The current code increases its stack frame size a couple of
times throughout the function, but still performs some writes
below the stack pointer.
This change applies the fix from the original author so all
writes to the stack are above the stack pointer.
Taken from origin:
http://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=1a9d60d2
Signed-off-by: Ard Biesheuvel <[email protected]>
---
arch/arm/crypto/sha1-armv4-large.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/crypto/sha1-armv4-large.S b/arch/arm/crypto/sha1-armv4-large.S
index 92c6eed..99207c4 100644
--- a/arch/arm/crypto/sha1-armv4-large.S
+++ b/arch/arm/crypto/sha1-armv4-large.S
@@ -195,6 +195,7 @@ ENTRY(sha1_block_data_order)
add r3,r3,r10 @ E+=F_00_19(B,C,D)
cmp r14,sp
bne .L_00_15 @ [((11+4)*5+2)*3]
+ sub sp,sp,#25*4
#if __ARM_ARCH__<7
ldrb r10,[r1,#2]
ldrb r9,[r1,#3]
@@ -290,7 +291,6 @@ ENTRY(sha1_block_data_order)
add r3,r3,r10 @ E+=F_00_19(B,C,D)
ldr r8,.LK_20_39 @ [+15+16*4]
- sub sp,sp,#25*4
cmn sp,#0 @ [+3], clear carry to denote 20_39
.L_20_39_or_60_79:
ldr r9,[r14,#15*4]
--
1.7.10.4