mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

crypto: arm64/aes-modes - use frame_push/pop macros consistently 

Use the frame_push and frame_pop macros to create the stack frames in
the AES chaining mode wrappers so that they will get PAC and/or shadow
call stack protection when configured.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Ard Biesheuvel 2022-11-29 17:48:50 +01:00 committed by Herbert Xu
parent 67ab02dce3
commit 7d709af180
1 changed files with 12 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
arch/arm64/crypto/aes-modes.S
View File

@ -52,8 +52,7 @@ SYM_FUNC_END(aes_decrypt_block5x)
*/
AES_FUNC_START(aes_ecb_encrypt)
stp x29, x30, [sp, #-16]!
mov x29, sp
frame_push 0
enc_prepare w3, x2, x5
@ -77,14 +76,13 @@ ST5( st1 {v4.16b}, [x0], #16 )
subs w4, w4, #1
bne .Lecbencloop
.Lecbencout:
ldp x29, x30, [sp], #16
frame_pop
ret
AES_FUNC_END(aes_ecb_encrypt)
AES_FUNC_START(aes_ecb_decrypt)
stp x29, x30, [sp, #-16]!
mov x29, sp
frame_push 0
dec_prepare w3, x2, x5
@ -108,7 +106,7 @@ ST5( st1 {v4.16b}, [x0], #16 )
subs w4, w4, #1
bne .Lecbdecloop
.Lecbdecout:
ldp x29, x30, [sp], #16
frame_pop
ret
AES_FUNC_END(aes_ecb_decrypt)
@ -171,9 +169,6 @@ AES_FUNC_END(aes_cbc_encrypt)
AES_FUNC_END(aes_essiv_cbc_encrypt)
AES_FUNC_START(aes_essiv_cbc_decrypt)
stp x29, x30, [sp, #-16]!
mov x29, sp
ld1 {cbciv.16b}, [x5] /* get iv */
mov w8, #14 /* AES-256: 14 rounds */
@ -182,11 +177,9 @@ AES_FUNC_START(aes_essiv_cbc_decrypt)
b .Lessivcbcdecstart
AES_FUNC_START(aes_cbc_decrypt)
stp x29, x30, [sp, #-16]!
mov x29, sp
ld1 {cbciv.16b}, [x5] /* get iv */
.Lessivcbcdecstart:
frame_push 0
dec_prepare w3, x2, x6
.LcbcdecloopNx:
@ -236,7 +229,7 @@ ST5( st1 {v4.16b}, [x0], #16 )
bne .Lcbcdecloop
.Lcbcdecout:
st1 {cbciv.16b}, [x5] /* return iv */
ldp x29, x30, [sp], #16
frame_pop
ret
AES_FUNC_END(aes_cbc_decrypt)
AES_FUNC_END(aes_essiv_cbc_decrypt)
@ -337,8 +330,7 @@ AES_FUNC_END(aes_cbc_cts_decrypt)
BLOCKS .req x13
BLOCKS_W .req w13
stp x29, x30, [sp, #-16]!
mov x29, sp
frame_push 0
enc_prepare ROUNDS_W, KEY, IV_PART
ld1 {vctr.16b}, [IV]
@ -481,7 +473,7 @@ ST5( st1 {v4.16b}, [OUT], #16 )
.if !\xctr
st1 {vctr.16b}, [IV] /* return next CTR value */
.endif
ldp x29, x30, [sp], #16
frame_pop
ret
.Lctrtail\xctr:
@ -645,8 +637,7 @@ AES_FUNC_END(aes_xctr_encrypt)
.endm
AES_FUNC_START(aes_xts_encrypt)
stp x29, x30, [sp, #-16]!
mov x29, sp
frame_push 0
ld1 {v4.16b}, [x6]
xts_load_mask v8
@ -704,7 +695,7 @@ AES_FUNC_START(aes_xts_encrypt)
st1 {v0.16b}, [x0]
.Lxtsencret:
st1 {v4.16b}, [x6]
ldp x29, x30, [sp], #16
frame_pop
ret
.LxtsencctsNx:
@ -732,8 +723,7 @@ AES_FUNC_START(aes_xts_encrypt)
AES_FUNC_END(aes_xts_encrypt)
AES_FUNC_START(aes_xts_decrypt)
stp x29, x30, [sp, #-16]!
mov x29, sp
frame_push 0
/* subtract 16 bytes if we are doing CTS */
sub w8, w4, #0x10
@ -794,7 +784,7 @@ AES_FUNC_START(aes_xts_decrypt)
b .Lxtsdecloop
.Lxtsdecout:
st1 {v4.16b}, [x6]
ldp x29, x30, [sp], #16
frame_pop
ret
.Lxtsdeccts: