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// SPDX-License-Identifier: GPL-2.0-only
#include <linux/cache.h>
#include <asm/neon-intrinsics.h>
#include "xor_impl.h"
#include "xor_arch.h"
#include "xor-neon.h"
extern void __xor_eor3_2(unsigned long bytes, unsigned long * __restrict p1,
const unsigned long * __restrict p2);
static inline uint64x2_t eor3(uint64x2_t p, uint64x2_t q, uint64x2_t r)
{
uint64x2_t res;
asm(ARM64_ASM_PREAMBLE ".arch_extension sha3\n"
"eor3 %0.16b, %1.16b, %2.16b, %3.16b"
: "=w"(res) : "w"(p), "w"(q), "w"(r));
return res;
}
static void __xor_eor3_3(unsigned long bytes, unsigned long * __restrict p1,
const unsigned long * __restrict p2,
const unsigned long * __restrict p3)
{
uint64_t *dp1 = (uint64_t *)p1;
uint64_t *dp2 = (uint64_t *)p2;
uint64_t *dp3 = (uint64_t *)p3;
register uint64x2_t v0, v1, v2, v3;
long lines = bytes / (sizeof(uint64x2_t) * 4);
do {
/* p1 ^= p2 ^ p3 */
v0 = eor3(vld1q_u64(dp1 + 0), vld1q_u64(dp2 + 0),
vld1q_u64(dp3 + 0));
v1 = eor3(vld1q_u64(dp1 + 2), vld1q_u64(dp2 + 2),
vld1q_u64(dp3 + 2));
v2 = eor3(vld1q_u64(dp1 + 4), vld1q_u64(dp2 + 4),
vld1q_u64(dp3 + 4));
v3 = eor3(vld1q_u64(dp1 + 6), vld1q_u64(dp2 + 6),
vld1q_u64(dp3 + 6));
/* store */
vst1q_u64(dp1 + 0, v0);
vst1q_u64(dp1 + 2, v1);
vst1q_u64(dp1 + 4, v2);
vst1q_u64(dp1 + 6, v3);
dp1 += 8;
dp2 += 8;
dp3 += 8;
} while (--lines > 0);
}
static void __xor_eor3_4(unsigned long bytes, unsigned long * __restrict p1,
const unsigned long * __restrict p2,
const unsigned long * __restrict p3,
const unsigned long * __restrict p4)
{
uint64_t *dp1 = (uint64_t *)p1;
uint64_t *dp2 = (uint64_t *)p2;
uint64_t *dp3 = (uint64_t *)p3;
uint64_t *dp4 = (uint64_t *)p4;
register uint64x2_t v0, v1, v2, v3;
long lines = bytes / (sizeof(uint64x2_t) * 4);
do {
/* p1 ^= p2 ^ p3 */
v0 = eor3(vld1q_u64(dp1 + 0), vld1q_u64(dp2 + 0),
vld1q_u64(dp3 + 0));
v1 = eor3(vld1q_u64(dp1 + 2), vld1q_u64(dp2 + 2),
vld1q_u64(dp3 + 2));
v2 = eor3(vld1q_u64(dp1 + 4), vld1q_u64(dp2 + 4),
vld1q_u64(dp3 + 4));
v3 = eor3(vld1q_u64(dp1 + 6), vld1q_u64(dp2 + 6),
vld1q_u64(dp3 + 6));
/* p1 ^= p4 */
v0 = veorq_u64(v0, vld1q_u64(dp4 + 0));
v1 = veorq_u64(v1, vld1q_u64(dp4 + 2));
v2 = veorq_u64(v2, vld1q_u64(dp4 + 4));
v3 = veorq_u64(v3, vld1q_u64(dp4 + 6));
/* store */
vst1q_u64(dp1 + 0, v0);
vst1q_u64(dp1 + 2, v1);
vst1q_u64(dp1 + 4, v2);
vst1q_u64(dp1 + 6, v3);
dp1 += 8;
dp2 += 8;
dp3 += 8;
dp4 += 8;
} while (--lines > 0);
}
static void __xor_eor3_5(unsigned long bytes, unsigned long * __restrict p1,
const unsigned long * __restrict p2,
const unsigned long * __restrict p3,
const unsigned long * __restrict p4,
const unsigned long * __restrict p5)
{
uint64_t *dp1 = (uint64_t *)p1;
uint64_t *dp2 = (uint64_t *)p2;
uint64_t *dp3 = (uint64_t *)p3;
uint64_t *dp4 = (uint64_t *)p4;
uint64_t *dp5 = (uint64_t *)p5;
register uint64x2_t v0, v1, v2, v3;
long lines = bytes / (sizeof(uint64x2_t) * 4);
do {
/* p1 ^= p2 ^ p3 */
v0 = eor3(vld1q_u64(dp1 + 0), vld1q_u64(dp2 + 0),
vld1q_u64(dp3 + 0));
v1 = eor3(vld1q_u64(dp1 + 2), vld1q_u64(dp2 + 2),
vld1q_u64(dp3 + 2));
v2 = eor3(vld1q_u64(dp1 + 4), vld1q_u64(dp2 + 4),
vld1q_u64(dp3 + 4));
v3 = eor3(vld1q_u64(dp1 + 6), vld1q_u64(dp2 + 6),
vld1q_u64(dp3 + 6));
/* p1 ^= p4 ^ p5 */
v0 = eor3(v0, vld1q_u64(dp4 + 0), vld1q_u64(dp5 + 0));
v1 = eor3(v1, vld1q_u64(dp4 + 2), vld1q_u64(dp5 + 2));
v2 = eor3(v2, vld1q_u64(dp4 + 4), vld1q_u64(dp5 + 4));
v3 = eor3(v3, vld1q_u64(dp4 + 6), vld1q_u64(dp5 + 6));
/* store */
vst1q_u64(dp1 + 0, v0);
vst1q_u64(dp1 + 2, v1);
vst1q_u64(dp1 + 4, v2);
vst1q_u64(dp1 + 6, v3);
dp1 += 8;
dp2 += 8;
dp3 += 8;
dp4 += 8;
dp5 += 8;
} while (--lines > 0);
}
__DO_XOR_BLOCKS(eor3_inner, __xor_eor3_2, __xor_eor3_3, __xor_eor3_4,
__xor_eor3_5);
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