[CRYPTO] aes: Add wrappers for assembly routines

The wrapper routines are required when asmlinkage differs from the usual calling convention. So we need to have them. However, by rearranging the parameters, they will get optimised away to a single jump for most people. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
git-mirror · Jun 26, 2006 · e90b1a2 · e90b1a2
1 parent e805792
commit e90b1a2
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Showing 3 changed files with 28 additions and 8 deletions.
diff --git a/arch/i386/crypto/aes.c b/arch/i386/crypto/aes.c
@@ -464,6 +464,16 @@ static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
 	return 0;
 }
 
+static void aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+{
+	aes_enc_blk(tfm, dst, src);
+}
+
+static void aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+{
+	aes_dec_blk(tfm, dst, src);
+}
+
 static struct crypto_alg aes_alg = {
 	.cra_name		=	"aes",
 	.cra_driver_name	=	"aes-i586",
@@ -478,8 +488,8 @@ static struct crypto_alg aes_alg = {
 			.cia_min_keysize	=	AES_MIN_KEY_SIZE,
 			.cia_max_keysize	=	AES_MAX_KEY_SIZE,
 			.cia_setkey	   	= 	aes_set_key,
-			.cia_encrypt	 	=	aes_enc_blk,
-			.cia_decrypt	  	=	aes_dec_blk
+			.cia_encrypt	 	=	aes_encrypt,
+			.cia_decrypt	  	=	aes_decrypt
 		}
 	}
 };

diff --git a/arch/x86_64/crypto/aes-x86_64-asm.S b/arch/x86_64/crypto/aes-x86_64-asm.S
@@ -151,9 +151,9 @@ FUNC:	movq	r1,r2;			\
 #define decrypt_final(TAB,OFFSET) \
 	round(TAB,OFFSET,R2,R1,R4,R3,R6,R5,R7,R10,R5,R6,R3,R4)
 
-/* void aes_encrypt(stuct crypto_tfm *tfm, u8 *out, const u8 *in) */
+/* void aes_enc_blk(stuct crypto_tfm *tfm, u8 *out, const u8 *in) */
 
-	entry(aes_encrypt,0,enc128,enc192)
+	entry(aes_enc_blk,0,enc128,enc192)
 	encrypt_round(aes_ft_tab,-96)
 	encrypt_round(aes_ft_tab,-80)
 enc192:	encrypt_round(aes_ft_tab,-64)
@@ -170,9 +170,9 @@ enc128:	encrypt_round(aes_ft_tab,-32)
 	encrypt_final(aes_fl_tab,112)
 	return
 
-/* void aes_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in) */
+/* void aes_dec_blk(struct crypto_tfm *tfm, u8 *out, const u8 *in) */
 
-	entry(aes_decrypt,240,dec128,dec192)
+	entry(aes_dec_blk,240,dec128,dec192)
 	decrypt_round(aes_it_tab,-96)
 	decrypt_round(aes_it_tab,-80)
 dec192:	decrypt_round(aes_it_tab,-64)

diff --git a/arch/x86_64/crypto/aes.c b/arch/x86_64/crypto/aes.c
@@ -283,8 +283,18 @@ static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
 	return 0;
 }
 
-extern void aes_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in);
-extern void aes_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in);
+asmlinkage void aes_enc_blk(struct crypto_tfm *tfm, u8 *out, const u8 *in);
+asmlinkage void aes_dec_blk(struct crypto_tfm *tfm, u8 *out, const u8 *in);
+
+static void aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+{
+	aes_enc_blk(tfm, dst, src);
+}
+
+static void aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+{
+	aes_dec_blk(tfm, dst, src);
+}
 
 static struct crypto_alg aes_alg = {
 	.cra_name		=	"aes",