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authorDave Watson <davejwatson@fb.com>2018-02-14 09:38:35 -0800
committerHerbert Xu <herbert@gondor.apana.org.au>2018-02-22 22:16:43 +0800
commit6c2c86b3e05822abec2fc0d7a5c31637b57cb126 (patch)
tree71c92b826a31b2ae14dbca458a521d6adfa2cd5b /arch/x86/crypto
parente1fd316fbae104f96cc9c36073fe102d298f8576 (diff)
crypto: aesni - Macro-ify func save/restore
Macro-ify function save and restore. These will be used in new functions added for scatter/gather update operations. Signed-off-by: Dave Watson <davejwatson@fb.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/x86/crypto')
-rw-r--r--arch/x86/crypto/aesni-intel_asm.S53
1 files changed, 24 insertions, 29 deletions
diff --git a/arch/x86/crypto/aesni-intel_asm.S b/arch/x86/crypto/aesni-intel_asm.S
index 251a65f84198..d2645f62720e 100644
--- a/arch/x86/crypto/aesni-intel_asm.S
+++ b/arch/x86/crypto/aesni-intel_asm.S
@@ -171,6 +171,26 @@ ALL_F: .octa 0xffffffffffffffffffffffffffffffff
#define TKEYP T1
#endif
+.macro FUNC_SAVE
+ push %r12
+ push %r13
+ push %r14
+ mov %rsp, %r14
+#
+# states of %xmm registers %xmm6:%xmm15 not saved
+# all %xmm registers are clobbered
+#
+ sub $VARIABLE_OFFSET, %rsp
+ and $~63, %rsp
+.endm
+
+
+.macro FUNC_RESTORE
+ mov %r14, %rsp
+ pop %r14
+ pop %r13
+ pop %r12
+.endm
#ifdef __x86_64__
/* GHASH_MUL MACRO to implement: Data*HashKey mod (128,127,126,121,0)
@@ -1131,16 +1151,7 @@ _esb_loop_\@:
*
*****************************************************************************/
ENTRY(aesni_gcm_dec)
- push %r12
- push %r13
- push %r14
- mov %rsp, %r14
-/*
-* states of %xmm registers %xmm6:%xmm15 not saved
-* all %xmm registers are clobbered
-*/
- sub $VARIABLE_OFFSET, %rsp
- and $~63, %rsp # align rsp to 64 bytes
+ FUNC_SAVE
mov %arg6, %r12
movdqu (%r12), %xmm13 # %xmm13 = HashKey
movdqa SHUF_MASK(%rip), %xmm2
@@ -1310,10 +1321,7 @@ _T_1_decrypt:
_T_16_decrypt:
movdqu %xmm0, (%r10)
_return_T_done_decrypt:
- mov %r14, %rsp
- pop %r14
- pop %r13
- pop %r12
+ FUNC_RESTORE
ret
ENDPROC(aesni_gcm_dec)
@@ -1394,22 +1402,12 @@ ENDPROC(aesni_gcm_dec)
* poly = x^128 + x^127 + x^126 + x^121 + 1
***************************************************************************/
ENTRY(aesni_gcm_enc)
- push %r12
- push %r13
- push %r14
- mov %rsp, %r14
-#
-# states of %xmm registers %xmm6:%xmm15 not saved
-# all %xmm registers are clobbered
-#
- sub $VARIABLE_OFFSET, %rsp
- and $~63, %rsp
+ FUNC_SAVE
mov %arg6, %r12
movdqu (%r12), %xmm13
movdqa SHUF_MASK(%rip), %xmm2
PSHUFB_XMM %xmm2, %xmm13
-
# precompute HashKey<<1 mod poly from the HashKey (required for GHASH)
movdqa %xmm13, %xmm2
@@ -1577,10 +1575,7 @@ _T_1_encrypt:
_T_16_encrypt:
movdqu %xmm0, (%r10)
_return_T_done_encrypt:
- mov %r14, %rsp
- pop %r14
- pop %r13
- pop %r12
+ FUNC_RESTORE
ret
ENDPROC(aesni_gcm_enc)