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Coldfire: More compact init code.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7641 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2005-10-18 21:20:23 +00:00
parent b4f0afd429
commit 074b73856b
1 changed files with 14 additions and 20 deletions
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34
firmware/crt0.S
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@ -267,48 +267,42 @@ irq_handler:
lea _iramstart,%a3
lea _iramend,%a4
.iramloop:
move.l (%a2)+,(%a3)+
cmp.l %a3,%a4
beq .iramloopend
move.w (%a2)+,(%a3)+
bra .iramloop
.iramloopend:
bhi.b .iramloop
#endif
lea _edata,%a2
lea _end,%a4
clr.l %d0
.edataloop:
clr.l (%a2)+
cmp.l %a2,%a4
beq .edataloopend
move.w %d0,(%a2)+
bra .edataloop
.edataloopend:
bhi.b .edataloop
lea _datacopy,%a2
lea _datastart,%a3
lea _dataend,%a4
cmp.l %a2,%a3
beq.b .nodatacopy
.dataloop:
move.l (%a2)+,(%a3)+
cmp.l %a3,%a4
beq .dataloopend
move.w (%a2)+,(%a3)+
bra .dataloop
.dataloopend:
bhi.b .dataloop
.nodatacopy:
/* Munge the main stack */
move.l #0xdeadbeef,%d0
lea stackbegin,%a2
lea stackend,%a4
move.l #0xdeadbeef,%d0
move.l %a4,%sp
.mungeloop:
cmp.l %a2,%a4
beq .mungeloopend
move.l %d0,(%a2)+
bra .mungeloop
.mungeloopend:
cmp.l %a2,%a4
bhi.b .mungeloop
lea stackend,%sp
jsr main
.hoo:
bra .hoo
bra.b .hoo
.section .resetvectors
vectors: