eiac/crypto
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

salsa20/salsa: hide SP alignment from spadj

Browse Source 
The spadj computation in the assembler can't handle SP alignment code
and will just get confused by how it's currently written. Do the
alignment in a scratch register to hide it from the assembler.

Change-Id: I8857f428d96717db29e3a56050f2381bd86807c6
Reviewed-on: https://go-review.googlesource.com/31586
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Adam Langley <agl@golang.org>
This commit is contained in:
Austin Clements
2016-10-21 19:51:15 +00:00
parent e67f5eca87
commit a0819bbd36
1 changed files with 4 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
salsa20/salsa/salsa2020_amd64.s
+4 -4
View File
@@ -16,10 +16,10 @@ TEXT ·salsa2020XORKeyStream(SB),0,$512-40
MOVQ key+32(FP),R8
MOVQ SP,R11
MOVQ $31,R9
NOTQ R9
ANDQ R9,SP
ADDQ $32,SP
MOVQ SP,R9
ADDQ $31, R9
ANDQ $~31, R9
MOVQ R9, SP
MOVQ R11,352(SP)
MOVQ R12,360(SP)