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authorSabrina Dubroca <sd@queasysnail.net>2017-04-28 18:12:01 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2017-05-18 13:19:55 +0800
commit2df7e813627622daf1168e30cd2b29467b7e14e5 (patch)
tree61f666723fd748e193cbeae7412ec9c4c03b96a1 /arch/x86/crypto
parent27352c45c56181b69aa6c2e1aad48f80dd5f9ca8 (diff)
downloadblackbird-op-linux-2df7e813627622daf1168e30cd2b29467b7e14e5.tar.gz
blackbird-op-linux-2df7e813627622daf1168e30cd2b29467b7e14e5.zip
crypto: aesni - make AVX2 AES-GCM work with all valid auth_tag_len
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/x86/crypto')
-rw-r--r--arch/x86/crypto/aesni-intel_avx-x86_64.S31
1 files changed, 24 insertions, 7 deletions
diff --git a/arch/x86/crypto/aesni-intel_avx-x86_64.S b/arch/x86/crypto/aesni-intel_avx-x86_64.S
index 7230808a7cef..faecb1518bf8 100644
--- a/arch/x86/crypto/aesni-intel_avx-x86_64.S
+++ b/arch/x86/crypto/aesni-intel_avx-x86_64.S
@@ -2804,19 +2804,36 @@ _return_T\@:
cmp $16, %r11
je _T_16\@
- cmp $12, %r11
- je _T_12\@
+ cmp $8, %r11
+ jl _T_4\@
_T_8\@:
vmovq %xmm9, %rax
mov %rax, (%r10)
- jmp _return_T_done\@
-_T_12\@:
- vmovq %xmm9, %rax
- mov %rax, (%r10)
+ add $8, %r10
+ sub $8, %r11
vpsrldq $8, %xmm9, %xmm9
+ cmp $0, %r11
+ je _return_T_done\@
+_T_4\@:
vmovd %xmm9, %eax
- mov %eax, 8(%r10)
+ mov %eax, (%r10)
+ add $4, %r10
+ sub $4, %r11
+ vpsrldq $4, %xmm9, %xmm9
+ cmp $0, %r11
+ je _return_T_done\@
+_T_123\@:
+ vmovd %xmm9, %eax
+ cmp $2, %r11
+ jl _T_1\@
+ mov %ax, (%r10)
+ cmp $2, %r11
+ je _return_T_done\@
+ add $2, %r10
+ sar $16, %eax
+_T_1\@:
+ mov %al, (%r10)
jmp _return_T_done\@
_T_16\@:
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