129 lines
4.7 KiB
C++
129 lines
4.7 KiB
C++
//===-- ABISysV_riscv.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 liblldb_ABISysV_riscv_h_
|
|
#define liblldb_ABISysV_riscv_h_
|
|
|
|
// Other libraries and framework includes
|
|
#include "llvm/TargetParser/Triple.h"
|
|
|
|
// Project includes
|
|
#include "lldb/Target/ABI.h"
|
|
#include "lldb/Target/Process.h"
|
|
#include "lldb/Utility/Flags.h"
|
|
#include "lldb/lldb-private.h"
|
|
|
|
class ABISysV_riscv : public lldb_private::RegInfoBasedABI {
|
|
public:
|
|
~ABISysV_riscv() override = default;
|
|
|
|
size_t GetRedZoneSize() const override { return 0; }
|
|
|
|
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;
|
|
|
|
// Special thread plan for GDB style non-jit function calls.
|
|
bool
|
|
PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp,
|
|
lldb::addr_t functionAddress, lldb::addr_t returnAddress,
|
|
llvm::Type &prototype,
|
|
llvm::ArrayRef<ABI::CallArgument> 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;
|
|
|
|
// Specialized to work with llvm IR types.
|
|
lldb::ValueObjectSP GetReturnValueObjectImpl(lldb_private::Thread &thread,
|
|
llvm::Type &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;
|
|
|
|
bool CallFrameAddressIsValid(lldb::addr_t cfa) override {
|
|
// The CFA must be 128 bit aligned, unless the E ABI is used
|
|
lldb_private::ArchSpec arch = GetProcessSP()->GetTarget().GetArchitecture();
|
|
lldb_private::Flags arch_flags = arch.GetFlags();
|
|
if (arch_flags.Test(lldb_private::ArchSpec::eRISCV_rve))
|
|
return (cfa & 0x3ull) == 0;
|
|
return (cfa & 0xfull) == 0;
|
|
}
|
|
|
|
void SetIsRV64(bool is_rv64) { m_is_rv64 = is_rv64; }
|
|
|
|
bool CodeAddressIsValid(lldb::addr_t pc) override {
|
|
// Calls can use the least significant bit to store auxiliary information,
|
|
// so no strict check is done for alignment.
|
|
|
|
lldb_private::ArchSpec arch = GetProcessSP()->GetTarget().GetArchitecture();
|
|
|
|
// <addr> & 2 set is a fault if C extension is not used.
|
|
lldb_private::Flags arch_flags(arch.GetFlags());
|
|
if (!arch_flags.Test(lldb_private::ArchSpec::eRISCV_rvc) && (pc & 2))
|
|
return false;
|
|
|
|
// Make sure 64 bit addr_t only has lower 32 bits set on riscv32
|
|
llvm::Triple::ArchType machine = arch.GetMachine();
|
|
if (llvm::Triple::riscv32 == machine)
|
|
return (pc <= UINT32_MAX);
|
|
|
|
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 llvm::StringRef GetPluginNameStatic() { return "sysv-riscv"; }
|
|
|
|
//------------------------------------------------------------------
|
|
// PluginInterface protocol
|
|
//------------------------------------------------------------------
|
|
|
|
llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
|
|
|
|
protected:
|
|
void AugmentRegisterInfo(
|
|
std::vector<lldb_private::DynamicRegisterInfo::Register> ®s) override;
|
|
|
|
bool RegisterIsCalleeSaved(const lldb_private::RegisterInfo *reg_info);
|
|
|
|
private:
|
|
lldb::ValueObjectSP
|
|
GetReturnValueObjectSimple(lldb_private::Thread &thread,
|
|
lldb_private::CompilerType &ast_type) const;
|
|
|
|
using lldb_private::RegInfoBasedABI::RegInfoBasedABI; // Call CreateInstance
|
|
// instead.
|
|
bool m_is_rv64; // true if target is riscv64; false if target is riscv32
|
|
};
|
|
|
|
#endif // liblldb_ABISysV_riscv_h_
|