diff options
| author | David Hildenbrand <david@redhat.com> | 2019-03-21 10:36:26 +0100 |
|---|---|---|
| committer | David Hildenbrand <david@redhat.com> | 2019-05-17 10:54:13 +0200 |
| commit | 449a8ac250612d4ce692df584ab105ad098b96af (patch) | |
| tree | c6356ee73da04e075e9a115f4061ebd5bd2788d9 /target | |
| parent | 28863f1dbda5ef1e7e1e4b75857ac0fdb52424f5 (diff) | |
s390x/tcg: Implement VECTOR COUNT TRAILING ZEROS
Implement it similar to VECTOR COUNT LEADING ZEROS.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Diffstat (limited to 'target')
| -rw-r--r-- | target/s390x/helper.h | 2 | ||||
| -rw-r--r-- | target/s390x/insn-data.def | 2 | ||||
| -rw-r--r-- | target/s390x/translate_vx.inc.c | 28 | ||||
| -rw-r--r-- | target/s390x/vec_int_helper.c | 14 |
4 files changed, 46 insertions, 0 deletions
diff --git a/target/s390x/helper.h b/target/s390x/helper.h index 670677427c..60b8bd3c43 100644 --- a/target/s390x/helper.h +++ b/target/s390x/helper.h @@ -152,6 +152,8 @@ DEF_HELPER_FLAGS_4(gvec_vavgl8, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32) DEF_HELPER_FLAGS_4(gvec_vavgl16, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32) DEF_HELPER_FLAGS_3(gvec_vclz8, TCG_CALL_NO_RWG, void, ptr, cptr, i32) DEF_HELPER_FLAGS_3(gvec_vclz16, TCG_CALL_NO_RWG, void, ptr, cptr, i32) +DEF_HELPER_FLAGS_3(gvec_vctz8, TCG_CALL_NO_RWG, void, ptr, cptr, i32) +DEF_HELPER_FLAGS_3(gvec_vctz16, TCG_CALL_NO_RWG, void, ptr, cptr, i32) #ifndef CONFIG_USER_ONLY DEF_HELPER_3(servc, i32, env, i64, i64) diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def index be3c07aafb..a355b7f62f 100644 --- a/target/s390x/insn-data.def +++ b/target/s390x/insn-data.def @@ -1086,6 +1086,8 @@ E(0xe7f9, VCHL, VRR_b, V, 0, 0, 0, 0, vc, 0, TCG_COND_GTU, IF_VEC) /* VECTOR COUNT LEADING ZEROS */ F(0xe753, VCLZ, VRR_a, V, 0, 0, 0, 0, vclz, 0, IF_VEC) +/* VECTOR COUNT TRAILING ZEROS */ + F(0xe752, VCTZ, VRR_a, V, 0, 0, 0, 0, vctz, 0, IF_VEC) #ifndef CONFIG_USER_ONLY /* COMPARE AND SWAP AND PURGE */ diff --git a/target/s390x/translate_vx.inc.c b/target/s390x/translate_vx.inc.c index 948c9fbbb1..2f13d6fa9f 100644 --- a/target/s390x/translate_vx.inc.c +++ b/target/s390x/translate_vx.inc.c @@ -1448,3 +1448,31 @@ static DisasJumpType op_vclz(DisasContext *s, DisasOps *o) gen_gvec_2(get_field(s->fields, v1), get_field(s->fields, v2), &g[es]); return DISAS_NEXT; } + +static void gen_ctz_i32(TCGv_i32 d, TCGv_i32 a) +{ + tcg_gen_ctzi_i32(d, a, 32); +} + +static void gen_ctz_i64(TCGv_i64 d, TCGv_i64 a) +{ + tcg_gen_ctzi_i64(d, a, 64); +} + +static DisasJumpType op_vctz(DisasContext *s, DisasOps *o) +{ + const uint8_t es = get_field(s->fields, m3); + static const GVecGen2 g[4] = { + { .fno = gen_helper_gvec_vctz8, }, + { .fno = gen_helper_gvec_vctz16, }, + { .fni4 = gen_ctz_i32, }, + { .fni8 = gen_ctz_i64, }, + }; + + if (es > ES_64) { + gen_program_exception(s, PGM_SPECIFICATION); + return DISAS_NORETURN; + } + gen_gvec_2(get_field(s->fields, v1), get_field(s->fields, v2), &g[es]); + return DISAS_NEXT; +} diff --git a/target/s390x/vec_int_helper.c b/target/s390x/vec_int_helper.c index 016512547c..d1b1f28509 100644 --- a/target/s390x/vec_int_helper.c +++ b/target/s390x/vec_int_helper.c @@ -60,3 +60,17 @@ void HELPER(gvec_vclz##BITS)(void *v1, const void *v2, uint32_t desc) \ } DEF_VCLZ(8) DEF_VCLZ(16) + +#define DEF_VCTZ(BITS) \ +void HELPER(gvec_vctz##BITS)(void *v1, const void *v2, uint32_t desc) \ +{ \ + int i; \ + \ + for (i = 0; i < (128 / BITS); i++) { \ + const uint##BITS##_t a = s390_vec_read_element##BITS(v2, i); \ + \ + s390_vec_write_element##BITS(v1, i, a ? ctz32(a) : BITS); \ + } \ +} +DEF_VCTZ(8) +DEF_VCTZ(16) |