alexandreyy created this revision.
Herald added subscribers: kbarton, mgorny, nemanjai.
This patch implements the ABI Plugin for PPC64le. It was based on the
ABI for PPC64. It also enables LLDB to evaluate expressions using JIT.
https://reviews.llvm.org/D41702
Files:
source/API/SystemInitializerFull.cpp
source/Plugins/ABI/CMakeLists.txt
source/Plugins/ABI/SysV-ppc64le/ABISysV_ppc64le.cpp
source/Plugins/ABI/SysV-ppc64le/ABISysV_ppc64le.h
source/Plugins/ABI/SysV-ppc64le/CMakeLists.txt
Index: source/Plugins/ABI/SysV-ppc64le/CMakeLists.txt
===================================================================
--- /dev/null
+++ source/Plugins/ABI/SysV-ppc64le/CMakeLists.txt
@@ -0,0 +1,10 @@
+add_lldb_library(lldbPluginABISysV_ppc64le PLUGIN
+ ABISysV_ppc64le.cpp
+
+ LINK_LIBS
+ lldbCore
+ lldbSymbol
+ lldbTarget
+ LINK_COMPONENTS
+ Support
+ )
Index: source/Plugins/ABI/SysV-ppc64le/ABISysV_ppc64le.h
===================================================================
--- /dev/null
+++ source/Plugins/ABI/SysV-ppc64le/ABISysV_ppc64le.h
@@ -0,0 +1,114 @@
+//===-- ABISysV_ppc64le.h ---------------------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef liblldb_ABISysV_ppc64le_h_
+#define liblldb_ABISysV_ppc64le_h_
+
+// C Includes
+// C++ Includes
+// Other libraries and framework includes
+// Project includes
+#include "lldb/Target/ABI.h"
+#include "lldb/lldb-private.h"
+
+class ABISysV_ppc64le: public lldb_private::ABI {
+public:
+ ~ABISysV_ppc64le() override = default;
+
+ size_t GetRedZoneSize() const override;
+
+ bool PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp,
+ lldb::addr_t functionAddress, lldb::addr_t returnAddress,
+ llvm::ArrayRef<lldb::addr_t> args) const override;
+
+ bool GetArgumentValues(lldb_private::Thread &thread,
+ lldb_private::ValueList &values) const override;
+
+ lldb_private::Status
+ SetReturnValueObject(lldb::StackFrameSP &frame_sp,
+ lldb::ValueObjectSP &new_value) override;
+
+ lldb::ValueObjectSP
+ GetReturnValueObjectImpl(lldb_private::Thread &thread,
+ lldb_private::CompilerType &type) const override;
+
+ bool
+ CreateFunctionEntryUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
+
+ bool CreateDefaultUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
+
+ bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override;
+
+ // The SysV ppc64le ABI requires that stack frames be 16 byte aligned.
+ // When there is a trap handler on the stack, e.g. _sigtramp in userland
+ // code, we've seen that the stack pointer is often not aligned properly
+ // before the handler is invoked. This means that lldb will stop the unwind
+ // early -- before the function which caused the trap.
+ //
+ // To work around this, we relax that alignment to be just word-size
+ // (8-bytes).
+ // Whitelisting the trap handlers for user space would be easy (_sigtramp)
+ // but in other environments there can be a large number of different
+ // functions involved in async traps.
+ bool CallFrameAddressIsValid(lldb::addr_t cfa) override {
+ // Make sure the stack call frame addresses are 8 byte aligned
+ if (cfa & (8ull - 1ull))
+ return false; // Not 8 byte aligned
+ if (cfa == 0)
+ return false; // Zero is not a valid stack address
+ return true;
+ }
+
+ bool CodeAddressIsValid(lldb::addr_t pc) override {
+ // We have a 64 bit address space, so anything is valid as opcodes
+ // aren't fixed width...
+ return true;
+ }
+
+ const lldb_private::RegisterInfo *
+ GetRegisterInfoArray(uint32_t &count) override;
+
+ //------------------------------------------------------------------
+ // Static Functions
+ //------------------------------------------------------------------
+
+ static void Initialize();
+
+ static void Terminate();
+
+ static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp,
+ const lldb_private::ArchSpec &arch);
+
+ static lldb_private::ConstString GetPluginNameStatic();
+
+ //------------------------------------------------------------------
+ // PluginInterface protocol
+ //------------------------------------------------------------------
+
+ lldb_private::ConstString GetPluginName() override;
+
+ uint32_t GetPluginVersion() override;
+
+protected:
+ void CreateRegisterMapIfNeeded();
+
+ lldb::ValueObjectSP
+ GetReturnValueObjectSimple(lldb_private::Thread &thread,
+ lldb_private::CompilerType &ast_type) const;
+
+ bool RegisterIsCalleeSaved(const lldb_private::RegisterInfo *reg_info);
+
+private:
+ ABISysV_ppc64le(lldb::ProcessSP process_sp) :
+ lldb_private::ABI(process_sp) {
+ // Call CreateInstance instead.
+ }
+};
+
+#endif // liblldb_ABISysV_ppc64le_h_
Index: source/Plugins/ABI/SysV-ppc64le/ABISysV_ppc64le.cpp
===================================================================
--- /dev/null
+++ source/Plugins/ABI/SysV-ppc64le/ABISysV_ppc64le.cpp
@@ -0,0 +1,616 @@
+//===-- ABISysV_ppc64le.cpp -------------------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "ABISysV_ppc64le.h"
+
+// C Includes
+// C++ Includes
+// Other libraries and framework includes
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/Triple.h"
+
+// Project includes
+#include "lldb/Core/Module.h"
+#include "lldb/Core/PluginManager.h"
+#include "lldb/Core/RegisterValue.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/Status.h"
+#include "Utility/PPC64LE_DWARF_Registers.h"
+
+#define DECLARE_REGISTER_INFOS_PPC64LE_STRUCT
+#include "Plugins/Process/Utility/RegisterInfos_ppc64le.h"
+#undef DECLARE_REGISTER_INFOS_PPC64LE_STRUCT
+
+using namespace lldb;
+using namespace lldb_private;
+
+static const uint32_t k_num_register_infos = llvm::array_lengthof(
+ g_register_infos_ppc64le);
+
+const lldb_private::RegisterInfo *
+ABISysV_ppc64le::GetRegisterInfoArray(uint32_t &count) {
+ count = k_num_register_infos;
+ return g_register_infos_ppc64le;
+}
+
+size_t ABISysV_ppc64le::GetRedZoneSize() const {
+ return 224;
+}
+
+//------------------------------------------------------------------
+// Static Functions
+//------------------------------------------------------------------
+
+ABISP ABISysV_ppc64le::CreateInstance(lldb::ProcessSP process_sp,
+ const ArchSpec &arch) {
+ static ABISP g_abi_sp;
+
+ if (arch.GetTriple().getArch() == llvm::Triple::ppc64le) {
+ if (!g_abi_sp)
+ g_abi_sp.reset(new ABISysV_ppc64le(process_sp));
+ return g_abi_sp;
+ }
+
+ return ABISP();
+}
+
+bool ABISysV_ppc64le::PrepareTrivialCall(Thread &thread, addr_t sp,
+ addr_t func_addr, addr_t return_addr, llvm::ArrayRef<addr_t> args) const {
+ Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
+
+ if (log) {
+ StreamString s;
+
+ s.Printf("ABISysV_ppc64le::PrepareTrivialCall (tid = 0x%" PRIx64
+ ", sp = 0x%" PRIx64 ", func_addr = 0x%" PRIx64
+ ", return_addr = 0x%" PRIx64,
+ thread.GetID(), (uint64_t)sp, (uint64_t)func_addr,
+ (uint64_t)return_addr);
+
+ for (size_t i = 0; i < args.size(); ++i)
+ s.Printf(", arg%" PRIu64 " = 0x%" PRIx64, static_cast<uint64_t>(i + 1),
+ args[i]);
+
+ s.PutCString(")");
+ log->PutString(s.GetString());
+ }
+
+ RegisterContext *reg_ctx = thread.GetRegisterContext().get();
+ if (!reg_ctx)
+ return false;
+
+ const RegisterInfo *reg_info = nullptr;
+
+ if (args.size() > 8) // TODO handle more than 8 arguments.
+ return false;
+
+ for (size_t i = 0; i < args.size(); ++i) {
+ reg_info = reg_ctx->GetRegisterInfo(eRegisterKindGeneric,
+ LLDB_REGNUM_GENERIC_ARG1 + i);
+
+ if (log)
+ log->Printf("About to write arg%" PRIu64 " (0x%" PRIx64 ") into %s",
+ static_cast<uint64_t>(i + 1), args[i], reg_info->name);
+
+ if (!reg_ctx->WriteRegisterFromUnsigned(reg_info, args[i]))
+ return false;
+ }
+
+ // First, align the SP.
+ if (log)
+ log->Printf("16-byte aligning SP: 0x%" PRIx64 " to 0x%" PRIx64,
+ (uint64_t)sp, (uint64_t)(sp & ~0xfull));
+
+ sp &= ~(0xfull); // 16-byte alignment.
+ sp -= 32; // allocate frame to save TOC, RA and SP.
+
+ Status error;
+ uint64_t reg_value;
+ const RegisterInfo *pc_reg_info =
+ reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC);
+ const RegisterInfo *sp_reg_info =
+ reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_SP);
+ ProcessSP process_sp(thread.GetProcess());
+ const RegisterInfo *lr_reg_info =
+ reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_RA);
+ const RegisterInfo *r2_reg_info = reg_ctx->GetRegisterInfoAtIndex(2);
+ const RegisterInfo *r12_reg_info = reg_ctx->GetRegisterInfoAtIndex(12);
+
+ // Save return address onto the stack.
+ if (log)
+ log->Printf("Pushing the return address onto the stack: 0x%" PRIx64
+ "(+16): 0x%" PRIx64, (uint64_t)sp, (uint64_t)return_addr);
+ if (!process_sp->WritePointerToMemory(sp + 16, return_addr, error))
+ return false;
+
+ // Write the return address to link register.
+ if (log)
+ log->Printf("Writing LR: 0x%" PRIx64, (uint64_t)return_addr);
+ if (!reg_ctx->WriteRegisterFromUnsigned(lr_reg_info, return_addr))
+ return false;
+
+ // Write target address to r12 register.
+ if (log)
+ log->Printf("Writing R12: 0x%" PRIx64, (uint64_t)func_addr);
+ if (!reg_ctx->WriteRegisterFromUnsigned(r12_reg_info, func_addr))
+ return false;
+
+ // Read TOC pointer value.
+ reg_value = reg_ctx->ReadRegisterAsUnsigned(r2_reg_info, 0);
+
+ // Write TOC pointer onto the stack.
+ if (log)
+ log->Printf("Writing R2 (TOC) at SP(0x%" PRIx64 ")+24: 0x%" PRIx64,
+ (uint64_t)sp+24, (uint64_t)reg_value);
+ if (!process_sp->WritePointerToMemory(sp + 24, reg_value, error))
+ return false;
+
+ // Read the current SP value.
+ reg_value = reg_ctx->ReadRegisterAsUnsigned(sp_reg_info, 0);
+
+ // Save current SP onto the stack.
+ if (log)
+ log->Printf("Writing SP at SP(0x%" PRIx64 ")+0: 0x%" PRIx64,
+ (uint64_t)sp, (uint64_t)reg_value);
+ if (!process_sp->WritePointerToMemory(sp, reg_value, error))
+ return false;
+
+ // %r1 is set to the actual stack value.
+ if (log)
+ log->Printf("Writing SP: 0x%" PRIx64, (uint64_t)sp);
+
+ if (!reg_ctx->WriteRegisterFromUnsigned(sp_reg_info, sp))
+ return false;
+
+ // %pc is set to the address of the called function.
+ if (log)
+ log->Printf("Writing IP: 0x%" PRIx64, (uint64_t)func_addr);
+ if (!reg_ctx->WriteRegisterFromUnsigned(pc_reg_info, func_addr))
+ return false;
+
+ return true;
+}
+
+static bool ReadIntegerArgument(Scalar &scalar, unsigned int bit_width,
+ bool is_signed, Thread &thread, uint32_t *argument_register_ids,
+ unsigned int ¤t_argument_register, addr_t ¤t_stack_argument) {
+ if (bit_width > 64)
+ return false; // Scalar can't hold large integer arguments.
+
+ if (current_argument_register < 6) {
+ scalar = thread.GetRegisterContext()->ReadRegisterAsUnsigned(
+ argument_register_ids[current_argument_register], 0);
+ current_argument_register++;
+
+ if (is_signed)
+ scalar.SignExtend(bit_width);
+ } else {
+ uint32_t byte_size = (bit_width + (8 - 1)) / 8;
+ Status error;
+
+ if (thread.GetProcess()->ReadScalarIntegerFromMemory(current_stack_argument,
+ byte_size, is_signed, scalar, error)) {
+ current_stack_argument += byte_size;
+ return true;
+ }
+
+ return false;
+ }
+
+ return true;
+}
+
+bool ABISysV_ppc64le::GetArgumentValues(Thread &thread,
+ ValueList &values) const {
+ unsigned int num_values = values.GetSize();
+ unsigned int value_index;
+
+ // Extract the register context so we can read arguments from registers.
+ RegisterContext *reg_ctx = thread.GetRegisterContext().get();
+ if (!reg_ctx)
+ return false;
+
+ // Get the pointer to the first stack argument so we have a place to start
+ // when reading data.
+ addr_t sp = reg_ctx->GetSP(0);
+
+ if (!sp)
+ return false;
+
+ addr_t current_stack_argument = sp + 48; // jump over return address.
+ uint32_t argument_register_ids[8];
+
+ for (size_t i = 0; i < 8; ++i) {
+ argument_register_ids[i] = reg_ctx->GetRegisterInfo(eRegisterKindGeneric,
+ LLDB_REGNUM_GENERIC_ARG1 + i)->kinds[eRegisterKindLLDB];
+ }
+
+ unsigned int current_argument_register = 0;
+ for (value_index = 0; value_index < num_values; ++value_index) {
+ Value *value = values.GetValueAtIndex(value_index);
+
+ if (!value)
+ return false;
+
+ // We currently only support extracting values with Clang QualTypes.
+ // Do we care about others?
+ CompilerType compiler_type = value->GetCompilerType();
+ if (!compiler_type)
+ return false;
+ bool is_signed;
+
+ if (compiler_type.IsIntegerOrEnumerationType(is_signed)) {
+ ReadIntegerArgument(value->GetScalar(), compiler_type.GetBitSize(&thread),
+ is_signed, thread, argument_register_ids, current_argument_register,
+ current_stack_argument);
+ } else if (compiler_type.IsPointerType()) {
+ ReadIntegerArgument(value->GetScalar(), compiler_type.GetBitSize(&thread),
+ false, thread, argument_register_ids, current_argument_register,
+ current_stack_argument);
+ }
+ }
+
+ return true;
+}
+
+Status ABISysV_ppc64le::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;
+ }
+
+ bool is_signed;
+ uint32_t count;
+ bool is_complex;
+ Thread *thread = frame_sp->GetThread().get();
+ RegisterContext *reg_ctx = thread->GetRegisterContext().get();
+
+ bool set_it_simple = false;
+ if (compiler_type.IsIntegerOrEnumerationType(is_signed)
+ || compiler_type.IsPointerType()) {
+ const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoByName("r3", 0);
+
+ DataExtractor data;
+ Status data_error;
+ size_t num_bytes = new_value_sp->GetData(data, data_error);
+ if (data_error.Fail()) {
+ error.SetErrorStringWithFormat(
+ "Couldn't convert return value to raw data: %s",
+ data_error.AsCString());
+ return error;
+ }
+ lldb::offset_t offset = 0;
+ if (num_bytes <= 8) {
+ uint64_t raw_value = data.GetMaxU64(&offset, num_bytes);
+
+ if (reg_ctx->WriteRegisterFromUnsigned(reg_info, raw_value))
+ set_it_simple = true;
+ } else {
+ error.SetErrorString("We don't support returning longer than 64 bit "
+ "integer values at present.");
+ }
+ } else if (compiler_type.IsFloatingPointType(count, is_complex)) {
+ if (is_complex)
+ error.SetErrorString(
+ "We don't support returning complex values at present");
+ else {
+ size_t bit_width = compiler_type.GetBitSize(frame_sp.get());
+ if (bit_width <= 64) {
+ DataExtractor data;
+ Status data_error;
+ size_t num_bytes = new_value_sp->GetData(data, data_error);
+ if (data_error.Fail()) {
+ error.SetErrorStringWithFormat(
+ "Couldn't convert return value to raw data: %s",
+ data_error.AsCString());
+ return error;
+ }
+
+ unsigned char buffer[16];
+ ByteOrder byte_order = data.GetByteOrder();
+
+ data.CopyByteOrderedData(0, num_bytes, buffer, 16, byte_order);
+ set_it_simple = true;
+ } else {
+ // FIXME - don't know how to do 80 bit long doubles yet.
+ error.SetErrorString(
+ "We don't support returning float values > 64 bits at present");
+ }
+ }
+ }
+
+ if (!set_it_simple) {
+ // Okay we've got a structure or something that doesn't fit in a simple
+ // register.
+ // We should figure out where it really goes, but we don't support this yet.
+ error.SetErrorString("We only support setting simple integer and float "
+ "return types at present.");
+ }
+
+ return error;
+}
+
+ValueObjectSP ABISysV_ppc64le::GetReturnValueObjectSimple(Thread &thread,
+ CompilerType &return_compiler_type) const {
+ ValueObjectSP return_valobj_sp;
+ Value value;
+
+ if (!return_compiler_type)
+ return return_valobj_sp;
+
+ // value.SetContext (Value::eContextTypeClangType, return_value_type);
+ 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();
+ if (type_flags & eTypeIsScalar) {
+ value.SetValueType(Value::eValueTypeScalar);
+
+ bool success = false;
+ if (type_flags & eTypeIsInteger) {
+ // Extract the register context so we can read arguments from registers
+ const size_t byte_size = return_compiler_type.GetByteSize(nullptr);
+ uint64_t raw_value = thread.GetRegisterContext()->ReadRegisterAsUnsigned(
+ reg_ctx->GetRegisterInfoByName("r3", 0), 0);
+ const bool is_signed = (type_flags & eTypeIsSigned) != 0;
+ switch (byte_size) {
+ default:
+ break;
+
+ case sizeof(uint64_t):
+ if (is_signed)
+ value.GetScalar() = (int64_t)(raw_value);
+ else
+ value.GetScalar() = (uint64_t)(raw_value);
+ success = true;
+ break;
+
+ case sizeof(uint32_t):
+ if (is_signed)
+ value.GetScalar() = (int32_t)(raw_value & UINT32_MAX);
+ else
+ value.GetScalar() = (uint32_t)(raw_value & UINT32_MAX);
+ success = true;
+ break;
+
+ case sizeof(uint16_t):
+ if (is_signed)
+ value.GetScalar() = (int16_t)(raw_value & UINT16_MAX);
+ else
+ value.GetScalar() = (uint16_t)(raw_value & UINT16_MAX);
+ success = true;
+ break;
+
+ case sizeof(uint8_t):
+ if (is_signed)
+ value.GetScalar() = (int8_t)(raw_value & UINT8_MAX);
+ else
+ value.GetScalar() = (uint8_t)(raw_value & UINT8_MAX);
+ success = true;
+ break;
+ }
+ } else if (type_flags & eTypeIsFloat) {
+ if (type_flags & eTypeIsComplex) {
+ // Don't handle complex yet.
+ } else {
+ const size_t byte_size = return_compiler_type.GetByteSize(nullptr);
+ if (byte_size <= sizeof(long double)) {
+ const RegisterInfo *f1_info = reg_ctx->GetRegisterInfoByName("f1", 0);
+ RegisterValue f1_value;
+ if (reg_ctx->ReadRegister(f1_info, f1_value)) {
+ DataExtractor data;
+ if (f1_value.GetData(data)) {
+ lldb::offset_t offset = 0;
+ if (byte_size == sizeof(float)) {
+ value.GetScalar() = (float) data.GetFloat(&offset);
+ success = true;
+ } else if (byte_size == sizeof(double)) {
+ value.GetScalar() = (double) data.GetDouble(&offset);
+ success = true;
+ }
+ }
+ }
+ }
+ }
+ }
+
+ if (success)
+ return_valobj_sp = ValueObjectConstResult::Create(
+ thread.GetStackFrameAtIndex(0).get(), value, ConstString(""));
+ } else if (type_flags & eTypeIsPointer) {
+ unsigned r3_id =
+ reg_ctx->GetRegisterInfoByName("r3", 0)->kinds[eRegisterKindLLDB];
+ value.GetScalar() =
+ (uint64_t) thread.GetRegisterContext()->ReadRegisterAsUnsigned(r3_id,
+ 0);
+ value.SetValueType(Value::eValueTypeScalar);
+ return_valobj_sp = ValueObjectConstResult::Create(
+ thread.GetStackFrameAtIndex(0).get(), value, ConstString(""));
+ } else if (type_flags & eTypeIsVector) {
+ const size_t byte_size = return_compiler_type.GetByteSize(nullptr);
+ if (byte_size > 0) {
+ const RegisterInfo *altivec_reg = reg_ctx->GetRegisterInfoByName("v2",
+ 0);
+ if (altivec_reg) {
+ if (byte_size <= altivec_reg->byte_size) {
+ ProcessSP process_sp(thread.GetProcess());
+ if (process_sp) {
+ std::unique_ptr < DataBufferHeap
+ > heap_data_ap(new DataBufferHeap(byte_size, 0));
+ const ByteOrder byte_order = process_sp->GetByteOrder();
+ RegisterValue reg_value;
+ if (reg_ctx->ReadRegister(altivec_reg, reg_value)) {
+ Status error;
+ if (reg_value.GetAsMemoryData(altivec_reg,
+ heap_data_ap->GetBytes(), heap_data_ap->GetByteSize(),
+ byte_order, error)) {
+ DataExtractor data(DataBufferSP(heap_data_ap.release()),
+ byte_order,
+ process_sp->GetTarget().GetArchitecture().GetAddressByteSize());
+ return_valobj_sp = ValueObjectConstResult::Create(&thread,
+ return_compiler_type, ConstString(""), data);
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+
+ return return_valobj_sp;
+}
+
+ValueObjectSP ABISysV_ppc64le::GetReturnValueObjectImpl(Thread &thread,
+ CompilerType &return_compiler_type) const {
+ return GetReturnValueObjectSimple(thread, return_compiler_type);
+}
+
+bool ABISysV_ppc64le::CreateFunctionEntryUnwindPlan(UnwindPlan &unwind_plan) {
+ unwind_plan.Clear();
+ unwind_plan.SetRegisterKind(eRegisterKindDWARF);
+
+ uint32_t lr_reg_num = ppc64le_dwarf::dwarf_lr_ppc64le;
+ uint32_t sp_reg_num = ppc64le_dwarf::dwarf_r1_ppc64le;
+ uint32_t pc_reg_num = ppc64le_dwarf::dwarf_pc_ppc64le;
+
+ UnwindPlan::RowSP row(new UnwindPlan::Row);
+
+ // Our Call Frame Address is the stack pointer value.
+ row->GetCFAValue().SetIsRegisterPlusOffset(sp_reg_num, 0);
+
+ // The previous PC is in the LR.
+ row->SetRegisterLocationToRegister(pc_reg_num, lr_reg_num, true);
+ unwind_plan.AppendRow(row);
+
+ // All other registers are the same.
+ unwind_plan.SetSourceName("ppc64le at-func-entry default");
+ unwind_plan.SetSourcedFromCompiler(eLazyBoolNo);
+
+ return true;
+}
+
+bool ABISysV_ppc64le::CreateDefaultUnwindPlan(UnwindPlan &unwind_plan) {
+ unwind_plan.Clear();
+ unwind_plan.SetRegisterKind(eRegisterKindDWARF);
+
+ uint32_t sp_reg_num = ppc64le_dwarf::dwarf_r1_ppc64le;
+ uint32_t pc_reg_num = ppc64le_dwarf::dwarf_lr_ppc64le;
+ UnwindPlan::RowSP row(new UnwindPlan::Row);
+ const int32_t ptr_size = 8;
+
+ row->GetCFAValue().SetIsRegisterDereferenced(sp_reg_num);
+ row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, ptr_size * 2, true);
+ row->SetRegisterLocationToIsCFAPlusOffset(sp_reg_num, 0, true);
+ row->SetRegisterLocationToAtCFAPlusOffset(ppc64le_dwarf::dwarf_cr_ppc64le,
+ ptr_size, true);
+
+ unwind_plan.AppendRow(row);
+ unwind_plan.SetSourceName("ppc64le default unwind plan");
+ unwind_plan.SetSourcedFromCompiler(eLazyBoolNo);
+ unwind_plan.SetUnwindPlanValidAtAllInstructions(eLazyBoolNo);
+ unwind_plan.SetReturnAddressRegister(ppc64le_dwarf::dwarf_lr_ppc64le);
+
+ return true;
+}
+
+bool ABISysV_ppc64le::RegisterIsVolatile(const RegisterInfo *reg_info) {
+ return !RegisterIsCalleeSaved(reg_info);
+}
+
+// See "Register Usage" in the
+// "System V Application Binary Interface"
+// "64-bit PowerPC ELF Application Binary Interface Supplement"
+// current version is 2 released 2015 at
+// https://members.openpowerfoundation.org/document/dl/576
+bool ABISysV_ppc64le::RegisterIsCalleeSaved(const RegisterInfo *reg_info) {
+ if (reg_info) {
+ // Preserved registers are :
+ // r1,r2,r13-r31
+ // cr2-cr4 (partially preserved)
+ // f14-f31 (not yet)
+ // v20-v31 (not yet)
+ // vrsave (not yet)
+
+ const char *name = reg_info->name;
+ if (name[0] == 'r') {
+ if ((name[1] == '1' || name[1] == '2') && name[2] == '\0')
+ return true;
+ if (name[1] == '1' && name[2] > '2')
+ return true;
+ if ((name[1] == '2' || name[1] == '3') && name[2] != '\0')
+ return true;
+ }
+
+ if (name[0] == 'f' && name[1] >= '0' && name[2] <= '9') {
+ if (name[2] == '\0')
+ return false;
+ if (name[1] == '1' && name[2] >= '4')
+ return true;
+ if ((name[1] == '2' || name[1] == '3') && name[2] != '\0')
+ return true;
+ }
+
+ 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 false;
+ if (name[0] == 'p' && name[1] == 'c' && name[2] == '\0') // pc
+ return true;
+ }
+ return false;
+}
+
+void ABISysV_ppc64le::Initialize() {
+ PluginManager::RegisterPlugin(GetPluginNameStatic(),
+ "System V ABI for ppc64le targets", CreateInstance);
+}
+
+void ABISysV_ppc64le::Terminate() {
+ PluginManager::UnregisterPlugin (CreateInstance);
+}
+
+lldb_private::ConstString ABISysV_ppc64le::GetPluginNameStatic() {
+ static ConstString g_name("sysv-ppc64le");
+ return g_name;
+}
+
+//------------------------------------------------------------------
+// PluginInterface protocol
+//------------------------------------------------------------------
+
+lldb_private::ConstString ABISysV_ppc64le::GetPluginName() {
+ return GetPluginNameStatic();
+}
+
+uint32_t ABISysV_ppc64le::GetPluginVersion() {
+ return 1;
+}
Index: source/Plugins/ABI/CMakeLists.txt
===================================================================
--- source/Plugins/ABI/CMakeLists.txt
+++ source/Plugins/ABI/CMakeLists.txt
@@ -3,6 +3,7 @@
add_subdirectory(SysV-hexagon)
add_subdirectory(SysV-ppc)
add_subdirectory(SysV-ppc64)
+add_subdirectory(SysV-ppc64le)
add_subdirectory(SysV-mips)
add_subdirectory(SysV-mips64)
add_subdirectory(SysV-s390x)
Index: source/API/SystemInitializerFull.cpp
===================================================================
--- source/API/SystemInitializerFull.cpp
+++ source/API/SystemInitializerFull.cpp
@@ -40,6 +40,7 @@
#include "Plugins/ABI/SysV-mips64/ABISysV_mips64.h"
#include "Plugins/ABI/SysV-ppc/ABISysV_ppc.h"
#include "Plugins/ABI/SysV-ppc64/ABISysV_ppc64.h"
+#include "Plugins/ABI/SysV-ppc64le/ABISysV_ppc64le.h"
#include "Plugins/ABI/SysV-s390x/ABISysV_s390x.h"
#include "Plugins/ABI/SysV-x86_64/ABISysV_x86_64.h"
#include "Plugins/Architecture/Arm/ArchitectureArm.h"
@@ -302,6 +303,7 @@
ABISysV_x86_64::Initialize();
ABISysV_ppc::Initialize();
ABISysV_ppc64::Initialize();
+ ABISysV_ppc64le::Initialize();
ABISysV_mips::Initialize();
ABISysV_mips64::Initialize();
ABISysV_s390x::Initialize();
@@ -431,6 +433,7 @@
ABISysV_x86_64::Terminate();
ABISysV_ppc::Terminate();
ABISysV_ppc64::Terminate();
+ ABISysV_ppc64le::Terminate();
ABISysV_mips::Terminate();
ABISysV_mips64::Terminate();
ABISysV_s390x::Terminate();
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