From: Niels Möller <nisse@lysator.liu.se>
Date: Tue, 14 May 2002 21:58:21 +0000 (+0200)
Subject: (_aes_crypt): Allocate only 32 bytes local storage on the stack.
X-Git-Tag: nettle_1.6_release_20021003~178
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=75d59956a4231740e0be107e240f51ce69bde0d8;p=thirdparty%2Fnettle.git

(_aes_crypt): Allocate only 32 bytes local storage on the stack.
Calculate wtxt and tmp using offsets from %sp, not %fp.

Rev: src/nettle/sparc/aes.asm:1.71
---

diff --git a/sparc/aes.asm b/sparc/aes.asm
index f6d05ed4..05d4a6e5 100644
--- a/sparc/aes.asm
+++ b/sparc/aes.asm
@@ -66,15 +66,19 @@ define(t1, %o1)
 define(t2, %o2)
 define(t3, %o3)
 
+define(<FRAME_SIZE>, 32)
+define(<FRAME_WTXT>, 0)
+define(<FRAME_TMP>, 16)
+
 _aes_crypt:
 ! Why -136?
-	save	%sp, -136, %sp
+	save	%sp, -FRAME_SIZE, %sp
 	cmp	length, 0
 	be	.Lend
-	! wtxt
-	add	%fp, -24, wtxt
-	
-	add	%fp, -40, tmp
+
+	add	%sp, FRAME_WTXT, wtxt
+	add	%sp, FRAME_TMP, tmp
+
 	ld	[ctx + AES_NROUNDS], nrounds
 	! Compute xor, so that we can swap efficiently.
 	xor	wtxt, tmp, diff