Archipelago » qemu

/* XXX: clear VIF/VIP in all ops ? */

void OPPROTO op_movl_eflags_T0(void)

{

    load_eflags(T0, (TF_MASK | AC_MASK | ID_MASK | NT_MASK));

}

void OPPROTO op_movw_eflags_T0(void)

{

    load_eflags(T0, (TF_MASK | AC_MASK | ID_MASK | NT_MASK) & 0xffff);

}

void OPPROTO op_movl_eflags_T0_io(void)

{

    load_eflags(T0, (TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK));

}

void OPPROTO op_movw_eflags_T0_io(void)

{

    load_eflags(T0, (TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK) & 0xffff);

}

void OPPROTO op_movl_eflags_T0_cpl0(void)

{

    load_eflags(T0, (TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK | IOPL_MASK));

}

void OPPROTO op_movw_eflags_T0_cpl0(void)

{

    load_eflags(T0, (TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK | IOPL_MASK) & 0xffff);

}

#if 0

/* vm86plus version */

void OPPROTO op_movw_eflags_T0_vm(void)

{

    int eflags;

    eflags = T0;

    CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);

    DF = 1 - (2 * ((eflags >> 10) & 1));

    /* we also update some system flags as in user mode */

    env->eflags = (env->eflags & ~(FL_UPDATE_MASK16 | VIF_MASK)) |

        (eflags & FL_UPDATE_MASK16);

    if (eflags & IF_MASK) {

        env->eflags |= VIF_MASK;

        if (env->eflags & VIP_MASK) {

            EIP = PARAM1;

            raise_exception(EXCP0D_GPF);

        }

    }

    FORCE_RET();

}

void OPPROTO op_movl_eflags_T0_vm(void)

{

    int eflags;

    eflags = T0;

    CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);

    DF = 1 - (2 * ((eflags >> 10) & 1));

    /* we also update some system flags as in user mode */

    env->eflags = (env->eflags & ~(FL_UPDATE_MASK32 | VIF_MASK)) |

        (eflags & FL_UPDATE_MASK32);

    if (eflags & IF_MASK) {

        env->eflags |= VIF_MASK;

        if (env->eflags & VIP_MASK) {

            EIP = PARAM1;

            raise_exception(EXCP0D_GPF);

        }

    }

    FORCE_RET();

}

#endif

/* XXX: compute only O flag */

void OPPROTO op_movb_eflags_T0(void)

{

    int of;

    of = cc_table[CC_OP].compute_all() & CC_O;

    CC_SRC = (T0 & (CC_S | CC_Z | CC_A | CC_P | CC_C)) | of;

}

void OPPROTO op_movl_T0_eflags(void)

{

    int eflags;

    eflags = cc_table[CC_OP].compute_all();

    eflags |= (DF & DF_MASK);

    eflags |= env->eflags & ~(VM_MASK | RF_MASK);

    T0 = eflags;

}

/* vm86plus version */

#if 0

void OPPROTO op_movl_T0_eflags_vm(void)

{

    int eflags;

    eflags = cc_table[CC_OP].compute_all();

    eflags |= (DF & DF_MASK);

    eflags |= env->eflags & ~(VM_MASK | RF_MASK | IF_MASK);

    if (env->eflags & VIF_MASK)

        eflags |= IF_MASK;

    T0 = eflags;

}

#endif

void OPPROTO op_clc(void)

{

    int eflags;

    eflags = cc_table[CC_OP].compute_all();

    eflags &= ~CC_C;

    CC_SRC = eflags;

}

void OPPROTO op_stc(void)

{

    int eflags;

    eflags = cc_table[CC_OP].compute_all();

    eflags |= CC_C;

    CC_SRC = eflags;

}

void OPPROTO op_cmc(void)

{

    int eflags;

    eflags = cc_table[CC_OP].compute_all();

    eflags ^= CC_C;

    CC_SRC = eflags;

}

void OPPROTO op_salc(void)

{

    int cf;

    cf = cc_table[CC_OP].compute_c();

    EAX = (EAX & ~0xff) | ((-cf) & 0xff);

}