| commit | 38ad4fa3de4a0e747940711f16028fc509a4a6b6 | |
| author | David Hildenbrand <david@redhat.com> | |
| Mon, 21 Oct 2019 08:57:15 +0000 (21 10:57 +0200) | ||
| committer | Cornelia Huck <cohuck@redhat.com> | |
| Mon, 21 Oct 2019 15:34:43 +0000 (21 17:34 +0200) | ||
| tree | 416c9dd7d76bb294bb23c1472ef95af9f14f79b2 | treesnapshot (tar.gz zip) |
| parent | 2cb8a68d375450ab7be372d90e2ddf5a2a832cdc | commitdiff |
s390x/tcg: Fix VECTOR SUBTRACT WITH BORROW COMPUTE BORROW INDICATION
The numbers are unsigned, the computation is wrong. "Each operand is
treated as an unsigned binary integer".
Let's implement as given in the PoP:
"A subtraction is performed by adding the contents of the second operand
with the bitwise complement of the third operand along with a borrow
indication from the rightmost bit of the fourth operand."
Reuse gen_accc2_i64().
Fixes: bc725e65152c ("s390x/tcg: Implement VECTOR SUBTRACT WITH BORROW COMPUTE BORROW INDICATION")
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20191021085715.3797-7-david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
The numbers are unsigned, the computation is wrong. "Each operand is
treated as an unsigned binary integer".
Let's implement as given in the PoP:
"A subtraction is performed by adding the contents of the second operand
with the bitwise complement of the third operand along with a borrow
indication from the rightmost bit of the fourth operand."
Reuse gen_accc2_i64().
Fixes: bc725e65152c ("s390x/tcg: Implement VECTOR SUBTRACT WITH BORROW COMPUTE BORROW INDICATION")
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20191021085715.3797-7-david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
| target/s390x/translate_vx.inc.c | diffblobblamehistory |