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start.s: zeroize RB

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This commit is contained in:
Zack Buhman 2024-11-08 21:12:01 -06:00
parent 29ae10c0af
commit 77cdb3554f
1 changed files with 5 additions and 1 deletions
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6
start.s
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@ -6,9 +6,11 @@ _start:
/* mask all interrupts */
mov.l imask_all,r0
mov.l zero_rb,r2
stc sr,r1
or r1,r0
ldc r0,sr
and r0,r2
ldc r2,sr
/* save pr */
sts.l pr,@-r15
@ -31,6 +33,8 @@ stack_end_ptr:
.long __stack_end
imask_all:
.long 0xf0
zero_rb:
.long ~(1 << 29)
runtime_init_ptr:
.long _runtime_init
main_ptr: