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1.1 ! root 1: # ! 2: # Copyright (c) 1979 Regents of the University of California ! 3: # ! 4: # char sccsid[] = "@(#)01int.s 4.1 10/10/80"; ! 5: # ! 6: _HALT: ! 7: movw $EHALT,_perrno ! 8: jbr error ! 9: ! 10: _GOTO: ! 11: cvtbl (r10)+,r0 ! 12: movl _display(r0),r6 #r6 has exit dp value ! 13: addl3 (r10),ap,r10 #establish return address ! 14: L0101: ! 15: cmpl r6,(r9) #check for done ! 16: blss egoto #missed the requested frame ! 17: beql L0102 ! 18: pushl (r9) #flush and close local files ! 19: calls $1,_pclose ! 20: movl (r9),sp #deallocate local vars ! 21: movl 16(sp),(r9) #restore old display entry ! 22: movl 20(sp),r9 #get old display pointer ! 23: brb L0101 #continue ! 24: L0102: ! 25: movl 4(sp),_file #restore old I/O info ! 26: movl 8(sp),r7 ! 27: movl *(r9),sp #reset sp to top of stack ! 28: jmp (r8) ! 29: egoto: ! 30: movl $EGOTO,_perrno ! 31: jbr error ! 32: ! 33: _LINO: ! 34: cmpl *(r9),sp #check stack integrity ! 35: jneq stknemp ! 36: cvtbl (r10)+,r11 #update line number ! 37: bneq L0103 ! 38: movzwl (r10)+,r11 ! 39: L0103: ! 40: aoblss _stlim,_stcnt,L0104 #update statement count ! 41: movw $ESTLIM,_perrno ! 42: jbr error ! 43: stknemp: ! 44: movw $ESTKNEMP,_perrno ! 45: jbr error ! 46: L0104: ! 47: jmp (r8) ! 48: ! 49: _IF: ! 50: tstw (sp)+ ! 51: beql _TRA ! 52: addl2 $3,r10 ! 53: jmp (r8) ! 54: ! 55: _TRA4: ! 56: addl3 1(r10),ap,r10 ! 57: jmp (r8) ! 58: ! 59: _TRA: ! 60: incl r10 ! 61: cvtwl (r10),r0 ! 62: addl2 r0,r10 ! 63: jmp (r8) ! 64: ! 65: _PUSH: ! 66: cvtbl (r10)+,r0 ! 67: bneq L0105 ! 68: movl (r10)+,r0 ! 69: L0105: ! 70: mnegl r0,r0 ! 71: blbc r0,L0106 ! 72: incl r0 ! 73: L0106: ! 74: subl3 r0,sp,r1 #r1 points to new top of stack ! 75: clrl tempsize(r1) #check for memory (fault => not available) ! 76: movl r1,sp #allocate the memory ! 77: movc5 $0,(r2),$0,r0,(sp) ! 78: jmp (r8) ! 79: ! 80: _SDUP2: ! 81: incl r10 ! 82: movw (sp),-(sp) ! 83: jmp (r8) ! 84: ! 85: _SDUP4: ! 86: incl r10 ! 87: movl (sp),-(sp) ! 88: jmp (r8) ! 89: ! 90: _ASRT: ! 91: incl r10 ! 92: tstw (sp)+ ! 93: beql L0107 ! 94: jmp (r8) ! 95: L0107: ! 96: movw $EASRT,_perrno ! 97: jbr error
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