ack/mach/pdp/libsys/_sbrk.s

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