20 #include "llvm/MC/TargetRegistry.h"
27 ABI::FindPlugin(lldb::ProcessSP process_sp,
const ArchSpec &arch) {
29 ABICreateInstance create_callback;
32 (create_callback = PluginManager::GetABICreateCallbackAtIndex(idx)) !=
35 abi_sp = create_callback(process_sp, arch);
44 ABI::~ABI() =
default;
46 bool RegInfoBasedABI::GetRegisterInfoByName(llvm::StringRef name,
49 const RegisterInfo *register_info_array = GetRegisterInfoArray(count);
50 if (register_info_array) {
52 for (i = 0; i < count; ++i) {
53 const char *reg_name = register_info_array[i].name;
54 if (reg_name == name) {
55 info = register_info_array[i];
59 for (i = 0; i < count; ++i) {
60 const char *reg_alt_name = register_info_array[i].alt_name;
61 if (reg_alt_name == name) {
62 info = register_info_array[i];
71 bool persistent)
const {
73 return ValueObjectSP();
75 ValueObjectSP return_valobj_sp;
77 return_valobj_sp = GetReturnValueObjectImpl(thread, ast_type);
78 if (!return_valobj_sp)
79 return return_valobj_sp;
93 if (!persistent_expression_state)
99 lldb::ValueObjectSP const_valobj_sp;
102 if (return_valobj_sp->GetIsConstant()) {
103 const_valobj_sp = return_valobj_sp;
104 const_valobj_sp->SetName(persistent_variable_name);
107 return_valobj_sp->CreateConstantValue(persistent_variable_name);
109 lldb::ValueObjectSP live_valobj_sp = return_valobj_sp;
111 return_valobj_sp = const_valobj_sp;
113 ExpressionVariableSP expr_variable_sp(
117 assert(expr_variable_sp);
121 const Value &result_value = live_valobj_sp->GetValue();
124 case Value::ValueType::Invalid:
126 case Value::ValueType::HostAddress:
127 case Value::ValueType::FileAddress:
130 case Value::ValueType::Scalar:
131 expr_variable_sp->m_flags |=
132 ExpressionVariable::EVIsFreezeDried;
133 expr_variable_sp->m_flags |=
134 ExpressionVariable::EVIsLLDBAllocated;
135 expr_variable_sp->m_flags |=
136 ExpressionVariable::EVNeedsAllocation;
138 case Value::ValueType::LoadAddress:
139 expr_variable_sp->m_live_sp = live_valobj_sp;
140 expr_variable_sp->m_flags |=
141 ExpressionVariable::EVIsProgramReference;
145 return_valobj_sp = expr_variable_sp->GetValueObject();
147 return return_valobj_sp;
150 ValueObjectSP ABI::GetReturnValueObject(
Thread &thread, llvm::Type &ast_type,
151 bool persistent)
const {
152 ValueObjectSP return_valobj_sp;
153 return_valobj_sp = GetReturnValueObjectImpl(thread, ast_type);
154 return return_valobj_sp;
161 lldb::ValueObjectSP ABI::GetReturnValueObjectImpl(
Thread &thread,
162 llvm::Type &ir_type)
const {
163 ValueObjectSP return_valobj_sp;
167 return return_valobj_sp;
173 llvm::ArrayRef<ABI::CallArgument> args)
const {
175 llvm_unreachable(
"Should never get here!");
178 bool ABI::GetFallbackRegisterLocation(
179 const RegisterInfo *reg_info,
193 if (RegisterIsVolatile(reg_info)) {
201 std::unique_ptr<llvm::MCRegisterInfo> ABI::MakeMCRegisterInfo(
const ArchSpec &arch) {
204 const llvm::Target *target =
205 llvm::TargetRegistry::lookupTarget(triple, lookup_error);
208 "Failed to create an llvm target for {0}: {1}", triple,
212 std::unique_ptr<llvm::MCRegisterInfo> info_up(
213 target->createMCRegInfo(triple));
218 void RegInfoBasedABI::AugmentRegisterInfo(
219 std::vector<DynamicRegisterInfo::Register> ®s) {
225 RegisterInfo abi_info;
226 if (!GetRegisterInfoByName(info.name.GetStringRef(), abi_info))
238 void MCBasedABI::AugmentRegisterInfo(
239 std::vector<DynamicRegisterInfo::Register> ®s) {
242 std::tie(eh,
dwarf) = GetEHAndDWARFNums(info.name.GetStringRef());
245 info.regnum_ehframe = eh;
247 info.regnum_dwarf =
dwarf;
249 info.regnum_generic = GetGenericNum(info.name.GetStringRef());
253 std::pair<uint32_t, uint32_t>
254 MCBasedABI::GetEHAndDWARFNums(llvm::StringRef name) {
256 for (
char &c : mc_name)
260 for (
unsigned reg = 0; reg < m_mc_register_info_up->getNumRegs(); ++reg) {
261 if (m_mc_register_info_up->getName(reg) == mc_name) {
262 eh = m_mc_register_info_up->getDwarfRegNum(reg,
true);
263 dwarf = m_mc_register_info_up->getDwarfRegNum(reg,
false);
272 void MCBasedABI::MapRegisterName(
std::string &name, llvm::StringRef from_prefix,
273 llvm::StringRef to_prefix) {
274 llvm::StringRef name_ref = name;
275 if (!name_ref.consume_front(from_prefix))
278 if (name_ref.empty() || to_integer(name_ref, _, 10))
279 name = (to_prefix + name_ref).str();