| commit | 3a0eae8546b4cda2526f1d913d50c4eb63f5c05e | |
| author | David Hildenbrand <david@redhat.com> | |
| Wed, 29 May 2019 19:21:21 +0000 (29 21:21 +0200) | ||
| committer | David Hildenbrand <david@redhat.com> | |
| Fri, 7 Jun 2019 12:53:25 +0000 (7 14:53 +0200) | ||
| tree | 6017d8b8f68942db8db7861753ee1e60493f384f | treesnapshot (tar.gz zip) |
| parent | aae65009726858390d8bfca73d795613698f317a | commitdiff |
s390x/tcg: Implement VECTOR FP ADD
1. We'll reuse op_vfa() for similar instructions later, prepare for
that.
2. We'll reuse vop64_3() for other instructions later.
3. Take care of modifying the vector register only if no trap happened.
- on traps, flags are not updated and no elements are modified
- traps don't modify the fpc flags
- without traps, all exceptions of all elements are merged
4. We'll reuse check_ieee_exc() later when we need the XxC flag.
We have to check for exceptions after processing each element.
Provide separate handlers for single/all element processing. We'll do
the same for all applicable FP instructions.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
1. We'll reuse op_vfa() for similar instructions later, prepare for
that.
2. We'll reuse vop64_3() for other instructions later.
3. Take care of modifying the vector register only if no trap happened.
- on traps, flags are not updated and no elements are modified
- traps don't modify the fpc flags
- without traps, all exceptions of all elements are merged
4. We'll reuse check_ieee_exc() later when we need the XxC flag.
We have to check for exceptions after processing each element.
Provide separate handlers for single/all element processing. We'll do
the same for all applicable FP instructions.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>