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llvm-project/lldb/source/Plugins/ABI/X86/ABISysV_i386.cpp

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//===-- ABISysV_i386.cpp --------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//===----------------------------------------------------------------------===//
#include "ABISysV_i386.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/Triple.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/Value.h"
#include "lldb/Core/ValueObjectConstResult.h"
#include "lldb/Core/ValueObjectMemory.h"
#include "lldb/Core/ValueObjectRegister.h"
#include "lldb/Symbol/UnwindPlan.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"
#include "lldb/Utility/ConstString.h"
#include "lldb/Utility/DataExtractor.h"
#include "lldb/Utility/Log.h"
#include "lldb/Utility/RegisterValue.h"
#include "lldb/Utility/Status.h"
using namespace lldb;
using namespace lldb_private;
LLDB_PLUGIN_DEFINE(ABISysV_i386)
// This source file uses the following document as a reference:
//====================================================================
// System V Application Binary Interface
// Intel386 Architecture Processor Supplement, Version 1.0
// Edited by
// H.J. Lu, David L Kreitzer, Milind Girkar, Zia Ansari
//
// (Based on
// System V Application Binary Interface,
// AMD64 Architecture Processor Supplement,
// Edited by
// H.J. Lu, Michael Matz, Milind Girkar, Jan Hubicka,
// Andreas Jaeger, Mark Mitchell)
//
// February 3, 2015
//====================================================================
// DWARF Register Number Mapping
// See Table 2.14 of the reference document (specified on top of this file)
// Comment: Table 2.14 is followed till 'mm' entries. After that, all entries
// are ignored here.
enum dwarf_regnums {
dwarf_eax = 0,
dwarf_ecx,
dwarf_edx,
dwarf_ebx,
dwarf_esp,
dwarf_ebp,
dwarf_esi,
dwarf_edi,
dwarf_eip,
};
// Static Functions
ABISP
ABISysV_i386::CreateInstance(lldb::ProcessSP process_sp, const ArchSpec &arch) {
if (arch.GetTriple().getVendor() != llvm::Triple::Apple) {
if (arch.GetTriple().getArch() == llvm::Triple::x86) {
return ABISP(
new ABISysV_i386(std::move(process_sp), MakeMCRegisterInfo(arch)));
}
}
return ABISP();
}
bool ABISysV_i386::PrepareTrivialCall(Thread &thread, addr_t sp,
addr_t func_addr, addr_t return_addr,
llvm::ArrayRef<addr_t> args) const {
RegisterContext *reg_ctx = thread.GetRegisterContext().get();
if (!reg_ctx)
return false;
uint32_t pc_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber(
eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC);
uint32_t sp_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber(
eRegisterKindGeneric, LLDB_REGNUM_GENERIC_SP);
// While using register info to write a register value to memory, the
// register info just needs to have the correct size of a 32 bit register,
// the actual register it pertains to is not important, just the size needs
// to be correct. "eax" is used here for this purpose.
const RegisterInfo *reg_info_32 = reg_ctx->GetRegisterInfoByName("eax");
if (!reg_info_32)
return false; // TODO this should actually never happen
Status error;
RegisterValue reg_value;
// Make room for the argument(s) on the stack
sp -= 4 * args.size();
// SP Alignment
sp &= ~(16ull - 1ull); // 16-byte alignment
// Write arguments onto the stack
addr_t arg_pos = sp;
for (addr_t arg : args) {
reg_value.SetUInt32(arg);
error = reg_ctx->WriteRegisterValueToMemory(
reg_info_32, arg_pos, reg_info_32->byte_size, reg_value);
if (error.Fail())
return false;
arg_pos += 4;
}
// The return address is pushed onto the stack
sp -= 4;
reg_value.SetUInt32(return_addr);
error = reg_ctx->WriteRegisterValueToMemory(
reg_info_32, sp, reg_info_32->byte_size, reg_value);
if (error.Fail())
return false;
// Setting %esp to the actual stack value.
if (!reg_ctx->WriteRegisterFromUnsigned(sp_reg_num, sp))
return false;
// Setting %eip to the address of the called function.
if (!reg_ctx->WriteRegisterFromUnsigned(pc_reg_num, func_addr))
return false;
return true;
}
static bool ReadIntegerArgument(Scalar &scalar, unsigned int bit_width,
bool is_signed, Process *process,
addr_t &current_stack_argument) {
uint32_t byte_size = (bit_width + (8 - 1)) / 8;
Status error;
if (!process)
return false;
if (process->ReadScalarIntegerFromMemory(current_stack_argument, byte_size,
is_signed, scalar, error)) {
current_stack_argument += byte_size;
return true;
}
return false;
}
bool ABISysV_i386::GetArgumentValues(Thread &thread, ValueList &values) const {
unsigned int num_values = values.GetSize();
unsigned int value_index;
RegisterContext *reg_ctx = thread.GetRegisterContext().get();
if (!reg_ctx)
return false;
// Get pointer to the first stack argument
addr_t sp = reg_ctx->GetSP(0);
if (!sp)
return false;
addr_t current_stack_argument = sp + 4; // jump over return address
for (value_index = 0; value_index < num_values; ++value_index) {
Value *value = values.GetValueAtIndex(value_index);
if (!value)
return false;
// Currently: Support for extracting values with Clang QualTypes only.
CompilerType compiler_type(value->GetCompilerType());
llvm::Optional<uint64_t> bit_size = compiler_type.GetBitSize(&thread);
if (bit_size) {
bool is_signed;
if (compiler_type.IsIntegerOrEnumerationType(is_signed)) {
ReadIntegerArgument(value->GetScalar(), *bit_size, is_signed,
thread.GetProcess().get(), current_stack_argument);
} else if (compiler_type.IsPointerType()) {
ReadIntegerArgument(value->GetScalar(), *bit_size, false,
thread.GetProcess().get(), current_stack_argument);
}
}
}
return true;
}
Status ABISysV_i386::SetReturnValueObject(lldb::StackFrameSP &frame_sp,
lldb::ValueObjectSP &new_value_sp) {
Status error;
if (!new_value_sp) {
error.SetErrorString("Empty value object for return value.");
return error;
}
CompilerType compiler_type = new_value_sp->GetCompilerType();
if (!compiler_type) {
error.SetErrorString("Null clang type for return value.");
return error;
}
const uint32_t type_flags = compiler_type.GetTypeInfo();
Thread *thread = frame_sp->GetThread().get();
RegisterContext *reg_ctx = thread->GetRegisterContext().get();
DataExtractor data;
Status data_error;
size_t num_bytes = new_value_sp->GetData(data, data_error);
bool register_write_successful = true;
if (data_error.Fail()) {
error.SetErrorStringWithFormat(
"Couldn't convert return value to raw data: %s",
data_error.AsCString());
return error;
}
// Following "IF ELSE" block categorizes various 'Fundamental Data Types'.
// The terminology 'Fundamental Data Types' used here is adopted from Table
// 2.1 of the reference document (specified on top of this file)
if (type_flags & eTypeIsPointer) // 'Pointer'
{
if (num_bytes != sizeof(uint32_t)) {
error.SetErrorString("Pointer to be returned is not 4 bytes wide");
return error;
}
lldb::offset_t offset = 0;
const RegisterInfo *eax_info = reg_ctx->GetRegisterInfoByName("eax", 0);
uint32_t raw_value = data.GetMaxU32(&offset, num_bytes);
register_write_successful =
reg_ctx->WriteRegisterFromUnsigned(eax_info, raw_value);
} else if ((type_flags & eTypeIsScalar) ||
(type_flags & eTypeIsEnumeration)) //'Integral' + 'Floating Point'
{
lldb::offset_t offset = 0;
const RegisterInfo *eax_info = reg_ctx->GetRegisterInfoByName("eax", 0);
if (type_flags & eTypeIsInteger) // 'Integral' except enum
{
switch (num_bytes) {
default:
break;
case 16:
// For clang::BuiltinType::UInt128 & Int128 ToDo: Need to decide how to
// handle it
break;
case 8: {
uint32_t raw_value_low = data.GetMaxU32(&offset, 4);
const RegisterInfo *edx_info = reg_ctx->GetRegisterInfoByName("edx", 0);
uint32_t raw_value_high = data.GetMaxU32(&offset, num_bytes - offset);
register_write_successful =
(reg_ctx->WriteRegisterFromUnsigned(eax_info, raw_value_low) &&
reg_ctx->WriteRegisterFromUnsigned(edx_info, raw_value_high));
break;
}
case 4:
case 2:
case 1: {
uint32_t raw_value = data.GetMaxU32(&offset, num_bytes);
register_write_successful =
reg_ctx->WriteRegisterFromUnsigned(eax_info, raw_value);
break;
}
}
} else if (type_flags & eTypeIsEnumeration) // handles enum
{
uint32_t raw_value = data.GetMaxU32(&offset, num_bytes);
register_write_successful =
reg_ctx->WriteRegisterFromUnsigned(eax_info, raw_value);
} else if (type_flags & eTypeIsFloat) // 'Floating Point'
{
RegisterValue st0_value, fstat_value, ftag_value;
const RegisterInfo *st0_info = reg_ctx->GetRegisterInfoByName("st0", 0);
const RegisterInfo *fstat_info =
reg_ctx->GetRegisterInfoByName("fstat", 0);
const RegisterInfo *ftag_info = reg_ctx->GetRegisterInfoByName("ftag", 0);
/* According to Page 3-12 of document
System V Application Binary Interface, Intel386 Architecture Processor
Supplement, Fourth Edition
To return Floating Point values, all st% registers except st0 should be
empty after exiting from
a function. This requires setting fstat and ftag registers to specific
values.
fstat: The TOP field of fstat should be set to a value [0,7]. ABI doesn't
specify the specific
value of TOP in case of function return. Hence, we set the TOP field to 7
by our choice. */
uint32_t value_fstat_u32 = 0x00003800;
/* ftag: Implication of setting TOP to 7 and indicating all st% registers
empty except st0 is to set
7th bit of 4th byte of FXSAVE area to 1 and all other bits of this byte to
0. This is in accordance
with the document Intel 64 and IA-32 Architectures Software Developer's
Manual, January 2015 */
uint32_t value_ftag_u32 = 0x00000080;
if (num_bytes <= 12) // handles float, double, long double, __float80
{
long double value_long_dbl = 0.0;
if (num_bytes == 4)
value_long_dbl = data.GetFloat(&offset);
else if (num_bytes == 8)
value_long_dbl = data.GetDouble(&offset);
else if (num_bytes == 12)
value_long_dbl = data.GetLongDouble(&offset);
else {
error.SetErrorString("Invalid number of bytes for this return type");
return error;
}
st0_value.SetLongDouble(value_long_dbl);
fstat_value.SetUInt32(value_fstat_u32);
ftag_value.SetUInt32(value_ftag_u32);
register_write_successful =
reg_ctx->WriteRegister(st0_info, st0_value) &&
reg_ctx->WriteRegister(fstat_info, fstat_value) &&
reg_ctx->WriteRegister(ftag_info, ftag_value);
} else if (num_bytes == 16) // handles __float128
{
error.SetErrorString("Implementation is missing for this clang type.");
}
} else {
// Neither 'Integral' nor 'Floating Point'. If flow reaches here then
// check type_flags. This type_flags is not a valid type.
error.SetErrorString("Invalid clang type");
}
} else {
/* 'Complex Floating Point', 'Packed', 'Decimal Floating Point' and
'Aggregate' data types
are yet to be implemented */
error.SetErrorString("Currently only Integral and Floating Point clang "
"types are supported.");
}
if (!register_write_successful)
error.SetErrorString("Register writing failed");
return error;
}
ValueObjectSP ABISysV_i386::GetReturnValueObjectSimple(
Thread &thread, CompilerType &return_compiler_type) const {
ValueObjectSP return_valobj_sp;
Value value;
if (!return_compiler_type)
return return_valobj_sp;
value.SetCompilerType(return_compiler_type);
RegisterContext *reg_ctx = thread.GetRegisterContext().get();
if (!reg_ctx)
return return_valobj_sp;
const uint32_t type_flags = return_compiler_type.GetTypeInfo();
unsigned eax_id =
reg_ctx->GetRegisterInfoByName("eax", 0)->kinds[eRegisterKindLLDB];
unsigned edx_id =
reg_ctx->GetRegisterInfoByName("edx", 0)->kinds[eRegisterKindLLDB];
// Following "IF ELSE" block categorizes various 'Fundamental Data Types'.
// The terminology 'Fundamental Data Types' used here is adopted from Table
// 2.1 of the reference document (specified on top of this file)
if (type_flags & eTypeIsPointer) // 'Pointer'
{
uint32_t ptr =
thread.GetRegisterContext()->ReadRegisterAsUnsigned(eax_id, 0) &
0xffffffff;
value.SetValueType(Value::eValueTypeScalar);
value.GetScalar() = ptr;
return_valobj_sp = ValueObjectConstResult::Create(
thread.GetStackFrameAtIndex(0).get(), value, ConstString(""));
} else if ((type_flags & eTypeIsScalar) ||
(type_flags & eTypeIsEnumeration)) //'Integral' + 'Floating Point'
{
value.SetValueType(Value::eValueTypeScalar);
llvm::Optional<uint64_t> byte_size =
return_compiler_type.GetByteSize(nullptr);
if (!byte_size)
return return_valobj_sp;
bool success = false;
if (type_flags & eTypeIsInteger) // 'Integral' except enum
{
const bool is_signed = ((type_flags & eTypeIsSigned) != 0);
uint64_t raw_value =
thread.GetRegisterContext()->ReadRegisterAsUnsigned(eax_id, 0) &
0xffffffff;
raw_value |=
(thread.GetRegisterContext()->ReadRegisterAsUnsigned(edx_id, 0) &
0xffffffff)
<< 32;
switch (*byte_size) {
default:
break;
case 16:
// For clang::BuiltinType::UInt128 & Int128 ToDo: Need to decide how to
// handle it
break;
case 8:
if (is_signed)
value.GetScalar() = (int64_t)(raw_value);
else
value.GetScalar() = (uint64_t)(raw_value);
success = true;
break;
case 4:
if (is_signed)
value.GetScalar() = (int32_t)(raw_value & UINT32_MAX);
else
value.GetScalar() = (uint32_t)(raw_value & UINT32_MAX);
success = true;
break;
case 2:
if (is_signed)
value.GetScalar() = (int16_t)(raw_value & UINT16_MAX);
else
value.GetScalar() = (uint16_t)(raw_value & UINT16_MAX);
success = true;
break;
case 1:
if (is_signed)
value.GetScalar() = (int8_t)(raw_value & UINT8_MAX);
else
value.GetScalar() = (uint8_t)(raw_value & UINT8_MAX);
success = true;
break;
}
if (success)
return_valobj_sp = ValueObjectConstResult::Create(
thread.GetStackFrameAtIndex(0).get(), value, ConstString(""));
} else if (type_flags & eTypeIsEnumeration) // handles enum
{
uint32_t enm =
thread.GetRegisterContext()->ReadRegisterAsUnsigned(eax_id, 0) &
0xffffffff;
value.SetValueType(Value::eValueTypeScalar);
value.GetScalar() = enm;
return_valobj_sp = ValueObjectConstResult::Create(
thread.GetStackFrameAtIndex(0).get(), value, ConstString(""));
} else if (type_flags & eTypeIsFloat) // 'Floating Point'
{
if (*byte_size <= 12) // handles float, double, long double, __float80
{
const RegisterInfo *st0_info = reg_ctx->GetRegisterInfoByName("st0", 0);
RegisterValue st0_value;
if (reg_ctx->ReadRegister(st0_info, st0_value)) {
DataExtractor data;
if (st0_value.GetData(data)) {
lldb::offset_t offset = 0;
long double value_long_double = data.GetLongDouble(&offset);
// float is 4 bytes.
if (*byte_size == 4) {
float value_float = (float)value_long_double;
value.GetScalar() = value_float;
success = true;
} else if (*byte_size == 8) {
// double is 8 bytes
// On Android Platform: long double is also 8 bytes It will be
// handled here only.
double value_double = (double)value_long_double;
value.GetScalar() = value_double;
success = true;
} else if (*byte_size == 12) {
// long double and __float80 are 12 bytes on i386.
value.GetScalar() = value_long_double;
success = true;
}
}
}
if (success)
return_valobj_sp = ValueObjectConstResult::Create(
thread.GetStackFrameAtIndex(0).get(), value, ConstString(""));
} else if (*byte_size == 16) // handles __float128
{
lldb::addr_t storage_addr = (uint32_t)(
thread.GetRegisterContext()->ReadRegisterAsUnsigned(eax_id, 0) &
0xffffffff);
return_valobj_sp = ValueObjectMemory::Create(
&thread, "", Address(storage_addr, nullptr), return_compiler_type);
}
} else // Neither 'Integral' nor 'Floating Point'
{
// If flow reaches here then check type_flags This type_flags is
// unhandled
}
} else if (type_flags & eTypeIsComplex) // 'Complex Floating Point'
{
// ToDo: Yet to be implemented
} else if (type_flags & eTypeIsVector) // 'Packed'
{
llvm::Optional<uint64_t> byte_size =
return_compiler_type.GetByteSize(nullptr);
if (byte_size && *byte_size > 0) {
const RegisterInfo *vec_reg = reg_ctx->GetRegisterInfoByName("xmm0", 0);
if (vec_reg == nullptr)
vec_reg = reg_ctx->GetRegisterInfoByName("mm0", 0);
if (vec_reg) {
if (*byte_size <= vec_reg->byte_size) {
ProcessSP process_sp(thread.GetProcess());
if (process_sp) {
std::unique_ptr<DataBufferHeap> heap_data_up(
new DataBufferHeap(*byte_size, 0));
const ByteOrder byte_order = process_sp->GetByteOrder();
RegisterValue reg_value;
if (reg_ctx->ReadRegister(vec_reg, reg_value)) {
Status error;
if (reg_value.GetAsMemoryData(vec_reg, heap_data_up->GetBytes(),
heap_data_up->GetByteSize(),
byte_order, error)) {
DataExtractor data(DataBufferSP(heap_data_up.release()),
byte_order,
process_sp->GetTarget()
.GetArchitecture()
.GetAddressByteSize());
return_valobj_sp = ValueObjectConstResult::Create(
&thread, return_compiler_type, ConstString(""), data);
}
}
}
} else if (*byte_size <= vec_reg->byte_size * 2) {
const RegisterInfo *vec_reg2 =
reg_ctx->GetRegisterInfoByName("xmm1", 0);
if (vec_reg2) {
ProcessSP process_sp(thread.GetProcess());
if (process_sp) {
std::unique_ptr<DataBufferHeap> heap_data_up(
new DataBufferHeap(*byte_size, 0));
const ByteOrder byte_order = process_sp->GetByteOrder();
RegisterValue reg_value;
RegisterValue reg_value2;
if (reg_ctx->ReadRegister(vec_reg, reg_value) &&
reg_ctx->ReadRegister(vec_reg2, reg_value2)) {
Status error;
if (reg_value.GetAsMemoryData(vec_reg, heap_data_up->GetBytes(),
vec_reg->byte_size, byte_order,
error) &&
reg_value2.GetAsMemoryData(
vec_reg2, heap_data_up->GetBytes() + vec_reg->byte_size,
heap_data_up->GetByteSize() - vec_reg->byte_size,
byte_order, error)) {
DataExtractor data(DataBufferSP(heap_data_up.release()),
byte_order,
process_sp->GetTarget()
.GetArchitecture()
.GetAddressByteSize());
return_valobj_sp = ValueObjectConstResult::Create(
&thread, return_compiler_type, ConstString(""), data);
}
}
}
}
}
}
}
} else // 'Decimal Floating Point'
{
// ToDo: Yet to be implemented
}
return return_valobj_sp;
}
ValueObjectSP ABISysV_i386::GetReturnValueObjectImpl(
Thread &thread, CompilerType &return_compiler_type) const {
ValueObjectSP return_valobj_sp;
if (!return_compiler_type)
return return_valobj_sp;
ExecutionContext exe_ctx(thread.shared_from_this());
return_valobj_sp = GetReturnValueObjectSimple(thread, return_compiler_type);
if (return_valobj_sp)
return return_valobj_sp;
RegisterContextSP reg_ctx_sp = thread.GetRegisterContext();
if (!reg_ctx_sp)
return return_valobj_sp;
if (return_compiler_type.IsAggregateType()) {
unsigned eax_id =
reg_ctx_sp->GetRegisterInfoByName("eax", 0)->kinds[eRegisterKindLLDB];
lldb::addr_t storage_addr = (uint32_t)(
thread.GetRegisterContext()->ReadRegisterAsUnsigned(eax_id, 0) &
0xffffffff);
return_valobj_sp = ValueObjectMemory::Create(
&thread, "", Address(storage_addr, nullptr), return_compiler_type);
}
return return_valobj_sp;
}
// This defines CFA as esp+4
// The saved pc is at CFA-4 (i.e. esp+0)
// The saved esp is CFA+0
bool ABISysV_i386::CreateFunctionEntryUnwindPlan(UnwindPlan &unwind_plan) {
unwind_plan.Clear();
unwind_plan.SetRegisterKind(eRegisterKindDWARF);
uint32_t sp_reg_num = dwarf_esp;
uint32_t pc_reg_num = dwarf_eip;
UnwindPlan::RowSP row(new UnwindPlan::Row);
row->GetCFAValue().SetIsRegisterPlusOffset(sp_reg_num, 4);
row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, -4, false);
row->SetRegisterLocationToIsCFAPlusOffset(sp_reg_num, 0, true);
unwind_plan.AppendRow(row);
unwind_plan.SetSourceName("i386 at-func-entry default");
unwind_plan.SetSourcedFromCompiler(eLazyBoolNo);
return true;
}
// This defines CFA as ebp+8
// The saved pc is at CFA-4 (i.e. ebp+4)
// The saved ebp is at CFA-8 (i.e. ebp+0)
// The saved esp is CFA+0
bool ABISysV_i386::CreateDefaultUnwindPlan(UnwindPlan &unwind_plan) {
unwind_plan.Clear();
unwind_plan.SetRegisterKind(eRegisterKindDWARF);
uint32_t fp_reg_num = dwarf_ebp;
uint32_t sp_reg_num = dwarf_esp;
uint32_t pc_reg_num = dwarf_eip;
UnwindPlan::RowSP row(new UnwindPlan::Row);
const int32_t ptr_size = 4;
row->GetCFAValue().SetIsRegisterPlusOffset(fp_reg_num, 2 * ptr_size);
row->SetOffset(0);
row->SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, ptr_size * -2, true);
row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, ptr_size * -1, true);
row->SetRegisterLocationToIsCFAPlusOffset(sp_reg_num, 0, true);
unwind_plan.AppendRow(row);
unwind_plan.SetSourceName("i386 default unwind plan");
unwind_plan.SetSourcedFromCompiler(eLazyBoolNo);
unwind_plan.SetUnwindPlanValidAtAllInstructions(eLazyBoolNo);
unwind_plan.SetUnwindPlanForSignalTrap(eLazyBoolNo);
return true;
}
// According to "Register Usage" in reference document (specified on top of
// this source file) ebx, ebp, esi, edi and esp registers are preserved i.e.
// non-volatile i.e. callee-saved on i386
bool ABISysV_i386::RegisterIsCalleeSaved(const RegisterInfo *reg_info) {
if (!reg_info)
return false;
// Saved registers are ebx, ebp, esi, edi, esp, eip
const char *name = reg_info->name;
if (name[0] == 'e') {
switch (name[1]) {
case 'b':
if (name[2] == 'x' || name[2] == 'p')
return name[3] == '\0';
break;
case 'd':
if (name[2] == 'i')
return name[3] == '\0';
break;
case 'i':
if (name[2] == 'p')
return name[3] == '\0';
break;
case 's':
if (name[2] == 'i' || name[2] == 'p')
return name[3] == '\0';
break;
}
}
if (name[0] == 's' && name[1] == 'p' && name[2] == '\0') // sp
return true;
if (name[0] == 'f' && name[1] == 'p' && name[2] == '\0') // fp
return true;
if (name[0] == 'p' && name[1] == 'c' && name[2] == '\0') // pc
return true;
return false;
}
void ABISysV_i386::Initialize() {
PluginManager::RegisterPlugin(
GetPluginNameStatic(), "System V ABI for i386 targets", CreateInstance);
}
void ABISysV_i386::Terminate() {
PluginManager::UnregisterPlugin(CreateInstance);
}
// PluginInterface protocol
lldb_private::ConstString ABISysV_i386::GetPluginNameStatic() {
static ConstString g_name("sysv-i386");
return g_name;
}
lldb_private::ConstString ABISysV_i386::GetPluginName() {
return GetPluginNameStatic();
}
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