diff options
| author | David Hildenbrand <david@redhat.com> | 2019-03-07 13:15:26 +0100 |
|---|---|---|
| committer | Cornelia Huck <cohuck@redhat.com> | 2019-03-11 09:31:01 +0100 |
| commit | 73946f0d556453da9605ee0e258220dfc3dfd622 (patch) | |
| tree | 06f5a4738f854935f325ad3cc88cfbc3c4957ac0 /target/s390x/vec_helper.c | |
| parent | 2ff47e6cce21c7a210d99f018d10a94404e797e9 (diff) | |
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>
Diffstat (limited to 'target/s390x/vec_helper.c')
| -rw-r--r-- | target/s390x/vec_helper.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/target/s390x/vec_helper.c b/target/s390x/vec_helper.c index 5b2333a8d6..7f680201b5 100644 --- a/target/s390x/vec_helper.c +++ b/target/s390x/vec_helper.c @@ -15,6 +15,7 @@ #include "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" @@ -42,3 +43,107 @@ void HELPER(vll)(CPUS390XState *env, void *v1, uint64_t addr, uint64_t bytes) *(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) |