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This is my ARM assembly SHA1 implementation for GIT. It is approximately 50% faster than the generic C version. On an XScale processor running at 400MHz: generic C version: 9.8 MB/s my version: 14.5 MB/s It's not that I expect a lot of big GIT users on ARM, but I stillknow about one important ARM user that might benefit from it, and writing that code was fun. I also reworked the makefile a bit so any optimized SHA1 implementations is used regardless of whether NO_OPENSSL is defined or not. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
18 lines
402 B
C
18 lines
402 B
C
/*
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* SHA-1 implementation optimized for ARM
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*
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* Copyright: (C) 2005 by Nicolas Pitre <nico@cam.org>
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* Created: September 17, 2005
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*/
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#include <stdint.h>
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typedef struct sha_context {
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uint64_t len;
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uint32_t hash[5];
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unsigned char buffer[64];
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} SHA_CTX;
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void SHA1_Init(SHA_CTX *c);
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void SHA1_Update(SHA_CTX *c, const void *p, unsigned long n);
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void SHA1_Final(unsigned char *hash, SHA_CTX *c);
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