ack/mach/pdp/libsys/sbrk.s
1987-01-07 17:13:41 +00:00

39 lines
371 B
ArmAsm

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