mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

s390x/tcg: Implement VECTOR BIT PERMUTE

Browse Source 
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210608092337.12221-12-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
David Hildenbrand 2021-06-08 11:23:22 +02:00 committed by Cornelia Huck
parent 4da79375c2
commit 2a785dfb50
4 changed files with 33 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
target/s390x/helper.h
View File

@ -126,6 +126,7 @@ DEF_HELPER_FLAGS_1(stck, TCG_CALL_NO_RWG_SE, i64, env)
DEF_HELPER_FLAGS_3(probe_write_access, TCG_CALL_NO_WG, void, env, i64, i64)
/* === Vector Support Instructions === */
DEF_HELPER_FLAGS_4(gvec_vbperm, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
DEF_HELPER_FLAGS_4(vll, TCG_CALL_NO_WG, void, env, ptr, i64, i64)
DEF_HELPER_FLAGS_4(gvec_vpk16, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
DEF_HELPER_FLAGS_4(gvec_vpk32, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)

2
target/s390x/insn-data.def
View File

@ -989,6 +989,8 @@
/* === Vector Support Instructions === */
/* VECTOR BIT PERMUTE */
E(0xe785, VBPERM, VRR_c, VE, 0, 0, 0, 0, vbperm, 0, 0, IF_VEC)
/* VECTOR GATHER ELEMENT */
E(0xe713, VGEF, VRV, V, la2, 0, 0, 0, vge, 0, ES_32, IF_VEC)
E(0xe712, VGEG, VRV, V, la2, 0, 0, 0, vge, 0, ES_64, IF_VEC)

8
target/s390x/translate_vx.c.inc
View File

@ -327,6 +327,14 @@ static void gen_addi2_i64(TCGv_i64 dl, TCGv_i64 dh, TCGv_i64 al, TCGv_i64 ah,
tcg_temp_free_i64(bh);
}
static DisasJumpType op_vbperm(DisasContext *s, DisasOps *o)
{
gen_gvec_3_ool(get_field(s, v1), get_field(s, v2), get_field(s, v3), 0,
gen_helper_gvec_vbperm);
return DISAS_NEXT;
}
static DisasJumpType op_vge(DisasContext *s, DisasOps *o)
{
const uint8_t es = s->insn->data;

22
target/s390x/vec_helper.c
View File

@ -19,6 +19,28 @@
#include "exec/cpu_ldst.h"
#include "exec/exec-all.h"
void HELPER(gvec_vbperm)(void *v1, const void *v2, const void *v3,
uint32_t desc)
{
S390Vector tmp = {};
uint16_t result = 0;
int i;
for (i = 0; i < 16; i++) {
const uint8_t bit_nr = s390_vec_read_element8(v3, i);
uint16_t bit;
if (bit_nr >= 128) {
continue;
}
bit = (s390_vec_read_element8(v2, bit_nr / 8)
>> (7 - (bit_nr % 8))) & 1;
result |= (bit << (15 - i));
}
s390_vec_write_element16(&tmp, 3, result);
*(S390Vector *)v1 = tmp;
}
void HELPER(vll)(CPUS390XState *env, void *v1, uint64_t addr, uint64_t bytes)
{
if (likely(bytes >= 16)) {