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Commit 5cdcc22f authored by Herbert Xu's avatar Herbert Xu
Browse files

[CRYPTO] rmd: Use pointer form of endian swapping operations 



This patch converts the relevant code in the rmd implementations to
use the pointer form of the endian swapping operations.  This allows
certain architectures to generate more optimised code.  For example,
on sparc64 this more than halves the CPU cycles on a typical hashing
operation.

Based on a patch by David Miller.

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 0936a944

crypto/rmd128.c

+2 −2
Original line number Diff line number Diff line
@@ -44,7 +44,7 @@ struct rmd128_ctx { 
#define F4(x, y, z) (y ^ (z & (x ^ y)))	/* z ? x : y */



#define ROUND(a, b, c, d, f, k, x, s)  { \

	(a) += f((b), (c), (d)) + le32_to_cpu(x) + (k); \

	(a) += f((b), (c), (d)) + le32_to_cpup(&(x)) + (k);	\

	(a) = rol32((a), (s)); \

}
@@ -285,7 +285,7 @@ static void rmd128_final(struct crypto_tfm *tfm, u8 *out) 


	/* Store state in digest */

	for (i = 0; i < 4; i++)

		dst[i] = cpu_to_le32(rctx->state[i]);

		dst[i] = cpu_to_le32p(&rctx->state[i]);



	/* Wipe context */

	memset(rctx, 0, sizeof(*rctx));

crypto/rmd160.c

+2 −2
Original line number Diff line number Diff line
@@ -47,7 +47,7 @@ struct rmd160_ctx { 
#define F5(x, y, z) (x ^ (y | ~z))



#define ROUND(a, b, c, d, e, f, k, x, s)  { \

	(a) += f((b), (c), (d)) + le32_to_cpu(x) + (k); \

	(a) += f((b), (c), (d)) + le32_to_cpup(&(x)) + (k); \

	(a) = rol32((a), (s)) + (e); \

	(c) = rol32((c), 10); \

}
@@ -329,7 +329,7 @@ static void rmd160_final(struct crypto_tfm *tfm, u8 *out) 


	/* Store state in digest */

	for (i = 0; i < 5; i++)

		dst[i] = cpu_to_le32(rctx->state[i]);

		dst[i] = cpu_to_le32p(&rctx->state[i]);



	/* Wipe context */

	memset(rctx, 0, sizeof(*rctx));

crypto/rmd256.c

+2 −2
Original line number Diff line number Diff line
@@ -44,7 +44,7 @@ struct rmd256_ctx { 
#define F4(x, y, z) (y ^ (z & (x ^ y)))	/* z ? x : y */



#define ROUND(a, b, c, d, f, k, x, s)  { \

	(a) += f((b), (c), (d)) + le32_to_cpu(x) + (k); \

	(a) += f((b), (c), (d)) + le32_to_cpup(&(x)) + (k); \

	(a) = rol32((a), (s)); \

}
@@ -304,7 +304,7 @@ static void rmd256_final(struct crypto_tfm *tfm, u8 *out) 


	/* Store state in digest */

	for (i = 0; i < 8; i++)

		dst[i] = cpu_to_le32(rctx->state[i]);

		dst[i] = cpu_to_le32p(&rctx->state[i]);



	/* Wipe context */

	memset(rctx, 0, sizeof(*rctx));

crypto/rmd320.c

+2 −2
Original line number Diff line number Diff line
@@ -47,7 +47,7 @@ struct rmd320_ctx { 
#define F5(x, y, z) (x ^ (y | ~z))



#define ROUND(a, b, c, d, e, f, k, x, s)  { \

	(a) += f((b), (c), (d)) + le32_to_cpu(x) + (k); \

	(a) += f((b), (c), (d)) + le32_to_cpup(&(x)) + (k); \

	(a) = rol32((a), (s)) + (e); \

	(c) = rol32((c), 10); \

}
@@ -353,7 +353,7 @@ static void rmd320_final(struct crypto_tfm *tfm, u8 *out) 


	/* Store state in digest */

	for (i = 0; i < 10; i++)

		dst[i] = cpu_to_le32(rctx->state[i]);

		dst[i] = cpu_to_le32p(&rctx->state[i]);



	/* Wipe context */

	memset(rctx, 0, sizeof(*rctx));