devs/foxbox
1
0
Fork 0
forked from len0rd/rockbox
Code Pull requests Activity

Added main stack munging

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1356 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Linus Nielsen Feltzing 2002-07-15 22:15:33 +00:00
parent e699fba4b1
commit a23fe48741
1 changed files with 18 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

21
firmware/crt0.S
View file

@ -99,6 +99,17 @@ start_l:
bt start_l bt start_l
nop nop
/* Munge the main thread stack */
mov.l stack_k,r2
mov.l deadbeef_k,r0
mov.l stackbegin_k,r1
munge_loop:
mov.l r0,@r1
add #4,r1
cmp/ge r1,r2
bt munge_loop
nop
! call the mainline ! call the mainline
mov.l main_k,r0 mov.l main_k,r0
jsr @r0 jsr @r0
@ -108,7 +119,11 @@ start_l:
.align 2 .align 2
stack_k: stack_k:
.long _stack .long _stackend
stackbegin_k:
.long _stackbegin
deadbeef_k:
.long 0xdeadbeef
edata_k: edata_k:
.long _edata .long _edata
end_k: end_k:
@ -123,6 +138,6 @@ orig_vbr_k:
.section .resetvectors .section .resetvectors
vectors: vectors:
.long start .long start
.long _stack .long _stackend
.long start .long start
.long _stack .long _stackend