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//===-- ABIWindows_x86_64.h ----------------------------------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
#ifndef LLDB_SOURCE_PLUGINS_ABI_X86_ABIWINDOWS_X86_64_H
#define LLDB_SOURCE_PLUGINS_ABI_X86_ABIWINDOWS_X86_64_H
#include "Plugins/ABI/X86/ABIX86_64.h"
class ABIWindows_x86_64 : public ABIX86_64 {
public:
~ABIWindows_x86_64() 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;
// In Windows_x86_64 ABI requires that the stack will be maintained 16-byte
// aligned.
// When ntdll invokes callbacks such as KiUserExceptionDispatcher or
// KiUserCallbackDispatcher, those functions won't have a properly 16-byte
// aligned stack - but tolerate unwinding through them by relaxing the
// requirement to 8 bytes.
bool CallFrameAddressIsValid(lldb::addr_t cfa) override {
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;
}
bool GetPointerReturnRegister(const char *&name) override;
//------------------------------------------------------------------
// Static Functions
//------------------------------------------------------------------
static void Initialize();
static void Terminate();
static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, const lldb_private::ArchSpec &arch);
static llvm::StringRef GetPluginNameStatic() { return "windows-x86_64"; }
//------------------------------------------------------------------
// PluginInterface protocol
//------------------------------------------------------------------
llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
protected:
void CreateRegisterMapIfNeeded();
lldb::ValueObjectSP
GetReturnValueObjectSimple(lldb_private::Thread &thread,
lldb_private::CompilerType &ast_type) const;
bool RegisterIsCalleeSaved(const lldb_private::RegisterInfo *reg_info);
uint32_t GetGenericNum(llvm::StringRef reg) override;
private:
using ABIX86_64::ABIX86_64; // Call CreateInstance instead.
};
#endif // LLDB_SOURCE_PLUGINS_ABI_X86_ABIWINDOWS_X86_64_H
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