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-rw-r--r--target/s390x/tcg/vec_helper.c214
1 files changed, 214 insertions, 0 deletions
diff --git a/target/s390x/tcg/vec_helper.c b/target/s390x/tcg/vec_helper.c
new file mode 100644
index 0000000000..ededf13cf0
--- /dev/null
+++ b/target/s390x/tcg/vec_helper.c
@@ -0,0 +1,214 @@
+/*
+ * QEMU TCG support -- s390x vector support instructions
+ *
+ * Copyright (C) 2019 Red Hat Inc
+ *
+ * Authors:
+ * David Hildenbrand <david@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "s390x-internal.h"
+#include "vec.h"
+#include "tcg/tcg.h"
+#include "tcg/tcg-gvec-desc.h"
+#include "exec/helper-proto.h"
+#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)) {
+ uint64_t t0, t1;
+
+ t0 = cpu_ldq_data_ra(env, addr, GETPC());
+ addr = wrap_address(env, addr + 8);
+ t1 = cpu_ldq_data_ra(env, addr, GETPC());
+ s390_vec_write_element64(v1, 0, t0);
+ s390_vec_write_element64(v1, 1, t1);
+ } else {
+ S390Vector tmp = {};
+ int i;
+
+ for (i = 0; i < bytes; i++) {
+ uint8_t byte = cpu_ldub_data_ra(env, addr, GETPC());
+
+ s390_vec_write_element8(&tmp, i, byte);
+ addr = wrap_address(env, addr + 1);
+ }
+ *(S390Vector *)v1 = tmp;
+ }
+}
+
+#define DEF_VPK_HFN(BITS, TBITS) \
+typedef uint##TBITS##_t (*vpk##BITS##_fn)(uint##BITS##_t, int *); \
+static int vpk##BITS##_hfn(S390Vector *v1, const S390Vector *v2, \
+ const S390Vector *v3, vpk##BITS##_fn fn) \
+{ \
+ int i, saturated = 0; \
+ S390Vector tmp; \
+ \
+ for (i = 0; i < (128 / TBITS); i++) { \
+ uint##BITS##_t src; \
+ \
+ if (i < (128 / BITS)) { \
+ src = s390_vec_read_element##BITS(v2, i); \
+ } else { \
+ src = s390_vec_read_element##BITS(v3, i - (128 / BITS)); \
+ } \
+ s390_vec_write_element##TBITS(&tmp, i, fn(src, &saturated)); \
+ } \
+ *v1 = tmp; \
+ return saturated; \
+}
+DEF_VPK_HFN(64, 32)
+DEF_VPK_HFN(32, 16)
+DEF_VPK_HFN(16, 8)
+
+#define DEF_VPK(BITS, TBITS) \
+static uint##TBITS##_t vpk##BITS##e(uint##BITS##_t src, int *saturated) \
+{ \
+ return src; \
+} \
+void HELPER(gvec_vpk##BITS)(void *v1, const void *v2, const void *v3, \
+ uint32_t desc) \
+{ \
+ vpk##BITS##_hfn(v1, v2, v3, vpk##BITS##e); \
+}
+DEF_VPK(64, 32)
+DEF_VPK(32, 16)
+DEF_VPK(16, 8)
+
+#define DEF_VPKS(BITS, TBITS) \
+static uint##TBITS##_t vpks##BITS##e(uint##BITS##_t src, int *saturated) \
+{ \
+ if ((int##BITS##_t)src > INT##TBITS##_MAX) { \
+ (*saturated)++; \
+ return INT##TBITS##_MAX; \
+ } else if ((int##BITS##_t)src < INT##TBITS##_MIN) { \
+ (*saturated)++; \
+ return INT##TBITS##_MIN; \
+ } \
+ return src; \
+} \
+void HELPER(gvec_vpks##BITS)(void *v1, const void *v2, const void *v3, \
+ uint32_t desc) \
+{ \
+ vpk##BITS##_hfn(v1, v2, v3, vpks##BITS##e); \
+} \
+void HELPER(gvec_vpks_cc##BITS)(void *v1, const void *v2, const void *v3, \
+ CPUS390XState *env, uint32_t desc) \
+{ \
+ int saturated = vpk##BITS##_hfn(v1, v2, v3, vpks##BITS##e); \
+ \
+ if (saturated == (128 / TBITS)) { \
+ env->cc_op = 3; \
+ } else if (saturated) { \
+ env->cc_op = 1; \
+ } else { \
+ env->cc_op = 0; \
+ } \
+}
+DEF_VPKS(64, 32)
+DEF_VPKS(32, 16)
+DEF_VPKS(16, 8)
+
+#define DEF_VPKLS(BITS, TBITS) \
+static uint##TBITS##_t vpkls##BITS##e(uint##BITS##_t src, int *saturated) \
+{ \
+ if (src > UINT##TBITS##_MAX) { \
+ (*saturated)++; \
+ return UINT##TBITS##_MAX; \
+ } \
+ return src; \
+} \
+void HELPER(gvec_vpkls##BITS)(void *v1, const void *v2, const void *v3, \
+ uint32_t desc) \
+{ \
+ vpk##BITS##_hfn(v1, v2, v3, vpkls##BITS##e); \
+} \
+void HELPER(gvec_vpkls_cc##BITS)(void *v1, const void *v2, const void *v3, \
+ CPUS390XState *env, uint32_t desc) \
+{ \
+ int saturated = vpk##BITS##_hfn(v1, v2, v3, vpkls##BITS##e); \
+ \
+ if (saturated == (128 / TBITS)) { \
+ env->cc_op = 3; \
+ } else if (saturated) { \
+ env->cc_op = 1; \
+ } else { \
+ env->cc_op = 0; \
+ } \
+}
+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;
+}
+
+void HELPER(vstl)(CPUS390XState *env, const void *v1, uint64_t addr,
+ uint64_t bytes)
+{
+ /* Probe write access before actually modifying memory */
+ probe_write_access(env, addr, bytes, GETPC());
+
+ if (likely(bytes >= 16)) {
+ cpu_stq_data_ra(env, addr, s390_vec_read_element64(v1, 0), GETPC());
+ addr = wrap_address(env, addr + 8);
+ cpu_stq_data_ra(env, addr, s390_vec_read_element64(v1, 1), GETPC());
+ } else {
+ S390Vector tmp = {};
+ int i;
+
+ for (i = 0; i < bytes; i++) {
+ uint8_t byte = s390_vec_read_element8(v1, i);
+
+ cpu_stb_data_ra(env, addr, byte, GETPC());
+ addr = wrap_address(env, addr + 1);
+ }
+ *(S390Vector *)v1 = tmp;
+ }
+}
generated by cgit v1.2.3 (git 2.26.2) at 2025-01-06 22:03:59 +0000