From e3095ee3b8bc84d4d93796869d694455b7911b2f Mon Sep 17 00:00:00 2001
From: Thom Johansen <thomj@rockbox.org>
Date: Sun, 13 Nov 2005 23:47:26 +0000
Subject: iPod fixes. Stack starts at stackend. Munge stack with 0xdeadbeef.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7851 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/crt0.S | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/firmware/crt0.S b/firmware/crt0.S
index 9ef597fad6..cba7221471 100644
--- a/firmware/crt0.S
+++ b/firmware/crt0.S
@@ -75,9 +75,16 @@ cop_wake_start:
     ldr    pc, [r0]
 
 1:
-    /* setup some stack */
-    ldr    sp, = _stackbegin
-
+    /* setup some stack and munge it with 0xdeadbeef */
+    ldr    sp, =_stackend
+    mov    r3, sp
+    ldr    r2, =_stackbegin
+    ldr    r4, =0xdeadbeef
+.mungeloop:
+    str    r4, [r2], #4
+    cmp    r2, r3
+    bne    .mungeloop
+    
     /* get the high part of our execute address */
     ldr    r2, =0xffffff00
     and    r4, pc, r2
-- 
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