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s390x/tcg: Implement VECTOR PERMUTE 

Take care of overlying inputs and outputs by using a temporary vector.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20190307121539.12842-21-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
David Hildenbrand 2019-03-07 13:15:27 +01:00 committed by Cornelia Huck
parent 73946f0d55
commit 7aaf844d46
4 changed files with 34 additions and 0 deletions
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1
target/s390x/helper.h
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@ -141,6 +141,7 @@ DEF_HELPER_FLAGS_4(gvec_vpkls64, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
DEF_HELPER_5(gvec_vpkls_cc16, void, ptr, cptr, cptr, env, i32)
DEF_HELPER_5(gvec_vpkls_cc32, void, ptr, cptr, cptr, env, i32)
DEF_HELPER_5(gvec_vpkls_cc64, void, ptr, cptr, cptr, env, i32)
DEF_HELPER_FLAGS_5(gvec_vperm, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, cptr, i32)
#ifndef CONFIG_USER_ONLY
DEF_HELPER_3(servc, i32, env, i64, i64)

1
target/s390x/insn-data.def
View File

@ -1020,6 +1020,7 @@
F(0xe797, VPKS, VRR_b, V, 0, 0, 0, 0, vpk, 0, IF_VEC)
/* VECTOR PACK LOGICAL SATURATE */
F(0xe795, VPKLS, VRR_b, V, 0, 0, 0, 0, vpk, 0, IF_VEC)
F(0xe78c, VPERM, VRR_e, V, 0, 0, 0, 0, vperm, 0, IF_VEC)
#ifndef CONFIG_USER_ONLY
/* COMPARE AND SWAP AND PURGE */

12
target/s390x/translate_vx.inc.c
View File

@ -141,6 +141,10 @@ static void get_vec_element_ptr_i64(TCGv_ptr ptr, uint8_t reg, TCGv_i64 enr,
#define gen_gvec_3_ptr(v1, v2, v3, ptr, data, fn) \
tcg_gen_gvec_3_ptr(vec_full_reg_offset(v1), vec_full_reg_offset(v2), \
vec_full_reg_offset(v3), ptr, 16, 16, data, fn)
#define gen_gvec_4_ool(v1, v2, v3, v4, data, fn) \
tcg_gen_gvec_4_ool(vec_full_reg_offset(v1), vec_full_reg_offset(v2), \
vec_full_reg_offset(v3), vec_full_reg_offset(v4), \
16, 16, data, fn)
#define gen_gvec_dup_i64(es, v1, c) \
tcg_gen_gvec_dup_i64(es, vec_full_reg_offset(v1), 16, 16, c)
#define gen_gvec_mov(v1, v2) \
@ -663,3 +667,11 @@ static DisasJumpType op_vpk(DisasContext *s, DisasOps *o)
}
return DISAS_NEXT;
}
static DisasJumpType op_vperm(DisasContext *s, DisasOps *o)
{
gen_gvec_4_ool(get_field(s->fields, v1), get_field(s->fields, v2),
get_field(s->fields, v3), get_field(s->fields, v4),
0, gen_helper_gvec_vperm);
return DISAS_NEXT;
}

20
target/s390x/vec_helper.c
View File

@ -147,3 +147,23 @@ void HELPER(gvec_vpkls_cc##BITS)(void *v1, const void *v2, const void *v3, \
DEF_VPKLS(64, 32)
DEF_VPKLS(32, 16)
DEF_VPKLS(16, 8)
void HELPER(gvec_vperm)(void *v1, const void *v2, const void *v3,
const void *v4, uint32_t desc)
{
S390Vector tmp;
int i;
for (i = 0; i < 16; i++) {
const uint8_t selector = s390_vec_read_element8(v4, i) & 0x1f;
uint8_t byte;
if (selector < 16) {
byte = s390_vec_read_element8(v2, selector);
} else {
byte = s390_vec_read_element8(v3, selector - 16);
}
s390_vec_write_element8(&tmp, i, byte);
}
*(S390Vector *)v1 = tmp;
}