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Diffstat (limited to 'arch/arm/lib/sha1.S')
| -rw-r--r-- | arch/arm/lib/sha1.S | 211 |
1 files changed, 0 insertions, 211 deletions
diff --git a/arch/arm/lib/sha1.S b/arch/arm/lib/sha1.S deleted file mode 100644 index eb0edb80d7b8..000000000000 --- a/arch/arm/lib/sha1.S +++ /dev/null @@ -1,211 +0,0 @@ -/* - * linux/arch/arm/lib/sha1.S - * - * SHA transform optimized for ARM - * - * Copyright: (C) 2005 by Nicolas Pitre <nico@fluxnic.net> - * Created: September 17, 2005 - * - * 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. - * - * The reference implementation for this code is linux/lib/sha1.c - */ - -#include <linux/linkage.h> - - .text - - -/* - * void sha_transform(__u32 *digest, const char *in, __u32 *W) - * - * Note: the "in" ptr may be unaligned. - */ - -ENTRY(sha_transform) - - stmfd sp!, {r4 - r8, lr} - - @ for (i = 0; i < 16; i++) - @ W[i] = be32_to_cpu(in[i]); - -#ifdef __ARMEB__ - mov r4, r0 - mov r0, r2 - mov r2, #64 - bl memcpy - mov r2, r0 - mov r0, r4 -#else - mov r3, r2 - mov lr, #16 -1: ldrb r4, [r1], #1 - ldrb r5, [r1], #1 - ldrb r6, [r1], #1 - ldrb r7, [r1], #1 - subs lr, lr, #1 - orr r5, r5, r4, lsl #8 - orr r6, r6, r5, lsl #8 - orr r7, r7, r6, lsl #8 - str r7, [r3], #4 - bne 1b -#endif - - @ for (i = 0; i < 64; i++) - @ W[i+16] = ror(W[i+13] ^ W[i+8] ^ W[i+2] ^ W[i], 31); - - sub r3, r2, #4 - mov lr, #64 -2: ldr r4, [r3, #4]! - subs lr, lr, #1 - ldr r5, [r3, #8] - ldr r6, [r3, #32] - ldr r7, [r3, #52] - eor r4, r4, r5 - eor r4, r4, r6 - eor r4, r4, r7 - mov r4, r4, ror #31 - str r4, [r3, #64] - bne 2b - - /* - * The SHA functions are: - * - * f1(B,C,D) = (D ^ (B & (C ^ D))) - * f2(B,C,D) = (B ^ C ^ D) - * f3(B,C,D) = ((B & C) | (D & (B | C))) - * - * Then the sub-blocks are processed as follows: - * - * A' = ror(A, 27) + f(B,C,D) + E + K + *W++ - * B' = A - * C' = ror(B, 2) - * D' = C - * E' = D - * - * We therefore unroll each loop 5 times to avoid register shuffling. - * Also the ror for C (and also D and E which are successivelyderived - * from it) is applied in place to cut on an additional mov insn for - * each round. - */ - - .macro sha_f1, A, B, C, D, E - ldr r3, [r2], #4 - eor ip, \C, \D - add \E, r1, \E, ror #2 - and ip, \B, ip, ror #2 - add \E, \E, \A, ror #27 - eor ip, ip, \D, ror #2 - add \E, \E, r3 - add \E, \E, ip - .endm - - .macro sha_f2, A, B, C, D, E - ldr r3, [r2], #4 - add \E, r1, \E, ror #2 - eor ip, \B, \C, ror #2 - add \E, \E, \A, ror #27 - eor ip, ip, \D, ror #2 - add \E, \E, r3 - add \E, \E, ip - .endm - - .macro sha_f3, A, B, C, D, E - ldr r3, [r2], #4 - add \E, r1, \E, ror #2 - orr ip, \B, \C, ror #2 - add \E, \E, \A, ror #27 - and ip, ip, \D, ror #2 - add \E, \E, r3 - and r3, \B, \C, ror #2 - orr ip, ip, r3 - add \E, \E, ip - .endm - - ldmia r0, {r4 - r8} - - mov lr, #4 - ldr r1, .L_sha_K + 0 - - /* adjust initial values */ - mov r6, r6, ror #30 - mov r7, r7, ror #30 - mov r8, r8, ror #30 - -3: subs lr, lr, #1 - sha_f1 r4, r5, r6, r7, r8 - sha_f1 r8, r4, r5, r6, r7 - sha_f1 r7, r8, r4, r5, r6 - sha_f1 r6, r7, r8, r4, r5 - sha_f1 r5, r6, r7, r8, r4 - bne 3b - - ldr r1, .L_sha_K + 4 - mov lr, #4 - -4: subs lr, lr, #1 - sha_f2 r4, r5, r6, r7, r8 - sha_f2 r8, r4, r5, r6, r7 - sha_f2 r7, r8, r4, r5, r6 - sha_f2 r6, r7, r8, r4, r5 - sha_f2 r5, r6, r7, r8, r4 - bne 4b - - ldr r1, .L_sha_K + 8 - mov lr, #4 - -5: subs lr, lr, #1 - sha_f3 r4, r5, r6, r7, r8 - sha_f3 r8, r4, r5, r6, r7 - sha_f3 r7, r8, r4, r5, r6 - sha_f3 r6, r7, r8, r4, r5 - sha_f3 r5, r6, r7, r8, r4 - bne 5b - - ldr r1, .L_sha_K + 12 - mov lr, #4 - -6: subs lr, lr, #1 - sha_f2 r4, r5, r6, r7, r8 - sha_f2 r8, r4, r5, r6, r7 - sha_f2 r7, r8, r4, r5, r6 - sha_f2 r6, r7, r8, r4, r5 - sha_f2 r5, r6, r7, r8, r4 - bne 6b - - ldmia r0, {r1, r2, r3, ip, lr} - add r4, r1, r4 - add r5, r2, r5 - add r6, r3, r6, ror #2 - add r7, ip, r7, ror #2 - add r8, lr, r8, ror #2 - stmia r0, {r4 - r8} - - ldmfd sp!, {r4 - r8, pc} - -ENDPROC(sha_transform) - - .align 2 -.L_sha_K: - .word 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xca62c1d6 - - -/* - * void sha_init(__u32 *buf) - */ - - .align 2 -.L_sha_initial_digest: - .word 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0 - -ENTRY(sha_init) - - str lr, [sp, #-4]! - adr r1, .L_sha_initial_digest - ldmia r1, {r1, r2, r3, ip, lr} - stmia r0, {r1, r2, r3, ip, lr} - ldr pc, [sp], #4 - -ENDPROC(sha_init) |