arm: remove "optimized" SHA1 routines
authorLinus Torvalds <torvalds@linux-foundation.org>
Sun, 7 Aug 2011 21:07:03 +0000 (14:07 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sun, 7 Aug 2011 21:07:03 +0000 (14:07 -0700)
commit4d4487140d34c1b9b321889d2d209321b0da6643
tree1f1fa8d67a9f36980e457b77234d89f6761098c9
parent3295514841c2112d94451ba5deaf54f5afb78ea9
arm: remove "optimized" SHA1 routines

Since commit 1eb19a12bd22 ("lib/sha1: use the git implementation of
SHA-1"), the ARM SHA1 routines no longer work.  The reason? They
depended on the larger 320-byte workspace, and now the sha1 workspace is
just 16 words (64 bytes).  So the assembly version would overwrite the
stack randomly.

The optimized asm version is also probably slower than the new improved
C version, so there's no reason to keep it around.  At least that was
the case in git, where what appears to be the same assembly language
version was removed two years ago because the optimized C BLK_SHA1 code
was faster.

Reported-and-tested-by: Joachim Eastwood <manabian@gmail.com>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Cc: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/arm/lib/Makefile
arch/arm/lib/sha1.S [deleted file]