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target/openrisc: Implement move to/from FPCSR

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Reviewed-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2019-08-26 15:10:10 -07:00
parent 2b13b4b93d
commit a465772eea
5 changed files with 39 additions and 6 deletions
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13
target/openrisc/fpu_helper.c
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@ -61,6 +61,19 @@ void HELPER(update_fpcsr)(CPUOpenRISCState *env)
}
}
void cpu_set_fpcsr(CPUOpenRISCState *env, uint32_t val)
{
static const int rm_to_sf[] = {
float_round_nearest_even,
float_round_to_zero,
float_round_up,
float_round_down
};
env->fpcsr = val & 0x7ff;
set_float_rounding_mode(rm_to_sf[extract32(val, 1, 2)], &env->fp_status);
}
uint64_t HELPER(itofd)(CPUOpenRISCState *env, uint64_t val)
{
return int64_to_float64(val, &env->fp_status);