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decus/20-0078/rts/simmc2.mac
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CUNIV SIMMC2 ;[104]
;AUTHOR: STEFAN ARNBORG
;VERSION: 1
;PURPOSE: PROVIDES PASS 2 GLOBAL SYMBOLS AND MACROS
;CONTENTS: DEFINITION OF GLOBAL RUNTIME SYMBOLS,
; PASS 2 UUO:S
; TAG FIELD VALUES
; GLOBAL ACCUMULATORS IN PASS 2
; AND ALL PASS 2 FIELDS AND RECORDS
IF1,<END>
PRINTX UPDATE: 19 18-Mar-77/LE
; CODE GENERATION ROUTINES
DEFINE CGINIT=<
DEFINE GPUSHJ(A)<
IFNDEF A'$,<SETZM YLXIAC>
L [PUSHJ XPDP,A]
IFGE <A-400K>,<GENABS
>
IFL <A-400K>,<GENFIX
>
>
DEFINE GJRST(A)<
SETZM YLXIAC
L [JSP A]
IFGE <A-400K>,<GENABS
>
IFL <A-400K>,<GENFIX
>
>
;--- OPDEF'S
IFDEF O2GWD,<OPDEF GENDW [PUSHJ XPDP,O2GWD]> ;;OUTPUT DOUBLE WORD CONSTANT IN X0-X1
OPDEF GENOP [PUSHJ XPDP,O2GI] ;;OUTPUT INSTRUCTION FROM YO2ADI AND YOPCOD(PREPARED BY O2AD)
OPDEF GETAD [PUSHJ XPDP,O2AD] ;;PREPARE ADDRESS FIELD FOR ZQU POINTED TO BY X1
OPDEF MEMOP [PUSHJ XPDP,CGMO] ;; SKIP IF XP1 POINTS TO DIRECTLY ADDRESSABLE (ZNO) OPERAND
OPDEF IFMEMO [PUSHJ XPDP,CGMO1] ;;REVERSE TO MEMOP
DEFINE CONST <WHENNOT XP1,ZCN>
OPDEF IMMOP [PUSHJ XPDP,CGIM] ;;SKIP IF XP1 POINTS TO ZCN NODE WHICH IS IMMEDIATE OPERAND
OPDEF IFIMMO [PUSHJ XPDP,CGIM1] ;;REVERSE TO IMMOP
OPDEF COMPVAL [PUSHJ XPDP,CGVA]
OPDEF COMPAD [PUSHJ XPDP,CGAD]
OPDEF COMPCA [PUSHJ XPDP,CGCA]
OPDEF COMPCC [PUSHJ XPDP,CGCC]
OPDEF COMPCO [PUSHJ XPDP,CGCO]
OPDEF CLFIX [PUSHJ XPDP,O2CF] ;;CLEAR FIXUP FOR REUSE
OPDEF DEFIX [PUSHJ XPDP,O2DF] ;;DEFINE FIXUP
OPDEF DISPLAY [PUSHJ XPDP,CADS]
OPDEF GENABS [PUSHJ XPDP,O2GA] ;;GENERATE ABSOLUTE INSTRUCTION
OPDEF GENFIX [PUSHJ XPDP,O2GF] ;;GENERATE FIXUP TYPE INSTRUCTION
OPDEF GENREL [PUSHJ XPDP,O2GR] ;;GENERATE RELOCATED INSTRUCTION
IFDEF CGRD,<
OPDEF GENRLD [PUSHJ XPDP,CGRD]> ;;GENERATE WORD RELOCATED TO CODE STREAM
OPDEF GENWRD [PUSHJ XPDP,O2GW] ;;GENERATE ONE-WORD CONSTANT
OPDEF INVAL [PUSHJ XPDP,O2IV] ;;INPUT (18-BIT) VALUE TO X0 FROM IC1
DEFINE NEXTOP=<STEP XP1,ZNO>
OPDEF NEXT [POPJ XPDP,]
OPDEF OP [HRLI] ;;GET INSTR LEFT HALFWORD FROM
;;IMMEDIATE OPERAND (IN PARENTHESES)
OPDEF OPZ [HRLZI] ;;AS OP, BUT CLEAR RIGHT HALF (ADDRESS FIELD)
OPDEF GETAC2 [PUSHJ XPDP,CGG2]
OPDEF GETAC3 [PUSHJ XPDP,CGG3]
OPDEF GETAC4 [PUSHJ XPDP,CGG4]
OPDEF RELAC2 [PUSHJ XPDP,CGR2]
OPDEF RELAC3 [PUSHJ XPDP,CGR3]
OPDEF RELAC4 [PUSHJ XPDP,CGR4]
OPDEF ACFIELD [POINT 4,0,12]
OPDEF INDEXFIELD [POINT 4,0,17] ;; USED FOR CONSTRUCTING GENERATED INSTRUCTIONS
OPDEF LONG [PUSHJ XPDP,CGLO] ; SKIP IF X1 POINTS TO ZNO FOR LONG (TWO AC:S) QUANT
OPDEF IFLONG [PUSHJ XPDP,CGLO1] ; OPPOSITE TO LONG
>
; ROUTINE FOR OUTPUT TO ATR.TMP
DEFINE PUTATR(ACC)<
SOSGE YBHATR+2
EXEC O2ATR
IDPB ACC,YBHATR+1
>
SUBTTL SWITCH DECLARATIONS
; COMPILER SWITCH SWITCHES
; ========================
EXTERNAL YSWITCH
DSW (YSWC,YSWITCH,35)
DSW (YSWD,YSWITCH,34)
DSW (YSWI,YSWITCH,33)
DSW (YSWR,YSWITCH,32)
DSW (YSWY,YSWITCH,31)
DSW (YSWA,YSWITCH,30)
DSW (YSWM,YSWITCH,29)
DSW (YSWQ,YSWITCH,28)
DSW (YSWW,YSWITCH,27)
; SWITCHES FOR COMPILE
EXTERNAL YLINK
DSW (SVALUE,YLINK,0)
DSW (SADDRE,YLINK,1)
DSW (SCADDR,YLINK,2)
DSW (SCCOND,YLINK,3)
DSW (SCONDI,YLINK,4)
DSW (SCGSKP,YLINK,5)
; DEBUG SWITCHES
;[247] Same definitions, dummy globals for production version
EXTERN YCGDB,YM2DB,YO2DB
DSW (SCGDB1,YCGDB,1)
DSW (SCGDB2,YCGDB,2)
DSW (SCGDB3,YCGDB,3)
DSW (SM2DB1,YM2DB,1)
DSW (SM2DB3,YM2DB,2)
DSW (SM2DB3,YM2DB,3)
DSW (SO2D1,YO2DB,34)
DSW (SO2D2,YO2DB,33)
DSW (SO2D3,YO2DB,32)
DSW (SO2D4,YO2DB,31)
DSW (SCADB5,YCADB,32)
; MASKS FOR A,M,Q AND W
; THESE MASKS ARE USED AS OPERANDS TO THE $OPT OPERATOR IN IC1
QSWA==1B30
QSWM==1B29
QSWQ==1B28
QSWW==1B27
; MACROS FOR ERROR MESSAGES
;
; OPERANDS:
; OP EFFECTIVE ADDRESS GIVING THE LEXICAL ID OF AN IDENTIFIER OR OPERATOR
; TO BE EDITED INTO THE MESSAGE. USUALLY ACTUAL PARAMETER IS (XCUR).
; NO DECIMAL MESSAGE NUMBER (THREE NUMBER SERIES FOR PASS2 WARNING, ERROR, AND FATAL MESSAGE, RESPECTIVELY)
; MESS TEXT TO BE DUMPED WHEN THE MACRO IS EXECUTED IN THE TEST VERSION,
; AND A COMMENT IN THE PRODUCTION VERSION
DEFINE WARNING(NO,MESS)=<
WARN NO
IFN QDEBUG,<NOP [ASCIZ/MESS/]
>>
DEFINE ERROR1(NO,OP,MESS)=<
IFG <^D'NO>,<
IFL <^D'NO-20>,<
ERRR ^D'NO,OP>
IFGE <^D'NO-20>,<
IFL <^D'NO-40>,<
ERR1<^D'NO-20>,OP>
IFGE <^D'NO-40>,<CFAIL TOO LARGE ERROR CODE IN ERROR1>
>
>
IFL <^D'NO>,<CFAIL NEGATIVE ERROR CODE IN ERROR1>
IFN QDEBUG,<NOP [ASCIZ/MESS/]
>>
DEFINE ERROR2(NO,MESS)=<
ERR2 ^D'NO
IFN QDEBUG,<NOP [ASCIZ/MESS/]
>>
DEFINE FATAL(NO,MESS)=<
FATA ^D'NO
IFN QDEBUG,<NOP [ASCIZ/MESS/]>
>
DEFINE SEVER1(NO,OP,MESS)=<
IFG <^D'NO>,<
IFL <^D'NO-20>,<
SEV ^D'NO,OP>
IFGE <^D'NO-20>,<
IFL <^D'NO-40>,<
SEV1 <^D'NO>,OP>
IFGE <^D'NO-40>,<CFAIL HIGH CODE NO TO SEVER1>
>
>
IFL <^D'NO>,<CFAIL NEGATIVE NO TO SEVER1>
IFN QDEBUG,<NOP [ASCIZ/MESS/]
>>
DEFINE SEVER2(NO,MESS)=<
SEV2 <<^D'NO>B24>
IFN QDEBUG,<NOP [ASCIZ/MESS/]
>>
; USEFUL CONSTANTS
; FIXUP STATUS CODES
SCALAR <QA,QB,QC,QD,QE1,QF,QG>
; EXPRESSION TREE AND OPERAND STACK NODE TAG VALUES
SCALAR <QZOS,QZLI,QZCN,QZID,QZNS,QZNN>
; EXPRESSION NODE ZNNCOD VALUES
SCALAR<QCODCA,QCODAR,QCODVA,QCODAA,QCODRA>
; OPERAND CHECKING ROUTINE CODES
SCALAR <Q,QCSAME,QCLEFT,QCHIGH,QCREAL,QCINT>
SCALAR <Q,QRCLAS,QRBOOL,QRLAST,QRSAME>
SCALAR <Q,Q,Q,Q,Q,Q,Q,Q,Q,Q,QARITH,QTXREF,QNREF,QNRFBO,QFTREF>
;
; REGISTERS(ACCUMULATORS) USED GLOBALLY IN PASS 2
XCUR==10
XV1==11
XV2==12
XP1==13
XP2=14
XL1=15
XL2=16
XZHE= X7
DSW SCERFL,YCERFL,36
EXTERN YCERFL,YM2DB
; DEFINITIONS OF PASS 2 FIELDS
; DICTIONARY AND REDECLARATION STACK ENTRY
DF ZDCZDC,0,18,17
DF ZDCZQU,0,18,35
; BLOCK STACK ENTRIES
DF ZBSZDC,0,18,17
DF ZBSZHE,0,18,35
; FIXUP TABLE ENTRY
DF ZFXTYP,0,9,8
DF ZFXCOD,0,9,17
DF ZFXVAL,0,18,35
; OPERAND STACK AND EXPRESSION TREE NODES
DF ZNOTER,0,1,0
DF ZNOLST,0,1,1
DF ZNOTYP,0,4,5
DF ZOSLB,0,1,35
; CONSTANT OPERAND
DF ZCNTYP,0,4,11
DF ZCNVAL,1,36,35
; IDENTIFIER OPERAND
DF ZLILID,0,18,35
; SEMANTIC IDENTIFIER
DF ZIDINB,0,1,6
DF ZIDSYS,0,1,7
DF ZIDTYP,0,4,11
DF ZIDMOD,0,3,14
DF ZIDKND,0,3,17
DF ZIDZHE,0,18,35
DF ZIDZQU,1,18,35
DF ZIDZDE,1,18,17
; EXPRESSION NONTERMINAL NODE
DF ZNSTYP,0,4,11
DF ZNSMOD,0,3,14
DF ZNSKND,0,3,17
DF ZNSZNO,0,18,35
DF ZNSZQU,1,18,17
DF ZNSROR,1,1,18
DF ZNSSEF,1,1,19
DF ZNSLEV,1,4,23
DF ZNSGEN,1,12,35
; COMPILED RESULT DESCRIPTION
DF ZNNTYP,0,4,11
DF ZNNMOD,0,3,14
DF ZNNKND,0,3,17
DF ZNNZNO,0,18,35
DF ZNNZQU,1,18,35
DF ZNNCOD,1,18,17
; RELOCATION CODE BITS IN IC2 RECORD
DF ZQREL,0,3,2 ; RELOC IN LEFT HALFWORD
DF ZQRER,0,3,20 ; RELOC IN RIGHT HALF
; PASS 2 RECORDS
DR ZDC,1
DR ZBS,1
DR ZFX,1
DR ZNO,2
DR ZMP,4,ZDETYP,0 ; THIS ONE IS DEFINED WITHOUT TAG FIELD IN MCR.MAC
DR ZCN,2,ZNOTYP,QZCN
DR ZLI,2,ZNOTYP,QZLI
DR ZOS,2,ZNOTYP,QZOS
DR ZID,2,ZNOTYP,QZID
DR ZNS,2,ZNOTYP,QZNS
DR ZNN,2,ZNOTYP,QZNN
;RECORD DISCRIMINATION MACROS
DEFINE RECTYPE(XB,O)<
$%REC==XB
$%O=0
IFNB <O>,<$%O==O>
>
DEFINE IS(ZR)<
IFG $%REC-17,<CFAIL ILLEGAL IS>
LF() ZR'%F($%REC,$%O)
CAIE ZR'%V
$%REC==77
>
$%REC==77 ;INITIAL VALUE
END