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target/ppc: Use clmul_8* routines

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Use generic routines for 8-bit carry-less multiply.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-07-11 08:00:21 +01:00
parent 2d8bc6815e
commit cec4090d94
1 changed files with 13 additions and 1 deletions
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14
target/ppc/int_helper.c
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@ -25,6 +25,7 @@
#include "exec/helper-proto.h" #include "exec/helper-proto.h"
#include "crypto/aes.h" #include "crypto/aes.h"
#include "crypto/aes-round.h" #include "crypto/aes-round.h"
#include "crypto/clmul.h"
#include "fpu/softfloat.h" #include "fpu/softfloat.h"
#include "qapi/error.h" #include "qapi/error.h"
#include "qemu/guest-random.h" #include "qemu/guest-random.h"
@ -1424,6 +1425,18 @@ void helper_vbpermq(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
#undef VBPERMQ_INDEX #undef VBPERMQ_INDEX
#undef VBPERMQ_DW #undef VBPERMQ_DW
/*
* There is no carry across the two doublewords, so their order does
* not matter. Nor is there partial overlap between registers.
*/
void helper_vpmsumb(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
{
for (int i = 0; i < 2; ++i) {
uint64_t aa = a->u64[i], bb = b->u64[i];
r->u64[i] = clmul_8x4_even(aa, bb) ^ clmul_8x4_odd(aa, bb);
}
}
#define PMSUM(name, srcfld, trgfld, trgtyp) \ #define PMSUM(name, srcfld, trgfld, trgtyp) \
void helper_##name(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \ void helper_##name(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
{ \ { \
@ -1444,7 +1457,6 @@ void helper_##name(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
} \ } \
} }
PMSUM(vpmsumb, u8, u16, uint16_t)
PMSUM(vpmsumh, u16, u32, uint32_t) PMSUM(vpmsumh, u16, u32, uint32_t)
PMSUM(vpmsumw, u32, u64, uint64_t) PMSUM(vpmsumw, u32, u64, uint64_t)