2.9BSD - /usr/src/ucb/pascal/utilities/assubs/mcrt0.s

   1: / C runtime startoff including monitoring
   2: /
   3: / Modified to work in separate i/d
   4: / Remove comments below to use without floating point
   5: /
   6: 
   7: cbufs   = 150.
   8: 
   9: .globl  _monitor
  10: .globl  _sbrk
  11: .globl  _main
  12: .globl  _exit
  13: .globl  _IEH3exit
  14: .globl  _etext
  15: .comm   countbase,2
  16: 
  17: .comm   savr5,2
  18: 
  19: /.globl	fptrap,fpjsr
  20: start:
  21: /	sys	signal; 4; fptrap
  22: /	jsr	pc,fpjsr
  23:         setd
  24:         mov     sp,r0
  25:         mov     (r0),-(sp)
  26:         tst     (r0)+
  27:         mov     r0,2(sp)
  28: 
  29:         mov     $_etext,r1
  30:         sub     $eprol,r1
  31:         add     $7,r1
  32:         ash     $-3,r1
  33:         bic     $!17777,r1
  34:         mov     $cbufs,-(sp)
  35:         add     $3*[cbufs+1],r1
  36:         mov     r1,-(sp)
  37:         asl     r1
  38:         mov     r1,-(sp)
  39:         jsr     pc,_sbrk
  40:         tst     (sp)+
  41:         cmp     r0,$-1
  42:         beq     9f
  43:         mov     r0,-(sp)
  44:         add     $6,r0
  45:         mov     r0,countbase
  46:         mov     $_etext,-(sp)
  47:         mov     $eprol,-(sp)
  48:         jsr     pc,_monitor
  49:         add     $10.,sp
  50:         jsr     pc,_main
  51:         cmp     (sp)+,(sp)+
  52:         jsr     pc,_exit
  53: 
  54: 9:
  55:         mov     $2,r0
  56:         sys     write; 8f; 9f-8f
  57: 
  58: .data; 8: <No space for monitor buffer\n>; 9:.even; .text
  59: 
  60: _exit:
  61: _IEH3exit:
  62:         mov     r5,-(sp)
  63:         mov     sp,r5
  64:         clr     -(sp)
  65:         jsr     pc,_monitor
  66:         tst     (sp)+
  67:         mov     4(r5),r0
  68:         sys     exit
  69: eprol:

Defined functions

Defined variables