lisa/android_kernel_xiaomi_sm8350
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

crypto: aesni - Use TEST %reg,%reg instead of CMP $0,%reg

Browse Source 
commit 032d049ea0f45b45c21f3f02b542aa18bc6b6428 upstream.

CMP $0,%reg can't set overflow flag, so we can use shorter TEST %reg,%reg
instruction when only zero and sign flags are checked (E,L,LE,G,GE conditions).

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Ard Biesheuvel <ardb@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Uros Bizjak 2020-11-27 10:44:52 +01:00 committed by Greg Kroah-Hartman
parent eeb0899e00
commit ae69c97bb7
2 changed files with 20 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
arch/x86/crypto/aesni-intel_asm.S
View File

@ -319,7 +319,7 @@ _initial_blocks_\@:
# Main loop - Encrypt/Decrypt remaining blocks
cmp $0, %r13
test %r13, %r13
je _zero_cipher_left_\@
sub $64, %r13
je _four_cipher_left_\@
@ -438,7 +438,7 @@ _multiple_of_16_bytes_\@:
mov PBlockLen(%arg2), %r12
cmp $0, %r12
test %r12, %r12
je _partial_done\@
GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6
@ -475,7 +475,7 @@ _T_8_\@:
add $8, %r10
sub $8, %r11
psrldq $8, %xmm0
cmp $0, %r11
test %r11, %r11
je _return_T_done_\@
_T_4_\@:
movd %xmm0, %eax
@ -483,7 +483,7 @@ _T_4_\@:
add $4, %r10
sub $4, %r11
psrldq $4, %xmm0
cmp $0, %r11
test %r11, %r11
je _return_T_done_\@
_T_123_\@:
movd %xmm0, %eax
@ -620,7 +620,7 @@ _get_AAD_blocks\@:
/* read the last <16B of AAD */
_get_AAD_rest\@:
cmp $0, %r11
test %r11, %r11
je _get_AAD_done\@
READ_PARTIAL_BLOCK %r10, %r11, \TMP1, \TMP7
@ -641,7 +641,7 @@ _get_AAD_done\@:
.macro PARTIAL_BLOCK CYPH_PLAIN_OUT PLAIN_CYPH_IN PLAIN_CYPH_LEN DATA_OFFSET \
AAD_HASH operation
mov PBlockLen(%arg2), %r13
cmp $0, %r13
test %r13, %r13
je _partial_block_done_\@ # Leave Macro if no partial blocks
# Read in input data without over reading
cmp $16, \PLAIN_CYPH_LEN
@ -693,7 +693,7 @@ _no_extra_mask_1_\@:
PSHUFB_XMM %xmm2, %xmm3
pxor %xmm3, \AAD_HASH
cmp $0, %r10
test %r10, %r10
jl _partial_incomplete_1_\@
# GHASH computation for the last <16 Byte block
@ -728,7 +728,7 @@ _no_extra_mask_2_\@:
PSHUFB_XMM %xmm2, %xmm9
pxor %xmm9, \AAD_HASH
cmp $0, %r10
test %r10, %r10
jl _partial_incomplete_2_\@
# GHASH computation for the last <16 Byte block
@ -748,7 +748,7 @@ _encode_done_\@:
PSHUFB_XMM %xmm2, %xmm9
.endif
# output encrypted Bytes
cmp $0, %r10
test %r10, %r10
jl _partial_fill_\@
mov %r13, %r12
mov $16, %r13
@ -2731,7 +2731,7 @@ ENDPROC(aesni_ctr_enc)
*/
ENTRY(aesni_xts_crypt8)
FRAME_BEGIN
cmpb $0, %cl
testb %cl, %cl
movl $0, %ecx
movl $240, %r10d
leaq _aesni_enc4, %r11

20
arch/x86/crypto/aesni-intel_avx-x86_64.S
View File

@ -370,7 +370,7 @@ _initial_num_blocks_is_0\@:
_initial_blocks_encrypted\@:
cmp $0, %r13
test %r13, %r13
je _zero_cipher_left\@
sub $128, %r13
@ -529,7 +529,7 @@ _multiple_of_16_bytes\@:
vmovdqu HashKey(arg2), %xmm13
mov PBlockLen(arg2), %r12
cmp $0, %r12
test %r12, %r12
je _partial_done\@
#GHASH computation for the last <16 Byte block
@ -574,7 +574,7 @@ _T_8\@:
add $8, %r10
sub $8, %r11
vpsrldq $8, %xmm9, %xmm9
cmp $0, %r11
test %r11, %r11
je _return_T_done\@
_T_4\@:
vmovd %xmm9, %eax
@ -582,7 +582,7 @@ _T_4\@:
add $4, %r10
sub $4, %r11
vpsrldq $4, %xmm9, %xmm9
cmp $0, %r11
test %r11, %r11
je _return_T_done\@
_T_123\@:
vmovd %xmm9, %eax
@ -626,7 +626,7 @@ _get_AAD_blocks\@:
cmp $16, %r11
jge _get_AAD_blocks\@
vmovdqu \T8, \T7
cmp $0, %r11
test %r11, %r11
je _get_AAD_done\@
vpxor \T7, \T7, \T7
@ -645,7 +645,7 @@ _get_AAD_rest8\@:
vpxor \T1, \T7, \T7
jmp _get_AAD_rest8\@
_get_AAD_rest4\@:
cmp $0, %r11
test %r11, %r11
jle _get_AAD_rest0\@
mov (%r10), %eax
movq %rax, \T1
@ -750,7 +750,7 @@ _done_read_partial_block_\@:
.macro PARTIAL_BLOCK GHASH_MUL CYPH_PLAIN_OUT PLAIN_CYPH_IN PLAIN_CYPH_LEN DATA_OFFSET \
AAD_HASH ENC_DEC
mov PBlockLen(arg2), %r13
cmp $0, %r13
test %r13, %r13
je _partial_block_done_\@ # Leave Macro if no partial blocks
# Read in input data without over reading
cmp $16, \PLAIN_CYPH_LEN
@ -802,7 +802,7 @@ _no_extra_mask_1_\@:
vpshufb %xmm2, %xmm3, %xmm3
vpxor %xmm3, \AAD_HASH, \AAD_HASH
cmp $0, %r10
test %r10, %r10
jl _partial_incomplete_1_\@
# GHASH computation for the last <16 Byte block
@ -837,7 +837,7 @@ _no_extra_mask_2_\@:
vpshufb %xmm2, %xmm9, %xmm9
vpxor %xmm9, \AAD_HASH, \AAD_HASH
cmp $0, %r10
test %r10, %r10
jl _partial_incomplete_2_\@
# GHASH computation for the last <16 Byte block
@ -857,7 +857,7 @@ _encode_done_\@:
vpshufb %xmm2, %xmm9, %xmm9
.endif
# output encrypted Bytes
cmp $0, %r10
test %r10, %r10
jl _partial_fill_\@
mov %r13, %r12
mov $16, %r13