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target-alpha: Raise IOV from CVTTQ

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Floating-point overflow is a different bit from integer overflow.

Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2014-06-28 12:57:03 -07:00
parent f6b6b7b8a7
commit c24a8a0b6d
3 changed files with 13 additions and 30 deletions
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17
target-alpha/translate.c
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@ -760,23 +760,14 @@ static void gen_cvttq(DisasContext *ctx, int rb, int rc, int fn11)
vb = gen_ieee_input(ctx, rb, fn11, 0);
vc = dest_fpr(ctx, rc);
/* Almost all integer conversions use cropped rounding, and most
also do not have integer overflow enabled. Special case that. */
switch (fn11) {
case QUAL_RM_C:
/* Almost all integer conversions use cropped rounding;
special case that. */
if ((fn11 & QUAL_RM_MASK) == QUAL_RM_C) {
gen_helper_cvttq_c(vc, cpu_env, vb);
break;
case QUAL_V | QUAL_RM_C:
case QUAL_S | QUAL_V | QUAL_RM_C:
case QUAL_S | QUAL_V | QUAL_I | QUAL_RM_C:
gen_helper_cvttq_svic(vc, cpu_env, vb);
break;
default:
} else {
gen_qual_roundmode(ctx, fn11);
gen_helper_cvttq(vc, cpu_env, vb);
break;
}
gen_fp_exc_raise(rc, fn11);
}