Macro-ify function save and restore. These will be used in new functions
added for scatter/gather update operations.
Signed-off-by: Dave Watson <[email protected]>
---
arch/x86/crypto/aesni-intel_asm.S | 53 ++++++++++++++++++---------------------
1 file changed, 24 insertions(+), 29 deletions(-)
diff --git a/arch/x86/crypto/aesni-intel_asm.S b/arch/x86/crypto/aesni-intel_asm.S
index 48911fe..39b42b1 100644
--- a/arch/x86/crypto/aesni-intel_asm.S
+++ b/arch/x86/crypto/aesni-intel_asm.S
@@ -170,6 +170,26 @@ 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)
@@ -1130,16 +1150,7 @@ _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
@@ -1309,10 +1320,7 @@ _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)
@@ -1393,22 +1401,12 @@ 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
@@ -1576,10 +1574,7 @@ _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)
--
2.9.5