sc_list.GetSize();
for (unsigned i = 0; i < temp_sc_list_size; i++)
{
SymbolContext sym_ctx;
temp_sc_list.GetContextAtIndex(i, sym_ctx);
if (sym_ctx.symbol)
{
switch (sym_ctx.symbol->GetType())
{
case eSymbolTypeCode:
case eSymbolTypeResolver:
sc_list.Append(sym_ctx);
break;
default:
break;
}
}
}
}
bool
ClangExpressionDeclMap::GetFunctionAddress
(
const ConstString &name,
uint64_t &func_addr
)
{
assert (m_parser_vars.get());
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
ExecutionContext &exe_ctx = m_parser_vars->m_exe_ctx;
Target *target = exe_ctx.GetTargetPtr();
// Back out in all cases where we're not fully initialized
if (target == NULL)
return false;
if (!m_parser_vars->m_sym_ctx.target_sp)
return false;
SymbolContextList sc_list;
FindCodeSymbolInContext(name, m_parser_vars->m_sym_ctx, sc_list);
if (!sc_list.GetSize())
{
// We occasionally get debug information in which a const function is reported
// as non-const, so the mangled name is wrong. This is a hack to compensate.
if (!strncmp(name.GetCString(), "_ZN", 3) &&
strncmp(name.GetCString(), "_ZNK", 4))
{
std::string fixed_scratch("_ZNK");
fixed_scratch.append(name.GetCString() + 3);
ConstString fixed_name(fixed_scratch.c_str());
if (log)
log->Printf("Failed to find symbols given non-const name %s; trying %s", name.GetCString(), fixed_name.GetCString());
FindCodeSymbolInContext(fixed_name, m_parser_vars->m_sym_ctx, sc_list);
}
}
if (!sc_list.GetSize())
return false;
SymbolContext sym_ctx;
sc_list.GetContextAtIndex(0, sym_ctx);
const Address *func_so_addr = NULL;
bool is_indirect_function = false;
if (sym_ctx.function)
func_so_addr = &sym_ctx.function->GetAddressRange().GetBaseAddress();
else if (sym_ctx.symbol) {
func_so_addr = &sym_ctx.symbol->GetAddress();
is_indirect_function = sym_ctx.symbol->IsIndirect();
} else
return false;
if (!func_so_addr || !func_so_addr->IsValid())
return false;
func_addr = func_so_addr->GetCallableLoadAddress (target, is_indirect_function);
return true;
}
addr_t
ClangExpressionDeclMap::GetSymbolAddress (Target &target, Process *process, const ConstString &name, lldb::SymbolType symbol_type)
{
SymbolContextList sc_list;
target.GetImages().FindSymbolsWithNameAndType(name, symbol_type, sc_list);
const uint32_t num_matches = sc_list.GetSize();
addr_t symbol_load_addr = LLDB_INVALID_ADDRESS;
for (uint32_t i=0; i<num_matches && (symbol_load_addr == 0 || symbol_load_addr == LLDB_INVALID_ADDRESS); i++)
{
SymbolContext sym_ctx;
sc_list.GetContextAtIndex(i, sym_ctx);
const Address *sym_address = &sym_ctx.symbol->GetAddress();
if (!sym_address || !sym_address->IsValid())
continue;
if (sym_address)
{
switch (sym_ctx.symbol->GetType())
{
case eSymbolTypeCode:
case eSymbolTypeTrampoline:
symbol_load_addr = sym_address->GetCallableLoadAddress (&target);
break;
case eSymbolTypeResolver:
symbol_load_addr = sym_address->GetCallableLoadAddress (&target, true);
break;
case eSymbolTypeData:
case eSymbolTypeRuntime:
case eSymbolTypeVariable:
case eSymbolTypeLocal:
case eSymbolTypeParam:
case eSymbolTypeInvalid:
case eSymbolTypeAbsolute:
case eSymbolTypeException:
case eSymbolTypeSourceFile:
case eSymbolTypeHeaderFile:
case eSymbolTypeObjectFile:
case eSymbolTypeCommonBlock:
case eSymbolTypeBlock:
case eSymbolTypeVariableType:
case eSymbolTypeLineEntry:
case eSymbolTypeLineHeader:
case eSymbolTypeScopeBegin:
case eSymbolTypeScopeEnd:
case eSymbolTypeAdditional:
case eSymbolTypeCompiler:
case eSymbolTypeInstrumentation:
case eSymbolTypeUndefined:
case eSymbolTypeObjCClass:
case eSymbolTypeObjCMetaClass:
case eSymbolTypeObjCIVar:
symbol_load_addr = sym_address->GetLoadAddress (&target);
break;
}
}
}
if (symbol_load_addr == LLDB_INVALID_ADDRESS && process)
{
ObjCLanguageRuntime *runtime = process->GetObjCLanguageRuntime();
if (runtime)
{
symbol_load_addr = runtime->LookupRuntimeSymbol(name);
}
}
return symbol_load_addr;
}
addr_t
ClangExpressionDeclMap::GetSymbolAddress (const ConstString &name, lldb::SymbolType symbol_type)
{
assert (m_parser_vars.get());
if (!m_parser_vars->m_exe_ctx.GetTargetPtr())
return false;
return GetSymbolAddress(m_parser_vars->m_exe_ctx.GetTargetRef(), m_parser_vars->m_exe_ctx.GetProcessPtr(), name, symbol_type);
}
const Symbol *
ClangExpressionDeclMap::FindGlobalDataSymbol (Target &target,
const ConstString &name)
{
SymbolContextList sc_list;
target.GetImages().FindSymbolsWithNameAndType(name, eSymbolTypeAny, sc_list);
const uint32_t matches = sc_list.GetSize();
for (uint32_t i=0; i<matches; ++i)
{
SymbolContext sym_ctx;
sc_list.GetContextAtIndex(i, sym_ctx);
if (sym_ctx.symbol)
{
const Symbol *symbol = sym_ctx.symbol;
const Address *sym_address = &symbol->GetAddress();
if (sym_address && sym_address->IsValid())
{
switch (symbol->GetType())
{
case eSymbolTypeData:
case eSymbolTypeRuntime:
case eSymbolTypeAbsolute:
case eSymbolTypeObjCClass:
case eSymbolTypeObjCMetaClass:
case eSymbolTypeObjCIVar:
if (symbol->GetDemangledNameIsSynthesized())
{
// If the demangled name was synthesized, then don't use it
// for expressions. Only let the symbol match if the mangled
// named matches for these symbols.
if (symbol->GetMangled().GetMangledName() != name)
break;
}
return symbol;
case eSymbolTypeCode: // We already lookup functions elsewhere
case eSymbolTypeVariable:
case eSymbolTypeLocal:
case eSymbolTypeParam:
case eSymbolTypeTrampoline:
case eSymbolTypeInvalid:
case eSymbolTypeException:
case eSymbolTypeSourceFile:
case eSymbolTypeHeaderFile:
case eSymbolTypeObjectFile:
case eSymbolTypeCommonBlock:
case eSymbolTypeBlock:
case eSymbolTypeVariableType:
case eSymbolTypeLineEntry:
case eSymbolTypeLineHeader:
case eSymbolTypeScopeBegin:
case eSymbolTypeScopeEnd:
case eSymbolTypeAdditional:
case eSymbolTypeCompiler:
case eSymbolTypeInstrumentation:
case eSymbolTypeUndefined:
case eSymbolTypeResolver:
break;
}
}
}
}
return NULL;
}
lldb::VariableSP
ClangExpressionDeclMap::FindGlobalVariable
(
Target &target,
ModuleSP &module,
const ConstString &name,
ClangNamespaceDecl *namespace_decl,
TypeFromUser *type
)
{
VariableList vars;
if (module && namespace_decl)
module->FindGlobalVariables (name, namespace_decl, true, -1, vars);
else
target.GetImages().FindGlobalVariables(name, true, -1, vars);
if (vars.GetSize())
{
if (type)
{
for (size_t i = 0; i < vars.GetSize(); ++i)
{
VariableSP var_sp = vars.GetVariableAtIndex(i);
if (type->GetASTContext() == var_sp->GetType()->GetClangAST())
{
if (ClangASTContext::AreTypesSame(type->GetASTContext(), type->GetOpaqueQualType(), var_sp->GetType()->GetClangFullType()))
return var_sp;
}
}
}
else
{
return vars.GetVariableAtIndex(0);
}
}
return VariableSP();
}
// Interface for ClangASTSource
void
ClangExpressionDeclMap::FindExternalVisibleDecls (NameSearchContext &context)
{
assert (m_ast_context);
ClangASTMetrics::RegisterVisibleQuery();
const ConstString name(context.m_decl_name.getAsString().c_str());
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
if (GetImportInProgress())
{
if (log && log->GetVerbose())
log->Printf("Ignoring a query during an import");
return;
}
static unsigned int invocation_id = 0;
unsigned int current_id = invocation_id++;
if (log)
{
if (!context.m_decl_context)
log->Printf("ClangExpressionDeclMap::FindExternalVisibleDecls[%u] for '%s' in a NULL DeclContext", current_id, name.GetCString());
else if (const NamedDecl *context_named_decl = dyn_cast<NamedDecl>(context.m_decl_context))
log->Printf("ClangExpressionDeclMap::FindExternalVisibleDecls[%u] for '%s' in '%s'", current_id, name.GetCString(), context_named_decl->getNameAsString().c_str());
else
log->Printf("ClangExpressionDeclMap::FindExternalVisibleDecls[%u] for '%s' in a '%s'", current_id, name.GetCString(), context.m_decl_context->getDeclKindName());
}
if (const NamespaceDecl *namespace_context = dyn_cast<NamespaceDecl>(context.m_decl_context))
{
ClangASTImporter::NamespaceMapSP namespace_map = m_ast_importer->GetNamespaceMap(namespace_context);
if (log && log->GetVerbose())
log->Printf(" CEDM::FEVD[%u] Inspecting (NamespaceMap*)%p (%d entries)",
current_id,
namespace_map.get(),
(int)namespace_map->size());
if (!namespace_map)
return;
for (ClangASTImporter::NamespaceMap::iterator i = namespace_map->begin(), e = namespace_map->end();
i != e;
++i)
{
if (log)
log->Printf(" CEDM::FEVD[%u] Searching namespace %s in module %s",
current_id,
i->second.GetNamespaceDecl()->getNameAsString().c_str(),
i->first->GetFileSpec().GetFilename().GetCString());
FindExternalVisibleDecls(context,
i->first,
i->second,
current_id);
}
}
else if (isa<TranslationUnitDecl>(context.m_decl_context))
{
ClangNamespaceDecl namespace_decl;
if (log)
log->Printf(" CEDM::FEVD[%u] Searching the root namespace", current_id);
FindExternalVisibleDecls(context,
lldb::ModuleSP(),
namespace_decl,
current_id);
}
if (!context.m_found.variable)
ClangASTSource::FindExternalVisibleDecls(context);
}
void
ClangExpressionDeclMap::FindExternalVisibleDecls (NameSearchContext &context,
lldb::ModuleSP module_sp,
ClangNamespaceDecl &namespace_decl,
unsigned int current_id)
{
assert (m_ast_context);
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
SymbolContextList sc_list;
const ConstString name(context.m_decl_name.getAsString().c_str());
const char *name_unique_cstr = name.GetCString();
if (name_unique_cstr == NULL)
return;
static ConstString id_name("id");
static ConstString Class_name("Class");
if (name == id_name || name == Class_name)
return;
// Only look for functions by name out in our symbols if the function
// doesn't start with our phony prefix of '$'
Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr();
StackFrame *frame = m_parser_vars->m_exe_ctx.GetFramePtr();
if (name_unique_cstr[0] == '$' && !namespace_decl)
{
static ConstString g_lldb_class_name ("$__lldb_class");
if (name == g_lldb_class_name)
{
// Clang is looking for the type of "this"
if (frame == NULL)
return;
SymbolContext sym_ctx = frame->GetSymbolContext(lldb::eSymbolContextFunction);
if (!sym_ctx.function)
return;
// Get the block that defines the function
Block *function_block = sym_ctx.GetFunctionBlock();
if (!function_block)
return;
clang::DeclContext *decl_context = function_block->GetClangDeclContext();
if (!decl_context)
return;
clang::CXXMethodDecl *method_decl = llvm::dyn_cast<clang::CXXMethodDecl>(decl_context);
if (method_decl)
{
clang::CXXRecordDecl *class_decl = method_decl->getParent();
QualType class_qual_type(class_decl->getTypeForDecl(), 0);
TypeFromUser class_user_type (class_qual_type.getAsOpaquePtr(),
&class_decl->getASTContext());
if (log)
{
ASTDumper ast_dumper(class_qual_type);
log->Printf(" CEDM::FEVD[%u] Adding type for $__lldb_class: %s", current_id, ast_dumper.GetCString());
}
TypeFromParser class_type = CopyClassType(class_user_type, current_id);
if (!class_type.IsValid())
return;
TypeSourceInfo *type_source_info = m_ast_context->getTrivialTypeSourceInfo(QualType::getFromOpaquePtr(class_type.GetOpaqueQualType()));
if (!type_source_info)
return;
TypedefDecl *typedef_decl = TypedefDecl::Create(*m_ast_context,
m_ast_context->getTranslationUnitDecl(),
SourceLocation(),
SourceLocation(),
context.m_decl_name.getAsIdentifierInfo(),
type_source_info);
if (!typedef_decl)
return;
context.AddNamedDecl(typedef_decl);
if (method_decl->isInstance())
{
// self is a pointer to the object
QualType class_pointer_type = method_decl->getASTContext().getPointerType(class_qual_type);
TypeFromUser self_user_type(class_pointer_type.getAsOpaquePtr(),
&method_decl->getASTContext());
m_struct_vars->m_object_pointer_type = self_user_type;
}
}
else
{
// This branch will get hit if we are executing code in the context of a function that
// claims to have an object pointer (through DW_AT_object_pointer?) but is not formally a
// method of the class. In that case, just look up the "this" variable in the the current
// scope and use its type.
// FIXME: This code is formally correct, but clang doesn't currently emit DW_AT_object_pointer
// for C++ so it hasn't actually been tested.
VariableList *vars = frame->GetVariableList(false);
lldb::VariableSP this_var = vars->FindVariable(ConstString("this"));
if (this_var &&
this_var->IsInScope(frame) &&
this_var->LocationIsValidForFrame (frame))
{
Type *this_type = this_var->GetType();
if (!this_type)
return;
QualType this_qual_type = QualType::getFromOpaquePtr(this_type->GetClangFullType());
const PointerType *class_pointer_type = this_qual_type->getAs<PointerType>();
if (class_pointer_type)
{
QualType class_type = class_pointer_type->getPointeeType();
if (!class_type.getAsOpaquePtr())
return;
if (log)
{
ASTDumper ast_dumper(this_type->GetClangFullType());
log->Printf(" FEVD[%u] Adding type for $__lldb_objc_class: %s", current_id, ast_dumper.GetCString());
}
TypeFromUser class_user_type (class_type.getAsOpaquePtr(),
this_type->GetClangAST());
AddOneType(context, class_user_type, current_id);
TypeFromUser this_user_type(this_type->GetClangFullType(),
this_type->GetClangAST());
m_struct_vars->m_object_pointer_type = this_user_type;
return;
}
}
}
return;
}
static ConstString g_lldb_objc_class_name ("$__lldb_objc_class");
if (name == g_lldb_objc_class_name)
{
// Clang is looking for the type of "*self"
if (!frame)
return;
SymbolContext sym_ctx = frame->GetSymbolContext(lldb::eSymbolContextFunction);
if (!sym_ctx.function)
return;
// Get the block that defines the function
Block *function_block = sym_ctx.GetFunctionBlock();
if (!function_block)
return;
clang::DeclContext *decl_context = function_block->GetClangDeclContext();
if (!decl_context)
return;
clang::ObjCMethodDecl *method_decl = llvm::dyn_cast<clang::ObjCMethodDecl>(decl_context);
if (method_decl)
{
ObjCInterfaceDecl* self_interface = method_decl->getClassInterface();
if (!self_interface)
return;
const clang::Type *interface_type = self_interface->getTypeForDecl();
if (!interface_type)
return; // This is unlikely, but we have seen crashes where this occurred
TypeFromUser class_user_type(QualType(interface_type, 0).getAsOpaquePtr(),
&method_decl->getASTContext());
if (log)
{
ASTDumper ast_dumper(interface_type);
log->Printf(" FEVD[%u] Adding type for $__lldb_objc_class: %s", current_id, ast_dumper.GetCString());
}
AddOneType(context, class_user_type, current_id);
if (method_decl->isInstanceMethod())
{
// self is a pointer to the object
QualType class_pointer_type = method_decl->getASTContext().getObjCObjectPointerType(QualType(interface_type, 0));
TypeFromUser self_user_type(class_pointer_type.getAsOpaquePtr(),
&method_decl->getASTContext());
m_struct_vars->m_object_pointer_type = self_user_type;
}
else
{
// self is a Class pointer
QualType class_type = method_decl->getASTContext().getObjCClassType();
TypeFromUser self_user_type(class_type.getAsOpaquePtr(),
&method_decl->getASTContext());
m_struct_vars->m_object_pointer_type = self_user_type;
}
return;
}
else
{
// This branch will get hit if we are executing code in the context of a function that
// claims to have an object pointer (through DW_AT_object_pointer?) but is not formally a
// method of the class. In that case, just look up the "self" variable in the the current
// scope and use its type.
VariableList *vars = frame->GetVariableList(false);
lldb::VariableSP self_var = vars->FindVariable(ConstString("self"));
if (self_var &&
self_var->IsInScope(frame) &&
self_var->LocationIsValidForFrame (frame))
{
Type *self_type = self_var->GetType();
if (!self_type)
return;
QualType self_qual_type = QualType::getFromOpaquePtr(self_type->GetClangFullType());
if (self_qual_type->isObjCClassType())
{
return;
}
else if (self_qual_type->isObjCObjectPointerType())
{
const ObjCObjectPointerType *class_pointer_type = self_qual_type->getAs<ObjCObjectPointerType>();
QualType class_type = class_pointer_type->getPointeeType();
if (!class_type.getAsOpaquePtr())
return;
if (log)
{
ASTDumper ast_dumper(self_type->GetClangFullType());
log->Printf(" FEVD[%u] Adding type for $__lldb_objc_class: %s", current_id, ast_dumper.GetCString());
}
TypeFromUser class_user_type (class_type.getAsOpaquePtr(),
self_type->GetClangAST());
AddOneType(context, class_user_type, current_id);
TypeFromUser self_user_type(self_type->GetClangFullType(),
self_type->GetClangAST());
m_struct_vars->m_object_pointer_type = self_user_type;
return;
}
}
}
return;
}
// any other $__lldb names should be weeded out now
if (!::strncmp(name_unique_cstr, "$__lldb", sizeof("$__lldb") - 1))
return;
do
{
if (!target)
break;
ClangASTContext *scratch_clang_ast_context = target->GetScratchClangASTContext();
if (!scratch_clang_ast_context)
break;
ASTContext *scratch_ast_context = scratch_clang_ast_context->getASTContext();
if (!scratch_ast_context)
break;
TypeDecl *ptype_type_decl = m_parser_vars->m_persistent_vars->GetPersistentType(name);
if (!ptype_type_decl)
break;
Decl *parser_ptype_decl = m_ast_importer->CopyDecl(m_ast_context, scratch_ast_context, ptype_type_decl);
if (!parser_ptype_decl)
break;
TypeDecl *parser_ptype_type_decl = dyn_cast<TypeDecl>(parser_ptype_decl);
if (!parser_ptype_type_decl)
break;
if (log)
log->Printf(" CEDM::FEVD[%u] Found persistent type %s", current_id, name.GetCString());
context.AddNamedDecl(parser_ptype_type_decl);
} while (0);
ClangExpressionVariableSP pvar_sp(m_parser_vars->m_persistent_vars->GetVariable(name));
if (pvar_sp)
{
AddOneVariable(context, pvar_sp, current_id);
return;
}
const char *reg_name(&name.GetCString()[1]);
if (m_parser_vars->m_exe_ctx.GetRegisterContext())
{
const RegisterInfo *reg_info(m_parser_vars->m_exe_ctx.GetRegisterContext()->GetRegisterInfoByName(reg_name));
if (reg_info)
{
if (log)
log->Printf(" CEDM::FEVD[%u] Found register %s", current_id, reg_info->name);
AddOneRegister(context, reg_info, current_id);
}
}
}
else
{
ValueObjectSP valobj;
VariableSP var;
Error err;
if (frame && !namespace_decl)
{
valobj = frame->GetValueForVariableExpressionPath(name_unique_cstr,
eNoDynamicValues,
StackFrame::eExpressionPathOptionCheckPtrVsMember ||
StackFrame::eExpressionPathOptionsAllowDirectIVarAccess ||
StackFrame::eExpressionPathOptionsNoFragileObjcIvar ||
StackFrame::eExpressionPathOptionsNoSyntheticChildren ||
StackFrame::eExpressionPathOptionsNoSyntheticArrayRange,
var,
err);
// If we found a variable in scope, no need to pull up function names
if (err.Success() && var)
{
AddOneVariable(context, var, valobj, current_id);
context.m_found.variable = true;
return;
}
}
if (target)
{
var = FindGlobalVariable (*target,
module_sp,
name,
&namespace_decl,
NULL);
if (var)
{
valobj = ValueObjectVariable::Create(target, var);
AddOneVariable(context, var, valobj, current_id);
context.m_found.variable = true;
return;
}
}
if (!context.m_found.variable)
{
const bool include_inlines = false;
const bool append = false;
if (namespace_decl && module_sp)
{
const bool include_symbols = false;
module_sp->FindFunctions(name,
&namespace_decl,
eFunctionNameTypeBase,
include_symbols,
include_inlines,
append,
sc_list);
}
else if (target && !namespace_decl)
{
const bool include_symbols = true;
// TODO Fix FindFunctions so that it doesn't return
// instance methods for eFunctionNameTypeBase.
target->GetImages().FindFunctions(name,
eFunctionNameTypeFull,
include_symbols,
include_inlines,
append,
sc_list);
}
if (sc_list.GetSize())
{
Symbol *generic_symbol = NULL;
Symbol *non_extern_symbol = NULL;
for (uint32_t index = 0, num_indices = sc_list.GetSize();
index < num_indices;
++index)
{
SymbolContext sym_ctx;
sc_list.GetContextAtIndex(index, sym_ctx);
if (sym_ctx.function)
{
clang::DeclContext *decl_ctx = sym_ctx.function->GetClangDeclContext();
if (!decl_ctx)
continue;
// Filter out class/instance methods.
if (dyn_cast<clang::ObjCMethodDecl>(decl_ctx))
continue;
if (dyn_cast<clang::CXXMethodDecl>(decl_ctx))
continue;
AddOneFunction(context, sym_ctx.function, NULL, current_id);
context.m_found.function_with_type_info = true;
context.m_found.function = true;
}
else if (sym_ctx.symbol)
{
if (sym_ctx.symbol->IsExternal())
generic_symbol = sym_ctx.symbol;
else
non_extern_symbol = sym_ctx.symbol;
}
}
if (!context.m_found.function_with_type_info)
{
if (generic_symbol)
{
AddOneFunction (context, NULL, generic_symbol, current_id);
context.m_found.function = true;
}
else if (non_extern_symbol)
{
AddOneFunction (context, NULL, non_extern_symbol, current_id);
context.m_found.function = true;
}
}
}
if (target && !context.m_found.variable && !namespace_decl)
{
// We couldn't find a non-symbol variable for this. Now we'll hunt for a generic
// data symbol, and -- if it is found -- treat it as a variable.
const Symbol *data_symbol = FindGlobalDataSymbol(*target, name);
if (data_symbol)
{
AddOneGenericVariable(context, *data_symbol, current_id);
context.m_found.variable = true;
}
}
}
}
}
static clang_type_t
MaybePromoteToBlockPointerType
(
ASTContext *ast_context,
clang_type_t candidate_type
)
{
if (!candidate_type)
return candidate_type;
QualType candidate_qual_type = QualType::getFromOpaquePtr(candidate_type);
const PointerType *candidate_pointer_type = dyn_cast<PointerType>(candidate_qual_type);
if (!candidate_pointer_type)
return candidate_type;
QualType pointee_qual_type = candidate_pointer_type->getPointeeType();
const RecordType *pointee_record_type = dyn_cast<RecordType>(pointee_qual_type);
if (!pointee_record_type)
return candidate_type;
RecordDecl *pointee_record_decl = pointee_record_type->getDecl();
if (!pointee_record_decl->isRecord())
return candidate_type;
if (!pointee_record_decl->getName().startswith(llvm::StringRef("__block_literal_")))
return candidate_type;
QualType generic_function_type = ast_context->getFunctionNoProtoType(ast_context->UnknownAnyTy);
QualType block_pointer_type = ast_context->getBlockPointerType(generic_function_type);
return block_pointer_type.getAsOpaquePtr();
}
Value *
ClangExpressionDeclMap::GetVariableValue
(
VariableSP &var,
ASTContext *parser_ast_context,
TypeFromUser *user_type,
TypeFromParser *parser_type
)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
Type *var_type = var->GetType();
if (!var_type)
{
if (log)
log->PutCString("Skipped a definition because it has no type");
return NULL;
}
clang_type_t var_opaque_type = var_type->GetClangFullType();
if (!var_opaque_type)
{
if (log)
log->PutCString("Skipped a definition because it has no Clang type");
return NULL;
}
ASTContext *ast = var_type->GetClangASTContext().getASTContext();
if (!ast)
{
if (log)
log->PutCString("There is no AST context for the current execution context");
return NULL;
}
// commented out because of <rdar://problem/11024417>
//var_opaque_type = MaybePromoteToBlockPointerType (ast, var_opaque_type);
DWARFExpression &var_location_expr = var->LocationExpression();
std::unique_ptr<Value> var_location(new Value);
lldb::addr_t loclist_base_load_addr = LLDB_INVALID_ADDRESS;
Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr();
if (var_location_expr.IsLocationList())
{
SymbolContext var_sc;
var->CalculateSymbolContext (&var_sc);
loclist_base_load_addr = var_sc.function->GetAddressRange().GetBaseAddress().GetLoadAddress (target);
}
Error err;
if (var->GetLocationIsConstantValueData())
{
DataExtractor const_value_extractor;
if (var_location_expr.GetExpressionData(const_value_extractor))
{
var_location->operator=(Value(const_value_extractor.GetDataStart(), const_value_extractor.GetByteSize()));
var_location->SetValueType(Value::eValueTypeHostAddress);
}
else
{
if (log)
log->Printf("Error evaluating constant variable: %s", err.AsCString());
return NULL;
}
}
void *type_to_use = NULL;
if (parser_ast_context)
{
type_to_use = GuardedCopyType(parser_ast_context, ast, var_opaque_type);
if (!type_to_use)
{
if (log)
log->Printf("Couldn't copy a variable's type into the parser's AST context");
return NULL;
}
if (parser_type)
*parser_type = TypeFromParser(type_to_use, parser_ast_context);
}
else
type_to_use = var_opaque_type;
if (var_location.get()->GetContextType() == Value::eContextTypeInvalid)
var_location.get()->SetContext(Value::eContextTypeClangType, type_to_use);
if (var_location.get()->GetValueType() == Value::eValueTypeFileAddress)
{
SymbolContext var_sc;
var->CalculateSymbolContext(&var_sc);
if (!var_sc.module_sp)
return NULL;
ObjectFile *object_file = var_sc.module_sp->GetObjectFile();
if (!object_file)
return NULL;
Address so_addr(var_location->GetScalar().ULongLong(), object_file->GetSectionList());
lldb::addr_t load_addr = so_addr.GetLoadAddress(target);
if (load_addr != LLDB_INVALID_ADDRESS)
{
var_location->GetScalar() = load_addr;
var_location->SetValueType(Value::eValueTypeLoadAddress);
}
}
if (user_type)
*user_type = TypeFromUser(var_opaque_type, ast);
return var_location.release();
}
void
ClangExpressionDeclMap::AddOneVariable (NameSearchContext &context, VariableSP var, ValueObjectSP valobj, unsigned int current_id)
{
assert (m_parser_vars.get());
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
TypeFromUser ut;
TypeFromParser pt;
Value *var_location = GetVariableValue (var,
m_ast_context,
&ut,
&pt);
clang::QualType parser_opaque_type = QualType::getFromOpaquePtr(pt.GetOpaqueQualType());
if (parser_opaque_type.isNull())
return;
if (const clang::Type *parser_type = parser_opaque_type.getTypePtr())
{
if (const TagType *tag_type = dyn_cast<TagType>(parser_type))
CompleteType(tag_type->getDecl());
}
if (!var_location)
return;
NamedDecl *var_decl;
bool is_reference = ClangASTContext::IsReferenceType(pt.GetOpaqueQualType());
if (is_reference)
var_decl = context.AddVarDecl(pt.GetOpaqueQualType());
else
var_decl = context.AddVarDecl(ClangASTContext::CreateLValueReferenceType(pt.GetASTContext(), pt.GetOpaqueQualType()));
std::string decl_name(context.m_decl_name.getAsString());
ConstString entity_name(decl_name.c_str());
ClangExpressionVariableSP entity(m_found_entities.CreateVariable (valobj));
assert (entity.get());
entity->EnableParserVars(GetParserID());
ClangExpressionVariable::ParserVars *parser_vars = entity->GetParserVars(GetParserID());
parser_vars->m_parser_type = pt;
parser_vars->m_named_decl = var_decl;
parser_vars->m_llvm_value = NULL;
parser_vars->m_lldb_value = var_location;
parser_vars->m_lldb_var = var;
if (is_reference)
entity->m_flags |= ClangExpressionVariable::EVTypeIsReference;
if (log)
{
ASTDumper orig_dumper(ut.GetOpaqueQualType());
ASTDumper ast_dumper(var_decl);
log->Printf(" CEDM::FEVD[%u] Found variable %s, returned %s (original %s)", current_id, decl_name.c_str(), ast_dumper.GetCString(), orig_dumper.GetCString());
}
}
void
ClangExpressionDeclMap::AddOneVariable(NameSearchContext &context,
ClangExpressionVariableSP &pvar_sp,
unsigned int current_id)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
TypeFromUser user_type (pvar_sp->GetTypeFromUser());
TypeFromParser parser_type (GuardedCopyType(m_ast_context,
user_type.GetASTContext(),
user_type.GetOpaqueQualType()),
m_ast_context);
if (!parser_type.GetOpaqueQualType())
{
if (log)
log->Printf(" CEDM::FEVD[%u] Couldn't import type for pvar %s", current_id, pvar_sp->GetName().GetCString());
return;
}
NamedDecl *var_decl = context.AddVarDecl(ClangASTContext::CreateLValueReferenceType(parser_type.GetASTContext(), parser_type.GetOpaqueQualType()));
pvar_sp->EnableParserVars(GetParserID());
ClangExpressionVariable::ParserVars *parser_vars = pvar_sp->GetParserVars(GetParserID());
parser_vars->m_parser_type = parser_type;
parser_vars->m_named_decl = var_decl;
parser_vars->m_llvm_value = NULL;
parser_vars->m_lldb_value = NULL;
if (log)
{
ASTDumper ast_dumper(var_decl);
log->Printf(" CEDM::FEVD[%u] Added pvar %s, returned %s", current_id, pvar_sp->GetName().GetCString(), ast_dumper.GetCString());
}
}
void
ClangExpressionDeclMap::AddOneGenericVariable(NameSearchContext &context,
const Symbol &symbol,
unsigned int current_id)
{
assert(m_parser_vars.get());
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr();
if (target == NULL)
return;
ASTContext *scratch_ast_context = target->GetScratchClangASTContext()->getASTContext();
TypeFromUser user_type (ClangASTContext::CreateLValueReferenceType(scratch_ast_context, ClangASTContext::GetVoidPtrType(scratch_ast_context, false)),
scratch_ast_context);
TypeFromParser parser_type (ClangASTContext::CreateLValueReferenceType(m_ast_context, ClangASTContext::GetVoidPtrType(m_ast_context, false)),
m_ast_context);
NamedDecl *var_decl = context.AddVarDecl(parser_type.GetOpaqueQualType());
std::string decl_name(context.m_decl_name.getAsString());
ConstString entity_name(decl_name.c_str());
ClangExpressionVariableSP entity(m_found_entities.CreateVariable (m_parser_vars->m_exe_ctx.GetBestExecutionContextScope (),
entity_name,
user_type,
m_parser_vars->m_target_info.byte_order,
m_parser_vars->m_target_info.address_byte_size));
assert (entity.get());
std::unique_ptr<Value> symbol_location(new Value);
const Address &symbol_address = symbol.GetAddress();
lldb::addr_t symbol_load_addr = symbol_address.GetLoadAddress(target);
symbol_location->SetContext(Value::eContextTypeClangType, user_type.GetOpaqueQualType());
symbol_location->GetScalar() = symbol_load_addr;
symbol_location->SetValueType(Value::eValueTypeLoadAddress);
entity->EnableParserVars(GetParserID());
ClangExpressionVariable::ParserVars *parser_vars = entity->GetParserVars(GetParserID());
parser_vars->m_parser_type = parser_type;
parser_vars->m_named_decl = var_decl;
parser_vars->m_llvm_value = NULL;
parser_vars->m_lldb_value = symbol_location.release();
parser_vars->m_lldb_sym = &symbol;
if (log)
{
ASTDumper ast_dumper(var_decl);
log->Printf(" CEDM::FEVD[%u] Found variable %s, returned %s", current_id, decl_name.c_str(), ast_dumper.GetCString());
}
}
bool
ClangExpressionDeclMap::ResolveUnknownTypes()
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr();
ASTContext *scratch_ast_context = target->GetScratchClangASTContext()->getASTContext();
for (size_t index = 0, num_entities = m_found_entities.GetSize();
index < num_entities;
++index)
{
ClangExpressionVariableSP entity = m_found_entities.GetVariableAtIndex(index);
ClangExpressionVariable::ParserVars *parser_vars = entity->GetParserVars(GetParserID());
if (entity->m_flags & ClangExpressionVariable::EVUnknownType)
{
const NamedDecl *named_decl = parser_vars->m_named_decl;
const VarDecl *var_decl = dyn_cast<VarDecl>(named_decl);
if (!var_decl)
{
if (log)
log->Printf("Entity of unknown type does not have a VarDecl");
return false;
}
if (log)
{
ASTDumper ast_dumper(const_cast<VarDecl*>(var_decl));
log->Printf("Variable of unknown type now has Decl %s", ast_dumper.GetCString());
}
QualType var_type = var_decl->getType();
TypeFromParser parser_type(var_type.getAsOpaquePtr(), &var_decl->getASTContext());
lldb::clang_type_t copied_type = m_ast_importer->CopyType(scratch_ast_context, &var_decl->getASTContext(), var_type.getAsOpaquePtr());
if (!copied_type)
{
if (log)
log->Printf("ClangExpressionDeclMap::ResolveUnknownType - Couldn't import the type for a variable");
return (bool) lldb::ClangExpressionVariableSP();
}
TypeFromUser user_type(copied_type, scratch_ast_context);
parser_vars->m_lldb_value->SetContext(Value::eContextTypeClangType, user_type.GetOpaqueQualType());
parser_vars->m_parser_type = parser_type;
entity->SetClangAST(user_type.GetASTContext());
entity->SetClangType(user_type.GetOpaqueQualType());
entity->m_flags &= ~(ClangExpressionVariable::EVUnknownType);
}
}
return true;
}
void
ClangExpressionDeclMap::AddOneRegister (NameSearchContext &context,
const RegisterInfo *reg_info,
unsigned int current_id)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
void *ast_type = ClangASTContext::GetBuiltinTypeForEncodingAndBitSize(m_ast_context,
reg_info->encoding,
reg_info->byte_size * 8);
if (!ast_type)
{
if (log)
log->Printf(" Tried to add a type for %s, but couldn't get one", context.m_decl_name.getAsString().c_str());
return;
}
TypeFromParser parser_type (ast_type,
m_ast_context);
NamedDecl *var_decl = context.AddVarDecl(parser_type.GetOpaqueQualType());
ClangExpressionVariableSP entity(m_found_entities.CreateVariable (m_parser_vars->m_exe_ctx.GetBestExecutionContextScope(),
m_parser_vars->m_target_info.byte_order,
m_parser_vars->m_target_info.address_byte_size));
assert (entity.get());
std::string decl_name(context.m_decl_name.getAsString());
entity->SetName (ConstString (decl_name.c_str()));
entity->SetRegisterInfo (reg_info);
entity->EnableParserVars(GetParserID());
ClangExpressionVariable::ParserVars *parser_vars = entity->GetParserVars(GetParserID());
parser_vars->m_parser_type = parser_type;
parser_vars->m_named_decl = var_decl;
parser_vars->m_llvm_value = NULL;
parser_vars->m_lldb_value = NULL;
entity->m_flags |= ClangExpressionVariable::EVBareRegister;
if (log)
{
ASTDumper ast_dumper(var_decl);
log->Printf(" CEDM::FEVD[%d] Added register %s, returned %s", current_id, context.m_decl_name.getAsString().c_str(), ast_dumper.GetCString());
}
}
void
ClangExpressionDeclMap::AddOneFunction (NameSearchContext &context,
Function* fun,
Symbol* symbol,
unsigned int current_id)
{
assert (m_parser_vars.get());
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
NamedDecl *fun_decl = NULL;
std::unique_ptr<Value> fun_location(new Value);
const Address *fun_address = NULL;
// only valid for Functions, not for Symbols
void *fun_opaque_type = NULL;
ASTContext *fun_ast_context = NULL;
bool is_indirect_function = false;
if (fun)
{
Type *fun_type = fun->GetType();
if (!fun_type)
{
if (log)
log->PutCString(" Skipped a function because it has no type");
return;
}
fun_opaque_type = fun_type->GetClangFullType();
if (!fun_opaque_type)
{
if (log)
log->PutCString(" Skipped a function because it has no Clang type");
return;
}
fun_address = &fun->GetAddressRange().GetBaseAddress();
fun_ast_context = fun_type->GetClangASTContext().getASTContext();
void *copied_type = GuardedCopyType(m_ast_context, fun_ast_context, fun_opaque_type);
if (copied_type)
{
fun_decl = context.AddFunDecl(copied_type);
if (!fun_decl)
{
if (log)
{
log->Printf (" Failed to create a function decl for '%s' {0x%8.8" PRIx64 "}",
fun_type->GetName().GetCString(),
fun_type->GetID());
}
return;
}
}
else
{
// We failed to copy the type we found
if (log)
{
log->Printf (" Failed to import the function type '%s' {0x%8.8" PRIx64 "} into the expression parser AST contenxt",
fun_type->GetName().GetCString(),
fun_type->GetID());
}
return;
}
}
else if (symbol)
{
fun_address = &symbol->GetAddress();
fun_decl = context.AddGenericFunDecl();
is_indirect_function = symbol->IsIndirect();
}
else
{
if (log)
log->PutCString(" AddOneFunction called with no function and no symbol");
return;
}
Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr();
lldb::addr_t load_addr = fun_address->GetCallableLoadAddress(target, is_indirect_function);
if (load_addr != LLDB_INVALID_ADDRESS)
{
fun_location->SetValueType(Value::eValueTypeLoadAddress);
fun_location->GetScalar() = load_addr;
}
else
{
// We have to try finding a file address.
lldb::addr_t file_addr = fun_address->GetFileAddress();
fun_location->SetValueType(Value::eValueTypeFileAddress);
fun_location->GetScalar() = file_addr;
}
ClangExpressionVariableSP entity(m_found_entities.CreateVariable (m_parser_vars->m_exe_ctx.GetBestExecutionContextScope (),
m_parser_vars->m_target_info.byte_order,
m_parser_vars->m_target_info.address_byte_size));
assert (entity.get());
std::string decl_name(context.m_decl_name.getAsString());
entity->SetName(ConstString(decl_name.c_str()));
entity->SetClangType (fun_opaque_type);
entity->SetClangAST (fun_ast_context);
entity->EnableParserVars(GetParserID());
ClangExpressionVariable::ParserVars *parser_vars = entity->GetParserVars(GetParserID());
parser_vars->m_named_decl = fun_decl;
parser_vars->m_llvm_value = NULL;
parser_vars->m_lldb_value = fun_location.release();
if (log)
{
ASTDumper ast_dumper(fun_decl);
StreamString ss;
fun_address->Dump(&ss, m_parser_vars->m_exe_ctx.GetBestExecutionContextScope(), Address::DumpStyleResolvedDescription);
log->Printf(" CEDM::FEVD[%u] Found %s function %s (description %s), returned %s",
current_id,
(fun ? "specific" : "generic"),
decl_name.c_str(),
ss.GetData(),
ast_dumper.GetCString());
}
}
TypeFromParser
ClangExpressionDeclMap::CopyClassType(TypeFromUser &ut,
unsigned int current_id)
{
ASTContext *parser_ast_context = m_ast_context;
ASTContext *user_ast_context = ut.GetASTContext();
void *copied_type = GuardedCopyType(parser_ast_context, user_ast_context, ut.GetOpaqueQualType());
if (!copied_type)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
if (log)
log->Printf("ClangExpressionDeclMap::CopyClassType - Couldn't import the type");
return TypeFromParser();
}
if (ClangASTContext::IsAggregateType(copied_type) && ClangASTContext::GetCompleteType (parser_ast_context, copied_type))
{
void *args[1];
args[0] = ClangASTContext::GetVoidPtrType(parser_ast_context, false);
clang_type_t method_type = ClangASTContext::CreateFunctionType (parser_ast_context,
ClangASTContext::GetBuiltInType_void(parser_ast_context),
args,
1,
false,
ClangASTContext::GetTypeQualifiers(copied_type));
const bool is_virtual = false;
const bool is_static = false;
const bool is_inline = false;
const bool is_explicit = false;
const bool is_attr_used = true;
const bool is_artificial = false;
ClangASTContext::AddMethodToCXXRecordType (parser_ast_context,
copied_type,
"$__lldb_expr",
method_type,
lldb::eAccessPublic,
is_virtual,
is_static,
is_inline,
is_explicit,
is_attr_used,
is_artificial);
}
return TypeFromParser(copied_type, parser_ast_context);
}
void
ClangExpressionDeclMap::AddOneType(NameSearchContext &context,
TypeFromUser &ut,
unsigned int current_id)
{
ASTContext *parser_ast_context = m_ast_context;
ASTContext *user_ast_context = ut.GetASTContext();
void *copied_type = GuardedCopyType(parser_ast_context, user_ast_context, ut.GetOpaqueQualType());
if (!copied_type)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
if (log)
log->Printf("ClangExpressionDeclMap::AddOneType - Couldn't import the type");
return;
}
context.AddTypeDecl(copied_type);
}
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