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remove ARM and Mozilla SHA1 implementations

They are both slower than the new BLK_SHA1 implementation, so it is
pointless to keep them around.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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1 parent e9c5dcd commit 30ae47b4cc19dce42f51b4fa378d315a71b08957 Nicolas Pitre committed with gitster Aug 18, 2009
Showing with 11 additions and 526 deletions.
  1. +2 −24 Makefile
  2. +0 −82 arm/sha1.c
  3. +0 −23 arm/sha1.h
  4. +0 −183 arm/sha1_arm.S
  5. +4 −2 block-sha1/sha1.c
  6. +4 −2 block-sha1/sha1.h
  7. +1 −9 configure.ac
  8. +0 −151 mozilla-sha1/sha1.c
  9. +0 −50 mozilla-sha1/sha1.h
View
@@ -16,7 +16,7 @@ all::
# when attempting to read from an fopen'ed directory.
#
# Define NO_OPENSSL environment variable if you do not have OpenSSL.
-# This also implies MOZILLA_SHA1.
+# This also implies BLK_SHA1.
#
# Define NO_CURL if you do not have libcurl installed. git-http-pull and
# git-http-push are not built, and you cannot use http:// and https://
@@ -91,14 +91,6 @@ all::
# Define PPC_SHA1 environment variable when running make to make use of
# a bundled SHA1 routine optimized for PowerPC.
#
-# Define ARM_SHA1 environment variable when running make to make use of
-# a bundled SHA1 routine optimized for ARM.
-#
-# Define MOZILLA_SHA1 environment variable when running make to make use of
-# a bundled SHA1 routine coming from Mozilla. It is GPL'd and should be fast
-# on non-x86 architectures (e.g. PowerPC), while the OpenSSL version (default
-# choice) has very fast version optimized for i586.
-#
# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
#
# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin).
@@ -926,10 +918,6 @@ else
NO_PTHREADS = YesPlease
endif
endif
-ifneq (,$(findstring arm,$(uname_M)))
- ARM_SHA1 = YesPlease
- NO_MKSTEMPS = YesPlease
-endif
-include config.mak.autogen
-include config.mak
@@ -1022,7 +1010,7 @@ ifndef NO_OPENSSL
endif
else
BASIC_CFLAGS += -DNO_OPENSSL
- MOZILLA_SHA1 = 1
+ BLK_SHA1 = 1
OPENSSL_LIBSSL =
endif
ifdef NEEDS_SSL_WITH_CRYPTO
@@ -1178,21 +1166,11 @@ else
ifdef PPC_SHA1
SHA1_HEADER = "ppc/sha1.h"
LIB_OBJS += ppc/sha1.o ppc/sha1ppc.o
-else
-ifdef ARM_SHA1
- SHA1_HEADER = "arm/sha1.h"
- LIB_OBJS += arm/sha1.o arm/sha1_arm.o
-else
-ifdef MOZILLA_SHA1
- SHA1_HEADER = "mozilla-sha1/sha1.h"
- LIB_OBJS += mozilla-sha1/sha1.o
else
SHA1_HEADER = <openssl/sha.h>
EXTLIBS += $(LIB_4_CRYPTO)
endif
endif
-endif
-endif
ifdef NO_PERL_MAKEMAKER
export NO_PERL_MAKEMAKER
endif
View
@@ -1,82 +0,0 @@
-/*
- * SHA-1 implementation optimized for ARM
- *
- * Copyright: (C) 2005 by Nicolas Pitre <nico@cam.org>
- * Created: September 17, 2005
- */
-
-#include <string.h>
-#include "sha1.h"
-
-extern void arm_sha_transform(uint32_t *hash, const unsigned char *data, uint32_t *W);
-
-void arm_SHA1_Init(arm_SHA_CTX *c)
-{
- c->len = 0;
- c->hash[0] = 0x67452301;
- c->hash[1] = 0xefcdab89;
- c->hash[2] = 0x98badcfe;
- c->hash[3] = 0x10325476;
- c->hash[4] = 0xc3d2e1f0;
-}
-
-void arm_SHA1_Update(arm_SHA_CTX *c, const void *p, unsigned long n)
-{
- uint32_t workspace[80];
- unsigned int partial;
- unsigned long done;
-
- partial = c->len & 0x3f;
- c->len += n;
- if ((partial + n) >= 64) {
- if (partial) {
- done = 64 - partial;
- memcpy(c->buffer + partial, p, done);
- arm_sha_transform(c->hash, c->buffer, workspace);
- partial = 0;
- } else
- done = 0;
- while (n >= done + 64) {
- arm_sha_transform(c->hash, p + done, workspace);
- done += 64;
- }
- } else
- done = 0;
- if (n - done)
- memcpy(c->buffer + partial, p + done, n - done);
-}
-
-void arm_SHA1_Final(unsigned char *hash, arm_SHA_CTX *c)
-{
- uint64_t bitlen;
- uint32_t bitlen_hi, bitlen_lo;
- unsigned int i, offset, padlen;
- unsigned char bits[8];
- static const unsigned char padding[64] = { 0x80, };
-
- bitlen = c->len << 3;
- offset = c->len & 0x3f;
- padlen = ((offset < 56) ? 56 : (64 + 56)) - offset;
- arm_SHA1_Update(c, padding, padlen);
-
- bitlen_hi = bitlen >> 32;
- bitlen_lo = bitlen & 0xffffffff;
- bits[0] = bitlen_hi >> 24;
- bits[1] = bitlen_hi >> 16;
- bits[2] = bitlen_hi >> 8;
- bits[3] = bitlen_hi;
- bits[4] = bitlen_lo >> 24;
- bits[5] = bitlen_lo >> 16;
- bits[6] = bitlen_lo >> 8;
- bits[7] = bitlen_lo;
- arm_SHA1_Update(c, bits, 8);
-
- for (i = 0; i < 5; i++) {
- uint32_t v = c->hash[i];
- hash[0] = v >> 24;
- hash[1] = v >> 16;
- hash[2] = v >> 8;
- hash[3] = v;
- hash += 4;
- }
-}
View
@@ -1,23 +0,0 @@
-/*
- * SHA-1 implementation optimized for ARM
- *
- * Copyright: (C) 2005 by Nicolas Pitre <nico@cam.org>
- * Created: September 17, 2005
- */
-
-#include <stdint.h>
-
-typedef struct {
- uint64_t len;
- uint32_t hash[5];
- unsigned char buffer[64];
-} arm_SHA_CTX;
-
-void arm_SHA1_Init(arm_SHA_CTX *c);
-void arm_SHA1_Update(arm_SHA_CTX *c, const void *p, unsigned long n);
-void arm_SHA1_Final(unsigned char *hash, arm_SHA_CTX *c);
-
-#define git_SHA_CTX arm_SHA_CTX
-#define git_SHA1_Init arm_SHA1_Init
-#define git_SHA1_Update arm_SHA1_Update
-#define git_SHA1_Final arm_SHA1_Final
View
@@ -1,183 +0,0 @@
-/*
- * SHA transform optimized for ARM
- *
- * Copyright: (C) 2005 by Nicolas Pitre <nico@cam.org>
- * 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.
- */
-
- .text
- .globl arm_sha_transform
-
-/*
- * void sha_transform(uint32_t *hash, const unsigned char *data, uint32_t *W);
- *
- * note: the "data" pointer may be unaligned.
- */
-
-arm_sha_transform:
-
- stmfd sp!, {r4 - r8, lr}
-
- @ for (i = 0; i < 16; i++)
- @ W[i] = ntohl(((uint32_t *)data)[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}
-
-.L_sha_K:
- .word 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xca62c1d6
View
@@ -1,7 +1,9 @@
/*
- * Based on the Mozilla SHA1 (see mozilla-sha1/sha1.c),
- * optimized to do word accesses rather than byte accesses,
+ * SHA1 routine optimized to do word accesses rather than byte accesses,
* and to avoid unnecessary copies into the context array.
+ *
+ * This was initially based on the Mozilla SHA1 implementation, although
+ * none of the original Mozilla code remains.
*/
/* this is only to get definitions for memcpy(), ntohl() and htonl() */
View
@@ -1,7 +1,9 @@
/*
- * Based on the Mozilla SHA1 (see mozilla-sha1/sha1.h),
- * optimized to do word accesses rather than byte accesses,
+ * SHA1 routine optimized to do word accesses rather than byte accesses,
* and to avoid unnecessary copies into the context array.
+ *
+ * This was initially based on the Mozilla SHA1 implementation, although
+ * none of the original Mozilla code remains.
*/
typedef struct {
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