142 lines
3.6 KiB
C
142 lines
3.6 KiB
C
/*
|
|
* linux/include/asm-arm/xor.h
|
|
*
|
|
* Copyright (C) 2001 Russell King
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#include <asm-generic/xor.h>
|
|
|
|
#define __XOR(a1, a2) a1 ^= a2
|
|
|
|
#define GET_BLOCK_2(dst) \
|
|
__asm__("ldmia %0, {%1, %2}" \
|
|
: "=r" (dst), "=r" (a1), "=r" (a2) \
|
|
: "0" (dst))
|
|
|
|
#define GET_BLOCK_4(dst) \
|
|
__asm__("ldmia %0, {%1, %2, %3, %4}" \
|
|
: "=r" (dst), "=r" (a1), "=r" (a2), "=r" (a3), "=r" (a4) \
|
|
: "0" (dst))
|
|
|
|
#define XOR_BLOCK_2(src) \
|
|
__asm__("ldmia %0!, {%1, %2}" \
|
|
: "=r" (src), "=r" (b1), "=r" (b2) \
|
|
: "0" (src)); \
|
|
__XOR(a1, b1); __XOR(a2, b2);
|
|
|
|
#define XOR_BLOCK_4(src) \
|
|
__asm__("ldmia %0!, {%1, %2, %3, %4}" \
|
|
: "=r" (src), "=r" (b1), "=r" (b2), "=r" (b3), "=r" (b4) \
|
|
: "0" (src)); \
|
|
__XOR(a1, b1); __XOR(a2, b2); __XOR(a3, b3); __XOR(a4, b4)
|
|
|
|
#define PUT_BLOCK_2(dst) \
|
|
__asm__ __volatile__("stmia %0!, {%2, %3}" \
|
|
: "=r" (dst) \
|
|
: "0" (dst), "r" (a1), "r" (a2))
|
|
|
|
#define PUT_BLOCK_4(dst) \
|
|
__asm__ __volatile__("stmia %0!, {%2, %3, %4, %5}" \
|
|
: "=r" (dst) \
|
|
: "0" (dst), "r" (a1), "r" (a2), "r" (a3), "r" (a4))
|
|
|
|
static void
|
|
xor_arm4regs_2(unsigned long bytes, unsigned long *p1, unsigned long *p2)
|
|
{
|
|
unsigned int lines = bytes / sizeof(unsigned long) / 4;
|
|
register unsigned int a1 __asm__("r4");
|
|
register unsigned int a2 __asm__("r5");
|
|
register unsigned int a3 __asm__("r6");
|
|
register unsigned int a4 __asm__("r7");
|
|
register unsigned int b1 __asm__("r8");
|
|
register unsigned int b2 __asm__("r9");
|
|
register unsigned int b3 __asm__("ip");
|
|
register unsigned int b4 __asm__("lr");
|
|
|
|
do {
|
|
GET_BLOCK_4(p1);
|
|
XOR_BLOCK_4(p2);
|
|
PUT_BLOCK_4(p1);
|
|
} while (--lines);
|
|
}
|
|
|
|
static void
|
|
xor_arm4regs_3(unsigned long bytes, unsigned long *p1, unsigned long *p2,
|
|
unsigned long *p3)
|
|
{
|
|
unsigned int lines = bytes / sizeof(unsigned long) / 4;
|
|
register unsigned int a1 __asm__("r4");
|
|
register unsigned int a2 __asm__("r5");
|
|
register unsigned int a3 __asm__("r6");
|
|
register unsigned int a4 __asm__("r7");
|
|
register unsigned int b1 __asm__("r8");
|
|
register unsigned int b2 __asm__("r9");
|
|
register unsigned int b3 __asm__("ip");
|
|
register unsigned int b4 __asm__("lr");
|
|
|
|
do {
|
|
GET_BLOCK_4(p1);
|
|
XOR_BLOCK_4(p2);
|
|
XOR_BLOCK_4(p3);
|
|
PUT_BLOCK_4(p1);
|
|
} while (--lines);
|
|
}
|
|
|
|
static void
|
|
xor_arm4regs_4(unsigned long bytes, unsigned long *p1, unsigned long *p2,
|
|
unsigned long *p3, unsigned long *p4)
|
|
{
|
|
unsigned int lines = bytes / sizeof(unsigned long) / 2;
|
|
register unsigned int a1 __asm__("r8");
|
|
register unsigned int a2 __asm__("r9");
|
|
register unsigned int b1 __asm__("ip");
|
|
register unsigned int b2 __asm__("lr");
|
|
|
|
do {
|
|
GET_BLOCK_2(p1);
|
|
XOR_BLOCK_2(p2);
|
|
XOR_BLOCK_2(p3);
|
|
XOR_BLOCK_2(p4);
|
|
PUT_BLOCK_2(p1);
|
|
} while (--lines);
|
|
}
|
|
|
|
static void
|
|
xor_arm4regs_5(unsigned long bytes, unsigned long *p1, unsigned long *p2,
|
|
unsigned long *p3, unsigned long *p4, unsigned long *p5)
|
|
{
|
|
unsigned int lines = bytes / sizeof(unsigned long) / 2;
|
|
register unsigned int a1 __asm__("r8");
|
|
register unsigned int a2 __asm__("r9");
|
|
register unsigned int b1 __asm__("ip");
|
|
register unsigned int b2 __asm__("lr");
|
|
|
|
do {
|
|
GET_BLOCK_2(p1);
|
|
XOR_BLOCK_2(p2);
|
|
XOR_BLOCK_2(p3);
|
|
XOR_BLOCK_2(p4);
|
|
XOR_BLOCK_2(p5);
|
|
PUT_BLOCK_2(p1);
|
|
} while (--lines);
|
|
}
|
|
|
|
static struct xor_block_template xor_block_arm4regs = {
|
|
.name = "arm4regs",
|
|
.do_2 = xor_arm4regs_2,
|
|
.do_3 = xor_arm4regs_3,
|
|
.do_4 = xor_arm4regs_4,
|
|
.do_5 = xor_arm4regs_5,
|
|
};
|
|
|
|
#undef XOR_TRY_TEMPLATES
|
|
#define XOR_TRY_TEMPLATES \
|
|
do { \
|
|
xor_speed(&xor_block_arm4regs); \
|
|
xor_speed(&xor_block_8regs); \
|
|
xor_speed(&xor_block_32regs); \
|
|
} while (0)
|