Archipelago » qemu

/*

 *  ARM micro operations

 *

 *  Copyright (c) 2003 Fabrice Bellard

 *  Copyright (c) 2005-2007 CodeSourcery, LLC

 *

 * 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 "exec.h"

void OPPROTO op_addl_T0_T1_cc(void)

{

    unsigned int src1;

    src1 = T0;

    T0 += T1;

    env->NZF = T0;

    env->CF = T0 < src1;

    env->VF = (src1 ^ T1 ^ -1) & (src1 ^ T0);

}

void OPPROTO op_adcl_T0_T1_cc(void)

{

    unsigned int src1;

    src1 = T0;

    if (!env->CF) {

        T0 += T1;

        env->CF = T0 < src1;

    } else {

        T0 += T1 + 1;

        env->CF = T0 <= src1;

    }

    env->VF = (src1 ^ T1 ^ -1) & (src1 ^ T0);

    env->NZF = T0;

    FORCE_RET();

}

#define OPSUB(sub, sbc, res, T0, T1)            \

                                                \

void OPPROTO op_ ## sub ## l_T0_T1_cc(void)     \

{                                               \

    unsigned int src1;                          \

    src1 = T0;                                  \

    T0 -= T1;                                   \

    env->NZF = T0;                              \

    env->CF = src1 >= T1;                       \

    env->VF = (src1 ^ T1) & (src1 ^ T0);        \

    res = T0;                                   \

}                                               \

                                                \

void OPPROTO op_ ## sbc ## l_T0_T1_cc(void)     \

{                                               \

    unsigned int src1;                          \

    src1 = T0;                                  \

    if (!env->CF) {                             \

        T0 = T0 - T1 - 1;                       \

        env->CF = src1 > T1;                    \

    } else {                                    \

        T0 = T0 - T1;                           \

        env->CF = src1 >= T1;                   \

    }                                           \

    env->VF = (src1 ^ T1) & (src1 ^ T0);        \

    env->NZF = T0;                              \

    res = T0;                                   \

    FORCE_RET();                                \

}

OPSUB(sub, sbc, T0, T0, T1)

OPSUB(rsb, rsc, T0, T1, T0)

/* memory access */

#define MEMSUFFIX _raw

#include "op_mem.h"

#if !defined(CONFIG_USER_ONLY)

#define MEMSUFFIX _user

#include "op_mem.h"

#define MEMSUFFIX _kernel

#include "op_mem.h"

#endif

void OPPROTO op_clrex(void)

{

    cpu_lock();

    helper_clrex(env);

    cpu_unlock();

}

/* T1 based, use T0 as shift count */

void OPPROTO op_shll_T1_T0(void)

{

    int shift;

    shift = T0 & 0xff;

    if (shift >= 32)

        T1 = 0;

    else

        T1 = T1 << shift;

    FORCE_RET();

}

void OPPROTO op_shrl_T1_T0(void)

{

    int shift;

    shift = T0 & 0xff;

    if (shift >= 32)

        T1 = 0;

    else

        T1 = (uint32_t)T1 >> shift;

    FORCE_RET();

}

void OPPROTO op_sarl_T1_T0(void)

{

    int shift;

    shift = T0 & 0xff;

    if (shift >= 32)

        shift = 31;

    T1 = (int32_t)T1 >> shift;

}

void OPPROTO op_rorl_T1_T0(void)

{

    int shift;

    shift = T0 & 0x1f;

    if (shift) {

        T1 = ((uint32_t)T1 >> shift) | (T1 << (32 - shift));

    }

    FORCE_RET();

}

/* T1 based, use T0 as shift count and compute CF */

void OPPROTO op_shll_T1_T0_cc(void)

{

    int shift;

    shift = T0 & 0xff;

    if (shift >= 32) {

        if (shift == 32)

            env->CF = T1 & 1;

        else

            env->CF = 0;

        T1 = 0;

    } else if (shift != 0) {

        env->CF = (T1 >> (32 - shift)) & 1;

        T1 = T1 << shift;

    }

    FORCE_RET();

}

void OPPROTO op_shrl_T1_T0_cc(void)

{

    int shift;

    shift = T0 & 0xff;

    if (shift >= 32) {

        if (shift == 32)

            env->CF = (T1 >> 31) & 1;

        else

            env->CF = 0;

        T1 = 0;

    } else if (shift != 0) {

        env->CF = (T1 >> (shift - 1)) & 1;

        T1 = (uint32_t)T1 >> shift;

    }

    FORCE_RET();

}

void OPPROTO op_sarl_T1_T0_cc(void)

{

    int shift;

    shift = T0 & 0xff;

    if (shift >= 32) {

        env->CF = (T1 >> 31) & 1;

        T1 = (int32_t)T1 >> 31;

    } else if (shift != 0) {

        env->CF = (T1 >> (shift - 1)) & 1;

        T1 = (int32_t)T1 >> shift;

    }

    FORCE_RET();

}

void OPPROTO op_rorl_T1_T0_cc(void)

{

    int shift1, shift;

    shift1 = T0 & 0xff;

    shift = shift1 & 0x1f;

    if (shift == 0) {

        if (shift1 != 0)

            env->CF = (T1 >> 31) & 1;

    } else {

        env->CF = (T1 >> (shift - 1)) & 1;

        T1 = ((uint32_t)T1 >> shift) | (T1 << (32 - shift));

    }

    FORCE_RET();

}

void OPPROTO op_movl_cp_T0(void)

{

    helper_set_cp(env, PARAM1, T0);

    FORCE_RET();

}

void OPPROTO op_movl_T0_cp(void)

{

    T0 = helper_get_cp(env, PARAM1);

    FORCE_RET();

}

void OPPROTO op_movl_cp15_T0(void)

{

    helper_set_cp15(env, PARAM1, T0);

    FORCE_RET();

}

void OPPROTO op_movl_T0_cp15(void)

{

    T0 = helper_get_cp15(env, PARAM1);

    FORCE_RET();

}

void OPPROTO op_v7m_mrs_T0(void)

{

    T0 = helper_v7m_mrs(env, PARAM1);

}

void OPPROTO op_v7m_msr_T0(void)

{

    helper_v7m_msr(env, PARAM1, T0);

}

void OPPROTO op_movl_T0_sp(void)

{

    if (PARAM1 == env->v7m.current_sp)

        T0 = env->regs[13];

    else

        T0 = env->v7m.other_sp;

    FORCE_RET();

}

#include "op_neon.h"

/* iwMMXt support */

#include "op_iwmmxt.c"