Trailing-Edge
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PDP-10 Archives
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bb-kl11c-bm_tops20_v6_1_atpch1_16
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autopatch/cobcom.c12
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REP 34/1 ;12C1
WIT
;MJC 4-NOV-85 [1613] Check for table overflow
REP 5/10 ;12C2
WIT
REP 7/11 ;12C3
WIT
REP 32/13 ;12C4
JRST 1(TE) ;SUCCESS EXIT
WIT
JRST 1(TE) ;SUCCESS EXIT
REP 33/29 ;12C5
XPAND1: MOVE TE,SAVEAC ;ANY TABLES ABOVE THIS ONE?
WIT
;[1613]CHECK FOR TABLE OVERFLOW
XPAND1: HRRZ TA,SAVEAC ;[1613]GET TABLE POINTER
HLRZ TE,SAVEAC ;[1613]AMOUNT OF GROTH
ADD TE,1(TA) ;[1613]TABLE WILL GROW TO THIS SIZE
HRRZ TD,(TA) ;[1613]THE START OF THE TABLE
HRRZ TE,TE ;[1613]RIGHT HALF ONLY
SUB TE,TD ;[1613]LESS THE START ADDRESS
MOVE TD,TE ;[1613]SAVE THE DIFFERENCE
ANDI TE,700000 ;[1613]MORE THAN 15 BITS?
CAIN TE,0 ;[1613]OVERFLOW IF SO
JRST XPAND6 ;[1613]OK - NO TABLE OVERFLOW
;[1613]SEE IF WE CAN EXPAND ONE LAST TIME BY SOME SMALLER AMOUNT
ANDI TD,77777 ;[1613]THE AMOUNT OF OVERLAP
HLRZ TE,SAVEAC ;[1613]EXPANSION WANTED
SUB TE,TD ;[1613]WHAT WILL FIT
HLRE TD,1(TA) ;[1613]LEFT UNUSED FROM LAST EXPANSION
ADD TE,TD ;[1613]INCLUDE IT TOO
SOS TE ;[1613]OFF BY ONE
CAIG TE,20 ;[1613]ENOUGH TO SALVAGE?
JRST TBLOVF ;[1613]NO - GIVE UP
HRLM TE,SAVEAC ;[1613]YES - EXPAND BY THAT MUCH
JRST XPAND6 ;[1613]CONTINUE WITH A SMALLER EXPANSION
TBLOVF: OUTSTR [ASCIZ /?Compiler table overflow. Compilation aborted.
/] ;[1613]
JRST RESTRT ;[1613]ABORT AND RESTART
XPAND6: MOVE TE,SAVEAC ;[1613]ANY TABLES ABOVE THIS ONE?
SUM 75573