iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[CRYPTO] padlock: Rearrange context structure to reduce code size

Browse Source 
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: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2006-05-16 22:20:34 +10:00
parent 6c2bb98bc3
commit 82062c72cd
1 changed files with 4 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/crypto/padlock-aes.c
View File

@ -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]);