UNIX 7th Ed. - /usr/src/libc/sys/open.s

   1: / C library -- open
   2: 
   3: / file = open(string, mode)
   4: / file == -1 means error
   5: 
   6: .globl  _open,
   7: .globl  cerror
   8: .open = 5.
   9: 
  10: _open:
  11:         mov     r5,-(sp)
  12:         mov     sp,r5
  13:         mov     4(r5),0f
  14:         mov     6(r5),0f+2
  15:         sys     0; 9f
  16:         bec     1f
  17:         jmp     cerror
  18: 1:
  19:         mov     (sp)+,r5
  20:         rts     pc
  21: .data
  22: 9:
  23:         sys     .open; 0:..; ..

Defined functions