41714c959d
LLDB should guarantee that the strings returned by SBAPI methods live forever. I went through every method that returns a string and made sure that it was added to the ConstString StringPool before returning if it wasn't obvious that it was already doing so. I've also updated the docs to document this behavior. Differential Revision: https://reviews.llvm.org/D150804
680 lines
18 KiB
C++
680 lines
18 KiB
C++
//===-- SBModule.cpp ------------------------------------------------------===//
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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/API/SBModule.h"
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#include "lldb/API/SBAddress.h"
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#include "lldb/API/SBFileSpec.h"
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#include "lldb/API/SBModuleSpec.h"
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#include "lldb/API/SBProcess.h"
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#include "lldb/API/SBStream.h"
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#include "lldb/API/SBSymbolContextList.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/Section.h"
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#include "lldb/Core/ValueObjectList.h"
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#include "lldb/Core/ValueObjectVariable.h"
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#include "lldb/Symbol/ObjectFile.h"
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#include "lldb/Symbol/SymbolFile.h"
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#include "lldb/Symbol/Symtab.h"
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#include "lldb/Symbol/TypeSystem.h"
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#include "lldb/Symbol/VariableList.h"
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#include "lldb/Target/Target.h"
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#include "lldb/Utility/Instrumentation.h"
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#include "lldb/Utility/StreamString.h"
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using namespace lldb;
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using namespace lldb_private;
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SBModule::SBModule() { LLDB_INSTRUMENT_VA(this); }
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SBModule::SBModule(const lldb::ModuleSP &module_sp) : m_opaque_sp(module_sp) {}
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SBModule::SBModule(const SBModuleSpec &module_spec) {
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LLDB_INSTRUMENT_VA(this, module_spec);
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ModuleSP module_sp;
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Status error = ModuleList::GetSharedModule(
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*module_spec.m_opaque_up, module_sp, nullptr, nullptr, nullptr);
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if (module_sp)
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SetSP(module_sp);
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}
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SBModule::SBModule(const SBModule &rhs) : m_opaque_sp(rhs.m_opaque_sp) {
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LLDB_INSTRUMENT_VA(this, rhs);
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}
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SBModule::SBModule(lldb::SBProcess &process, lldb::addr_t header_addr) {
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LLDB_INSTRUMENT_VA(this, process, header_addr);
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ProcessSP process_sp(process.GetSP());
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if (process_sp) {
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m_opaque_sp = process_sp->ReadModuleFromMemory(FileSpec(), header_addr);
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if (m_opaque_sp) {
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Target &target = process_sp->GetTarget();
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bool changed = false;
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m_opaque_sp->SetLoadAddress(target, 0, true, changed);
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target.GetImages().Append(m_opaque_sp);
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}
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}
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}
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const SBModule &SBModule::operator=(const SBModule &rhs) {
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LLDB_INSTRUMENT_VA(this, rhs);
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if (this != &rhs)
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m_opaque_sp = rhs.m_opaque_sp;
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return *this;
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}
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SBModule::~SBModule() = default;
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bool SBModule::IsValid() const {
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LLDB_INSTRUMENT_VA(this);
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return this->operator bool();
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}
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SBModule::operator bool() const {
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LLDB_INSTRUMENT_VA(this);
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return m_opaque_sp.get() != nullptr;
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}
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void SBModule::Clear() {
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LLDB_INSTRUMENT_VA(this);
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m_opaque_sp.reset();
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}
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bool SBModule::IsFileBacked() const {
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LLDB_INSTRUMENT_VA(this);
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ModuleSP module_sp(GetSP());
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if (!module_sp)
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return false;
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ObjectFile *obj_file = module_sp->GetObjectFile();
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if (!obj_file)
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return false;
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return !obj_file->IsInMemory();
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}
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SBFileSpec SBModule::GetFileSpec() const {
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LLDB_INSTRUMENT_VA(this);
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SBFileSpec file_spec;
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ModuleSP module_sp(GetSP());
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if (module_sp)
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file_spec.SetFileSpec(module_sp->GetFileSpec());
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return file_spec;
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}
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lldb::SBFileSpec SBModule::GetPlatformFileSpec() const {
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LLDB_INSTRUMENT_VA(this);
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SBFileSpec file_spec;
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ModuleSP module_sp(GetSP());
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if (module_sp)
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file_spec.SetFileSpec(module_sp->GetPlatformFileSpec());
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return file_spec;
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}
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bool SBModule::SetPlatformFileSpec(const lldb::SBFileSpec &platform_file) {
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LLDB_INSTRUMENT_VA(this, platform_file);
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bool result = false;
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ModuleSP module_sp(GetSP());
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if (module_sp) {
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module_sp->SetPlatformFileSpec(*platform_file);
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result = true;
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}
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return result;
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}
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lldb::SBFileSpec SBModule::GetRemoteInstallFileSpec() {
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LLDB_INSTRUMENT_VA(this);
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SBFileSpec sb_file_spec;
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ModuleSP module_sp(GetSP());
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if (module_sp)
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sb_file_spec.SetFileSpec(module_sp->GetRemoteInstallFileSpec());
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return sb_file_spec;
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}
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bool SBModule::SetRemoteInstallFileSpec(lldb::SBFileSpec &file) {
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LLDB_INSTRUMENT_VA(this, file);
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ModuleSP module_sp(GetSP());
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if (module_sp) {
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module_sp->SetRemoteInstallFileSpec(file.ref());
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return true;
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}
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return false;
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}
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const uint8_t *SBModule::GetUUIDBytes() const {
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LLDB_INSTRUMENT_VA(this);
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const uint8_t *uuid_bytes = nullptr;
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ModuleSP module_sp(GetSP());
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if (module_sp)
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uuid_bytes = module_sp->GetUUID().GetBytes().data();
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return uuid_bytes;
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}
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const char *SBModule::GetUUIDString() const {
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LLDB_INSTRUMENT_VA(this);
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ModuleSP module_sp(GetSP());
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if (!module_sp)
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return nullptr;
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// We are going to return a "const char *" value through the public API, so
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// we need to constify it so it gets added permanently the string pool and
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// then we don't need to worry about the lifetime of the string as it will
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// never go away once it has been put into the ConstString string pool
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const char *uuid_cstr =
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ConstString(module_sp->GetUUID().GetAsString()).GetCString();
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// Note: SBModule::GetUUIDString's expected behavior is to return nullptr if
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// the string we get is empty, so we must perform this check before returning.
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if (uuid_cstr && uuid_cstr[0])
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return uuid_cstr;
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return nullptr;
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}
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bool SBModule::operator==(const SBModule &rhs) const {
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LLDB_INSTRUMENT_VA(this, rhs);
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if (m_opaque_sp)
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return m_opaque_sp.get() == rhs.m_opaque_sp.get();
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return false;
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}
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bool SBModule::operator!=(const SBModule &rhs) const {
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LLDB_INSTRUMENT_VA(this, rhs);
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if (m_opaque_sp)
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return m_opaque_sp.get() != rhs.m_opaque_sp.get();
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return false;
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}
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ModuleSP SBModule::GetSP() const { return m_opaque_sp; }
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void SBModule::SetSP(const ModuleSP &module_sp) { m_opaque_sp = module_sp; }
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SBAddress SBModule::ResolveFileAddress(lldb::addr_t vm_addr) {
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LLDB_INSTRUMENT_VA(this, vm_addr);
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lldb::SBAddress sb_addr;
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ModuleSP module_sp(GetSP());
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if (module_sp) {
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Address addr;
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if (module_sp->ResolveFileAddress(vm_addr, addr))
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sb_addr.ref() = addr;
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}
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return sb_addr;
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}
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SBSymbolContext
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SBModule::ResolveSymbolContextForAddress(const SBAddress &addr,
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uint32_t resolve_scope) {
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LLDB_INSTRUMENT_VA(this, addr, resolve_scope);
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SBSymbolContext sb_sc;
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ModuleSP module_sp(GetSP());
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SymbolContextItem scope = static_cast<SymbolContextItem>(resolve_scope);
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if (module_sp && addr.IsValid())
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module_sp->ResolveSymbolContextForAddress(addr.ref(), scope, *sb_sc);
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return sb_sc;
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}
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bool SBModule::GetDescription(SBStream &description) {
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LLDB_INSTRUMENT_VA(this, description);
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Stream &strm = description.ref();
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ModuleSP module_sp(GetSP());
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if (module_sp) {
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module_sp->GetDescription(strm.AsRawOstream());
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} else
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strm.PutCString("No value");
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return true;
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}
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uint32_t SBModule::GetNumCompileUnits() {
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LLDB_INSTRUMENT_VA(this);
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ModuleSP module_sp(GetSP());
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if (module_sp) {
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return module_sp->GetNumCompileUnits();
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}
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return 0;
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}
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SBCompileUnit SBModule::GetCompileUnitAtIndex(uint32_t index) {
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LLDB_INSTRUMENT_VA(this, index);
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SBCompileUnit sb_cu;
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ModuleSP module_sp(GetSP());
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if (module_sp) {
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CompUnitSP cu_sp = module_sp->GetCompileUnitAtIndex(index);
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sb_cu.reset(cu_sp.get());
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}
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return sb_cu;
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}
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SBSymbolContextList SBModule::FindCompileUnits(const SBFileSpec &sb_file_spec) {
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LLDB_INSTRUMENT_VA(this, sb_file_spec);
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SBSymbolContextList sb_sc_list;
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const ModuleSP module_sp(GetSP());
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if (sb_file_spec.IsValid() && module_sp) {
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module_sp->FindCompileUnits(*sb_file_spec, *sb_sc_list);
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}
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return sb_sc_list;
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}
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static Symtab *GetUnifiedSymbolTable(const lldb::ModuleSP &module_sp) {
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if (module_sp)
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return module_sp->GetSymtab();
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return nullptr;
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}
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size_t SBModule::GetNumSymbols() {
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LLDB_INSTRUMENT_VA(this);
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ModuleSP module_sp(GetSP());
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if (Symtab *symtab = GetUnifiedSymbolTable(module_sp))
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return symtab->GetNumSymbols();
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return 0;
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}
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SBSymbol SBModule::GetSymbolAtIndex(size_t idx) {
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LLDB_INSTRUMENT_VA(this, idx);
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SBSymbol sb_symbol;
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ModuleSP module_sp(GetSP());
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Symtab *symtab = GetUnifiedSymbolTable(module_sp);
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if (symtab)
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sb_symbol.SetSymbol(symtab->SymbolAtIndex(idx));
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return sb_symbol;
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}
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lldb::SBSymbol SBModule::FindSymbol(const char *name,
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lldb::SymbolType symbol_type) {
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LLDB_INSTRUMENT_VA(this, name, symbol_type);
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SBSymbol sb_symbol;
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if (name && name[0]) {
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ModuleSP module_sp(GetSP());
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Symtab *symtab = GetUnifiedSymbolTable(module_sp);
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if (symtab)
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sb_symbol.SetSymbol(symtab->FindFirstSymbolWithNameAndType(
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ConstString(name), symbol_type, Symtab::eDebugAny,
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Symtab::eVisibilityAny));
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}
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return sb_symbol;
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}
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lldb::SBSymbolContextList SBModule::FindSymbols(const char *name,
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lldb::SymbolType symbol_type) {
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LLDB_INSTRUMENT_VA(this, name, symbol_type);
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SBSymbolContextList sb_sc_list;
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if (name && name[0]) {
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ModuleSP module_sp(GetSP());
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Symtab *symtab = GetUnifiedSymbolTable(module_sp);
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if (symtab) {
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std::vector<uint32_t> matching_symbol_indexes;
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symtab->FindAllSymbolsWithNameAndType(ConstString(name), symbol_type,
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matching_symbol_indexes);
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const size_t num_matches = matching_symbol_indexes.size();
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if (num_matches) {
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SymbolContext sc;
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sc.module_sp = module_sp;
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SymbolContextList &sc_list = *sb_sc_list;
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for (size_t i = 0; i < num_matches; ++i) {
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sc.symbol = symtab->SymbolAtIndex(matching_symbol_indexes[i]);
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if (sc.symbol)
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sc_list.Append(sc);
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}
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}
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}
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}
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return sb_sc_list;
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}
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size_t SBModule::GetNumSections() {
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LLDB_INSTRUMENT_VA(this);
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ModuleSP module_sp(GetSP());
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if (module_sp) {
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// Give the symbol vendor a chance to add to the unified section list.
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module_sp->GetSymbolFile();
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SectionList *section_list = module_sp->GetSectionList();
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if (section_list)
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return section_list->GetSize();
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}
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return 0;
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}
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SBSection SBModule::GetSectionAtIndex(size_t idx) {
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LLDB_INSTRUMENT_VA(this, idx);
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SBSection sb_section;
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ModuleSP module_sp(GetSP());
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if (module_sp) {
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// Give the symbol vendor a chance to add to the unified section list.
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module_sp->GetSymbolFile();
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SectionList *section_list = module_sp->GetSectionList();
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if (section_list)
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sb_section.SetSP(section_list->GetSectionAtIndex(idx));
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}
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return sb_section;
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}
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lldb::SBSymbolContextList SBModule::FindFunctions(const char *name,
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uint32_t name_type_mask) {
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LLDB_INSTRUMENT_VA(this, name, name_type_mask);
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lldb::SBSymbolContextList sb_sc_list;
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ModuleSP module_sp(GetSP());
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if (name && module_sp) {
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ModuleFunctionSearchOptions function_options;
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function_options.include_symbols = true;
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function_options.include_inlines = true;
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FunctionNameType type = static_cast<FunctionNameType>(name_type_mask);
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module_sp->FindFunctions(ConstString(name), CompilerDeclContext(), type,
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function_options, *sb_sc_list);
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}
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return sb_sc_list;
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}
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SBValueList SBModule::FindGlobalVariables(SBTarget &target, const char *name,
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uint32_t max_matches) {
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LLDB_INSTRUMENT_VA(this, target, name, max_matches);
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SBValueList sb_value_list;
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ModuleSP module_sp(GetSP());
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if (name && module_sp) {
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VariableList variable_list;
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module_sp->FindGlobalVariables(ConstString(name), CompilerDeclContext(),
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max_matches, variable_list);
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for (const VariableSP &var_sp : variable_list) {
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lldb::ValueObjectSP valobj_sp;
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TargetSP target_sp(target.GetSP());
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valobj_sp = ValueObjectVariable::Create(target_sp.get(), var_sp);
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if (valobj_sp)
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sb_value_list.Append(SBValue(valobj_sp));
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}
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}
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return sb_value_list;
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}
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lldb::SBValue SBModule::FindFirstGlobalVariable(lldb::SBTarget &target,
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const char *name) {
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LLDB_INSTRUMENT_VA(this, target, name);
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SBValueList sb_value_list(FindGlobalVariables(target, name, 1));
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if (sb_value_list.IsValid() && sb_value_list.GetSize() > 0)
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return sb_value_list.GetValueAtIndex(0);
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return SBValue();
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}
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lldb::SBType SBModule::FindFirstType(const char *name_cstr) {
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LLDB_INSTRUMENT_VA(this, name_cstr);
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ModuleSP module_sp(GetSP());
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if (!name_cstr || !module_sp)
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return {};
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SymbolContext sc;
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const bool exact_match = false;
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ConstString name(name_cstr);
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SBType sb_type = SBType(module_sp->FindFirstType(sc, name, exact_match));
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if (sb_type.IsValid())
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return sb_type;
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auto type_system_or_err = module_sp->GetTypeSystemForLanguage(eLanguageTypeC);
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if (auto err = type_system_or_err.takeError()) {
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llvm::consumeError(std::move(err));
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return {};
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}
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if (auto ts = *type_system_or_err)
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return SBType(ts->GetBuiltinTypeByName(name));
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return {};
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}
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lldb::SBType SBModule::GetBasicType(lldb::BasicType type) {
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LLDB_INSTRUMENT_VA(this, type);
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ModuleSP module_sp(GetSP());
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if (module_sp) {
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auto type_system_or_err =
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module_sp->GetTypeSystemForLanguage(eLanguageTypeC);
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if (auto err = type_system_or_err.takeError()) {
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llvm::consumeError(std::move(err));
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} else {
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if (auto ts = *type_system_or_err)
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return SBType(ts->GetBasicTypeFromAST(type));
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}
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}
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return SBType();
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}
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lldb::SBTypeList SBModule::FindTypes(const char *type) {
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LLDB_INSTRUMENT_VA(this, type);
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SBTypeList retval;
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ModuleSP module_sp(GetSP());
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if (type && module_sp) {
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TypeList type_list;
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const bool exact_match = false;
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ConstString name(type);
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llvm::DenseSet<SymbolFile *> searched_symbol_files;
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module_sp->FindTypes(name, exact_match, UINT32_MAX, searched_symbol_files,
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type_list);
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if (type_list.Empty()) {
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auto type_system_or_err =
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module_sp->GetTypeSystemForLanguage(eLanguageTypeC);
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if (auto err = type_system_or_err.takeError()) {
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llvm::consumeError(std::move(err));
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} else {
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if (auto ts = *type_system_or_err)
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if (CompilerType compiler_type = ts->GetBuiltinTypeByName(name))
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retval.Append(SBType(compiler_type));
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}
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} else {
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for (size_t idx = 0; idx < type_list.GetSize(); idx++) {
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TypeSP type_sp(type_list.GetTypeAtIndex(idx));
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if (type_sp)
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|
retval.Append(SBType(type_sp));
|
|
}
|
|
}
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
lldb::SBType SBModule::GetTypeByID(lldb::user_id_t uid) {
|
|
LLDB_INSTRUMENT_VA(this, uid);
|
|
|
|
ModuleSP module_sp(GetSP());
|
|
if (module_sp) {
|
|
if (SymbolFile *symfile = module_sp->GetSymbolFile()) {
|
|
Type *type_ptr = symfile->ResolveTypeUID(uid);
|
|
if (type_ptr)
|
|
return SBType(type_ptr->shared_from_this());
|
|
}
|
|
}
|
|
return SBType();
|
|
}
|
|
|
|
lldb::SBTypeList SBModule::GetTypes(uint32_t type_mask) {
|
|
LLDB_INSTRUMENT_VA(this, type_mask);
|
|
|
|
SBTypeList sb_type_list;
|
|
|
|
ModuleSP module_sp(GetSP());
|
|
if (!module_sp)
|
|
return sb_type_list;
|
|
SymbolFile *symfile = module_sp->GetSymbolFile();
|
|
if (!symfile)
|
|
return sb_type_list;
|
|
|
|
TypeClass type_class = static_cast<TypeClass>(type_mask);
|
|
TypeList type_list;
|
|
symfile->GetTypes(nullptr, type_class, type_list);
|
|
sb_type_list.m_opaque_up->Append(type_list);
|
|
return sb_type_list;
|
|
}
|
|
|
|
SBSection SBModule::FindSection(const char *sect_name) {
|
|
LLDB_INSTRUMENT_VA(this, sect_name);
|
|
|
|
SBSection sb_section;
|
|
|
|
ModuleSP module_sp(GetSP());
|
|
if (sect_name && module_sp) {
|
|
// Give the symbol vendor a chance to add to the unified section list.
|
|
module_sp->GetSymbolFile();
|
|
SectionList *section_list = module_sp->GetSectionList();
|
|
if (section_list) {
|
|
ConstString const_sect_name(sect_name);
|
|
SectionSP section_sp(section_list->FindSectionByName(const_sect_name));
|
|
if (section_sp) {
|
|
sb_section.SetSP(section_sp);
|
|
}
|
|
}
|
|
}
|
|
return sb_section;
|
|
}
|
|
|
|
lldb::ByteOrder SBModule::GetByteOrder() {
|
|
LLDB_INSTRUMENT_VA(this);
|
|
|
|
ModuleSP module_sp(GetSP());
|
|
if (module_sp)
|
|
return module_sp->GetArchitecture().GetByteOrder();
|
|
return eByteOrderInvalid;
|
|
}
|
|
|
|
const char *SBModule::GetTriple() {
|
|
LLDB_INSTRUMENT_VA(this);
|
|
|
|
ModuleSP module_sp(GetSP());
|
|
if (!module_sp)
|
|
return nullptr;
|
|
|
|
std::string triple(module_sp->GetArchitecture().GetTriple().str());
|
|
// Unique the string so we don't run into ownership issues since the const
|
|
// strings put the string into the string pool once and the strings never
|
|
// comes out
|
|
ConstString const_triple(triple.c_str());
|
|
return const_triple.GetCString();
|
|
}
|
|
|
|
uint32_t SBModule::GetAddressByteSize() {
|
|
LLDB_INSTRUMENT_VA(this);
|
|
|
|
ModuleSP module_sp(GetSP());
|
|
if (module_sp)
|
|
return module_sp->GetArchitecture().GetAddressByteSize();
|
|
return sizeof(void *);
|
|
}
|
|
|
|
uint32_t SBModule::GetVersion(uint32_t *versions, uint32_t num_versions) {
|
|
LLDB_INSTRUMENT_VA(this, versions, num_versions);
|
|
|
|
llvm::VersionTuple version;
|
|
if (ModuleSP module_sp = GetSP())
|
|
version = module_sp->GetVersion();
|
|
uint32_t result = 0;
|
|
if (!version.empty())
|
|
++result;
|
|
if (version.getMinor())
|
|
++result;
|
|
if (version.getSubminor())
|
|
++result;
|
|
|
|
if (!versions)
|
|
return result;
|
|
|
|
if (num_versions > 0)
|
|
versions[0] = version.empty() ? UINT32_MAX : version.getMajor();
|
|
if (num_versions > 1)
|
|
versions[1] = version.getMinor().value_or(UINT32_MAX);
|
|
if (num_versions > 2)
|
|
versions[2] = version.getSubminor().value_or(UINT32_MAX);
|
|
for (uint32_t i = 3; i < num_versions; ++i)
|
|
versions[i] = UINT32_MAX;
|
|
return result;
|
|
}
|
|
|
|
lldb::SBFileSpec SBModule::GetSymbolFileSpec() const {
|
|
LLDB_INSTRUMENT_VA(this);
|
|
|
|
lldb::SBFileSpec sb_file_spec;
|
|
ModuleSP module_sp(GetSP());
|
|
if (module_sp) {
|
|
if (SymbolFile *symfile = module_sp->GetSymbolFile())
|
|
sb_file_spec.SetFileSpec(symfile->GetObjectFile()->GetFileSpec());
|
|
}
|
|
return sb_file_spec;
|
|
}
|
|
|
|
lldb::SBAddress SBModule::GetObjectFileHeaderAddress() const {
|
|
LLDB_INSTRUMENT_VA(this);
|
|
|
|
lldb::SBAddress sb_addr;
|
|
ModuleSP module_sp(GetSP());
|
|
if (module_sp) {
|
|
ObjectFile *objfile_ptr = module_sp->GetObjectFile();
|
|
if (objfile_ptr)
|
|
sb_addr.ref() = objfile_ptr->GetBaseAddress();
|
|
}
|
|
return sb_addr;
|
|
}
|
|
|
|
lldb::SBAddress SBModule::GetObjectFileEntryPointAddress() const {
|
|
LLDB_INSTRUMENT_VA(this);
|
|
|
|
lldb::SBAddress sb_addr;
|
|
ModuleSP module_sp(GetSP());
|
|
if (module_sp) {
|
|
ObjectFile *objfile_ptr = module_sp->GetObjectFile();
|
|
if (objfile_ptr)
|
|
sb_addr.ref() = objfile_ptr->GetEntryPointAddress();
|
|
}
|
|
return sb_addr;
|
|
}
|
|
|
|
uint32_t SBModule::GetNumberAllocatedModules() {
|
|
LLDB_INSTRUMENT();
|
|
|
|
return Module::GetNumberAllocatedModules();
|
|
}
|
|
|
|
void SBModule::GarbageCollectAllocatedModules() {
|
|
LLDB_INSTRUMENT();
|
|
|
|
const bool mandatory = false;
|
|
ModuleList::RemoveOrphanSharedModules(mandatory);
|
|
}
|