ack/mach/pdp/libsys/sbrk.s

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ArmAsm
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#include "sys.h"
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.define _sbrk
.define _brk
.extern _end
.extern _errno
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_sbrk:
mov 2(sp),0f+2
beq 1f
add xxx,0f+2
bcs 2f
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sys indir; .data2 0f
bcc 1f
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2:
mov r0,_errno
mov $-1,r0
rts pc
1:
mov xxx,r0
add 2(sp),xxx
rts pc
_brk:
mov 2(sp),0f+2
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sys indir; .data2 0f
bcc 1f
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mov r0,_errno
mov $-1,r0
rts pc
1:
mov 2(sp),xxx
clr r0
rts pc
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.sect .data
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0:
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sys break
.data2 0
xxx: .data2 _end