.define _ptrace
.extern _ptrace
.text
_ptrace:
enter[], 0
xord @_errno,@_errno
addr 8(fp),r7
movd 16,r0
addd r0,r7
1:
subd 4,r7
movd 0(r7),tos
acbd -4,r0,1b
movd 26,tos
jsr @.mon
cmpqd 0,tos
beq I0011
movd tos,r7
movd r7,@_errno
movd -1,tos
I0011:
movd tos,r7
movd r7,r4
exit []
ret 0