On Fri, Jun 08, 2007 at 05:42:42PM -0400, Benjamin Gilbert wrote:
> The following 3-part series adds assembly implementations of the SHA-1
> transform for x86 and x86_64. For x86_64 the optimized code is always
> selected; on x86 it is selected if the kernel is compiled for i486 or above
> (since
Add optimized implementation of the SHA-1 hash function for x86_64, ported
from the x86 implementation in Nettle (which is LGPLed).
The code has been tested with tcrypt and the NIST test vectors.
Signed-off-by: Benjamin Gilbert <[EMAIL PROTECTED]>
---
arch/x86_64/kernel/x8664_ksyms.c |3
a
Add x86-optimized implementation of the SHA-1 hash function, taken from
Nettle under the LGPL. This code will be enabled on kernels compiled for
486es or better; kernels which support 386es will use the generic
implementation (since we need BSWAP).
We disable building lib/sha1.o when an optimized
Benjamin Gilbert wrote:
Jan Engelhardt wrote:
UTF-8 please. Hint: it should most likely be an รถ.
Whoops, I had thought I had gotten that right. I'll get updates for
parts 2 and 3 sent out on Monday.
I'm sending the corrected parts 2 and 3 as replies to this email. The
UTF-8 fix is the *o
Andi Kleen wrote:
Benjamin Gilbert <[EMAIL PROTECTED]> writes:
+#define EXPAND(i) \
+ movlOFFSET(i % 16)(DATA), TMP; \
+ xorlOFFSET((i + 2) % 16)(DATA), TMP;\
Such overlapping memory accesses
Matt Mackall wrote:
In 2003, I was getting 17MB/s out of my Athlon. Now I'm getting 2.7MB/s.
Were your tests with or without the latest /dev/urandom fixes? This
one in particular:
http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.21.y.git;a=commitdiff;h=374f167dfb97c1785515a0c41e32a66b4
Matt Mackall <[EMAIL PROTECTED]> writes:
>
> Have you benchmarked this against lib/sha1.c? Please post the results.
> Until then, I'm frankly skeptical that your unrolled version is faster
> because when I introduced lib/sha1.c the rolled version therein won by
> a significant margin and had 1/10t
Benjamin Gilbert <[EMAIL PROTECTED]> writes:
> +/* push/pop wrappers that update the DWARF unwind table */
> +#define PUSH(regname)\
> + push%regname; \
> + CFI_ADJUST_CFA_OFFSET 8;
