/*
 * Tiny Code Generator for QEMU
 *
 * Copyright (c) 2018 SiFive, Inc
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#ifndef RISCV_TCG_TARGET_H
#define RISCV_TCG_TARGET_H

#include "host/cpuinfo.h"

#define TCG_TARGET_INSN_UNIT_SIZE 4
#define TCG_TARGET_NB_REGS 64
#define MAX_CODE_GEN_BUFFER_SIZE  ((size_t)-1)

typedef enum {
    TCG_REG_ZERO, TCG_REG_RA,  TCG_REG_SP,  TCG_REG_GP,
    TCG_REG_TP,   TCG_REG_T0,  TCG_REG_T1,  TCG_REG_T2,
    TCG_REG_S0,   TCG_REG_S1,  TCG_REG_A0,  TCG_REG_A1,
    TCG_REG_A2,   TCG_REG_A3,  TCG_REG_A4,  TCG_REG_A5,
    TCG_REG_A6,   TCG_REG_A7,  TCG_REG_S2,  TCG_REG_S3,
    TCG_REG_S4,   TCG_REG_S5,  TCG_REG_S6,  TCG_REG_S7,
    TCG_REG_S8,   TCG_REG_S9,  TCG_REG_S10, TCG_REG_S11,
    TCG_REG_T3,   TCG_REG_T4,  TCG_REG_T5,  TCG_REG_T6,

    /* RISC-V V Extension registers */
    TCG_REG_V0,   TCG_REG_V1,  TCG_REG_V2,  TCG_REG_V3,
    TCG_REG_V4,   TCG_REG_V5,  TCG_REG_V6,  TCG_REG_V7,
    TCG_REG_V8,   TCG_REG_V9,  TCG_REG_V10, TCG_REG_V11,
    TCG_REG_V12,  TCG_REG_V13, TCG_REG_V14, TCG_REG_V15,
    TCG_REG_V16,  TCG_REG_V17, TCG_REG_V18, TCG_REG_V19,
    TCG_REG_V20,  TCG_REG_V21, TCG_REG_V22, TCG_REG_V23,
    TCG_REG_V24,  TCG_REG_V25, TCG_REG_V26, TCG_REG_V27,
    TCG_REG_V28,  TCG_REG_V29, TCG_REG_V30, TCG_REG_V31,

    /* aliases */
    TCG_AREG0          = TCG_REG_S0,
    TCG_GUEST_BASE_REG = TCG_REG_S1,
    TCG_REG_TMP0       = TCG_REG_T6,
    TCG_REG_TMP1       = TCG_REG_T5,
    TCG_REG_TMP2       = TCG_REG_T4,
} TCGReg;

/* used for function call generation */
#define TCG_REG_CALL_STACK              TCG_REG_SP
#define TCG_TARGET_STACK_ALIGN          16
#define TCG_TARGET_CALL_STACK_OFFSET    0
#define TCG_TARGET_CALL_ARG_I32         TCG_CALL_ARG_NORMAL
#define TCG_TARGET_CALL_ARG_I64         TCG_CALL_ARG_NORMAL
#define TCG_TARGET_CALL_ARG_I128        TCG_CALL_ARG_NORMAL
#define TCG_TARGET_CALL_RET_I128        TCG_CALL_RET_NORMAL

/* optional instructions */
#define TCG_TARGET_HAS_negsetcond_i32   1
#define TCG_TARGET_HAS_div_i32          1
#define TCG_TARGET_HAS_rem_i32          1
#define TCG_TARGET_HAS_div2_i32         0
#define TCG_TARGET_HAS_rot_i32          (cpuinfo & CPUINFO_ZBB)
#define TCG_TARGET_HAS_deposit_i32      0
#define TCG_TARGET_HAS_extract_i32      0
#define TCG_TARGET_HAS_sextract_i32     0
#define TCG_TARGET_HAS_extract2_i32     0
#define TCG_TARGET_HAS_add2_i32         1
#define TCG_TARGET_HAS_sub2_i32         1
#define TCG_TARGET_HAS_mulu2_i32        0
#define TCG_TARGET_HAS_muls2_i32        0
#define TCG_TARGET_HAS_muluh_i32        0
#define TCG_TARGET_HAS_mulsh_i32        0
#define TCG_TARGET_HAS_ext8s_i32        1
#define TCG_TARGET_HAS_ext16s_i32       1
#define TCG_TARGET_HAS_ext8u_i32        1
#define TCG_TARGET_HAS_ext16u_i32       1
#define TCG_TARGET_HAS_bswap16_i32      (cpuinfo & CPUINFO_ZBB)
#define TCG_TARGET_HAS_bswap32_i32      (cpuinfo & CPUINFO_ZBB)
#define TCG_TARGET_HAS_not_i32          1
#define TCG_TARGET_HAS_andc_i32         (cpuinfo & CPUINFO_ZBB)
#define TCG_TARGET_HAS_orc_i32          (cpuinfo & CPUINFO_ZBB)
#define TCG_TARGET_HAS_eqv_i32          (cpuinfo & CPUINFO_ZBB)
#define TCG_TARGET_HAS_nand_i32         0
#define TCG_TARGET_HAS_nor_i32          0
#define TCG_TARGET_HAS_clz_i32          (cpuinfo & CPUINFO_ZBB)
#define TCG_TARGET_HAS_ctz_i32          (cpuinfo & CPUINFO_ZBB)
#define TCG_TARGET_HAS_ctpop_i32        (cpuinfo & CPUINFO_ZBB)
#define TCG_TARGET_HAS_brcond2          1
#define TCG_TARGET_HAS_setcond2         1
#define TCG_TARGET_HAS_qemu_st8_i32     0

#define TCG_TARGET_HAS_negsetcond_i64   1
#define TCG_TARGET_HAS_div_i64          1
#define TCG_TARGET_HAS_rem_i64          1
#define TCG_TARGET_HAS_div2_i64         0
#define TCG_TARGET_HAS_rot_i64          (cpuinfo & CPUINFO_ZBB)
#define TCG_TARGET_HAS_deposit_i64      0
#define TCG_TARGET_HAS_extract_i64      0
#define TCG_TARGET_HAS_sextract_i64     0
#define TCG_TARGET_HAS_extract2_i64     0
#define TCG_TARGET_HAS_extr_i64_i32     1
#define TCG_TARGET_HAS_ext8s_i64        1
#define TCG_TARGET_HAS_ext16s_i64       1
#define TCG_TARGET_HAS_ext32s_i64       1
#define TCG_TARGET_HAS_ext8u_i64        1
#define TCG_TARGET_HAS_ext16u_i64       1
#define TCG_TARGET_HAS_ext32u_i64       1
#define TCG_TARGET_HAS_bswap16_i64      (cpuinfo & CPUINFO_ZBB)
#define TCG_TARGET_HAS_bswap32_i64      (cpuinfo & CPUINFO_ZBB)
#define TCG_TARGET_HAS_bswap64_i64      (cpuinfo & CPUINFO_ZBB)
#define TCG_TARGET_HAS_not_i64          1
#define TCG_TARGET_HAS_andc_i64         (cpuinfo & CPUINFO_ZBB)
#define TCG_TARGET_HAS_orc_i64          (cpuinfo & CPUINFO_ZBB)
#define TCG_TARGET_HAS_eqv_i64          (cpuinfo & CPUINFO_ZBB)
#define TCG_TARGET_HAS_nand_i64         0
#define TCG_TARGET_HAS_nor_i64          0
#define TCG_TARGET_HAS_clz_i64          (cpuinfo & CPUINFO_ZBB)
#define TCG_TARGET_HAS_ctz_i64          (cpuinfo & CPUINFO_ZBB)
#define TCG_TARGET_HAS_ctpop_i64        (cpuinfo & CPUINFO_ZBB)
#define TCG_TARGET_HAS_add2_i64         1
#define TCG_TARGET_HAS_sub2_i64         1
#define TCG_TARGET_HAS_mulu2_i64        0
#define TCG_TARGET_HAS_muls2_i64        0
#define TCG_TARGET_HAS_muluh_i64        1
#define TCG_TARGET_HAS_mulsh_i64        1

#define TCG_TARGET_HAS_qemu_ldst_i128   0

#define TCG_TARGET_HAS_tst              0

/* vector instructions */
#define TCG_TARGET_HAS_v64              (cpuinfo & CPUINFO_ZVE64X)
#define TCG_TARGET_HAS_v128             (cpuinfo & CPUINFO_ZVE64X)
#define TCG_TARGET_HAS_v256             (cpuinfo & CPUINFO_ZVE64X)
#define TCG_TARGET_HAS_andc_vec         0
#define TCG_TARGET_HAS_orc_vec          0
#define TCG_TARGET_HAS_nand_vec         0
#define TCG_TARGET_HAS_nor_vec          0
#define TCG_TARGET_HAS_eqv_vec          0
#define TCG_TARGET_HAS_not_vec          1
#define TCG_TARGET_HAS_neg_vec          1
#define TCG_TARGET_HAS_abs_vec          0
#define TCG_TARGET_HAS_roti_vec         1
#define TCG_TARGET_HAS_rots_vec         1
#define TCG_TARGET_HAS_rotv_vec         1
#define TCG_TARGET_HAS_shi_vec          1
#define TCG_TARGET_HAS_shs_vec          1
#define TCG_TARGET_HAS_shv_vec          1
#define TCG_TARGET_HAS_mul_vec          1
#define TCG_TARGET_HAS_sat_vec          1
#define TCG_TARGET_HAS_minmax_vec       1
#define TCG_TARGET_HAS_bitsel_vec       0
#define TCG_TARGET_HAS_cmpsel_vec       1

#define TCG_TARGET_HAS_tst_vec          0

#define TCG_TARGET_DEFAULT_MO (0)

#define TCG_TARGET_NEED_LDST_LABELS
#define TCG_TARGET_NEED_POOL_LABELS

#endif