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* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Copyright (C) IBM Corporation, 2012
*
* Author: Anton Blanchard <anton@au.ibm.com>
*/
#include <altivec.h>
#include <linux/preempt.h>
#include <linux/export.h>
#include <linux/sched.h>
#include <asm/switch_to.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;
preempt_disable();
enable_kernel_altivec();
do {
LOAD(v1);
LOAD(v2);
XOR(v1, v2);
STORE(v1);
v1 += 4;
v2 += 4;
} while (--lines > 0);
preempt_enable();
}
EXPORT_SYMBOL(xor_altivec_2);
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;
preempt_disable();
enable_kernel_altivec();
do {
LOAD(v1);
LOAD(v2);
LOAD(v3);
XOR(v1, v2);
XOR(v1, v3);
STORE(v1);
v1 += 4;
v2 += 4;
v3 += 4;
} while (--lines > 0);
preempt_enable();
}
EXPORT_SYMBOL(xor_altivec_3);
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;
preempt_disable();
enable_kernel_altivec();
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);
preempt_enable();
}
EXPORT_SYMBOL(xor_altivec_4);
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;
preempt_disable();
enable_kernel_altivec();
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);
preempt_enable();
}
EXPORT_SYMBOL(xor_altivec_5);
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