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s390x/tcg: Implement VECTOR FIND ELEMENT EQUAL

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Core logic courtesy of Richard H.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
This commit is contained in:
David Hildenbrand 2019-05-24 11:25:58 +02:00
parent 1fd286385c
commit 8c0e1e58ce
4 changed files with 96 additions and 0 deletions
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6
target/s390x/helper.h
View File

@ -218,6 +218,12 @@ DEF_HELPER_FLAGS_4(gvec_vfae32, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
DEF_HELPER_5(gvec_vfae_cc8, void, ptr, cptr, cptr, env, i32)
DEF_HELPER_5(gvec_vfae_cc16, void, ptr, cptr, cptr, env, i32)
DEF_HELPER_5(gvec_vfae_cc32, void, ptr, cptr, cptr, env, i32)
DEF_HELPER_FLAGS_4(gvec_vfee8, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
DEF_HELPER_FLAGS_4(gvec_vfee16, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
DEF_HELPER_FLAGS_4(gvec_vfee32, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
DEF_HELPER_5(gvec_vfee_cc8, void, ptr, cptr, cptr, env, i32)
DEF_HELPER_5(gvec_vfee_cc16, void, ptr, cptr, cptr, env, i32)
DEF_HELPER_5(gvec_vfee_cc32, void, ptr, cptr, cptr, env, i32)
#ifndef CONFIG_USER_ONLY
DEF_HELPER_3(servc, i32, env, i64, i64)

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

@ -1195,6 +1195,8 @@
/* VECTOR FIND ANY ELEMENT EQUAL */
F(0xe782, VFAE, VRR_b, V, 0, 0, 0, 0, vfae, 0, IF_VEC)
/* VECTOR FIND ELEMENT EQUAL */
F(0xe780, VFEE, VRR_b, V, 0, 0, 0, 0, vfee, 0, IF_VEC)
#ifndef CONFIG_USER_ONLY
/* COMPARE AND SWAP AND PURGE */

31
target/s390x/translate_vx.inc.c
View File

@ -2383,3 +2383,34 @@ static DisasJumpType op_vfae(DisasContext *s, DisasOps *o)
}
return DISAS_NEXT;
}
static DisasJumpType op_vfee(DisasContext *s, DisasOps *o)
{
const uint8_t es = get_field(s->fields, m4);
const uint8_t m5 = get_field(s->fields, m5);
static gen_helper_gvec_3 * const g[3] = {
gen_helper_gvec_vfee8,
gen_helper_gvec_vfee16,
gen_helper_gvec_vfee32,
};
static gen_helper_gvec_3_ptr * const g_cc[3] = {
gen_helper_gvec_vfee_cc8,
gen_helper_gvec_vfee_cc16,
gen_helper_gvec_vfee_cc32,
};
if (es > ES_32 || m5 & ~0x3) {
gen_program_exception(s, PGM_SPECIFICATION);
return DISAS_NORETURN;
}
if (extract32(m5, 0, 1)) {
gen_gvec_3_ptr(get_field(s->fields, v1), get_field(s->fields, v2),
get_field(s->fields, v3), cpu_env, m5, g_cc[es]);
set_cc_static(s);
} else {
gen_gvec_3_ool(get_field(s->fields, v1), get_field(s->fields, v2),
get_field(s->fields, v3), m5, g[es]);
}
return DISAS_NEXT;
}

57
target/s390x/vec_string_helper.c
View File

@ -152,3 +152,60 @@ void HELPER(gvec_vfae_cc##BITS)(void *v1, const void *v2, const void *v3, \
DEF_VFAE_CC_HELPER(8)
DEF_VFAE_CC_HELPER(16)
DEF_VFAE_CC_HELPER(32)
static int vfee(void *v1, const void *v2, const void *v3, bool zs, uint8_t es)
{
const uint64_t mask = get_element_lsbs_mask(es);
uint64_t a0, a1, b0, b1, e0, e1, z0, z1;
uint64_t first_zero = 16;
uint64_t first_equal;
a0 = s390_vec_read_element64(v2, 0);
a1 = s390_vec_read_element64(v2, 1);
b0 = s390_vec_read_element64(v3, 0);
b1 = s390_vec_read_element64(v3, 1);
e0 = zero_search(a0 ^ b0, mask);
e1 = zero_search(a1 ^ b1, mask);
first_equal = match_index(e0, e1);
if (zs) {
z0 = zero_search(a0, mask);
z1 = zero_search(a1, mask);
first_zero = match_index(z0, z1);
}
s390_vec_write_element64(v1, 0, MIN(first_equal, first_zero));
s390_vec_write_element64(v1, 1, 0);
if (first_zero == 16 && first_equal == 16) {
return 3; /* no match */
} else if (first_zero == 16) {
return 1; /* matching elements, no match for zero */
} else if (first_equal < first_zero) {
return 2; /* matching elements before match for zero */
}
return 0; /* match for zero */
}
#define DEF_VFEE_HELPER(BITS) \
void HELPER(gvec_vfee##BITS)(void *v1, const void *v2, const void *v3, \
uint32_t desc) \
{ \
const bool zs = extract32(simd_data(desc), 1, 1); \
\
vfee(v1, v2, v3, zs, MO_##BITS); \
}
DEF_VFEE_HELPER(8)
DEF_VFEE_HELPER(16)
DEF_VFEE_HELPER(32)
#define DEF_VFEE_CC_HELPER(BITS) \
void HELPER(gvec_vfee_cc##BITS)(void *v1, const void *v2, const void *v3, \
CPUS390XState *env, uint32_t desc) \
{ \
const bool zs = extract32(simd_data(desc), 1, 1); \
\
env->cc_op = vfee(v1, v2, v3, zs, MO_##BITS); \
}
DEF_VFEE_CC_HELPER(8)
DEF_VFEE_CC_HELPER(16)
DEF_VFEE_CC_HELPER(32)