diff options
| -rw-r--r-- | target/alpha/helper.c | 24 |
1 files changed, 8 insertions, 16 deletions
diff --git a/target/alpha/helper.c b/target/alpha/helper.c index 19cda0a..6c17036 100644 --- a/target/alpha/helper.c +++ b/target/alpha/helper.c @@ -36,6 +36,13 @@ uint64_t cpu_alpha_load_fpcr(CPUAlphaState *env) void cpu_alpha_store_fpcr(CPUAlphaState *env, uint64_t val) { + static const uint8_t rm_map[] = { + [FPCR_DYN_NORMAL >> FPCR_DYN_SHIFT] = float_round_nearest_even, + [FPCR_DYN_CHOPPED >> FPCR_DYN_SHIFT] = float_round_to_zero, + [FPCR_DYN_MINUS >> FPCR_DYN_SHIFT] = float_round_down, + [FPCR_DYN_PLUS >> FPCR_DYN_SHIFT] = float_round_up, + }; + uint32_t fpcr = val >> 32; uint32_t t = 0; @@ -48,22 +55,7 @@ void cpu_alpha_store_fpcr(CPUAlphaState *env, uint64_t val) env->fpcr = fpcr; env->fpcr_exc_enable = ~t & FPCR_STATUS_MASK; - switch (fpcr & FPCR_DYN_MASK) { - case FPCR_DYN_NORMAL: - default: - t = float_round_nearest_even; - break; - case FPCR_DYN_CHOPPED: - t = float_round_to_zero; - break; - case FPCR_DYN_MINUS: - t = float_round_down; - break; - case FPCR_DYN_PLUS: - t = float_round_up; - break; - } - env->fpcr_dyn_round = t; + env->fpcr_dyn_round = rm_map[(fpcr & FPCR_DYN_MASK) >> FPCR_DYN_SHIFT]; env->fpcr_flush_to_zero = (fpcr & FPCR_UNFD) && (fpcr & FPCR_UNDZ); env->fp_status.flush_inputs_to_zero = (fpcr & FPCR_DNZ) != 0; |