/src/capstonenext/arch/RISCV/RISCVInstPrinter.c

Source
//===-- RISCVInstPrinter.cpp - Convert RISCV MCInst to asm syntax ---------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This class prints an RISCV MCInst to a .s file.
//
//===----------------------------------------------------------------------===//

#ifdef CAPSTONE_HAS_RISCV

#include <stdio.h> // DEBUG
#include <stdlib.h>
#include <string.h>
#include <capstone/platform.h>

#include "RISCVInstPrinter.h"
#include "RISCVBaseInfo.h"
#include "../../MCInst.h"
#include "../../SStream.h"
#include "../../MCRegisterInfo.h"
#include "../../utils.h"
#include "../../Mapping.h"
#include "RISCVMapping.h"

//#include "RISCVDisassembler.h"

#define GET_REGINFO_ENUM
#define GET_REGINFO_MC_DESC
#include "RISCVGenRegisterInfo.inc"
#define GET_INSTRINFO_ENUM
#include "RISCVGenInstrInfo.inc"

// Autogenerated by tblgen.
static void printInstruction(MCInst *MI, SStream *O, MCRegisterInfo *MRI);
static bool printAliasInstr(MCInst *MI, SStream *OS, void *info);
static void printOperand(MCInst *MI, unsigned OpNo, SStream *O);
static void printFenceArg(MCInst *MI, unsigned OpNo, SStream *O);
static void printCSRSystemRegister(MCInst *, unsigned, SStream *);
static void printFRMArg(MCInst *MI, unsigned OpNo, SStream *O);
static void printCustomAliasOperand(MCInst *, unsigned, unsigned, SStream *);
/// getRegisterName - This method is automatically generated by tblgen
/// from the register set description.  This returns the assembler name
/// for the specified register.
static const char *getRegisterName(unsigned RegNo, unsigned AltIdx);

// Include the auto-generated portion of the assembly writer.
#define PRINT_ALIAS_INSTR
#include "RISCVGenAsmWriter.inc"

static void fixDetailOfEffectiveAddr(MCInst *MI)
{
  // Operands for load and store instructions in RISCV vary widely
  unsigned id = MI->flat_insn->id;
  unsigned reg = 0;
  int64_t imm = 0;
  uint8_t access = 0;

  switch (id) {
  case RISCV_INS_C_FLD:
  case RISCV_INS_C_LW:
  case RISCV_INS_C_FLW:
  case RISCV_INS_C_LD:
  case RISCV_INS_C_FSD:
  case RISCV_INS_C_SW:
  case RISCV_INS_C_FSW:
  case RISCV_INS_C_SD:
  case RISCV_INS_C_FLDSP:
  case RISCV_INS_C_LWSP:
  case RISCV_INS_C_FLWSP:
  case RISCV_INS_C_LDSP:
  case RISCV_INS_C_FSDSP:
  case RISCV_INS_C_SWSP:
  case RISCV_INS_C_FSWSP:
  case RISCV_INS_C_SDSP:
  case RISCV_INS_FLW:
  case RISCV_INS_FSW:
  case RISCV_INS_FLD:
  case RISCV_INS_FSD:
  case RISCV_INS_LB:
  case RISCV_INS_LBU:
  case RISCV_INS_LD:
  case RISCV_INS_LH:
  case RISCV_INS_LHU:
  case RISCV_INS_LW:
  case RISCV_INS_LWU:
  case RISCV_INS_SB:
  case RISCV_INS_SD:
  case RISCV_INS_SH:
  case RISCV_INS_SW: {
    CS_ASSERT(3 == MI->flat_insn->detail->riscv.op_count);
    CS_ASSERT(RISCV_OP_REG == RISCV_get_detail_op(MI, -3)->type);
    CS_ASSERT(RISCV_OP_IMM == RISCV_get_detail_op(MI, -2)->type);
    CS_ASSERT(RISCV_OP_REG == RISCV_get_detail_op(MI, -1)->type);

    imm = RISCV_get_detail_op(MI, -2)->imm;
    reg = RISCV_get_detail_op(MI, -1)->reg;
    access = RISCV_get_detail_op(MI, -1)->access;

    RISCV_get_detail_op(MI, -2)->type = RISCV_OP_MEM;
    RISCV_get_detail_op(MI, -2)->mem.base = reg;
    RISCV_get_detail_op(MI, -2)->mem.disp = imm;
    RISCV_get_detail_op(MI, -2)->access = access;

    RISCV_dec_op_count(MI);

    break;
  }
  case RISCV_INS_LR_W:
  case RISCV_INS_LR_W_AQ:
  case RISCV_INS_LR_W_AQ_RL:
  case RISCV_INS_LR_W_RL:
  case RISCV_INS_LR_D:
  case RISCV_INS_LR_D_AQ:
  case RISCV_INS_LR_D_AQ_RL:
  case RISCV_INS_LR_D_RL: {
    CS_ASSERT(2 == MI->flat_insn->detail->riscv.op_count);
    CS_ASSERT(RISCV_OP_REG == RISCV_get_detail_op(MI, -1)->type);
    CS_ASSERT(RISCV_OP_REG == RISCV_get_detail_op(MI, -2)->type);

    reg = RISCV_get_detail_op(MI, -1)->reg;

    RISCV_get_detail_op(MI, -1)->type = RISCV_OP_MEM;
    RISCV_get_detail_op(MI, -1)->mem.base = reg;
    RISCV_get_detail_op(MI, -1)->mem.disp = 0;

    break;
  }
  case RISCV_INS_SC_W:
  case RISCV_INS_SC_W_AQ:
  case RISCV_INS_SC_W_AQ_RL:
  case RISCV_INS_SC_W_RL:
  case RISCV_INS_SC_D:
  case RISCV_INS_SC_D_AQ:
  case RISCV_INS_SC_D_AQ_RL:
  case RISCV_INS_SC_D_RL:
  case RISCV_INS_AMOADD_D:
  case RISCV_INS_AMOADD_D_AQ:
  case RISCV_INS_AMOADD_D_AQ_RL:
  case RISCV_INS_AMOADD_D_RL:
  case RISCV_INS_AMOADD_W:
  case RISCV_INS_AMOADD_W_AQ:
  case RISCV_INS_AMOADD_W_AQ_RL:
  case RISCV_INS_AMOADD_W_RL:
  case RISCV_INS_AMOAND_D:
  case RISCV_INS_AMOAND_D_AQ:
  case RISCV_INS_AMOAND_D_AQ_RL:
  case RISCV_INS_AMOAND_D_RL:
  case RISCV_INS_AMOAND_W:
  case RISCV_INS_AMOAND_W_AQ:
  case RISCV_INS_AMOAND_W_AQ_RL:
  case RISCV_INS_AMOAND_W_RL:
  case RISCV_INS_AMOMAXU_D:
  case RISCV_INS_AMOMAXU_D_AQ:
  case RISCV_INS_AMOMAXU_D_AQ_RL:
  case RISCV_INS_AMOMAXU_D_RL:
  case RISCV_INS_AMOMAXU_W:
  case RISCV_INS_AMOMAXU_W_AQ:
  case RISCV_INS_AMOMAXU_W_AQ_RL:
  case RISCV_INS_AMOMAXU_W_RL:
  case RISCV_INS_AMOMAX_D:
  case RISCV_INS_AMOMAX_D_AQ:
  case RISCV_INS_AMOMAX_D_AQ_RL:
  case RISCV_INS_AMOMAX_D_RL:
  case RISCV_INS_AMOMAX_W:
  case RISCV_INS_AMOMAX_W_AQ:
  case RISCV_INS_AMOMAX_W_AQ_RL:
  case RISCV_INS_AMOMAX_W_RL:
  case RISCV_INS_AMOMINU_D:
  case RISCV_INS_AMOMINU_D_AQ:
  case RISCV_INS_AMOMINU_D_AQ_RL:
  case RISCV_INS_AMOMINU_D_RL:
  case RISCV_INS_AMOMINU_W:
  case RISCV_INS_AMOMINU_W_AQ:
  case RISCV_INS_AMOMINU_W_AQ_RL:
  case RISCV_INS_AMOMINU_W_RL:
  case RISCV_INS_AMOMIN_D:
  case RISCV_INS_AMOMIN_D_AQ:
  case RISCV_INS_AMOMIN_D_AQ_RL:
  case RISCV_INS_AMOMIN_D_RL:
  case RISCV_INS_AMOMIN_W:
  case RISCV_INS_AMOMIN_W_AQ:
  case RISCV_INS_AMOMIN_W_AQ_RL:
  case RISCV_INS_AMOMIN_W_RL:
  case RISCV_INS_AMOOR_D:
  case RISCV_INS_AMOOR_D_AQ:
  case RISCV_INS_AMOOR_D_AQ_RL:
  case RISCV_INS_AMOOR_D_RL:
  case RISCV_INS_AMOOR_W:
  case RISCV_INS_AMOOR_W_AQ:
  case RISCV_INS_AMOOR_W_AQ_RL:
  case RISCV_INS_AMOOR_W_RL:
  case RISCV_INS_AMOSWAP_D:
  case RISCV_INS_AMOSWAP_D_AQ:
  case RISCV_INS_AMOSWAP_D_AQ_RL:
  case RISCV_INS_AMOSWAP_D_RL:
  case RISCV_INS_AMOSWAP_W:
  case RISCV_INS_AMOSWAP_W_AQ:
  case RISCV_INS_AMOSWAP_W_AQ_RL:
  case RISCV_INS_AMOSWAP_W_RL:
  case RISCV_INS_AMOXOR_D:
  case RISCV_INS_AMOXOR_D_AQ:
  case RISCV_INS_AMOXOR_D_AQ_RL:
  case RISCV_INS_AMOXOR_D_RL:
  case RISCV_INS_AMOXOR_W:
  case RISCV_INS_AMOXOR_W_AQ:
  case RISCV_INS_AMOXOR_W_AQ_RL:
  case RISCV_INS_AMOXOR_W_RL: {
    CS_ASSERT(3 == MI->flat_insn->detail->riscv.op_count);
    CS_ASSERT(RISCV_OP_REG == RISCV_get_detail_op(MI, -3)->type);
    CS_ASSERT(RISCV_OP_REG == RISCV_get_detail_op(MI, -2)->type);
    CS_ASSERT(RISCV_OP_REG == RISCV_get_detail_op(MI, -1)->type);

    reg = RISCV_get_detail_op(MI, -1)->reg;

    RISCV_get_detail_op(MI, -1)->type = RISCV_OP_MEM;
    RISCV_get_detail_op(MI, -1)->mem.base = reg;
    RISCV_get_detail_op(MI, -1)->mem.disp = 0;

    break;
  }
  default: {
    CS_ASSERT(0 && "id is not a RISC-V memory instruction");
    break;
  }
  }
  return;
}

//void RISCVInstPrinter::printInst(const MCInst *MI, raw_ostream &O,
//                                 StringRef Annot, const MCSubtargetInfo &STI)
void RISCV_printInst(MCInst *MI, SStream *O, void *info)
{
  MCRegisterInfo *MRI = (MCRegisterInfo *)info;
  //bool Res = false;
  //MCInst *NewMI = MI;
  // TODO: RISCV compressd instructions.
  //MCInst UncompressedMI;
  //if (!NoAliases)
  //Res = uncompressInst(UncompressedMI, *MI, MRI, STI);
  //if (Res)
  //NewMI = const_cast<MCInst *>(&UncompressedMI);
  if (/*NoAliases ||*/ !printAliasInstr(MI, O, info))
    printInstruction(MI, O, MRI);
  //printAnnotation(O, Annot);
  // fix load/store type insttuction
  if (MI->csh->detail_opt &&
      MI->flat_insn->detail->riscv.need_effective_addr)
    fixDetailOfEffectiveAddr(MI);

  return;
}

static void printRegName(SStream *OS, unsigned RegNo)
{
  SStream_concat0(OS, getRegisterName(RegNo, RISCV_ABIRegAltName));
}

/**
void RISCVInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
                                    raw_ostream &O, const char *Modifier) 
*/
static void printOperand(MCInst *MI, unsigned OpNo, SStream *O)
{
  unsigned reg;
  int64_t Imm = 0;

  RISCV_add_cs_detail(MI, OpNo);

  MCOperand *MO = MCInst_getOperand(MI, OpNo);

  if (MCOperand_isReg(MO)) {
    reg = MCOperand_getReg(MO);
    printRegName(O, reg);
  } else {
    CS_ASSERT(MCOperand_isImm(MO) &&
        "Unknown operand kind in printOperand");
    Imm = MCOperand_getImm(MO);
    if (Imm >= 0) {
      if (Imm > HEX_THRESHOLD)
        SStream_concat(O, "0x%" PRIx64, Imm);
      else
        SStream_concat(O, "%" PRIu64, Imm);
    } else {
      if (Imm < -HEX_THRESHOLD)
        SStream_concat(O, "-0x%" PRIx64, -Imm);
      else
        SStream_concat(O, "-%" PRIu64, -Imm);
    }
  }

  //CS_ASSERT(MO.isExpr() && "Unknown operand kind in printOperand");

  return;
}

static const char *getCSRSystemRegisterName(unsigned CsrNo)
{
  switch (CsrNo) {
  /*
   * From RISC-V Privileged Architecture Version 1.10.
   * In the same order as Table 2.5.
   */
  case 0x0000:
    return "ustatus";
  case 0x0004:
    return "uie";
  case 0x0005:
    return "utvec";

  case 0x0040:
    return "uscratch";
  case 0x0041:
    return "uepc";
  case 0x0042:
    return "ucause";
  case 0x0043:
    return "utval";
  case 0x0044:
    return "uip";

  case 0x0001:
    return "fflags";
  case 0x0002:
    return "frm";
  case 0x0003:
    return "fcsr";

  case 0x0c00:
    return "cycle";
  case 0x0c01:
    return "time";
  case 0x0c02:
    return "instret";
  case 0x0c03:
    return "hpmcounter3";
  case 0x0c04:
    return "hpmcounter4";
  case 0x0c05:
    return "hpmcounter5";
  case 0x0c06:
    return "hpmcounter6";
  case 0x0c07:
    return "hpmcounter7";
  case 0x0c08:
    return "hpmcounter8";
  case 0x0c09:
    return "hpmcounter9";
  case 0x0c0a:
    return "hpmcounter10";
  case 0x0c0b:
    return "hpmcounter11";
  case 0x0c0c:
    return "hpmcounter12";
  case 0x0c0d:
    return "hpmcounter13";
  case 0x0c0e:
    return "hpmcounter14";
  case 0x0c0f:
    return "hpmcounter15";
  case 0x0c10:
    return "hpmcounter16";
  case 0x0c11:
    return "hpmcounter17";
  case 0x0c12:
    return "hpmcounter18";
  case 0x0c13:
    return "hpmcounter19";
  case 0x0c14:
    return "hpmcounter20";
  case 0x0c15:
    return "hpmcounter21";
  case 0x0c16:
    return "hpmcounter22";
  case 0x0c17:
    return "hpmcounter23";
  case 0x0c18:
    return "hpmcounter24";
  case 0x0c19:
    return "hpmcounter25";
  case 0x0c1a:
    return "hpmcounter26";
  case 0x0c1b:
    return "hpmcounter27";
  case 0x0c1c:
    return "hpmcounter28";
  case 0x0c1d:
    return "hpmcounter29";
  case 0x0c1e:
    return "hpmcounter30";
  case 0x0c1f:
    return "hpmcounter31";
  case 0x0c80:
    return "cycleh";
  case 0x0c81:
    return "timeh";
  case 0x0c82:
    return "instreth";
  case 0x0c83:
    return "hpmcounter3h";
  case 0x0c84:
    return "hpmcounter4h";
  case 0x0c85:
    return "hpmcounter5h";
  case 0x0c86:
    return "hpmcounter6h";
  case 0x0c87:
    return "hpmcounter7h";
  case 0x0c88:
    return "hpmcounter8h";
  case 0x0c89:
    return "hpmcounter9h";
  case 0x0c8a:
    return "hpmcounter10h";
  case 0x0c8b:
    return "hpmcounter11h";
  case 0x0c8c:
    return "hpmcounter12h";
  case 0x0c8d:
    return "hpmcounter13h";
  case 0x0c8e:
    return "hpmcounter14h";
  case 0x0c8f:
    return "hpmcounter15h";
  case 0x0c90:
    return "hpmcounter16h";
  case 0x0c91:
    return "hpmcounter17h";
  case 0x0c92:
    return "hpmcounter18h";
  case 0x0c93:
    return "hpmcounter19h";
  case 0x0c94:
    return "hpmcounter20h";
  case 0x0c95:
    return "hpmcounter21h";
  case 0x0c96:
    return "hpmcounter22h";
  case 0x0c97:
    return "hpmcounter23h";
  case 0x0c98:
    return "hpmcounter24h";
  case 0x0c99:
    return "hpmcounter25h";
  case 0x0c9a:
    return "hpmcounter26h";
  case 0x0c9b:
    return "hpmcounter27h";
  case 0x0c9c:
    return "hpmcounter28h";
  case 0x0c9d:
    return "hpmcounter29h";
  case 0x0c9e:
    return "hpmcounter30h";
  case 0x0c9f:
    return "hpmcounter31h";

  case 0x0100:
    return "sstatus";
  case 0x0102:
    return "sedeleg";
  case 0x0103:
    return "sideleg";
  case 0x0104:
    return "sie";
  case 0x0105:
    return "stvec";
  case 0x0106:
    return "scounteren";

  case 0x0140:
    return "sscratch";
  case 0x0141:
    return "sepc";
  case 0x0142:
    return "scause";
  case 0x0143:
    return "stval";
  case 0x0144:
    return "sip";

  case 0x0180:
    return "satp";

  case 0x0f11:
    return "mvendorid";
  case 0x0f12:
    return "marchid";
  case 0x0f13:
    return "mimpid";
  case 0x0f14:
    return "mhartid";

  case 0x0300:
    return "mstatus";
  case 0x0301:
    return "misa";
  case 0x0302:
    return "medeleg";
  case 0x0303:
    return "mideleg";
  case 0x0304:
    return "mie";
  case 0x0305:
    return "mtvec";
  case 0x0306:
    return "mcounteren";

  case 0x0340:
    return "mscratch";
  case 0x0341:
    return "mepc";
  case 0x0342:
    return "mcause";
  case 0x0343:
    return "mtval";
  case 0x0344:
    return "mip";

  case 0x03a0:
    return "pmpcfg0";
  case 0x03a1:
    return "pmpcfg1";
  case 0x03a2:
    return "pmpcfg2";
  case 0x03a3:
    return "pmpcfg3";
  case 0x03b0:
    return "pmpaddr0";
  case 0x03b1:
    return "pmpaddr1";
  case 0x03b2:
    return "pmpaddr2";
  case 0x03b3:
    return "pmpaddr3";
  case 0x03b4:
    return "pmpaddr4";
  case 0x03b5:
    return "pmpaddr5";
  case 0x03b6:
    return "pmpaddr6";
  case 0x03b7:
    return "pmpaddr7";
  case 0x03b8:
    return "pmpaddr8";
  case 0x03b9:
    return "pmpaddr9";
  case 0x03ba:
    return "pmpaddr10";
  case 0x03bb:
    return "pmpaddr11";
  case 0x03bc:
    return "pmpaddr12";
  case 0x03bd:
    return "pmpaddr13";
  case 0x03be:
    return "pmpaddr14";
  case 0x03bf:
    return "pmpaddr15";

  case 0x0b00:
    return "mcycle";
  case 0x0b02:
    return "minstret";
  case 0x0b03:
    return "mhpmcounter3";
  case 0x0b04:
    return "mhpmcounter4";
  case 0x0b05:
    return "mhpmcounter5";
  case 0x0b06:
    return "mhpmcounter6";
  case 0x0b07:
    return "mhpmcounter7";
  case 0x0b08:
    return "mhpmcounter8";
  case 0x0b09:
    return "mhpmcounter9";
  case 0x0b0a:
    return "mhpmcounter10";
  case 0x0b0b:
    return "mhpmcounter11";
  case 0x0b0c:
    return "mhpmcounter12";
  case 0x0b0d:
    return "mhpmcounter13";
  case 0x0b0e:
    return "mhpmcounter14";
  case 0x0b0f:
    return "mhpmcounter15";
  case 0x0b10:
    return "mhpmcounter16";
  case 0x0b11:
    return "mhpmcounter17";
  case 0x0b12:
    return "mhpmcounter18";
  case 0x0b13:
    return "mhpmcounter19";
  case 0x0b14:
    return "mhpmcounter20";
  case 0x0b15:
    return "mhpmcounter21";
  case 0x0b16:
    return "mhpmcounter22";
  case 0x0b17:
    return "mhpmcounter23";
  case 0x0b18:
    return "mhpmcounter24";
  case 0x0b19:
    return "mhpmcounter25";
  case 0x0b1a:
    return "mhpmcounter26";
  case 0x0b1b:
    return "mhpmcounter27";
  case 0x0b1c:
    return "mhpmcounter28";
  case 0x0b1d:
    return "mhpmcounter29";
  case 0x0b1e:
    return "mhpmcounter30";
  case 0x0b1f:
    return "mhpmcounter31";
  case 0x0b80:
    return "mcycleh";
  case 0x0b82:
    return "minstreth";
  case 0x0b83:
    return "mhpmcounter3h";
  case 0x0b84:
    return "mhpmcounter4h";
  case 0x0b85:
    return "mhpmcounter5h";
  case 0x0b86:
    return "mhpmcounter6h";
  case 0x0b87:
    return "mhpmcounter7h";
  case 0x0b88:
    return "mhpmcounter8h";
  case 0x0b89:
    return "mhpmcounter9h";
  case 0x0b8a:
    return "mhpmcounter10h";
  case 0x0b8b:
    return "mhpmcounter11h";
  case 0x0b8c:
    return "mhpmcounter12h";
  case 0x0b8d:
    return "mhpmcounter13h";
  case 0x0b8e:
    return "mhpmcounter14h";
  case 0x0b8f:
    return "mhpmcounter15h";
  case 0x0b90:
    return "mhpmcounter16h";
  case 0x0b91:
    return "mhpmcounter17h";
  case 0x0b92:
    return "mhpmcounter18h";
  case 0x0b93:
    return "mhpmcounter19h";
  case 0x0b94:
    return "mhpmcounter20h";
  case 0x0b95:
    return "mhpmcounter21h";
  case 0x0b96:
    return "mhpmcounter22h";
  case 0x0b97:
    return "mhpmcounter23h";
  case 0x0b98:
    return "mhpmcounter24h";
  case 0x0b99:
    return "mhpmcounter25h";
  case 0x0b9a:
    return "mhpmcounter26h";
  case 0x0b9b:
    return "mhpmcounter27h";
  case 0x0b9c:
    return "mhpmcounter28h";
  case 0x0b9d:
    return "mhpmcounter29h";
  case 0x0b9e:
    return "mhpmcounter30h";
  case 0x0b9f:
    return "mhpmcounter31h";

  case 0x0323:
    return "mhpmevent3";
  case 0x0324:
    return "mhpmevent4";
  case 0x0325:
    return "mhpmevent5";
  case 0x0326:
    return "mhpmevent6";
  case 0x0327:
    return "mhpmevent7";
  case 0x0328:
    return "mhpmevent8";
  case 0x0329:
    return "mhpmevent9";
  case 0x032a:
    return "mhpmevent10";
  case 0x032b:
    return "mhpmevent11";
  case 0x032c:
    return "mhpmevent12";
  case 0x032d:
    return "mhpmevent13";
  case 0x032e:
    return "mhpmevent14";
  case 0x032f:
    return "mhpmevent15";
  case 0x0330:
    return "mhpmevent16";
  case 0x0331:
    return "mhpmevent17";
  case 0x0332:
    return "mhpmevent18";
  case 0x0333:
    return "mhpmevent19";
  case 0x0334:
    return "mhpmevent20";
  case 0x0335:
    return "mhpmevent21";
  case 0x0336:
    return "mhpmevent22";
  case 0x0337:
    return "mhpmevent23";
  case 0x0338:
    return "mhpmevent24";
  case 0x0339:
    return "mhpmevent25";
  case 0x033a:
    return "mhpmevent26";
  case 0x033b:
    return "mhpmevent27";
  case 0x033c:
    return "mhpmevent28";
  case 0x033d:
    return "mhpmevent29";
  case 0x033e:
    return "mhpmevent30";
  case 0x033f:
    return "mhpmevent31";

  case 0x07a0:
    return "tselect";
  case 0x07a1:
    return "tdata1";
  case 0x07a2:
    return "tdata2";
  case 0x07a3:
    return "tdata3";

  case 0x07b0:
    return "dcsr";
  case 0x07b1:
    return "dpc";
  case 0x07b2:
    return "dscratch";
  }
  return NULL;
}

static void printCSRSystemRegister(MCInst *MI, unsigned OpNo,
           //const MCSubtargetInfo &STI,
           SStream *O)
{
  unsigned Imm = MCOperand_getImm(MCInst_getOperand(MI, OpNo));
  const char *Name = getCSRSystemRegisterName(Imm);

  if (Name) {
    SStream_concat0(O, Name);
  } else {
    SStream_concat(O, "%u", Imm);
  }
}

static void printFenceArg(MCInst *MI, unsigned OpNo, SStream *O)
{
  unsigned FenceArg = MCOperand_getImm(MCInst_getOperand(MI, OpNo));
  //CS_ASSERT (((FenceArg >> 4) == 0) && "Invalid immediate in printFenceArg");

  if ((FenceArg & RISCVFenceField_I) != 0)
    SStream_concat0(O, "i");
  if ((FenceArg & RISCVFenceField_O) != 0)
    SStream_concat0(O, "o");
  if ((FenceArg & RISCVFenceField_R) != 0)
    SStream_concat0(O, "r");
  if ((FenceArg & RISCVFenceField_W) != 0)
    SStream_concat0(O, "w");
  if (FenceArg == 0)
    SStream_concat0(O, "unknown");
}

static void printFRMArg(MCInst *MI, unsigned OpNo, SStream *O)
{
  enum RoundingMode FRMArg = (enum RoundingMode)MCOperand_getImm(
    MCInst_getOperand(MI, OpNo));
#if 0
  auto FRMArg =
      static_cast<RISCVFPRndMode::RoundingMode>(MI->getOperand(OpNo).getImm());
  O << RISCVFPRndMode::roundingModeToString(FRMArg);
#endif
  SStream_concat0(O, roundingModeToString(FRMArg));
}

#endif // CAPSTONE_HAS_RISCV

Coverage Report

Created: 2026-01-17 06:58