diff options
| author | David Hildenbrand | 2019-10-21 10:57:13 +0200 |
|---|---|---|
| committer | Cornelia Huck | 2019-10-21 17:33:29 +0200 |
| commit | 23e797749fff754b8a136ee37607c6448b06cfca (patch) | |
| tree | e77da2026cfdf1ff2c01bbfccc918e3c27bd214d /include/exec/memory.h | |
| parent | s390x/tcg: Fix VECTOR SHIFT RIGHT ARITHMETIC BY BYTE (diff) | |
| download | qemu-23e797749fff754b8a136ee37607c6448b06cfca.tar.gz qemu-23e797749fff754b8a136ee37607c6448b06cfca.tar.xz qemu-23e797749fff754b8a136ee37607c6448b06cfca.zip | |
s390x/tcg: Fix VECTOR SUBTRACT COMPUTE BORROW INDICATION
Looks like my idea of what a "borrow" is was wrong. The PoP says:
"If the resulting subtraction results in a carry out of bit zero, a value
of one is placed in the corresponding element of the first operand;
otherwise, a value of zero is placed in the corresponding element"
As clarified by Richard, all we have to do is invert the result.
Fixes: 1ee2d7ba72f6 ("s390x/tcg: Implement VECTOR SUBTRACT COMPUTE BORROW INDICATION")
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20191021085715.3797-5-david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to 'include/exec/memory.h')
0 files changed, 0 insertions, 0 deletions