path: root/target-sh4/op.c

/*
 *  SH4 emulation
 *
 *  Copyright (c) 2005 Samuel Tardieu
 *
 * 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"

static inline void set_t(void)
{
    env->sr |= SR_T;
}

static inline void clr_t(void)
{
    env->sr &= ~SR_T;
}

static inline void cond_t(int cond)
{
    if (cond)
	set_t();
    else
	clr_t();
}

void OPPROTO op_bf_s(void)
{
    env->delayed_pc = PARAM1;
    if (!(env->sr & SR_T)) {
        env->flags |= DELAY_SLOT_TRUE;
    }
    RETURN();
}

void OPPROTO op_bt_s(void)
{
    env->delayed_pc = PARAM1;
    if (env->sr & SR_T) {
        env->flags |= DELAY_SLOT_TRUE;
    }
    RETURN();
}

void OPPROTO op_store_flags(void)
{
    env->flags &= DELAY_SLOT_TRUE;
    env->flags |= PARAM1;
    RETURN();
}

void OPPROTO op_bra(void)
{
    env->delayed_pc = PARAM1;
    RETURN();
}

void OPPROTO op_braf_T0(void)
{
    env->delayed_pc = PARAM1 + T0;
    RETURN();
}

void OPPROTO op_bsr(void)
{
    env->pr = PARAM1;
    env->delayed_pc = PARAM2;
    RETURN();
}

void OPPROTO op_bsrf_T0(void)
{
    env->pr = PARAM1;
    env->delayed_pc = PARAM1 + T0;
    RETURN();
}

void OPPROTO op_jsr_T0(void)
{
    env->pr = PARAM1;
    env->delayed_pc = T0;
    RETURN();
}

void OPPROTO op_rts(void)
{
    env->delayed_pc = env->pr;
    RETURN();
}

void OPPROTO op_ldtlb(void)
{
    helper_ldtlb();
    RETURN();
}

void OPPROTO op_frchg(void)
{
    env->fpscr ^= FPSCR_FR;
    RETURN();
}

void OPPROTO op_fschg(void)
{
    env->fpscr ^= FPSCR_SZ;
    RETURN();
}

void OPPROTO op_rte(void)
{
    env->sr = env->ssr;
    env->delayed_pc = env->spc;
    RETURN();
}

void OPPROTO op_addc_T0_T1(void)
{
    helper_addc_T0_T1();
    RETURN();
}

void OPPROTO op_addv_T0_T1(void)
{
    helper_addv_T0_T1();
    RETURN();
}

void OPPROTO op_cmp_str_T0_T1(void)
{
    cond_t((T0 & 0x000000ff) == (T1 & 0x000000ff) ||
	   (T0 & 0x0000ff00) == (T1 & 0x0000ff00) ||
	   (T0 & 0x00ff0000) == (T1 & 0x00ff0000) ||
	   (T0 & 0xff000000) == (T1 & 0xff000000));
    RETURN();
}

void OPPROTO op_div0s_T0_T1(void)
{
    if (T1 & 0x80000000)
	env->sr |= SR_Q;
    else
	env->sr &= ~SR_Q;
    if (T0 & 0x80000000)
	env->sr |= SR_M;
    else
	env->sr &= ~SR_M;
    cond_t((T1 ^ T0) & 0x80000000);
    RETURN();
}

void OPPROTO op_div1_T0_T1(void)
{
    helper_div1_T0_T1();
    RETURN();
}

void OPPROTO op_dmulsl_T0_T1(void)
{
    helper_dmulsl_T0_T1();
    RETURN();
}

void OPPROTO op_dmulul_T0_T1(void)
{
    helper_dmulul_T0_T1();
    RETURN();
}

void OPPROTO op_macl_T0_T1(void)
{
    helper_macl_T0_T1();
    RETURN();
}

void OPPROTO op_macw_T0_T1(void)
{
    helper_macw_T0_T1();
    RETURN();
}

void OPPROTO op_mull_T0_T1(void)
{
    env->macl = (T0 * T1) & 0xffffffff;
    RETURN();
}

void OPPROTO op_mulsw_T0_T1(void)
{
    env->macl = (int32_t)(int16_t) T0 *(int32_t)(int16_t) T1;
    RETURN();
}

void OPPROTO op_muluw_T0_T1(void)
{
    env->macl = (uint32_t)(uint16_t) T0 *(uint32_t)(uint16_t) T1;
    RETURN();
}

void OPPROTO op_negc_T0(void)
{
    helper_negc_T0();
    RETURN();
}

void OPPROTO op_shad_T0_T1(void)
{
    if ((T0 & 0x80000000) == 0)
	T1 <<= (T0 & 0x1f);
    else if ((T0 & 0x1f) == 0)
	T1 = (T1 & 0x80000000)? 0xffffffff : 0;
    else
	T1 = ((int32_t) T1) >> ((~T0 & 0x1f) + 1);
    RETURN();
}

void OPPROTO op_shld_T0_T1(void)
{
    if ((T0 & 0x80000000) == 0)
	T1 <<= (T0 & 0x1f);
    else if ((T0 & 0x1f) == 0)
	T1 = 0;
    else
	T1 = ((uint32_t) T1) >> ((~T0 & 0x1f) + 1);
    RETURN();
}

void OPPROTO op_subc_T0_T1(void)
{
    helper_subc_T0_T1();
    RETURN();
}

void OPPROTO op_subv_T0_T1(void)
{
    helper_subv_T0_T1();
    RETURN();
}

void OPPROTO op_trapa(void)
{
    env->tra = PARAM1 << 2;
    env->exception_index = 0x160;
    do_raise_exception();
    RETURN();
}

void OPPROTO op_jmp_T0(void)
{
    env->delayed_pc = T0;
    RETURN();
}

void OPPROTO op_ldcl_rMplus_rN_bank(void)
{
    env->gregs[PARAM2] = env->gregs[PARAM1];
    env->gregs[PARAM1] += 4;
    RETURN();
}

void OPPROTO op_ldc_T0_sr(void)
{
    env->sr = T0 & 0x700083f3;
    RETURN();
}

void OPPROTO op_stc_sr_T0(void)
{
    T0 = env->sr;
    RETURN();
}

#define LDSTOPS(target,load,store) \
void OPPROTO op_##load##_T0_##target (void) \
{ env ->target = T0;   RETURN(); \
} \
void OPPROTO op_##store##_##target##_T0 (void) \
{ T0 = env->target;   RETURN(); \
} \

    LDSTOPS(gbr, ldc, stc)
    LDSTOPS(vbr, ldc, stc)
    LDSTOPS(ssr, ldc, stc)
    LDSTOPS(spc, ldc, stc)
    LDSTOPS(sgr, ldc, stc)
    LDSTOPS(dbr, ldc, stc)
    LDSTOPS(mach, lds, sts)
    LDSTOPS(macl, lds, sts)
    LDSTOPS(pr, lds, sts)
    LDSTOPS(fpul, lds, sts)

void OPPROTO op_lds_T0_fpscr(void)
{
    env->fpscr = T0 & 0x003fffff;
    env->fp_status.float_rounding_mode = T0 & 0x01 ?
      float_round_to_zero : float_round_nearest_even;

    RETURN();
}

void OPPROTO op_sts_fpscr_T0(void)
{
    T0 = env->fpscr & 0x003fffff;
    RETURN();
}

void OPPROTO op_rotcl_Rn(void)
{
    helper_rotcl(&env->gregs[PARAM1]);
    RETURN();
}

void OPPROTO op_rotcr_Rn(void)
{
    helper_rotcr(&env->gregs[PARAM1]);
    RETURN();
}

void OPPROTO op_rotl_Rn(void)
{
    cond_t(env->gregs[PARAM1] & 0x80000000);
    env->gregs[PARAM1] = (env->gregs[PARAM1] << 1) | (env->sr & SR_T);
    RETURN();
}

void OPPROTO op_rotr_Rn(void)
{
    cond_t(env->gregs[PARAM1] & 1);
    env->gregs[PARAM1] = (env->gregs[PARAM1] >> 1) |
	((env->sr & SR_T) ? 0x80000000 : 0);
    RETURN();
}

void OPPROTO op_shal_Rn(void)
{
    cond_t(env->gregs[PARAM1] & 0x80000000);
    env->gregs[PARAM1] <<= 1;
    RETURN();
}

void OPPROTO op_shar_Rn(void)
{
    cond_t(env->gregs[PARAM1] & 1);
    *(int32_t *)&env->gregs[PARAM1] >>= 1;
    RETURN();
}

void OPPROTO op_shlr_Rn(void)
{
    cond_t(env->gregs[PARAM1] & 1);
    env->gregs[PARAM1] >>= 1;
    RETURN();
}

void OPPROTO op_fmov_frN_FT0(void)
{
    FT0 = env->fregs[PARAM1];
    RETURN();
}

void OPPROTO op_fmov_drN_DT0(void)
{
    CPU_DoubleU d;

    d.l.upper = *(uint32_t *)&env->fregs[PARAM1];
    d.l.lower = *(uint32_t *)&env->fregs[PARAM1 + 1];
    DT0 = d.d;
    RETURN();
}

void OPPROTO op_fmov_frN_FT1(void)
{
    FT1 = env->fregs[PARAM1];
    RETURN();
}

void OPPROTO op_fmov_drN_DT1(void)
{
    CPU_DoubleU d;

    d.l.upper = *(uint32_t *)&env->fregs[PARAM1];
    d.l.lower = *(uint32_t *)&env->fregs[PARAM1 + 1];
    DT1 = d.d;
    RETURN();
}

void OPPROTO op_fmov_FT0_frN(void)
{
    env->fregs[PARAM1] = FT0;
    RETURN();
}

void OPPROTO op_fmov_DT0_drN(void)
{
    CPU_DoubleU d;

    d.d = DT0;
    *(uint32_t *)&env->fregs[PARAM1] = d.l.upper;
    *(uint32_t *)&env->fregs[PARAM1 + 1] = d.l.lower;
    RETURN();
}

void OPPROTO op_fadd_FT(void)
{
    FT0 = float32_add(FT0, FT1, &env->fp_status);
    RETURN();
}

void OPPROTO op_fadd_DT(void)
{
    DT0 = float64_add(DT0, DT1, &env->fp_status);
    RETURN();
}

void OPPROTO op_fsub_FT(void)
{
    FT0 = float32_sub(FT0, FT1, &env->fp_status);
    RETURN();
}

void OPPROTO op_fsub_DT(void)
{
    DT0 = float64_sub(DT0, DT1, &env->fp_status);
    RETURN();
}

void OPPROTO op_fmul_FT(void)
{
    FT0 = float32_mul(FT0, FT1, &env->fp_status);
    RETURN();
}

void OPPROTO op_fmul_DT(void)
{
    DT0 = float64_mul(DT0, DT1, &env->fp_status);
    RETURN();
}

void OPPROTO op_fdiv_FT(void)
{
    FT0 = float32_div(FT0, FT1, &env->fp_status);
    RETURN();
}

void OPPROTO op_fdiv_DT(void)
{
    DT0 = float64_div(DT0, DT1, &env->fp_status);
    RETURN();
}

void OPPROTO op_fcmp_eq_FT(void)
{
    cond_t(float32_compare(FT0, FT1, &env->fp_status) == 0);
    RETURN();
}

void OPPROTO op_fcmp_eq_DT(void)
{
    cond_t(float64_compare(DT0, DT1, &env->fp_status) == 0);
    RETURN();
}

void OPPROTO op_fcmp_gt_FT(void)
{
    cond_t(float32_compare(FT0, FT1, &env->fp_status) == 1);
    RETURN();
}

void OPPROTO op_fcmp_gt_DT(void)
{
    cond_t(float64_compare(DT0, DT1, &env->fp_status) == 1);
    RETURN();
}

void OPPROTO op_float_FT(void)
{
    FT0 = int32_to_float32(env->fpul, &env->fp_status);
    RETURN();
}

void OPPROTO op_float_DT(void)
{
    DT0 = int32_to_float64(env->fpul, &env->fp_status);
    RETURN();
}

void OPPROTO op_ftrc_FT(void)
{
    env->fpul = float32_to_int32_round_to_zero(FT0, &env->fp_status);
    RETURN();
}

void OPPROTO op_ftrc_DT(void)
{
    env->fpul = float64_to_int32_round_to_zero(DT0, &env->fp_status);
    RETURN();
}

void OPPROTO op_fneg_frN(void)
{
    env->fregs[PARAM1] = float32_chs(env->fregs[PARAM1]);
    RETURN();
}

void OPPROTO op_fabs_FT(void)
{
    FT0 = float32_abs(FT0);
    RETURN();
}

void OPPROTO op_fabs_DT(void)
{
    DT0 = float64_abs(DT0);
    RETURN();
}

void OPPROTO op_fcnvsd_FT_DT(void)
{
    DT0 = float32_to_float64(FT0, &env->fp_status);
    RETURN();
}

void OPPROTO op_fcnvds_DT_FT(void)
{
    FT0 = float64_to_float32(DT0, &env->fp_status);
    RETURN();
}

void OPPROTO op_fsqrt_FT(void)
{
    FT0 = float32_sqrt(FT0, &env->fp_status);
    RETURN();
}

void OPPROTO op_fsqrt_DT(void)
{
    DT0 = float64_sqrt(DT0, &env->fp_status);
    RETURN();
}

void OPPROTO op_fmov_T0_frN(void)
{
    *(uint32_t *)&env->fregs[PARAM1] = T0;
    RETURN();
}

void OPPROTO op_movl_fpul_FT0(void)
{
    FT0 = *(float32 *)&env->fpul;
    RETURN();
}

void OPPROTO op_movl_FT0_fpul(void)
{
    *(float32 *)&env->fpul = FT0;
    RETURN();
}

void OPPROTO op_jT(void)
{
    if (env->sr & SR_T)
	GOTO_LABEL_PARAM(1);
    RETURN();
}

void OPPROTO op_jdelayed(void)
{
    if (env->flags & DELAY_SLOT_TRUE) {
        env->flags &= ~DELAY_SLOT_TRUE;
        GOTO_LABEL_PARAM(1);
    }
    RETURN();
}

void OPPROTO op_movl_delayed_pc_PC(void)
{
    env->pc = env->delayed_pc;
    RETURN();
}

void OPPROTO op_raise_illegal_instruction(void)
{
    env->exception_index = 0x180;
    do_raise_exception();
    RETURN();
}

void OPPROTO op_raise_slot_illegal_instruction(void)
{
    env->exception_index = 0x1a0;
    do_raise_exception();
    RETURN();
}

void OPPROTO op_debug(void)
{
    env->exception_index = EXCP_DEBUG;
    cpu_loop_exit();
}

void OPPROTO op_sleep(void)
{
    env->halted = 1;
    env->exception_index = EXCP_HLT;
    cpu_loop_exit();
}

/* 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