/* * include/asm-generic/xor.h * * Generic optimized RAID-5 checksumming functions. * * 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, or (at your option) * any later version. * * You should have received a copy of the GNU General Public License * (for example /usr/src/linux/COPYING); if not, write to the Free * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */static voidxor_8regs_2(unsigned long bytes, unsigned long *p1, unsigned long *p2){	long lines = bytes / (sizeof (long)) / 8;	do {		p1[0] ^= p2[0];		p1[1] ^= p2[1];		p1[2] ^= p2[2];		p1[3] ^= p2[3];		p1[4] ^= p2[4];		p1[5] ^= p2[5];		p1[6] ^= p2[6];		p1[7] ^= p2[7];		p1 += 8;		p2 += 8;	} while (--lines > 0);}static voidxor_8regs_3(unsigned long bytes, unsigned long *p1, unsigned long *p2,	    unsigned long *p3){	long lines = bytes / (sizeof (long)) / 8;	do {		p1[0] ^= p2[0] ^ p3[0];		p1[1] ^= p2[1] ^ p3[1];		p1[2] ^= p2[2] ^ p3[2];		p1[3] ^= p2[3] ^ p3[3];		p1[4] ^= p2[4] ^ p3[4];		p1[5] ^= p2[5] ^ p3[5];		p1[6] ^= p2[6] ^ p3[6];		p1[7] ^= p2[7] ^ p3[7];		p1 += 8;		p2 += 8;		p3 += 8;	} while (--lines > 0);}static voidxor_8regs_4(unsigned long bytes, unsigned long *p1, unsigned long *p2,	    unsigned long *p3, unsigned long *p4){	long lines = bytes / (sizeof (long)) / 8;	do {		p1[0] ^= p2[0] ^ p3[0] ^ p4[0];		p1[1] ^= p2[1] ^ p3[1] ^ p4[1];		p1[2] ^= p2[2] ^ p3[2] ^ p4[2];		p1[3] ^= p2[3] ^ p3[3] ^ p4[3];		p1[4] ^= p2[4] ^ p3[4] ^ p4[4];		p1[5] ^= p2[5] ^ p3[5] ^ p4[5];		p1[6] ^= p2[6] ^ p3[6] ^ p4[6];		p1[7] ^= p2[7] ^ p3[7] ^ p4[7];		p1 += 8;		p2 += 8;		p3 += 8;		p4 += 8;	} while (--lines > 0);}static voidxor_8regs_5(unsigned long bytes, unsigned long *p1, unsigned long *p2,	    unsigned long *p3, unsigned long *p4, unsigned long *p5){	long lines = bytes / (sizeof (long)) / 8;	do {		p1[0] ^= p2[0] ^ p3[0] ^ p4[0] ^ p5[0];		p1[1] ^= p2[1] ^ p3[1] ^ p4[1] ^ p5[1];		p1[2] ^= p2[2] ^ p3[2] ^ p4[2] ^ p5[2];		p1[3] ^= p2[3] ^ p3[3] ^ p4[3] ^ p5[3];		p1[4] ^= p2[4] ^ p3[4] ^ p4[4] ^ p5[4];		p1[5] ^= p2[5] ^ p3[5] ^ p4[5] ^ p5[5];		p1[6] ^= p2[6] ^ p3[6] ^ p4[6] ^ p5[6];		p1[7] ^= p2[7] ^ p3[7] ^ p4[7] ^ p5[7];		p1 += 8;		p2 += 8;		p3 += 8;		p4 += 8;		p5 += 8;	} while (--lines > 0);}static voidxor_32regs_2(unsigned long bytes, unsigned long *p1, unsigned long *p2){	long lines = bytes / (sizeof (long)) / 8;	do {		register long d0, d1, d2, d3, d4, d5, d6, d7;		d0 = p1[0];	/* Pull the stuff into registers	*/		d1 = p1[1];	/*  ... in bursts, if possible.		*/		d2 = p1[2];		d3 = p1[3];		d4 = p1[4];		d5 = p1[5];		d6 = p1[6];		d7 = p1[7];		d0 ^= p2[0];		d1 ^= p2[1];		d2 ^= p2[2];		d3 ^= p2[3];		d4 ^= p2[4];		d5 ^= p2[5];		d6 ^= p2[6];		d7 ^= p2[7];		p1[0] = d0;	/* Store the result (in burts)		*/		p1[1] = d1;		p1[2] = d2;		p1[3] = d3;		p1[4] = d4;		p1[5] = d5;		p1[6] = d6;		p1[7] = d7;		p1 += 8;		p2 += 8;	} while (--lines > 0);}static voidxor_32regs_3(unsigned long bytes, unsigned long *p1, unsigned long *p2,	    unsigned long *p3){	long lines = bytes / (sizeof (long)) / 8;	do {		register long d0, d1, d2, d3, d4, d5, d6, d7;		d0 = p1[0];	/* Pull the stuff into registers	*/		d1 = p1[1];	/*  ... in bursts, if possible.		*/		d2 = p1[2];		d3 = p1[3];		d4 = p1[4];		d5 = p1[5];		d6 = p1[6];		d7 = p1[7];		d0 ^= p2[0];		d1 ^= p2[1];		d2 ^= p2[2];		d3 ^= p2[3];		d4 ^= p2[4];		d5 ^= p2[5];		d6 ^= p2[6];		d7 ^= p2[7];		d0 ^= p3[0];		d1 ^= p3[1];		d2 ^= p3[2];		d3 ^= p3[3];		d4 ^= p3[4];		d5 ^= p3[5];		d6 ^= p3[6];		d7 ^= p3[7];		p1[0] = d0;	/* Store the result (in burts)		*/		p1[1] = d1;		p1[2] = d2;		p1[3] = d3;		p1[4] = d4;		p1[5] = d5;		p1[6] = d6;		p1[7] = d7;		p1 += 8;		p2 += 8;		p3 += 8;	} while (--lines > 0);}static voidxor_32regs_4(unsigned long bytes, unsigned long *p1, unsigned long *p2,	    unsigned long *p3, unsigned long *p4){	long lines = bytes / (sizeof (long)) / 8;	do {		register long d0, d1, d2, d3, d4, d5, d6, d7;		d0 = p1[0];	/* Pull the stuff into registers	*/		d1 = p1[1];	/*  ... in bursts, if possible.		*/		d2 = p1[2];		d3 = p1[3];		d4 = p1[4];		d5 = p1[5];		d6 = p1[6];		d7 = p1[7];		d0 ^= p2[0];		d1 ^= p2[1];		d2 ^= p2[2];		d3 ^= p2[3];		d4 ^= p2[4];		d5 ^= p2[5];		d6 ^= p2[6];		d7 ^= p2[7];		d0 ^= p3[0];		d1 ^= p3[1];		d2 ^= p3[2];		d3 ^= p3[3];		d4 ^= p3[4];		d5 ^= p3[5];		d6 ^= p3[6];		d7 ^= p3[7];		d0 ^= p4[0];		d1 ^= p4[1];		d2 ^= p4[2];		d3 ^= p4[3];		d4 ^= p4[4];		d5 ^= p4[5];		d6 ^= p4[6];		d7 ^= p4[7];		p1[0] = d0;	/* Store the result (in burts)		*/		p1[1] = d1;		p1[2] = d2;		p1[3] = d3;		p1[4] = d4;		p1[5] = d5;		p1[6] = d6;		p1[7] = d7;		p1 += 8;		p2 += 8;		p3 += 8;		p4 += 8;	} while (--lines > 0);}static voidxor_32regs_5(unsigned long bytes, unsigned long *p1, unsigned long *p2,	    unsigned long *p3, unsigned long *p4, unsigned long *p5){	long lines = bytes / (sizeof (long)) / 8;	do {		register long d0, d1, d2, d3, d4, d5, d6, d7;		d0 = p1[0];	/* Pull the stuff into registers	*/		d1 = p1[1];	/*  ... in bursts, if possible.		*/		d2 = p1[2];		d3 = p1[3];		d4 = p1[4];		d5 = p1[5];		d6 = p1[6];		d7 = p1[7];		d0 ^= p2[0];		d1 ^= p2[1];		d2 ^= p2[2];		d3 ^= p2[3];		d4 ^= p2[4];		d5 ^= p2[5];		d6 ^= p2[6];		d7 ^= p2[7];		d0 ^= p3[0];		d1 ^= p3[1];		d2 ^= p3[2];		d3 ^= p3[3];		d4 ^= p3[4];		d5 ^= p3[5];		d6 ^= p3[6];		d7 ^= p3[7];		d0 ^= p4[0];		d1 ^= p4[1];		d2 ^= p4[2];		d3 ^= p4[3];		d4 ^= p4[4];		d5 ^= p4[5];		d6 ^= p4[6];		d7 ^= p4[7];		d0 ^= p5[0];		d1 ^= p5[1];		d2 ^= p5[2];		d3 ^= p5[3];		d4 ^= p5[4];		d5 ^= p5[5];		d6 ^= p5[6];		d7 ^= p5[7];		p1[0] = d0;	/* Store the result (in burts)		*/		p1[1] = d1;		p1[2] = d2;		p1[3] = d3;		p1[4] = d4;		p1[5] = d5;		p1[6] = d6;		p1[7] = d7;		p1 += 8;		p2 += 8;		p3 += 8;		p4 += 8;		p5 += 8;	} while (--lines > 0);}static struct xor_block_template xor_block_8regs = {	name: "8regs",	do_2: xor_8regs_2,	do_3: xor_8regs_3,	do_4: xor_8regs_4,	do_5: xor_8regs_5,};static struct xor_block_template xor_block_32regs = {	name: "32regs",	do_2: xor_32regs_2,	do_3: xor_32regs_3,	do_4: xor_32regs_4,	do_5: xor_32regs_5,};#define XOR_TRY_TEMPLATES			\	do {					\		xor_speed(&xor_block_8regs);	\		xor_speed(&xor_block_32regs);	\	} while (0)