target/alpha: Use array for FPCR_DYN conversion
This is a bit more straight-forward than using a switch statement. No functional change. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20190921043256.4575-2-richard.henderson@linaro.org>
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@ -36,6 +36,13 @@ uint64_t cpu_alpha_load_fpcr(CPUAlphaState *env)
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void cpu_alpha_store_fpcr(CPUAlphaState *env, uint64_t val)
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void cpu_alpha_store_fpcr(CPUAlphaState *env, uint64_t val)
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{
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{
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static const uint8_t rm_map[] = {
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[FPCR_DYN_NORMAL >> FPCR_DYN_SHIFT] = float_round_nearest_even,
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[FPCR_DYN_CHOPPED >> FPCR_DYN_SHIFT] = float_round_to_zero,
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[FPCR_DYN_MINUS >> FPCR_DYN_SHIFT] = float_round_down,
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[FPCR_DYN_PLUS >> FPCR_DYN_SHIFT] = float_round_up,
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};
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uint32_t fpcr = val >> 32;
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uint32_t fpcr = val >> 32;
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uint32_t t = 0;
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uint32_t t = 0;
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@ -48,22 +55,7 @@ void cpu_alpha_store_fpcr(CPUAlphaState *env, uint64_t val)
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env->fpcr = fpcr;
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env->fpcr = fpcr;
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env->fpcr_exc_enable = ~t & FPCR_STATUS_MASK;
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env->fpcr_exc_enable = ~t & FPCR_STATUS_MASK;
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switch (fpcr & FPCR_DYN_MASK) {
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env->fpcr_dyn_round = rm_map[(fpcr & FPCR_DYN_MASK) >> FPCR_DYN_SHIFT];
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case FPCR_DYN_NORMAL:
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default:
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t = float_round_nearest_even;
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break;
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case FPCR_DYN_CHOPPED:
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t = float_round_to_zero;
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break;
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case FPCR_DYN_MINUS:
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t = float_round_down;
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break;
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case FPCR_DYN_PLUS:
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t = float_round_up;
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break;
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}
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env->fpcr_dyn_round = t;
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env->fpcr_flush_to_zero = (fpcr & FPCR_UNFD) && (fpcr & FPCR_UNDZ);
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env->fpcr_flush_to_zero = (fpcr & FPCR_UNFD) && (fpcr & FPCR_UNDZ);
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env->fp_status.flush_inputs_to_zero = (fpcr & FPCR_DNZ) != 0;
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env->fp_status.flush_inputs_to_zero = (fpcr & FPCR_DNZ) != 0;
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