src/arch/riscv/regs/int.hh

/*
 * Copyright (c) 2013 ARM Limited
 * Copyright (c) 2014-2015 Sven Karlsson
 * Copyright (c) 2019 Yifei Liu
 * Copyright (c) 2020 Barkhausen Institut
 * Copyright (c) 2021 StreamComputing Corp
 * All rights reserved
 *
 * The license below extends only to copyright in the software and shall
 * not be construed as granting a license to any other intellectual
 * property including but not limited to intellectual property relating
 * to a hardware implementation of the functionality of the software
 * licensed hereunder.  You may use the software subject to the license
 * terms below provided that you ensure that this notice is replicated
 * unmodified and in its entirety in all distributions of the software,
 * modified or unmodified, in source code or in binary form.
 *
 * Copyright (c) 2016 RISC-V Foundation
 * Copyright (c) 2016 The University of Virginia
 * All rights reserved.
 *
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 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
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 * this software without specific prior written permission.
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#ifndef __ARCH_RISCV_REGS_INT_HH__
#define __ARCH_RISCV_REGS_INT_HH__

#include <string>
#include <vector>

namespace gem5
{

namespace RiscvISA
{

const int NumIntArchRegs = 32;
const int NumMicroIntRegs = 1;
const int NumIntRegs = NumIntArchRegs + NumMicroIntRegs;

// Semantically meaningful register indices
const int ReturnAddrReg = 1;
const int StackPointerReg = 2;
const int ThreadPointerReg = 4;
const int ReturnValueReg = 10;
const std::vector<int> ArgumentRegs = {10, 11, 12, 13, 14, 15, 16, 17};
const int AMOTempReg = 32;

const int SyscallNumReg = 17;

const std::vector<std::string> IntRegNames = {
    "zero", "ra", "sp", "gp",
    "tp", "t0", "t1", "t2",
    "s0", "s1", "a0", "a1",
    "a2", "a3", "a4", "a5",
    "a6", "a7", "s2", "s3",
    "s4", "s5", "s6", "s7",
    "s8", "s9", "s10", "s11",
    "t3", "t4", "t5", "t6"
};

} // namespace RiscvISA
} // namespace gem5

#endif // __ARCH_RISCV_REGS_INT_HH__