提交 82062c72 编写于 作者: H Herbert Xu

[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: NHerbert Xu <herbert@gondor.apana.org.au>
上级 6c2bb98b
......@@ -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]);
......
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