target/sh4: fix FPU unorderered compare
In case of unordered compare, the fcmp instructions should either trigger and invalid exception (if enabled) or set T=0. The existing code left it unchanged. LP: https://bugs.launchpad.net/qemu/+bug/1701821 Reported-by: Bruno Haible <bruno@clisp.org> Message-Id: <20170702202814.27793-3-aurelien@aurel32.net> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
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@ -274,12 +274,9 @@ void helper_fcmp_eq_FT(CPUSH4State *env, float32 t0, float32 t1)
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set_float_exception_flags(0, &env->fp_status);
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relation = float32_compare(t0, t1, &env->fp_status);
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if (unlikely(relation == float_relation_unordered)) {
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update_fpscr(env, GETPC());
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} else {
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env->sr_t = (relation == float_relation_equal);
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}
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}
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void helper_fcmp_eq_DT(CPUSH4State *env, float64 t0, float64 t1)
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{
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@ -287,12 +284,9 @@ void helper_fcmp_eq_DT(CPUSH4State *env, float64 t0, float64 t1)
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set_float_exception_flags(0, &env->fp_status);
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relation = float64_compare(t0, t1, &env->fp_status);
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if (unlikely(relation == float_relation_unordered)) {
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update_fpscr(env, GETPC());
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} else {
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env->sr_t = (relation == float_relation_equal);
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}
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}
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void helper_fcmp_gt_FT(CPUSH4State *env, float32 t0, float32 t1)
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{
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@ -300,12 +294,9 @@ void helper_fcmp_gt_FT(CPUSH4State *env, float32 t0, float32 t1)
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set_float_exception_flags(0, &env->fp_status);
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relation = float32_compare(t0, t1, &env->fp_status);
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if (unlikely(relation == float_relation_unordered)) {
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update_fpscr(env, GETPC());
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} else {
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env->sr_t = (relation == float_relation_greater);
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}
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}
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void helper_fcmp_gt_DT(CPUSH4State *env, float64 t0, float64 t1)
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{
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@ -313,12 +304,9 @@ void helper_fcmp_gt_DT(CPUSH4State *env, float64 t0, float64 t1)
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set_float_exception_flags(0, &env->fp_status);
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relation = float64_compare(t0, t1, &env->fp_status);
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if (unlikely(relation == float_relation_unordered)) {
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update_fpscr(env, GETPC());
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} else {
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env->sr_t = (relation == float_relation_greater);
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}
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}
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float64 helper_fcnvsd_FT_DT(CPUSH4State *env, float32 t0)
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{
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