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remove ARM and Mozilla SHA1 implementations

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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>
This commit is contained in:
Nicolas Pitre 2009-08-17 20:09:56 -04:00 committed by Junio C Hamano
parent e9c5dcd131
commit 30ae47b4cc
9 changed files with 11 additions and 526 deletions
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26
Makefile
View File

@ -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

82
arm/sha1.c
View File

@ -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;
}
}

23
arm/sha1.h
View File

@ -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

183
arm/sha1_arm.S
View File

@ -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

6
block-sha1/sha1.c
View File

@ -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() */

6
block-sha1/sha1.h
View File

@ -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 {

10
configure.ac
View File

@ -156,19 +156,11 @@ AC_MSG_NOTICE([CHECKS for site configuration])
# tests. These tests take up a significant amount of the total test time
# but are not needed unless you plan to talk to SVN repos.
#
# 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 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 NO_OPENSSL environment variable if you do not have OpenSSL.
# This also implies MOZILLA_SHA1.
# This also implies BLK_SHA1.
#
# Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
# /foo/bar/include and /foo/bar/lib directories.

151
mozilla-sha1/sha1.c
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@ -1,151 +0,0 @@
/*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is SHA 180-1 Reference Implementation (Compact version)
*
* The Initial Developer of the Original Code is Paul Kocher of
* Cryptography Research. Portions created by Paul Kocher are
* Copyright (C) 1995-9 by Cryptography Research, Inc. All
* Rights Reserved.
*
* Contributor(s):
*
* Paul Kocher
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU General Public License Version 2 or later (the
* "GPL"), in which case the provisions of the GPL are applicable
* instead of those above. If you wish to allow use of your
* version of this file only under the terms of the GPL and not to
* allow others to use your version of this file under the MPL,
* indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by
* the GPL. If you do not delete the provisions above, a recipient
* may use your version of this file under either the MPL or the
* GPL.
*/
#include "sha1.h"
static void shaHashBlock(moz_SHA_CTX *ctx);
void moz_SHA1_Init(moz_SHA_CTX *ctx) {
int i;
ctx->lenW = 0;
ctx->sizeHi = ctx->sizeLo = 0;
/* Initialize H with the magic constants (see FIPS180 for constants)
*/
ctx->H[0] = 0x67452301;
ctx->H[1] = 0xefcdab89;
ctx->H[2] = 0x98badcfe;
ctx->H[3] = 0x10325476;
ctx->H[4] = 0xc3d2e1f0;
for (i = 0; i < 80; i++)
ctx->W[i] = 0;
}
void moz_SHA1_Update(moz_SHA_CTX *ctx, const void *_dataIn, int len) {
const unsigned char *dataIn = _dataIn;
int i;
/* Read the data into W and process blocks as they get full
*/
for (i = 0; i < len; i++) {
ctx->W[ctx->lenW / 4] <<= 8;
ctx->W[ctx->lenW / 4] |= (unsigned int)dataIn[i];
if ((++ctx->lenW) % 64 == 0) {
shaHashBlock(ctx);
ctx->lenW = 0;
}
ctx->sizeLo += 8;
ctx->sizeHi += (ctx->sizeLo < 8);
}
}
void moz_SHA1_Final(unsigned char hashout[20], moz_SHA_CTX *ctx) {
unsigned char pad0x80 = 0x80;
unsigned char pad0x00 = 0x00;
unsigned char padlen[8];
int i;
/* Pad with a binary 1 (e.g. 0x80), then zeroes, then length
*/
padlen[0] = (unsigned char)((ctx->sizeHi >> 24) & 255);
padlen[1] = (unsigned char)((ctx->sizeHi >> 16) & 255);
padlen[2] = (unsigned char)((ctx->sizeHi >> 8) & 255);
padlen[3] = (unsigned char)((ctx->sizeHi >> 0) & 255);
padlen[4] = (unsigned char)((ctx->sizeLo >> 24) & 255);
padlen[5] = (unsigned char)((ctx->sizeLo >> 16) & 255);
padlen[6] = (unsigned char)((ctx->sizeLo >> 8) & 255);
padlen[7] = (unsigned char)((ctx->sizeLo >> 0) & 255);
moz_SHA1_Update(ctx, &pad0x80, 1);
while (ctx->lenW != 56)
moz_SHA1_Update(ctx, &pad0x00, 1);
moz_SHA1_Update(ctx, padlen, 8);
/* Output hash
*/
for (i = 0; i < 20; i++) {
hashout[i] = (unsigned char)(ctx->H[i / 4] >> 24);
ctx->H[i / 4] <<= 8;
}
/*
* Re-initialize the context (also zeroizes contents)
*/
moz_SHA1_Init(ctx);
}
#define SHA_ROT(X,n) (((X) << (n)) | ((X) >> (32-(n))))
static void shaHashBlock(moz_SHA_CTX *ctx) {
int t;
unsigned int A,B,C,D,E,TEMP;
for (t = 16; t <= 79; t++)
ctx->W[t] =
SHA_ROT(ctx->W[t-3] ^ ctx->W[t-8] ^ ctx->W[t-14] ^ ctx->W[t-16], 1);
A = ctx->H[0];
B = ctx->H[1];
C = ctx->H[2];
D = ctx->H[3];
E = ctx->H[4];
for (t = 0; t <= 19; t++) {
TEMP = SHA_ROT(A,5) + (((C^D)&B)^D) + E + ctx->W[t] + 0x5a827999;
E = D; D = C; C = SHA_ROT(B, 30); B = A; A = TEMP;
}
for (t = 20; t <= 39; t++) {
TEMP = SHA_ROT(A,5) + (B^C^D) + E + ctx->W[t] + 0x6ed9eba1;
E = D; D = C; C = SHA_ROT(B, 30); B = A; A = TEMP;
}
for (t = 40; t <= 59; t++) {
TEMP = SHA_ROT(A,5) + ((B&C)|(D&(B|C))) + E + ctx->W[t] + 0x8f1bbcdc;
E = D; D = C; C = SHA_ROT(B, 30); B = A; A = TEMP;
}
for (t = 60; t <= 79; t++) {
TEMP = SHA_ROT(A,5) + (B^C^D) + E + ctx->W[t] + 0xca62c1d6;
E = D; D = C; C = SHA_ROT(B, 30); B = A; A = TEMP;
}
ctx->H[0] += A;
ctx->H[1] += B;
ctx->H[2] += C;
ctx->H[3] += D;
ctx->H[4] += E;
}

50
mozilla-sha1/sha1.h
View File

@ -1,50 +0,0 @@
/*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is SHA 180-1 Header File
*
* The Initial Developer of the Original Code is Paul Kocher of
* Cryptography Research. Portions created by Paul Kocher are
* Copyright (C) 1995-9 by Cryptography Research, Inc. All
* Rights Reserved.
*
* Contributor(s):
*
* Paul Kocher
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU General Public License Version 2 or later (the
* "GPL"), in which case the provisions of the GPL are applicable
* instead of those above. If you wish to allow use of your
* version of this file only under the terms of the GPL and not to
* allow others to use your version of this file under the MPL,
* indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by
* the GPL. If you do not delete the provisions above, a recipient
* may use your version of this file under either the MPL or the
* GPL.
*/
typedef struct {
unsigned int H[5];
unsigned int W[80];
int lenW;
unsigned int sizeHi,sizeLo;
} moz_SHA_CTX;
void moz_SHA1_Init(moz_SHA_CTX *ctx);
void moz_SHA1_Update(moz_SHA_CTX *ctx, const void *dataIn, int len);
void moz_SHA1_Final(unsigned char hashout[20], moz_SHA_CTX *ctx);
#define git_SHA_CTX moz_SHA_CTX
#define git_SHA1_Init moz_SHA1_Init
#define git_SHA1_Update moz_SHA1_Update
#define git_SHA1_Final moz_SHA1_Final