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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | /* * 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) |