diff options
Diffstat (limited to 'target/s390x/vec_int_helper.c')
| -rw-r--r-- | target/s390x/vec_int_helper.c | 616 |
1 files changed, 616 insertions, 0 deletions
diff --git a/target/s390x/vec_int_helper.c b/target/s390x/vec_int_helper.c new file mode 100644 index 0000000000..68eaae407b --- /dev/null +++ b/target/s390x/vec_int_helper.c @@ -0,0 +1,616 @@ +/* + * QEMU TCG support -- s390x vector integer instruction support + * + * 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 "qemu-common.h" +#include "cpu.h" +#include "vec.h" +#include "exec/helper-proto.h" +#include "tcg/tcg-gvec-desc.h" + +static bool s390_vec_is_zero(const S390Vector *v) +{ + return !v->doubleword[0] && !v->doubleword[1]; +} + +static void s390_vec_xor(S390Vector *res, const S390Vector *a, + const S390Vector *b) +{ + res->doubleword[0] = a->doubleword[0] ^ b->doubleword[0]; + res->doubleword[1] = a->doubleword[1] ^ b->doubleword[1]; +} + +static void s390_vec_and(S390Vector *res, const S390Vector *a, + const S390Vector *b) +{ + res->doubleword[0] = a->doubleword[0] & b->doubleword[0]; + res->doubleword[1] = a->doubleword[1] & b->doubleword[1]; +} + +static bool s390_vec_equal(const S390Vector *a, const S390Vector *b) +{ + return a->doubleword[0] == b->doubleword[0] && + a->doubleword[1] == b->doubleword[1]; +} + +static void s390_vec_shl(S390Vector *d, const S390Vector *a, uint64_t count) +{ + uint64_t tmp; + + g_assert(count < 128); + if (count == 0) { + d->doubleword[0] = a->doubleword[0]; + d->doubleword[1] = a->doubleword[1]; + } else if (count == 64) { + d->doubleword[0] = a->doubleword[1]; + d->doubleword[1] = 0; + } else if (count < 64) { + tmp = extract64(a->doubleword[1], 64 - count, count); + d->doubleword[1] = a->doubleword[1] << count; + d->doubleword[0] = (a->doubleword[0] << count) | tmp; + } else { + d->doubleword[0] = a->doubleword[1] << (count - 64); + d->doubleword[1] = 0; + } +} + +static void s390_vec_sar(S390Vector *d, const S390Vector *a, uint64_t count) +{ + uint64_t tmp; + + if (count == 0) { + d->doubleword[0] = a->doubleword[0]; + d->doubleword[1] = a->doubleword[1]; + } else if (count == 64) { + d->doubleword[1] = a->doubleword[0]; + d->doubleword[0] = 0; + } else if (count < 64) { + tmp = a->doubleword[1] >> count; + d->doubleword[1] = deposit64(tmp, 64 - count, count, a->doubleword[0]); + d->doubleword[0] = (int64_t)a->doubleword[0] >> count; + } else { + d->doubleword[1] = (int64_t)a->doubleword[0] >> (count - 64); + d->doubleword[0] = 0; + } +} + +static void s390_vec_shr(S390Vector *d, const S390Vector *a, uint64_t count) +{ + uint64_t tmp; + + g_assert(count < 128); + if (count == 0) { + d->doubleword[0] = a->doubleword[0]; + d->doubleword[1] = a->doubleword[1]; + } else if (count == 64) { + d->doubleword[1] = a->doubleword[0]; + d->doubleword[0] = 0; + } else if (count < 64) { + tmp = a->doubleword[1] >> count; + d->doubleword[1] = deposit64(tmp, 64 - count, count, a->doubleword[0]); + d->doubleword[0] = a->doubleword[0] >> count; + } else { + d->doubleword[1] = a->doubleword[0] >> (count - 64); + d->doubleword[0] = 0; + } +} +#define DEF_VAVG(BITS) \ +void HELPER(gvec_vavg##BITS)(void *v1, const void *v2, const void *v3, \ + uint32_t desc) \ +{ \ + int i; \ + \ + for (i = 0; i < (128 / BITS); i++) { \ + const int32_t a = (int##BITS##_t)s390_vec_read_element##BITS(v2, i); \ + const int32_t b = (int##BITS##_t)s390_vec_read_element##BITS(v3, i); \ + \ + s390_vec_write_element##BITS(v1, i, (a + b + 1) >> 1); \ + } \ +} +DEF_VAVG(8) +DEF_VAVG(16) + +#define DEF_VAVGL(BITS) \ +void HELPER(gvec_vavgl##BITS)(void *v1, const void *v2, const void *v3, \ + uint32_t desc) \ +{ \ + int i; \ + \ + for (i = 0; i < (128 / BITS); i++) { \ + const uint##BITS##_t a = s390_vec_read_element##BITS(v2, i); \ + const uint##BITS##_t b = s390_vec_read_element##BITS(v3, i); \ + \ + s390_vec_write_element##BITS(v1, i, (a + b + 1) >> 1); \ + } \ +} +DEF_VAVGL(8) +DEF_VAVGL(16) + +#define DEF_VCLZ(BITS) \ +void HELPER(gvec_vclz##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, clz32(a) - 32 + BITS); \ + } \ +} +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) + +/* like binary multiplication, but XOR instead of addition */ +#define DEF_GALOIS_MULTIPLY(BITS, TBITS) \ +static uint##TBITS##_t galois_multiply##BITS(uint##TBITS##_t a, \ + uint##TBITS##_t b) \ +{ \ + uint##TBITS##_t res = 0; \ + \ + while (b) { \ + if (b & 0x1) { \ + res = res ^ a; \ + } \ + a = a << 1; \ + b = b >> 1; \ + } \ + return res; \ +} +DEF_GALOIS_MULTIPLY(8, 16) +DEF_GALOIS_MULTIPLY(16, 32) +DEF_GALOIS_MULTIPLY(32, 64) + +static S390Vector galois_multiply64(uint64_t a, uint64_t b) +{ + S390Vector res = {}; + S390Vector va = { + .doubleword[1] = a, + }; + S390Vector vb = { + .doubleword[1] = b, + }; + + while (!s390_vec_is_zero(&vb)) { + if (vb.doubleword[1] & 0x1) { + s390_vec_xor(&res, &res, &va); + } + s390_vec_shl(&va, &va, 1); + s390_vec_shr(&vb, &vb, 1); + } + return res; +} + +#define DEF_VGFM(BITS, TBITS) \ +void HELPER(gvec_vgfm##BITS)(void *v1, const void *v2, const void *v3, \ + uint32_t desc) \ +{ \ + int i; \ + \ + for (i = 0; i < (128 / TBITS); i++) { \ + uint##BITS##_t a = s390_vec_read_element##BITS(v2, i * 2); \ + uint##BITS##_t b = s390_vec_read_element##BITS(v3, i * 2); \ + uint##TBITS##_t d = galois_multiply##BITS(a, b); \ + \ + a = s390_vec_read_element##BITS(v2, i * 2 + 1); \ + b = s390_vec_read_element##BITS(v3, i * 2 + 1); \ + d = d ^ galois_multiply32(a, b); \ + s390_vec_write_element##TBITS(v1, i, d); \ + } \ +} +DEF_VGFM(8, 16) +DEF_VGFM(16, 32) +DEF_VGFM(32, 64) + +void HELPER(gvec_vgfm64)(void *v1, const void *v2, const void *v3, + uint32_t desc) +{ + S390Vector tmp1, tmp2; + uint64_t a, b; + + a = s390_vec_read_element64(v2, 0); + b = s390_vec_read_element64(v3, 0); + tmp1 = galois_multiply64(a, b); + a = s390_vec_read_element64(v2, 1); + b = s390_vec_read_element64(v3, 1); + tmp2 = galois_multiply64(a, b); + s390_vec_xor(v1, &tmp1, &tmp2); +} + +#define DEF_VGFMA(BITS, TBITS) \ +void HELPER(gvec_vgfma##BITS)(void *v1, const void *v2, const void *v3, \ + const void *v4, uint32_t desc) \ +{ \ + int i; \ + \ + for (i = 0; i < (128 / TBITS); i++) { \ + uint##BITS##_t a = s390_vec_read_element##BITS(v2, i * 2); \ + uint##BITS##_t b = s390_vec_read_element##BITS(v3, i * 2); \ + uint##TBITS##_t d = galois_multiply##BITS(a, b); \ + \ + a = s390_vec_read_element##BITS(v2, i * 2 + 1); \ + b = s390_vec_read_element##BITS(v3, i * 2 + 1); \ + d = d ^ galois_multiply32(a, b); \ + d = d ^ s390_vec_read_element##TBITS(v4, i); \ + s390_vec_write_element##TBITS(v1, i, d); \ + } \ +} +DEF_VGFMA(8, 16) +DEF_VGFMA(16, 32) +DEF_VGFMA(32, 64) + +void HELPER(gvec_vgfma64)(void *v1, const void *v2, const void *v3, + const void *v4, uint32_t desc) +{ + S390Vector tmp1, tmp2; + uint64_t a, b; + + a = s390_vec_read_element64(v2, 0); + b = s390_vec_read_element64(v3, 0); + tmp1 = galois_multiply64(a, b); + a = s390_vec_read_element64(v2, 1); + b = s390_vec_read_element64(v3, 1); + tmp2 = galois_multiply64(a, b); + s390_vec_xor(&tmp1, &tmp1, &tmp2); + s390_vec_xor(v1, &tmp1, v4); +} + +#define DEF_VMAL(BITS) \ +void HELPER(gvec_vmal##BITS)(void *v1, const void *v2, const void *v3, \ + const void *v4, uint32_t desc) \ +{ \ + int i; \ + \ + for (i = 0; i < (128 / BITS); i++) { \ + const uint##BITS##_t a = s390_vec_read_element##BITS(v2, i); \ + const uint##BITS##_t b = s390_vec_read_element##BITS(v3, i); \ + const uint##BITS##_t c = s390_vec_read_element##BITS(v4, i); \ + \ + s390_vec_write_element##BITS(v1, i, a * b + c); \ + } \ +} +DEF_VMAL(8) +DEF_VMAL(16) + +#define DEF_VMAH(BITS) \ +void HELPER(gvec_vmah##BITS)(void *v1, const void *v2, const void *v3, \ + const void *v4, uint32_t desc) \ +{ \ + int i; \ + \ + for (i = 0; i < (128 / BITS); i++) { \ + const int32_t a = (int##BITS##_t)s390_vec_read_element##BITS(v2, i); \ + const int32_t b = (int##BITS##_t)s390_vec_read_element##BITS(v3, i); \ + const int32_t c = (int##BITS##_t)s390_vec_read_element##BITS(v4, i); \ + \ + s390_vec_write_element##BITS(v1, i, (a * b + c) >> BITS); \ + } \ +} +DEF_VMAH(8) +DEF_VMAH(16) + +#define DEF_VMALH(BITS) \ +void HELPER(gvec_vmalh##BITS)(void *v1, const void *v2, const void *v3, \ + const void *v4, uint32_t desc) \ +{ \ + int i; \ + \ + for (i = 0; i < (128 / BITS); i++) { \ + const uint##BITS##_t a = s390_vec_read_element##BITS(v2, i); \ + const uint##BITS##_t b = s390_vec_read_element##BITS(v3, i); \ + const uint##BITS##_t c = s390_vec_read_element##BITS(v4, i); \ + \ + s390_vec_write_element##BITS(v1, i, (a * b + c) >> BITS); \ + } \ +} +DEF_VMALH(8) +DEF_VMALH(16) + +#define DEF_VMAE(BITS, TBITS) \ +void HELPER(gvec_vmae##BITS)(void *v1, const void *v2, const void *v3, \ + const void *v4, uint32_t desc) \ +{ \ + int i, j; \ + \ + for (i = 0, j = 0; i < (128 / TBITS); i++, j += 2) { \ + int##TBITS##_t a = (int##BITS##_t)s390_vec_read_element##BITS(v2, j); \ + int##TBITS##_t b = (int##BITS##_t)s390_vec_read_element##BITS(v3, j); \ + int##TBITS##_t c = (int##BITS##_t)s390_vec_read_element##BITS(v4, j); \ + \ + s390_vec_write_element##TBITS(v1, i, a * b + c); \ + } \ +} +DEF_VMAE(8, 16) +DEF_VMAE(16, 32) +DEF_VMAE(32, 64) + +#define DEF_VMALE(BITS, TBITS) \ +void HELPER(gvec_vmale##BITS)(void *v1, const void *v2, const void *v3, \ + const void *v4, uint32_t desc) \ +{ \ + int i, j; \ + \ + for (i = 0, j = 0; i < (128 / TBITS); i++, j += 2) { \ + uint##TBITS##_t a = s390_vec_read_element##BITS(v2, j); \ + uint##TBITS##_t b = s390_vec_read_element##BITS(v3, j); \ + uint##TBITS##_t c = s390_vec_read_element##BITS(v4, j); \ + \ + s390_vec_write_element##TBITS(v1, i, a * b + c); \ + } \ +} +DEF_VMALE(8, 16) +DEF_VMALE(16, 32) +DEF_VMALE(32, 64) + +#define DEF_VMAO(BITS, TBITS) \ +void HELPER(gvec_vmao##BITS)(void *v1, const void *v2, const void *v3, \ + const void *v4, uint32_t desc) \ +{ \ + int i, j; \ + \ + for (i = 0, j = 1; i < (128 / TBITS); i++, j += 2) { \ + int##TBITS##_t a = (int##BITS##_t)s390_vec_read_element##BITS(v2, j); \ + int##TBITS##_t b = (int##BITS##_t)s390_vec_read_element##BITS(v3, j); \ + int##TBITS##_t c = (int##BITS##_t)s390_vec_read_element##BITS(v4, j); \ + \ + s390_vec_write_element##TBITS(v1, i, a * b + c); \ + } \ +} +DEF_VMAO(8, 16) +DEF_VMAO(16, 32) +DEF_VMAO(32, 64) + +#define DEF_VMALO(BITS, TBITS) \ +void HELPER(gvec_vmalo##BITS)(void *v1, const void *v2, const void *v3, \ + const void *v4, uint32_t desc) \ +{ \ + int i, j; \ + \ + for (i = 0, j = 1; i < (128 / TBITS); i++, j += 2) { \ + uint##TBITS##_t a = s390_vec_read_element##BITS(v2, j); \ + uint##TBITS##_t b = s390_vec_read_element##BITS(v3, j); \ + uint##TBITS##_t c = s390_vec_read_element##BITS(v4, j); \ + \ + s390_vec_write_element##TBITS(v1, i, a * b + c); \ + } \ +} +DEF_VMALO(8, 16) +DEF_VMALO(16, 32) +DEF_VMALO(32, 64) + +#define DEF_VMH(BITS) \ +void HELPER(gvec_vmh##BITS)(void *v1, const void *v2, const void *v3, \ + uint32_t desc) \ +{ \ + int i; \ + \ + for (i = 0; i < (128 / BITS); i++) { \ + const int32_t a = (int##BITS##_t)s390_vec_read_element##BITS(v2, i); \ + const int32_t b = (int##BITS##_t)s390_vec_read_element##BITS(v3, i); \ + \ + s390_vec_write_element##BITS(v1, i, (a * b) >> BITS); \ + } \ +} +DEF_VMH(8) +DEF_VMH(16) + +#define DEF_VMLH(BITS) \ +void HELPER(gvec_vmlh##BITS)(void *v1, const void *v2, const void *v3, \ + uint32_t desc) \ +{ \ + int i; \ + \ + for (i = 0; i < (128 / BITS); i++) { \ + const uint##BITS##_t a = s390_vec_read_element##BITS(v2, i); \ + const uint##BITS##_t b = s390_vec_read_element##BITS(v3, i); \ + \ + s390_vec_write_element##BITS(v1, i, (a * b) >> BITS); \ + } \ +} +DEF_VMLH(8) +DEF_VMLH(16) + +#define DEF_VME(BITS, TBITS) \ +void HELPER(gvec_vme##BITS)(void *v1, const void *v2, const void *v3, \ + uint32_t desc) \ +{ \ + int i, j; \ + \ + for (i = 0, j = 0; i < (128 / TBITS); i++, j += 2) { \ + int##TBITS##_t a = (int##BITS##_t)s390_vec_read_element##BITS(v2, j); \ + int##TBITS##_t b = (int##BITS##_t)s390_vec_read_element##BITS(v3, j); \ + \ + s390_vec_write_element##TBITS(v1, i, a * b); \ + } \ +} +DEF_VME(8, 16) +DEF_VME(16, 32) +DEF_VME(32, 64) + +#define DEF_VMLE(BITS, TBITS) \ +void HELPER(gvec_vmle##BITS)(void *v1, const void *v2, const void *v3, \ + uint32_t desc) \ +{ \ + int i, j; \ + \ + for (i = 0, j = 0; i < (128 / TBITS); i++, j += 2) { \ + const uint##TBITS##_t a = s390_vec_read_element##BITS(v2, j); \ + const uint##TBITS##_t b = s390_vec_read_element##BITS(v3, j); \ + \ + s390_vec_write_element##TBITS(v1, i, a * b); \ + } \ +} +DEF_VMLE(8, 16) +DEF_VMLE(16, 32) +DEF_VMLE(32, 64) + +#define DEF_VMO(BITS, TBITS) \ +void HELPER(gvec_vmo##BITS)(void *v1, const void *v2, const void *v3, \ + uint32_t desc) \ +{ \ + int i, j; \ + \ + for (i = 0, j = 1; i < (128 / TBITS); i++, j += 2) { \ + int##TBITS##_t a = (int##BITS##_t)s390_vec_read_element##BITS(v2, j); \ + int##TBITS##_t b = (int##BITS##_t)s390_vec_read_element##BITS(v3, j); \ + \ + s390_vec_write_element##TBITS(v1, i, a * b); \ + } \ +} +DEF_VMO(8, 16) +DEF_VMO(16, 32) +DEF_VMO(32, 64) + +#define DEF_VMLO(BITS, TBITS) \ +void HELPER(gvec_vmlo##BITS)(void *v1, const void *v2, const void *v3, \ + uint32_t desc) \ +{ \ + int i, j; \ + \ + for (i = 0, j = 0; i < (128 / TBITS); i++, j += 2) { \ + const uint##TBITS##_t a = s390_vec_read_element##BITS(v2, j); \ + const uint##TBITS##_t b = s390_vec_read_element##BITS(v3, j); \ + \ + s390_vec_write_element##TBITS(v1, i, a * b); \ + } \ +} +DEF_VMLO(8, 16) +DEF_VMLO(16, 32) +DEF_VMLO(32, 64) + +#define DEF_VPOPCT(BITS) \ +void HELPER(gvec_vpopct##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, ctpop32(a)); \ + } \ +} +DEF_VPOPCT(8) +DEF_VPOPCT(16) + +#define DEF_VERLLV(BITS) \ +void HELPER(gvec_verllv##BITS)(void *v1, const void *v2, const void *v3, \ + uint32_t desc) \ +{ \ + int i; \ + \ + for (i = 0; i < (128 / BITS); i++) { \ + const uint##BITS##_t a = s390_vec_read_element##BITS(v2, i); \ + const uint##BITS##_t b = s390_vec_read_element##BITS(v3, i); \ + \ + s390_vec_write_element##BITS(v1, i, rol##BITS(a, b)); \ + } \ +} +DEF_VERLLV(8) +DEF_VERLLV(16) + +#define DEF_VERLL(BITS) \ +void HELPER(gvec_verll##BITS)(void *v1, const void *v2, uint64_t count, \ + 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, rol##BITS(a, count)); \ + } \ +} +DEF_VERLL(8) +DEF_VERLL(16) + +#define DEF_VERIM(BITS) \ +void HELPER(gvec_verim##BITS)(void *v1, const void *v2, const void *v3, \ + uint32_t desc) \ +{ \ + const uint8_t count = simd_data(desc); \ + int i; \ + \ + for (i = 0; i < (128 / BITS); i++) { \ + const uint##BITS##_t a = s390_vec_read_element##BITS(v1, i); \ + const uint##BITS##_t b = s390_vec_read_element##BITS(v2, i); \ + const uint##BITS##_t mask = s390_vec_read_element##BITS(v3, i); \ + const uint##BITS##_t d = (a & ~mask) | (rol##BITS(b, count) & mask); \ + \ + s390_vec_write_element##BITS(v1, i, d); \ + } \ +} +DEF_VERIM(8) +DEF_VERIM(16) + +void HELPER(gvec_vsl)(void *v1, const void *v2, uint64_t count, + uint32_t desc) +{ + s390_vec_shl(v1, v2, count); +} + +void HELPER(gvec_vsra)(void *v1, const void *v2, uint64_t count, + uint32_t desc) +{ + s390_vec_sar(v1, v2, count); +} + +void HELPER(gvec_vsrl)(void *v1, const void *v2, uint64_t count, + uint32_t desc) +{ + s390_vec_shr(v1, v2, count); +} + +#define DEF_VSCBI(BITS) \ +void HELPER(gvec_vscbi##BITS)(void *v1, const void *v2, const void *v3, \ + uint32_t desc) \ +{ \ + int i; \ + \ + for (i = 0; i < (128 / BITS); i++) { \ + const uint##BITS##_t a = s390_vec_read_element##BITS(v2, i); \ + const uint##BITS##_t b = s390_vec_read_element##BITS(v3, i); \ + \ + s390_vec_write_element##BITS(v1, i, a < b); \ + } \ +} +DEF_VSCBI(8) +DEF_VSCBI(16) + +void HELPER(gvec_vtm)(void *v1, const void *v2, CPUS390XState *env, + uint32_t desc) +{ + S390Vector tmp; + + s390_vec_and(&tmp, v1, v2); + if (s390_vec_is_zero(&tmp)) { + /* Selected bits all zeros; or all mask bits zero */ + env->cc_op = 0; + } else if (s390_vec_equal(&tmp, v2)) { + /* Selected bits all ones */ + env->cc_op = 3; + } else { + /* Selected bits a mix of zeros and ones */ + env->cc_op = 1; + } +} |