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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>
hifive-unleashed-5.1
Sabrina Dubroca 2017-04-28 18:12:01 +02:00 committed by Herbert Xu
parent 27352c45c5
commit 2df7e81362
1 changed files with 24 additions and 7 deletions
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31
arch/x86/crypto/aesni-intel_avx-x86_64.S
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@ -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\@: