s390x/tcg: Implement VECTOR PACK *
This is a big one. Luckily we only have a limited set of such nasty instructions. We'll implement all variants with helpers, except when sources and the destination don't overlap for VECTOR PACK. Provide different helpers when the cc is to be modified. We'll return the cc then via env->cc_op. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20190307121539.12842-20-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
David Hildenbrand
Cornelia Huck
parent
2ff47e6cce
commit
73946f0d55
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@ -126,6 +126,21 @@ DEF_HELPER_FLAGS_1(stck, TCG_CALL_NO_RWG_SE, i64, env)
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/* === Vector Support Instructions === */
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DEF_HELPER_FLAGS_4(vll, TCG_CALL_NO_WG, void, env, ptr, i64, i64)
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DEF_HELPER_FLAGS_4(gvec_vpk16, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
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DEF_HELPER_FLAGS_4(gvec_vpk32, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
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DEF_HELPER_FLAGS_4(gvec_vpk64, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
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DEF_HELPER_FLAGS_4(gvec_vpks16, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
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DEF_HELPER_FLAGS_4(gvec_vpks32, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
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DEF_HELPER_FLAGS_4(gvec_vpks64, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
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DEF_HELPER_5(gvec_vpks_cc16, void, ptr, cptr, cptr, env, i32)
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DEF_HELPER_5(gvec_vpks_cc32, void, ptr, cptr, cptr, env, i32)
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DEF_HELPER_5(gvec_vpks_cc64, void, ptr, cptr, cptr, env, i32)
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DEF_HELPER_FLAGS_4(gvec_vpkls16, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
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DEF_HELPER_FLAGS_4(gvec_vpkls32, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
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DEF_HELPER_FLAGS_4(gvec_vpkls64, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
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DEF_HELPER_5(gvec_vpkls_cc16, void, ptr, cptr, cptr, env, i32)
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DEF_HELPER_5(gvec_vpkls_cc32, void, ptr, cptr, cptr, env, i32)
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DEF_HELPER_5(gvec_vpkls_cc64, void, ptr, cptr, cptr, env, i32)
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#ifndef CONFIG_USER_ONLY
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DEF_HELPER_3(servc, i32, env, i64, i64)
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@ -1014,6 +1014,12 @@
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F(0xe761, VMRH, VRR_c, V, 0, 0, 0, 0, vmr, 0, IF_VEC)
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/* VECTOR MERGE LOW */
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F(0xe760, VMRL, VRR_c, V, 0, 0, 0, 0, vmr, 0, IF_VEC)
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/* VECTOR PACK */
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F(0xe794, VPK, VRR_c, V, 0, 0, 0, 0, vpk, 0, IF_VEC)
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/* VECTOR PACK SATURATE */
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F(0xe797, VPKS, VRR_b, V, 0, 0, 0, 0, vpk, 0, IF_VEC)
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/* VECTOR PACK LOGICAL SATURATE */
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F(0xe795, VPKLS, VRR_b, V, 0, 0, 0, 0, vpk, 0, IF_VEC)
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#ifndef CONFIG_USER_ONLY
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/* COMPARE AND SWAP AND PURGE */
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@ -135,6 +135,12 @@ static void get_vec_element_ptr_i64(TCGv_ptr ptr, uint8_t reg, TCGv_i64 enr,
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tcg_temp_free_i64(tmp);
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}
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#define gen_gvec_3_ool(v1, v2, v3, data, fn) \
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tcg_gen_gvec_3_ool(vec_full_reg_offset(v1), vec_full_reg_offset(v2), \
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vec_full_reg_offset(v3), 16, 16, data, fn)
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#define gen_gvec_3_ptr(v1, v2, v3, ptr, data, fn) \
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tcg_gen_gvec_3_ptr(vec_full_reg_offset(v1), vec_full_reg_offset(v2), \
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vec_full_reg_offset(v3), ptr, 16, 16, data, fn)
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#define gen_gvec_dup_i64(es, v1, c) \
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tcg_gen_gvec_dup_i64(es, vec_full_reg_offset(v1), 16, 16, c)
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#define gen_gvec_mov(v1, v2) \
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@ -574,3 +580,86 @@ static DisasJumpType op_vmr(DisasContext *s, DisasOps *o)
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tcg_temp_free_i64(tmp);
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return DISAS_NEXT;
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}
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static DisasJumpType op_vpk(DisasContext *s, DisasOps *o)
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{
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const uint8_t v1 = get_field(s->fields, v1);
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const uint8_t v2 = get_field(s->fields, v2);
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const uint8_t v3 = get_field(s->fields, v3);
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const uint8_t es = get_field(s->fields, m4);
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static gen_helper_gvec_3 * const vpk[3] = {
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gen_helper_gvec_vpk16,
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gen_helper_gvec_vpk32,
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gen_helper_gvec_vpk64,
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};
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static gen_helper_gvec_3 * const vpks[3] = {
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gen_helper_gvec_vpks16,
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gen_helper_gvec_vpks32,
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gen_helper_gvec_vpks64,
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};
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static gen_helper_gvec_3_ptr * const vpks_cc[3] = {
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gen_helper_gvec_vpks_cc16,
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gen_helper_gvec_vpks_cc32,
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gen_helper_gvec_vpks_cc64,
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};
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static gen_helper_gvec_3 * const vpkls[3] = {
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gen_helper_gvec_vpkls16,
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gen_helper_gvec_vpkls32,
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gen_helper_gvec_vpkls64,
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};
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static gen_helper_gvec_3_ptr * const vpkls_cc[3] = {
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gen_helper_gvec_vpkls_cc16,
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gen_helper_gvec_vpkls_cc32,
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gen_helper_gvec_vpkls_cc64,
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};
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if (es == ES_8 || es > ES_64) {
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gen_program_exception(s, PGM_SPECIFICATION);
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return DISAS_NORETURN;
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}
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switch (s->fields->op2) {
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case 0x97:
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if (get_field(s->fields, m5) & 0x1) {
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gen_gvec_3_ptr(v1, v2, v3, cpu_env, 0, vpks_cc[es - 1]);
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set_cc_static(s);
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} else {
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gen_gvec_3_ool(v1, v2, v3, 0, vpks[es - 1]);
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}
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break;
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case 0x95:
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if (get_field(s->fields, m5) & 0x1) {
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gen_gvec_3_ptr(v1, v2, v3, cpu_env, 0, vpkls_cc[es - 1]);
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set_cc_static(s);
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} else {
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gen_gvec_3_ool(v1, v2, v3, 0, vpkls[es - 1]);
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}
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break;
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case 0x94:
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/* If sources and destination dont't overlap -> fast path */
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if (v1 != v2 && v1 != v3) {
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const uint8_t src_es = get_field(s->fields, m4);
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const uint8_t dst_es = src_es - 1;
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TCGv_i64 tmp = tcg_temp_new_i64();
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int dst_idx, src_idx;
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for (dst_idx = 0; dst_idx < NUM_VEC_ELEMENTS(dst_es); dst_idx++) {
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src_idx = dst_idx;
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if (src_idx < NUM_VEC_ELEMENTS(src_es)) {
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read_vec_element_i64(tmp, v2, src_idx, src_es);
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} else {
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src_idx -= NUM_VEC_ELEMENTS(src_es);
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read_vec_element_i64(tmp, v3, src_idx, src_es);
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}
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write_vec_element_i64(tmp, v1, dst_idx, dst_es);
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}
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tcg_temp_free_i64(tmp);
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} else {
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gen_gvec_3_ool(v1, v2, v3, 0, vpk[es - 1]);
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}
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break;
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default:
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g_assert_not_reached();
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}
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return DISAS_NEXT;
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}
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@ -15,6 +15,7 @@
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#include "internal.h"
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#include "vec.h"
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#include "tcg/tcg.h"
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#include "tcg/tcg-gvec-desc.h"
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#include "exec/helper-proto.h"
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#include "exec/cpu_ldst.h"
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#include "exec/exec-all.h"
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@ -42,3 +43,107 @@ void HELPER(vll)(CPUS390XState *env, void *v1, uint64_t addr, uint64_t bytes)
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*(S390Vector *)v1 = tmp;
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}
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}
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#define DEF_VPK_HFN(BITS, TBITS) \
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typedef uint##TBITS##_t (*vpk##BITS##_fn)(uint##BITS##_t, int *); \
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static int vpk##BITS##_hfn(S390Vector *v1, const S390Vector *v2, \
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const S390Vector *v3, vpk##BITS##_fn fn) \
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{ \
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int i, saturated = 0; \
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S390Vector tmp; \
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\
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for (i = 0; i < (128 / TBITS); i++) { \
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uint##BITS##_t src; \
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\
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if (i < (128 / BITS)) { \
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src = s390_vec_read_element##BITS(v2, i); \
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} else { \
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src = s390_vec_read_element##BITS(v3, i - (128 / BITS)); \
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} \
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s390_vec_write_element##TBITS(&tmp, i, fn(src, &saturated)); \
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} \
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*v1 = tmp; \
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return saturated; \
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}
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DEF_VPK_HFN(64, 32)
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DEF_VPK_HFN(32, 16)
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DEF_VPK_HFN(16, 8)
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#define DEF_VPK(BITS, TBITS) \
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static uint##TBITS##_t vpk##BITS##e(uint##BITS##_t src, int *saturated) \
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{ \
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return src; \
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} \
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void HELPER(gvec_vpk##BITS)(void *v1, const void *v2, const void *v3, \
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uint32_t desc) \
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{ \
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vpk##BITS##_hfn(v1, v2, v3, vpk##BITS##e); \
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}
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DEF_VPK(64, 32)
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DEF_VPK(32, 16)
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DEF_VPK(16, 8)
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#define DEF_VPKS(BITS, TBITS) \
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static uint##TBITS##_t vpks##BITS##e(uint##BITS##_t src, int *saturated) \
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{ \
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if ((int##BITS##_t)src > INT##TBITS##_MAX) { \
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(*saturated)++; \
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return INT##TBITS##_MAX; \
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} else if ((int##BITS##_t)src < INT##TBITS##_MIN) { \
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(*saturated)++; \
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return INT##TBITS##_MIN; \
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} \
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return src; \
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} \
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void HELPER(gvec_vpks##BITS)(void *v1, const void *v2, const void *v3, \
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uint32_t desc) \
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{ \
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vpk##BITS##_hfn(v1, v2, v3, vpks##BITS##e); \
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} \
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void HELPER(gvec_vpks_cc##BITS)(void *v1, const void *v2, const void *v3, \
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CPUS390XState *env, uint32_t desc) \
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{ \
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int saturated = vpk##BITS##_hfn(v1, v2, v3, vpks##BITS##e); \
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\
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if (saturated == (128 / TBITS)) { \
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env->cc_op = 3; \
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} else if (saturated) { \
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env->cc_op = 1; \
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} else { \
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env->cc_op = 0; \
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} \
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}
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DEF_VPKS(64, 32)
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DEF_VPKS(32, 16)
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DEF_VPKS(16, 8)
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#define DEF_VPKLS(BITS, TBITS) \
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static uint##TBITS##_t vpkls##BITS##e(uint##BITS##_t src, int *saturated) \
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{ \
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if (src > UINT##TBITS##_MAX) { \
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(*saturated)++; \
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return UINT##TBITS##_MAX; \
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} \
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return src; \
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} \
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void HELPER(gvec_vpkls##BITS)(void *v1, const void *v2, const void *v3, \
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uint32_t desc) \
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{ \
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vpk##BITS##_hfn(v1, v2, v3, vpkls##BITS##e); \
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} \
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void HELPER(gvec_vpkls_cc##BITS)(void *v1, const void *v2, const void *v3, \
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CPUS390XState *env, uint32_t desc) \
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{ \
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int saturated = vpk##BITS##_hfn(v1, v2, v3, vpkls##BITS##e); \
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\
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if (saturated == (128 / TBITS)) { \
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env->cc_op = 3; \
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} else if (saturated) { \
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env->cc_op = 1; \
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} else { \
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env->cc_op = 0; \
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} \
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}
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DEF_VPKLS(64, 32)
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DEF_VPKLS(32, 16)
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DEF_VPKLS(16, 8)
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