Archipelago » qemu

/*

 *  MIPS emulation micro-operations for qemu.

 * 

 *  Copyright (c) 2004-2005 Jocelyn Mayer

 *  Copyright (c) 2006 Marius Groeger (FPU operations)

 *  Copyright (c) 2007 Thiemo Seufer (64-bit FPU support)

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 */

#include "config.h"

#include "exec.h"

#ifndef CALL_FROM_TB0

#define CALL_FROM_TB0(func) func()

#endif

#ifndef CALL_FROM_TB1

#define CALL_FROM_TB1(func, arg0) func(arg0)

#endif

#ifndef CALL_FROM_TB1_CONST16

#define CALL_FROM_TB1_CONST16(func, arg0) CALL_FROM_TB1(func, arg0)

#endif

#ifndef CALL_FROM_TB2

#define CALL_FROM_TB2(func, arg0, arg1) func(arg0, arg1)

#endif

#ifndef CALL_FROM_TB2_CONST16

#define CALL_FROM_TB2_CONST16(func, arg0, arg1)     \

        CALL_FROM_TB2(func, arg0, arg1)

#endif

#ifndef CALL_FROM_TB3

#define CALL_FROM_TB3(func, arg0, arg1, arg2) func(arg0, arg1, arg2)

#endif

#ifndef CALL_FROM_TB4

#define CALL_FROM_TB4(func, arg0, arg1, arg2, arg3) \

        func(arg0, arg1, arg2, arg3)

#endif

#define REG 1

#include "op_template.c"

#undef REG

#define REG 2

#include "op_template.c"

#undef REG

#define REG 3

#include "op_template.c"

#undef REG

#define REG 4

#include "op_template.c"

#undef REG

#define REG 5

#include "op_template.c"

#undef REG

#define REG 6

#include "op_template.c"

#undef REG

#define REG 7

#include "op_template.c"

#undef REG

#define REG 8

#include "op_template.c"

#undef REG

#define REG 9

#include "op_template.c"

#undef REG

#define REG 10

#include "op_template.c"

#undef REG

#define REG 11

#include "op_template.c"

#undef REG

#define REG 12

#include "op_template.c"

#undef REG

#define REG 13

#include "op_template.c"

#undef REG

#define REG 14

#include "op_template.c"

#undef REG

#define REG 15

#include "op_template.c"

#undef REG

#define REG 16

#include "op_template.c"

#undef REG

#define REG 17

#include "op_template.c"

#undef REG

#define REG 18

#include "op_template.c"

#undef REG

#define REG 19

#include "op_template.c"

#undef REG

#define REG 20

#include "op_template.c"

#undef REG

#define REG 21

#include "op_template.c"

#undef REG

#define REG 22

#include "op_template.c"

#undef REG

#define REG 23

#include "op_template.c"

#undef REG

#define REG 24

#include "op_template.c"

#undef REG

#define REG 25

#include "op_template.c"

#undef REG

#define REG 26

#include "op_template.c"

#undef REG

#define REG 27

#include "op_template.c"

#undef REG

#define REG 28

#include "op_template.c"

#undef REG

#define REG 29

#include "op_template.c"

#undef REG

#define REG 30

#include "op_template.c"

#undef REG

#define REG 31

#include "op_template.c"

#undef REG

#define TN

#include "op_template.c"

#undef TN

#define FREG 0

#include "fop_template.c"

#undef FREG

#define FREG 1

#include "fop_template.c"

#undef FREG

#define FREG 2

#include "fop_template.c"

#undef FREG

#define FREG 3

#include "fop_template.c"

#undef FREG

#define FREG 4

#include "fop_template.c"

#undef FREG

#define FREG 5

#include "fop_template.c"

#undef FREG

#define FREG 6

#include "fop_template.c"

#undef FREG

#define FREG 7

#include "fop_template.c"

#undef FREG

#define FREG 8

#include "fop_template.c"

#undef FREG

#define FREG 9

#include "fop_template.c"

#undef FREG

#define FREG 10

#include "fop_template.c"

#undef FREG

#define FREG 11

#include "fop_template.c"

#undef FREG

#define FREG 12

#include "fop_template.c"

#undef FREG

#define FREG 13

#include "fop_template.c"

#undef FREG

#define FREG 14

#include "fop_template.c"

#undef FREG

#define FREG 15

#include "fop_template.c"

#undef FREG

#define FREG 16

#include "fop_template.c"

#undef FREG

#define FREG 17

#include "fop_template.c"

#undef FREG

#define FREG 18

#include "fop_template.c"

#undef FREG

#define FREG 19

#include "fop_template.c"

#undef FREG

#define FREG 20

#include "fop_template.c"

#undef FREG

#define FREG 21

#include "fop_template.c"

#undef FREG

#define FREG 22

#include "fop_template.c"

#undef FREG

#define FREG 23

#include "fop_template.c"

#undef FREG

#define FREG 24

#include "fop_template.c"

#undef FREG

#define FREG 25

#include "fop_template.c"

#undef FREG

#define FREG 26

#include "fop_template.c"

#undef FREG

#define FREG 27

#include "fop_template.c"

#undef FREG

#define FREG 28

#include "fop_template.c"

#undef FREG

#define FREG 29

#include "fop_template.c"

#undef FREG

#define FREG 30

#include "fop_template.c"

#undef FREG

#define FREG 31

#include "fop_template.c"

#undef FREG

#define FTN

#include "fop_template.c"

#undef FTN

void op_dup_T0 (void)

{

    T2 = T0;

    RETURN();

}

void op_load_HI (void)

{

    T0 = env->HI;

    RETURN();

}

void op_store_HI (void)

{

    env->HI = T0;

    RETURN();

}

void op_load_LO (void)

{

    T0 = env->LO;

    RETURN();

}

void op_store_LO (void)

{

    env->LO = T0;

    RETURN();

}

/* Load and store */

#define MEMSUFFIX _raw

#include "op_mem.c"

#undef MEMSUFFIX

#if !defined(CONFIG_USER_ONLY)

#define MEMSUFFIX _user

#include "op_mem.c"

#undef MEMSUFFIX

#define MEMSUFFIX _kernel

#include "op_mem.c"

#undef MEMSUFFIX

#endif

/* Addresses computation */

void op_addr_add (void)

{

/* For compatibility with 32-bit code, data reference in user mode

   with Status_UX = 0 should be casted to 32-bit and sign extended.

   See the MIPS64 PRA manual, section 4.10. */

#ifdef TARGET_MIPS64

    if ((env->CP0_Status & (1 << CP0St_UM)) &&

        !(env->CP0_Status & (1 << CP0St_UX)))

        T0 = (int64_t)(int32_t)(T0 + T1);

    else

#endif

        T0 += T1;

    RETURN();

}

/* Arithmetic */

void op_add (void)

{

    T0 = (int32_t)((int32_t)T0 + (int32_t)T1);

    RETURN();

}

void op_addo (void)

{

    target_ulong tmp;

    tmp = (int32_t)T0;

    T0 = (int32_t)T0 + (int32_t)T1;

    if (((tmp ^ T1 ^ (-1)) & (T0 ^ T1)) >> 31) {

        /* operands of same sign, result different sign */

        CALL_FROM_TB1(do_raise_exception, EXCP_OVERFLOW);

    }

    T0 = (int32_t)T0;

    RETURN();

}

void op_sub (void)

{

    T0 = (int32_t)((int32_t)T0 - (int32_t)T1);

    RETURN();

}

void op_subo (void)

{

    target_ulong tmp;

    tmp = (int32_t)T0;

    T0 = (int32_t)T0 - (int32_t)T1;

    if (((tmp ^ T1) & (tmp ^ T0)) >> 31) {

        /* operands of different sign, first operand and result different sign */

        CALL_FROM_TB1(do_raise_exception, EXCP_OVERFLOW);

    }

    T0 = (int32_t)T0;

    RETURN();

}

void op_mul (void)

{

    T0 = (int32_t)((int32_t)T0 * (int32_t)T1);

    RETURN();

}

#if HOST_LONG_BITS < 64

void op_div (void)

{

    CALL_FROM_TB0(do_div);

    RETURN();

}

#else

void op_div (void)

{

    if (T1 != 0) {

        env->LO = (int32_t)((int64_t)(int32_t)T0 / (int32_t)T1);

        env->HI = (int32_t)((int64_t)(int32_t)T0 % (int32_t)T1);

    }

    RETURN();

}

#endif

void op_divu (void)

{

    if (T1 != 0) {

        env->LO = (int32_t)((uint32_t)T0 / (uint32_t)T1);

        env->HI = (int32_t)((uint32_t)T0 % (uint32_t)T1);

    }

    RETURN();

}

#ifdef TARGET_MIPS64

/* Arithmetic */

void op_dadd (void)

{

    T0 += T1;

    RETURN();

}

void op_daddo (void)

{

    target_long tmp;

    tmp = T0;

    T0 += T1;

    if (((tmp ^ T1 ^ (-1)) & (T0 ^ T1)) >> 63) {

        /* operands of same sign, result different sign */

        CALL_FROM_TB1(do_raise_exception, EXCP_OVERFLOW);

    }

    RETURN();

}

void op_dsub (void)

{

    T0 -= T1;

    RETURN();

}

void op_dsubo (void)

{

    target_long tmp;

    tmp = T0;

    T0 = (int64_t)T0 - (int64_t)T1;

    if (((tmp ^ T1) & (tmp ^ T0)) >> 63) {

        /* operands of different sign, first operand and result different sign */

        CALL_FROM_TB1(do_raise_exception, EXCP_OVERFLOW);

    }

    RETURN();

}

void op_dmul (void)

{

    T0 = (int64_t)T0 * (int64_t)T1;

    RETURN();

}

/* Those might call libgcc functions.  */

void op_ddiv (void)

{

    do_ddiv();

    RETURN();

}

#if TARGET_LONG_BITS > HOST_LONG_BITS

void op_ddivu (void)

{

    do_ddivu();

    RETURN();

}

#else

void op_ddivu (void)

{

    if (T1 != 0) {

        env->LO = T0 / T1;

        env->HI = T0 % T1;

    }

    RETURN();

}

#endif

#endif /* TARGET_MIPS64 */

/* Logical */

void op_and (void)

{

    T0 &= T1;

    RETURN();

}

void op_nor (void)

{

    T0 = ~(T0 | T1);

    RETURN();

}

void op_or (void)

{

    T0 |= T1;

    RETURN();

}

void op_xor (void)

{

    T0 ^= T1;

    RETURN();

}

void op_sll (void)

{

    T0 = (int32_t)((uint32_t)T0 << T1);

    RETURN();

}

void op_sra (void)

{

    T0 = (int32_t)((int32_t)T0 >> T1);

    RETURN();

}

void op_srl (void)

{

    T0 = (int32_t)((uint32_t)T0 >> T1);

    RETURN();

}

void op_rotr (void)

{

    target_ulong tmp;

    if (T1) {

       tmp = (int32_t)((uint32_t)T0 << (0x20 - T1));

       T0 = (int32_t)((uint32_t)T0 >> T1) | tmp;

    }

    RETURN();

}

void op_sllv (void)

{

    T0 = (int32_t)((uint32_t)T1 << ((uint32_t)T0 & 0x1F));

    RETURN();

}

void op_srav (void)

{

    T0 = (int32_t)((int32_t)T1 >> (T0 & 0x1F));

    RETURN();

}

void op_srlv (void)

{

    T0 = (int32_t)((uint32_t)T1 >> (T0 & 0x1F));

    RETURN();

}

void op_rotrv (void)

{

    target_ulong tmp;

    T0 &= 0x1F;

    if (T0) {

       tmp = (int32_t)((uint32_t)T1 << (0x20 - T0));

       T0 = (int32_t)((uint32_t)T1 >> T0) | tmp;

    } else

       T0 = T1;

    RETURN();

}

void op_clo (void)

{

    int n;

    if (T0 == ~((target_ulong)0)) {

        T0 = 32;

    } else {

        for (n = 0; n < 32; n++) {

            if (!(T0 & (1 << 31)))

                break;

            T0 = T0 << 1;

        }

        T0 = n;

    }

    RETURN();

}

void op_clz (void)

{

    int n;

    if (T0 == 0) {

        T0 = 32;

    } else {

        for (n = 0; n < 32; n++) {

            if (T0 & (1 << 31))

                break;

            T0 = T0 << 1;

        }

        T0 = n;

    }

    RETURN();

}

#ifdef TARGET_MIPS64

#if TARGET_LONG_BITS > HOST_LONG_BITS

/* Those might call libgcc functions.  */

void op_dsll (void)

{

    CALL_FROM_TB0(do_dsll);

    RETURN();

}

void op_dsll32 (void)

{

    CALL_FROM_TB0(do_dsll32);

    RETURN();

}

void op_dsra (void)

{

    CALL_FROM_TB0(do_dsra);

    RETURN();

}

void op_dsra32 (void)

{

    CALL_FROM_TB0(do_dsra32);

    RETURN();

}

void op_dsrl (void)

{

    CALL_FROM_TB0(do_dsrl);

    RETURN();

}

void op_dsrl32 (void)

{

    CALL_FROM_TB0(do_dsrl32);

    RETURN();

}

void op_drotr (void)

{

    CALL_FROM_TB0(do_drotr);

    RETURN();

}

void op_drotr32 (void)

{

    CALL_FROM_TB0(do_drotr32);

    RETURN();

}

void op_dsllv (void)

{

    CALL_FROM_TB0(do_dsllv);

    RETURN();

}

void op_dsrav (void)

{

    CALL_FROM_TB0(do_dsrav);

    RETURN();

}

void op_dsrlv (void)

{

    CALL_FROM_TB0(do_dsrlv);

    RETURN();

}

void op_drotrv (void)

{

    CALL_FROM_TB0(do_drotrv);

    RETURN();

}

#else /* TARGET_LONG_BITS > HOST_LONG_BITS */

void op_dsll (void)

{

    T0 = T0 << T1;

    RETURN();

}

void op_dsll32 (void)

{

    T0 = T0 << (T1 + 32);

    RETURN();

}

void op_dsra (void)

{

    T0 = (int64_t)T0 >> T1;

    RETURN();

}

void op_dsra32 (void)

{

    T0 = (int64_t)T0 >> (T1 + 32);

    RETURN();

}

void op_dsrl (void)

{

    T0 = T0 >> T1;

    RETURN();

}

void op_dsrl32 (void)

{

    T0 = T0 >> (T1 + 32);

    RETURN();

}

void op_drotr (void)

{

    target_ulong tmp;

    if (T1) {

       tmp = T0 << (0x40 - T1);

       T0 = (T0 >> T1) | tmp;

    }

    RETURN();

}

void op_drotr32 (void)

{

    target_ulong tmp;

    if (T1) {

       tmp = T0 << (0x40 - (32 + T1));

       T0 = (T0 >> (32 + T1)) | tmp;

    }

    RETURN();

}

void op_dsllv (void)

{

    T0 = T1 << (T0 & 0x3F);

    RETURN();

}

void op_dsrav (void)

{

    T0 = (int64_t)T1 >> (T0 & 0x3F);

    RETURN();

}

void op_dsrlv (void)

{

    T0 = T1 >> (T0 & 0x3F);

    RETURN();

}

void op_drotrv (void)

{

    target_ulong tmp;

    T0 &= 0x3F;

    if (T0) {

       tmp = T1 << (0x40 - T0);

       T0 = (T1 >> T0) | tmp;

    } else

       T0 = T1;

    RETURN();

}

#endif /* TARGET_LONG_BITS > HOST_LONG_BITS */

void op_dclo (void)

{

    int n;

    if (T0 == ~((target_ulong)0)) {

        T0 = 64;

    } else {

        for (n = 0; n < 64; n++) {

            if (!(T0 & (1ULL << 63)))

                break;

            T0 = T0 << 1;

        }

        T0 = n;

    }

    RETURN();

}

void op_dclz (void)

{

    int n;

    if (T0 == 0) {

        T0 = 64;

    } else {

        for (n = 0; n < 64; n++) {

            if (T0 & (1ULL << 63))

                break;

            T0 = T0 << 1;

        }

        T0 = n;

    }

    RETURN();

}

#endif

/* 64 bits arithmetic */

#if TARGET_LONG_BITS > HOST_LONG_BITS

void op_mult (void)

{

    CALL_FROM_TB0(do_mult);

    RETURN();

}

void op_multu (void)

{

    CALL_FROM_TB0(do_multu);

    RETURN();

}

void op_madd (void)

{

    CALL_FROM_TB0(do_madd);

    RETURN();

}

void op_maddu (void)

{

    CALL_FROM_TB0(do_maddu);

    RETURN();

}

void op_msub (void)

{

    CALL_FROM_TB0(do_msub);

    RETURN();

}

void op_msubu (void)

{

    CALL_FROM_TB0(do_msubu);

    RETURN();

}

#else /* TARGET_LONG_BITS > HOST_LONG_BITS */

static inline uint64_t get_HILO (void)

{

    return ((uint64_t)env->HI << 32) | ((uint64_t)(uint32_t)env->LO);

}

static inline void set_HILO (uint64_t HILO)

{

    env->LO = (int32_t)(HILO & 0xFFFFFFFF);

    env->HI = (int32_t)(HILO >> 32);

}

void op_mult (void)

{

    set_HILO((int64_t)(int32_t)T0 * (int64_t)(int32_t)T1);

    RETURN();

}

void op_multu (void)

{

    set_HILO((uint64_t)(uint32_t)T0 * (uint64_t)(uint32_t)T1);

    RETURN();

}

void op_madd (void)

{

    int64_t tmp;

    tmp = ((int64_t)(int32_t)T0 * (int64_t)(int32_t)T1);

    set_HILO((int64_t)get_HILO() + tmp);

    RETURN();

}

void op_maddu (void)

{

    uint64_t tmp;

    tmp = ((uint64_t)(uint32_t)T0 * (uint64_t)(uint32_t)T1);

    set_HILO(get_HILO() + tmp);

    RETURN();

}

void op_msub (void)

{

    int64_t tmp;

    tmp = ((int64_t)(int32_t)T0 * (int64_t)(int32_t)T1);

    set_HILO((int64_t)get_HILO() - tmp);

    RETURN();

}

void op_msubu (void)

{

    uint64_t tmp;

    tmp = ((uint64_t)(uint32_t)T0 * (uint64_t)(uint32_t)T1);

    set_HILO(get_HILO() - tmp);

    RETURN();

}

#endif /* TARGET_LONG_BITS > HOST_LONG_BITS */

#ifdef TARGET_MIPS64

void op_dmult (void)

{

    CALL_FROM_TB4(muls64, &(env->HI), &(env->LO), T0, T1);

    RETURN();

}

void op_dmultu (void)

{

    CALL_FROM_TB4(mulu64, &(env->HI), &(env->LO), T0, T1);

    RETURN();

}

#endif

/* Conditional moves */

void op_movn (void)

{

    if (T1 != 0)

        env->gpr[PARAM1] = T0;

    RETURN();

}

void op_movz (void)

{

    if (T1 == 0)

        env->gpr[PARAM1] = T0;

    RETURN();

}

void op_movf (void)