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Commit 82062c72 authored by Herbert Xu's avatar Herbert Xu
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[CRYPTO] padlock: Rearrange context structure to reduce code size 



i386 assembly has more compact instructions for accessing 7-bit offsets.
So by moving the large members to the end of the structure we can save
quite a bit of code size.  This patch shaves about 10% or 300 bytes off
the padlock-aes file.

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 6c2bb98b

drivers/crypto/padlock-aes.c

+4 −6
Original line number Diff line number Diff line
@@ -60,15 +60,14 @@ 
#define AES_EXTENDED_KEY_SIZE_B	(AES_EXTENDED_KEY_SIZE * sizeof(uint32_t))



struct aes_ctx {

	uint32_t e_data[AES_EXTENDED_KEY_SIZE];

	uint32_t d_data[AES_EXTENDED_KEY_SIZE];

	struct {

		struct cword encrypt;

		struct cword decrypt;

	} cword;

	uint32_t *E;

	uint32_t *D;

	u32 *D;

	int key_length;

	u32 E[AES_EXTENDED_KEY_SIZE];

	u32 d_data[AES_EXTENDED_KEY_SIZE];

};



/* ====== Key management routines ====== */
@@ -313,8 +312,7 @@ static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key, 
	 * itself we must supply the plain key for both encryption

	 * and decryption.

	 */

	ctx->E = ctx->e_data;

	ctx->D = ctx->e_data;

	ctx->D = ctx->E;



	E_KEY[0] = le32_to_cpu(key[0]);

	E_KEY[1] = le32_to_cpu(key[1]);