OpenE2K
/
qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

s390x/tcg: Implement VECTOR UNPACK * 

Combine all variant in a single handler. As source and destination
have different element sizes, we can't use gvec expansion. Expand
manually. Also watch out for overlapping source and destination
registers. Use a safe evaluation order depending on the operation.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20190307121539.12842-33-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
David Hildenbrand 2019-03-07 13:15:39 +01:00 committed by Cornelia Huck
parent 0e0a5b49ad
commit 2c7590c8ea
2 changed files with 46 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
target/s390x/insn-data.def
View File

@ -1045,6 +1045,14 @@
F(0xe73e, VSTM, VRS_a, V, la2, 0, 0, 0, vstm, 0, IF_VEC)
/* VECTOR STORE WITH LENGTH */
F(0xe73f, VSTL, VRS_b, V, la2, r3_32u, 0, 0, vstl, 0, IF_VEC)
/* VECTOR UNPACK HIGH */
F(0xe7d7, VUPH, VRR_a, V, 0, 0, 0, 0, vup, 0, IF_VEC)
/* VECTOR UNPACK LOGICAL HIGH */
F(0xe7d5, VUPLH, VRR_a, V, 0, 0, 0, 0, vup, 0, IF_VEC)
/* VECTOR UNPACK LOW */
F(0xe7d6, VUPL, VRR_a, V, 0, 0, 0, 0, vup, 0, IF_VEC)
/* VECTOR UNPACK LOGICAL LOW */
F(0xe7d4, VUPLL, VRR_a, V, 0, 0, 0, 0, vup, 0, IF_VEC)
#ifndef CONFIG_USER_ONLY
/* COMPARE AND SWAP AND PURGE */

38
target/s390x/translate_vx.inc.c
View File

@ -895,3 +895,41 @@ static DisasJumpType op_vstl(DisasContext *s, DisasOps *o)
tcg_temp_free_ptr(a0);
return DISAS_NEXT;
}
static DisasJumpType op_vup(DisasContext *s, DisasOps *o)
{
const bool logical = s->fields->op2 == 0xd4 || s->fields->op2 == 0xd5;
const uint8_t v1 = get_field(s->fields, v1);
const uint8_t v2 = get_field(s->fields, v2);
const uint8_t src_es = get_field(s->fields, m3);
const uint8_t dst_es = src_es + 1;
int dst_idx, src_idx;
TCGv_i64 tmp;
if (src_es > ES_32) {
gen_program_exception(s, PGM_SPECIFICATION);
return DISAS_NORETURN;
}
tmp = tcg_temp_new_i64();
if (s->fields->op2 == 0xd7 || s->fields->op2 == 0xd5) {
/* iterate backwards to avoid overwriting data we might need later */
for (dst_idx = NUM_VEC_ELEMENTS(dst_es) - 1; dst_idx >= 0; dst_idx--) {
src_idx = dst_idx;
read_vec_element_i64(tmp, v2, src_idx,
src_es | (logical ? 0 : MO_SIGN));
write_vec_element_i64(tmp, v1, dst_idx, dst_es);
}
} else {
/* iterate forward to avoid overwriting data we might need later */
for (dst_idx = 0; dst_idx < NUM_VEC_ELEMENTS(dst_es); dst_idx++) {
src_idx = dst_idx + NUM_VEC_ELEMENTS(src_es) / 2;
read_vec_element_i64(tmp, v2, src_idx,
src_es | (logical ? 0 : MO_SIGN));
write_vec_element_i64(tmp, v1, dst_idx, dst_es);
}
}
tcg_temp_free_i64(tmp);
return DISAS_NEXT;
}