| commit | 6d6ad1d14e2fdbc693524dbd721ef33d0adb9473 | |
| author | David Hildenbrand <david@redhat.com> | |
| Mon, 18 Feb 2019 12:27:00 +0000 (18 13:27 +0100) | ||
| committer | Cornelia Huck <cohuck@redhat.com> | |
| Mon, 4 Mar 2019 10:49:31 +0000 (4 11:49 +0100) | ||
| tree | 19fe77e36fd72b1d06215816c06f0d07f13e2382 | treesnapshot (tar.gz zip) |
| parent | fcb9e9f2a1b229b834e4133f626c4f40b43f7b9d | commitdiff |
s390x/tcg: Hide IEEE underflows in some scenarios
IEEE underflows are not reported when the mask bit is off and we don't
also have an inexact exception.
z14 PoP, 9-20, "IEEE Underflow":
An IEEE-underflow exception is recognized for an
IEEE target when the tininess condition exists and
either: (1) the IEEE-underflow mask bit in the FPC
register is zero and the result value is inexact, or (2)
the IEEE-underflow mask bit in the FPC register is
one.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20190218122710.23639-6-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
IEEE underflows are not reported when the mask bit is off and we don't
also have an inexact exception.
z14 PoP, 9-20, "IEEE Underflow":
An IEEE-underflow exception is recognized for an
IEEE target when the tininess condition exists and
either: (1) the IEEE-underflow mask bit in the FPC
register is zero and the result value is inexact, or (2)
the IEEE-underflow mask bit in the FPC register is
one.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20190218122710.23639-6-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
| target/s390x/fpu_helper.c | diffblobblamehistory |