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BB-H138B-BM
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language-sources/cn2n.bli
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!THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY ONLY BE USED
! OR COPIED IN ACCORDANCE WITH THE TERMS OF SUCH LICENSE.
!
!COPYRIGHT (C) 1972,1973,1974,1977,1978 DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS. 01754
!FILENAME: H2CNTR.BLI
!DATE: 29 MAY 73 MGM/FLD
!EDITED: 21 OCT 75 PAB: 5.200.3
%3.2% GLOBAL BIND H2CNV=1; !MODULE VERSION NUMBER
FORWARD RLINKAGE;
GLOBAL ROUTINE GPROLOG(RFSTE,DISPLAYP,NOFORMALS,NOLOCALS)=
! GENERATE CODE FOR THE PROLOG OF FCN OR RTN. PUTS OUT THE "LUNDEWORD"
! FOR CO-ROUTINE STACK INFORMATION.
! FORMALS: DISPLAYP 1 --> FCN, 0 --> RTN
! NOFORMALS # OF FORMALS
! NOLOCALS # OF LOCALS (BODY OF ROUTINE NOT
! NECESSARILY A BLOCK)
! REVISION HISTORY :
!
! 6-2-77 ROUTINES GPROLOG AND GEPILOG ARE MODIFIED SO THAT LOCALS
! ARE ADDED AT ROUTINE ENTRY AND REMOVED AT ROUTINE
! EXIT.MAXLOCAL IS USED TO CONTROL THE TOTAL LOCALS NEEDED.
! NO LOCALS ARE ADDED OR DELETED AT BLOCK LEVEL.
! IF NO ROUTINES ARE IN A MODULE ,THEN
! IT WORKS AS A BLOCK AND ALLOCATES LOCALS(OLD METHOD).
! THIS IS THE ONLY CASE.COROUTINES,FUNCTIONS,ROUTINES
! ARE TREADED THE SAME IN LOCAL ALLOCATION.
!
! COMPUTES THE VALUE OF NOSAVREG (# OF REGS SAVED IN PROLOG) WHICH
! IS USED BY GEPILOG TO POP THE REGS. IN THE ROUTINE CASE IT OUTPUTS
! THE JSP TO ENTRY CODE ONLY IF THERE ARE LOCALS, FORMALS, OR REGS SAVED
BEGIN REGISTER I,T,S;
%5.200.29 ....% IF .ST[.RFSTE,1]<PORTALSWF> THEN
BEGIN
! THE USAGE "PORTAL ROUTINE ....." IS INTERPRETTED
! TO MEAN A GLOBAL ROUTINE WHOSE FIRST INSTRUCTION
! IS THE "PORTAL" INSTRUCTION, "JRST 01,.+1"
TEMPLATE(1,PORTALC,2);
ACPDT();
PUSHCODE();
CODE(JRST,1, CTRELOC^30+LOCATE(PORTALC,2) ,0);
! CTRELOC IS THE RIGHT RELOCATION FOR A LABEL
ACPR2();
CLASSLAB();
UNTEMPLATE()
% .... 5.200.29% END;
IF .TTFLAG THEN TIMEIN();
IF .LUNDEFLG THEN
(I_CT[NEWBOT(.CODEPTR,1),1]; (.I-1)<RELOCF>_LUNDERELOC);
IF .DEBFLG THEN DEBIN(.RFSTE);
IF .DISPLAYP THEN
BEGIN
CODE(PUSH,.SREG,.FREG,0);
INCR I FROM 1 TO .FUNCTIONLEVEL DO
CODE(PUSH,.SREG,.FREG^18 OR .I,0);
CODE(HRRZ,.FREG,.SREG,0);
IF .FUNCTIONLEVEL NEQ 0 THEN
CODE(SUBI,.FREG,.FUNCTIONLEVEL,0);
CODE(PUSH,.SREG,.FREG,0);
NOSAVREG_0;
NOLOCALS_.NOLOCALS+.NOSVR;
INCR I FROM 0 TO 15 DO
IF .REGUSE^(-.I) THEN
BEGIN
CODE(MOVEM,.I,
(.FUNCTIONLEVEL+.DISPLAYP+.NOSAVREG+1) OR .FREG^18,0);
NOSAVREG_.NOSAVREG+1
END;
MAXLOCAL_.MAXLOCAL-1; %1-JUN-77%
CODE(ADD,.SREG,LITA(LITLEXEME((.NOLOCALS + .MAXLOCAL)*(1^18 OR 1))),0);
%1-JUN-77%
NOPSAV_.NOPSAV+.NOSAVREG; !TEMP STAT PATCH
END
ELSE
BEGIN
LOCAL LASTONE;
NOSAVREG_0;
LASTONE_(INCR I FROM -15 TO 0 DO
IF NOT .MODREGM^.I THEN
IF .REGUSE^.I THEN NOSAVREG_.NOSAVREG+1
ELSE EXITLOOP .I);
REGUSE_.REGUSE<0,-.LASTONE>;
MAXLOCAL_.MAXLOCAL - (.NOSVR-.NOSAVREG+2);
IF ((.MAXLOCAL+.NOFORMALS+.NOSAVREG+.REGUSE) NEQ 0) OR .LUNDEFLG OR .FFFLAG
%5.200.28% THEN
%5.200.28% ( IF ( IF .ST[.RFSTE,1]<LINKAGESTF> NEQ 0
%5.200.28% THEN RLINKAGE(.RFSTE,.NOSAVREG,0)
%5.200.28% ELSE 1)
THEN CODE(JSP,.JSPREG,GMA(.RENTLEX[.NOSAVREG]),0))
%5.200.28% ELSE
%5.200.28% (IF .ST[.RFSTE,1]<LINKAGESTF> NEQ 0
%5.200.28% THEN RLINKAGE(.RFSTE,0,0));
IF .REGUSE NEQ 0 THEN INCR I FROM .LASTONE TO 0 DO
IF .REGUSE^.I THEN
(MAXLOCAL_.MAXLOCAL+1; NOSAVREG_.NOSAVREG+1;
CODE(PUSH,.SREG,-.I,0));
IF (.NOLOCALS + .MAXLOCAL - .NOSAVREG) NEQ 0
THEN CODE(ADD,.SREG,LITA(LITLEXEME((.NOLOCALS + .MAXLOCAL - .NOSAVREG)*(1^18+1))),0)
%1-JUN-77%
END;
IF .LUNDEFLG THEN
BEGIN
S_2+(IF .DISPLAYP THEN .FUNCTIONLEVL+1+.NOSVR ELSE .NOSAVREG);
T_IF .MAXLOCAL NEQ 0 THEN .S+1 ELSE 0;
.I_(.T AND 1^9-1)^27 OR ((.NOFORMALS) AND 1^9-1)^18 OR
((IF (S_.S+(.MAXLOCAL+.NOFORMALS)) EQL 2 THEN 1 ELSE .S) AND 1^18-1)
END
END;
GLOBAL ROUTINE GEPILOG(RFSTE,DISPLAYP,NOFORMALS,NOLOCALS)=
! GENERATE CODE FOR EPILOG OF FCN (DISPLAYP=1) OR ROUTINE.
BEGIN LOCAL SAVOFFSET,SUBAMOUNT;
IF .TTFLAG THEN TIMEOUT();
IF .DEBFLG THEN DEBOUT(.RFSTE);
SUBAMOUNT_
IF .DISPLAYP THEN .NOLOCALS+.NOSVR+.FUNCTIONLEVEL+1 ELSE 0;
SAVOFFSET_0;
IF .SUBAMOUNT NEQ 0 THEN
BEGIN
INCR I FROM 0 TO 15 DO
IF .REGUSE^(-.I) THEN
BEGIN
CODE(MOVE,.I,
(.FUNCTIONLEVEL+.DISPLAYP+.SAVOFFSET+1) OR .FREG^18,0);
SAVOFFSET_.SAVOFFSET+1
END;
IF NOT .DISPLAYP THEN SUBAMOUNT_.SUBAMOUNT+.SAVOFFSET;
CODE(SUB,.SREG,LITA(LITLEXEME((.SUBAMOUNT + .MAXLOCAL)*(1^18 OR 1))),0);
%1-JUN-77%
CODE(POP,.SREG,.FREG,0);
CODE(POPJ,.SREG,0,0);
END
ELSE
BEGIN
%1-JUN-77%
IF .NOLOCALS + .MAXLOCAL - .NOSAVREG NEQ 0
THEN CODE(SUB,.SREG,LITA(LITLEXEME((.NOLOCALS + .MAXLOCAL - .NOSAVREG)*(1^18+1))),0)
! 5.200.3 TO INSERT THE SUB 0 INSTRUCTION WHEN DEBUGGING
ELSE IF .DEBFLG THEN CODE(SUB,.SREG,LITA(LITLEXEME(0)),0);
IF ((.MAXLOCAL+.NOFORMALS+.NOSAVREG) EQL 0) AND NOT .LUNDEFLG AND NOT .FFFLAG
%5.200.28% THEN
%5.200.28% (IF ( IF .ST[.RFSTE,1]<LINKAGESTF> NEQ 0
%5.200.28% THEN RLINKAGE(.RFSTE,0,1)
%5.200.28% ELSE 1)
THEN CODE(POPJ,.SREG,0,0))
ELSE BEGIN LOCAL CONTIGIND;
CONTIGIND_.NOSAVREG;
IF .REGUSE NEQ 0 THEN INCR I FROM 0 TO 15 DO
(IF .REGUSE THEN (CODE(POP,.SREG,.I,0);
CONTIGIND_.CONTIGIND-1);
REGUSE_.REGUSE^(-1));
%5.200.28% IF ( IF .ST[.RFSTE,1]<LINKAGESTF> NEQ 0
%5.200.28% THEN RLINKAGE(.RFSTE,.CONTIGIND,1)
%5.200.28% ELSE 1)
%5.200.28% THEN
CODE(JRST,0,GMA(.RXITLEX[.CONTIGIND]),0)
END
END;
END;
GLOBAL ROUTINE GFRC2(P,F,M)=
%P IS LAST(IF ANY) PARAMETER, F IS ROUTINE(FUNCTION) NAME, AND
M IS THE NUMBER OF PARAMETERS. RETURNS LEXEME FOR VALUE REGISTER.%
BEGIN
REGSEARCH(P,0);
IF .M NEQ 0 THEN
BEGIN
PCIVR(.P,0);
CODE(PUSH,.SREG,MEMORYA(.P),0);
SAVREG(.F);
CODE(PUSHJ,.SREG,GMA(GAT(.F)),0);
CODE(SUB,.SREG,LITA(LITLEXEME(.M*#1000001)),0)
END
ELSE
BEGIN
SAVREG(.F);
CODE(PUSHJ,.SREG,GMA(GAT(.F)),0);
%5.200.3% IF .DEBFLG THEN CODE(SUB,.SREG,LITA(LITLEXEME(0)),0)
END;
CLEARSOME();
SESTOG_.SESTOG OR 4;
GETVREG()
END;
%5.200.28% ROUTINE RLINKAGE(RLSTE,RLNSVR,N)=
BEGIN
! N=0 FOR PROLOG, =1 FOR EPILOG
! RETURN 0 FOR SUCCESS, 1 FOR FAILURE (AND NORMAL ENTXIT)
! RLSTE IS INDEX OF ROUTINE'S STE
! RLNSVR IS NUMBER OF REGISTERS TO BE SAVED HERE
LOCAL J,K,L;
J_.ST[.RLSTE,1]<LINKAGESTF>;
J_.ST[.J,1]<STEF>+(2*.N); % ADDRESS OF FIRST OR SECOND STRING %
ACCUM_.ST[.J,0];
(ACCUM+1)_-2;
! TRUNCATE AT 4 CHARACTERS IF NECESSARY AND APPEND ".N"
K_".0"+.RLNSVR;
IF .ACCUM<8,7> EQL #177
THEN ( IF .ACCUM<15,7> EQL #177
THEN ( IF .ACCUM<22,7> EQL #177
THEN ( IF .ACCUM<29,7> EQL #177
THEN RETURN 1
ELSE ACCUM<0,29>_(.K)^15+#77776)
ELSE ACCUM<0,22>_(.K)^8+#376)
ELSE ACCUM<0,15>_(.K)^1+1)
ELSE (ACCUM<1,7>_".";(ACCUM+1)<29,7>_.K);
! MUST BE EXTERNAL
J_SEARCH();
IF .ST[.J,0]<TYPEF> NEQ EXTRNT
THEN ( IF .ST[.J,0]<BLF> EQL .BLOCKLEVEL
THEN ( IF .ST[.J,0]<TYPEF> EQL UNDEDT
THEN (ST[.J,0]<TYPEF>_EXTRNT;
ST[.J,1]_#777777)
ELSE RETURN 1)
ELSE J_DECSYQ(.J,EXTRNT,#777777));
! MAKE LEXEME, FOLLOWING LIINIT (LD3/1316)
L_DOTM+ZERO36+LSM+.J;
!EMIT THE APPROPRIATE CODE
IF .N THEN CODE(JRST,0,GMA(.L),0)
ELSE CODE(JSP,.JSPREG,GMA(.L),0);
0 !SUCCESS
END;
!END OF H2CNTR.BLI