Commit ea32aaf1 authored by Dmitry Poletaev's avatar Dmitry Poletaev Committed by Richard Henderson
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target-i386: Wrong conversion infinity from float80 to int32/int64 



Signed-off-by: default avatarDmitry Poletaev <poletaev-qemu@yandex.ru>
Signed-off-by: default avatarRichard Henderson <rth@twiddle.net>
parent 99c9c3cb

target-i386/fpu_helper.c

+19 −1
Original line number Diff line number Diff line
@@ -251,16 +251,34 @@ int32_t helper_fist_ST0(CPUX86State *env) 
int32_t helper_fistl_ST0(CPUX86State *env)

{

    int32_t val;

    signed char old_exp_flags;



    old_exp_flags = get_float_exception_flags(&env->fp_status);

    set_float_exception_flags(0, &env->fp_status);



    val = floatx80_to_int32(ST0, &env->fp_status);

    if (get_float_exception_flags(&env->fp_status) & float_flag_invalid) {

        val = 0x80000000;

    }

    set_float_exception_flags(get_float_exception_flags(&env->fp_status)

                                | old_exp_flags, &env->fp_status);

    return val;

}



int64_t helper_fistll_ST0(CPUX86State *env)

{

    int64_t val;

    signed char old_exp_flags;



    val = floatx80_to_int64(ST0, &env->fp_status);

    old_exp_flags = get_float_exception_flags(&env->fp_status);

    set_float_exception_flags(0, &env->fp_status);



    val = floatx80_to_int32(ST0, &env->fp_status);

    if (get_float_exception_flags(&env->fp_status) & float_flag_invalid) {

        val = 0x8000000000000000ULL;

    }

    set_float_exception_flags(get_float_exception_flags(&env->fp_status)

                                | old_exp_flags, &env->fp_status);

    return val;

}