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target/arm/vfp_helper: Extract vfp_set_fpscr_from_host()

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The vfp_set_fpscr() helper contains code specific to the host
floating point implementation (here the SoftFloat library).
Extract this code to vfp_set_fpscr_from_host().

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20190701132516.26392-17-philmd@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2019-07-01 17:26:21 +01:00 committed by Peter Maydell
parent e9d652824b
commit 0c6ad94809
1 changed files with 13 additions and 6 deletions
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19
target/arm/vfp_helper.c
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@ -81,6 +81,18 @@ static inline int vfp_exceptbits_to_host(int target_bits)
return host_bits;
}
static uint32_t vfp_get_fpscr_from_host(CPUARMState *env)
{
uint32_t i;
i = get_float_exception_flags(&env->vfp.fp_status);
i |= get_float_exception_flags(&env->vfp.standard_fp_status);
/* FZ16 does not generate an input denormal exception. */
i |= (get_float_exception_flags(&env->vfp.fp_status_f16)
& ~float_flag_input_denormal);
return vfp_exceptbits_from_host(i);
}
static void vfp_set_fpscr_to_host(CPUARMState *env, uint32_t val)
{
int i;
@ -141,12 +153,7 @@ uint32_t HELPER(vfp_get_fpscr)(CPUARMState *env)
| (env->vfp.vec_len << 16)
| (env->vfp.vec_stride << 20);
i = get_float_exception_flags(&env->vfp.fp_status);
i |= get_float_exception_flags(&env->vfp.standard_fp_status);
/* FZ16 does not generate an input denormal exception. */
i |= (get_float_exception_flags(&env->vfp.fp_status_f16)
& ~float_flag_input_denormal);
fpscr |= vfp_exceptbits_from_host(i);
fpscr |= vfp_get_fpscr_from_host(env);
i = env->vfp.qc[0] | env->vfp.qc[1] | env->vfp.qc[2] | env->vfp.qc[3];
fpscr |= i ? FPCR_QC : 0;