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authorHuang Ying <ying.huang@intel.com>2009-01-09 17:25:50 +1100
committerHerbert Xu <herbert@gondor.apana.org.au>2009-02-18 16:48:05 +0800
commit07bf44f86989f5ed866510374fe761d1903681fb (patch)
treeb7a4bbd3a66dd6fec0243a12f8569a4ad0fce9da /arch/x86/crypto/aes-i586-asm_32.S
parent109568e110ed67d4be1b28609b9fa00fca97f8eb (diff)
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crypto: aes - Export x86 AES encrypt/decrypt functions
Intel AES-NI AES acceleration instructions touch XMM state, to use that in soft_irq context, general x86 AES implementation is used as fallback. The first parameter is changed from struct crypto_tfm * to struct crypto_aes_ctx * to make it easier to deal with 16 bytes alignment requirement of AES-NI implementation. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/x86/crypto/aes-i586-asm_32.S')
-rw-r--r--arch/x86/crypto/aes-i586-asm_32.S18
1 files changed, 9 insertions, 9 deletions
diff --git a/arch/x86/crypto/aes-i586-asm_32.S b/arch/x86/crypto/aes-i586-asm_32.S
index 5252c3880177..b949ec2f9af4 100644
--- a/arch/x86/crypto/aes-i586-asm_32.S
+++ b/arch/x86/crypto/aes-i586-asm_32.S
@@ -41,14 +41,14 @@
#define tlen 1024 // length of each of 4 'xor' arrays (256 32-bit words)
/* offsets to parameters with one register pushed onto stack */
-#define tfm 8
+#define ctx 8
#define out_blk 12
#define in_blk 16
-/* offsets in crypto_tfm structure */
-#define klen (crypto_tfm_ctx_offset + 480)
-#define ekey (crypto_tfm_ctx_offset + 0)
-#define dkey (crypto_tfm_ctx_offset + 240)
+/* offsets in crypto_aes_ctx structure */
+#define klen (480)
+#define ekey (0)
+#define dkey (240)
// register mapping for encrypt and decrypt subroutines
@@ -217,7 +217,7 @@
do_col (table, r5,r0,r1,r4, r2,r3); /* idx=r5 */
// AES (Rijndael) Encryption Subroutine
-/* void aes_enc_blk(struct crypto_tfm *tfm, u8 *out_blk, const u8 *in_blk) */
+/* void aes_enc_blk(struct crypto_aes_ctx *ctx, u8 *out_blk, const u8 *in_blk) */
.global aes_enc_blk
@@ -228,7 +228,7 @@
aes_enc_blk:
push %ebp
- mov tfm(%esp),%ebp
+ mov ctx(%esp),%ebp
// CAUTION: the order and the values used in these assigns
// rely on the register mappings
@@ -292,7 +292,7 @@ aes_enc_blk:
ret
// AES (Rijndael) Decryption Subroutine
-/* void aes_dec_blk(struct crypto_tfm *tfm, u8 *out_blk, const u8 *in_blk) */
+/* void aes_dec_blk(struct crypto_aes_ctx *ctx, u8 *out_blk, const u8 *in_blk) */
.global aes_dec_blk
@@ -303,7 +303,7 @@ aes_enc_blk:
aes_dec_blk:
push %ebp
- mov tfm(%esp),%ebp
+ mov ctx(%esp),%ebp
// CAUTION: the order and the values used in these assigns
// rely on the register mappings