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// SPDX-License-Identifier: GPL-2.0-or-later
/*
*
* Copyright (C) IBM Corporation, 2012
*
* Author: Anton Blanchard <anton@au.ibm.com>
*/
/*
* Sparse (as at v0.5.0) gets very, very confused by this file.
* Make it a bit simpler for it.
*/
#if !defined(__CHECKER__)
#include <altivec.h>
#else
#define vec_xor(a, b) a ^ b
#define vector __attribute__((vector_size(16)))
#endif
#include "xor_vmx.h"
typedef vector signed char unative_t;
#define DEFINE(V) \
unative_t *V = (unative_t *)V##_in; \
unative_t V##_0, V##_1, V##_2, V##_3
#define LOAD(V) \
do { \
V##_0 = V[0]; \
V##_1 = V[1]; \
V##_2 = V[2]; \
V##_3 = V[3]; \
} while (0)
#define STORE(V) \
do { \
V[0] = V##_0; \
V[1] = V##_1; \
V[2] = V##_2; \
V[3] = V##_3; \
} while (0)
#define XOR(V1, V2) \
do { \
V1##_0 = vec_xor(V1##_0, V2##_0); \
V1##_1 = vec_xor(V1##_1, V2##_1); \
V1##_2 = vec_xor(V1##_2, V2##_2); \
V1##_3 = vec_xor(V1##_3, V2##_3); \
} while (0)
void __xor_altivec_2(unsigned long bytes, unsigned long *v1_in,
unsigned long *v2_in)
{
DEFINE(v1);
DEFINE(v2);
unsigned long lines = bytes / (sizeof(unative_t)) / 4;
do {
LOAD(v1);
LOAD(v2);
XOR(v1, v2);
STORE(v1);
v1 += 4;
v2 += 4;
} while (--lines > 0);
}
void __xor_altivec_3(unsigned long bytes, unsigned long *v1_in,
unsigned long *v2_in, unsigned long *v3_in)
{
DEFINE(v1);
DEFINE(v2);
DEFINE(v3);
unsigned long lines = bytes / (sizeof(unative_t)) / 4;
do {
LOAD(v1);
LOAD(v2);
LOAD(v3);
XOR(v1, v2);
XOR(v1, v3);
STORE(v1);
v1 += 4;
v2 += 4;
v3 += 4;
} while (--lines > 0);
}
void __xor_altivec_4(unsigned long bytes, unsigned long *v1_in,
unsigned long *v2_in, unsigned long *v3_in,
unsigned long *v4_in)
{
DEFINE(v1);
DEFINE(v2);
DEFINE(v3);
DEFINE(v4);
unsigned long lines = bytes / (sizeof(unative_t)) / 4;
do {
LOAD(v1);
LOAD(v2);
LOAD(v3);
LOAD(v4);
XOR(v1, v2);
XOR(v3, v4);
XOR(v1, v3);
STORE(v1);
v1 += 4;
v2 += 4;
v3 += 4;
v4 += 4;
} while (--lines > 0);
}
void __xor_altivec_5(unsigned long bytes, unsigned long *v1_in,
unsigned long *v2_in, unsigned long *v3_in,
unsigned long *v4_in, unsigned long *v5_in)
{
DEFINE(v1);
DEFINE(v2);
DEFINE(v3);
DEFINE(v4);
DEFINE(v5);
unsigned long lines = bytes / (sizeof(unative_t)) / 4;
do {
LOAD(v1);
LOAD(v2);
LOAD(v3);
LOAD(v4);
LOAD(v5);
XOR(v1, v2);
XOR(v3, v4);
XOR(v1, v5);
XOR(v1, v3);
STORE(v1);
v1 += 4;
v2 += 4;
v3 += 4;
v4 += 4;
v5 += 4;
} while (--lines > 0);
}
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