diff options
| author | David Hildenbrand <david@redhat.com> | 2019-04-11 09:31:04 +0200 |
|---|---|---|
| committer | David Hildenbrand <david@redhat.com> | 2019-05-17 10:54:13 +0200 |
| commit | c1a81d4b12b8f519863db6d7a0048b5cd0a802f0 (patch) | |
| tree | 8aad8be49d082051c5aeab1cbab1b1e34402beb8 /target/s390x/vec_int_helper.c | |
| parent | 4c1bd09a1d06e76036211d19ae35762ad131f6db (diff) | |
s390x/tcg: Implement VECTOR AVERAGE
Handle 32/64-bit elements via gvec expansion and the 8/16 bits via
ool helpers.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Diffstat (limited to 'target/s390x/vec_int_helper.c')
| -rw-r--r-- | target/s390x/vec_int_helper.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/target/s390x/vec_int_helper.c b/target/s390x/vec_int_helper.c new file mode 100644 index 0000000000..d964655bb8 --- /dev/null +++ b/target/s390x/vec_int_helper.c @@ -0,0 +1,32 @@ +/* + * QEMU TCG support -- s390x vector integer instruction support + * + * Copyright (C) 2019 Red Hat Inc + * + * Authors: + * David Hildenbrand <david@redhat.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ +#include "qemu/osdep.h" +#include "qemu-common.h" +#include "cpu.h" +#include "vec.h" +#include "exec/helper-proto.h" + +#define DEF_VAVG(BITS) \ +void HELPER(gvec_vavg##BITS)(void *v1, const void *v2, const void *v3, \ + uint32_t desc) \ +{ \ + int i; \ + \ + for (i = 0; i < (128 / BITS); i++) { \ + const int32_t a = (int##BITS##_t)s390_vec_read_element##BITS(v2, i); \ + const int32_t b = (int##BITS##_t)s390_vec_read_element##BITS(v3, i); \ + \ + s390_vec_write_element##BITS(v1, i, (a + b + 1) >> 1); \ + } \ +} +DEF_VAVG(8) +DEF_VAVG(16) |