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135 lines
5.1 KiB
Fortran
135 lines
5.1 KiB
Fortran
C***********************************************************************
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C
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C SYMTAB.FOR
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C
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C
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C D I S C L A I M E R N O T I C E
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C ------------------- -----------
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C
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C This document and/or portions of the material and data furnished
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C herewith, was developed under sponsorship of the U. S. Government.
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C Neither the U.S. nor the U.S.D.O.E., nor the Leland Stanford Junior
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C University, nor their employees, nor their respective contractors,
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C subcontractors, or their employees, makes any warranty, express or
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C implied, or assumes any liability or responsibility for accuracy,
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C completeness or usefulness of any information, apparatus, product
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C or process disclosed, or represents that its use will not infringe
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C privately-owned rights. Mention of any product, its manufacturer,
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C or suppliers shall not, nor is it intended to, imply approval, dis-
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C approval, or fitness for any particular use. The U. S. and the
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C University at all times retain the right to use and disseminate same
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C for any purpose whatsoever. Such distribution shall be made by the
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C National Energy Software Center at the Argonne National Laboratory
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C and only subject to the distributee furnishing satisfactory proof
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C that he has a valid license from the Intel Corporation in effect.
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C
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C
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C-----------------------------------------------------------------------
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C
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C This module of the PL/M-VAX compiler contains procedures to enter
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C and lookup identifiers in the symbol and member-symbol tables.
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C
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C-----------------------------------------------------------------------
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C
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C R E V I S I O N H I S T O R Y
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C
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C 29SEP81 Alex Hunter 1. Re-compiled with larger symbol table.
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C 21OCT81 Alex Hunter 1. Initialize serial no. fields. (V5.5)
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C 12NOV81 Alex Hunter 1. Initialize psect field. (V6.1)
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C
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C***********************************************************************
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SUBROUTINE ENTER_SYMBOL
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INCLUDE 'PLMCOM.FOR/NOLIST'
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CHARACTER*32 UNIQUE
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C
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H=HASH(IDENTIFIER)
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I=HASH_BUCKET(H)
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10 IF (I.GE.SYMBOL_TOP(BLOCK_LEVEL-1)+1) THEN
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IF (SYMBOL_PLM_ID(I).EQ.IDENTIFIER) THEN
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IF (SYMBOL_REF(I).EQ.S_ARG.AND.SYMBOL_FLAGS(I).EQ.S_UNDEF
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# .OR.SYMBOL_REF(I).EQ.S_FORWARD)
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# THEN
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SYMBOL_INDEX=I
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RETURN
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ENDIF
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CALL ERROR('DUPLICATE DECLARATION FOR '//IDENTIFIER)
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GO TO 20
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ENDIF
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I=SYMBOL_CHAIN(I)
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GO TO 10
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ENDIF
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20 SYMBOL_INDEX=SYMBOL_TOP(BLOCK_LEVEL)+1
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IF (SYMBOL_INDEX.GT.SYMBOL_MAX)
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# CALL FATAL('SYMBOL TABLE OVERFLOW')
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SYMBOL_TOP(BLOCK_LEVEL)=SYMBOL_INDEX
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SYMBOL_PLM_ID(SYMBOL_INDEX)=IDENTIFIER
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SYMBOL_VAX_ID(SYMBOL_INDEX)=UNIQUE(IDENTIFIER)
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SYMBOL_KIND(SYMBOL_INDEX)=0
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SYMBOL_TYPE(SYMBOL_INDEX)=0
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SYMBOL_NBR_ELEMENTS(SYMBOL_INDEX)=0
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SYMBOL_ELEMENT_SIZE(SYMBOL_INDEX)=0
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SYMBOL_LINK(SYMBOL_INDEX)=0
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SYMBOL_LIST_SIZE(SYMBOL_INDEX)=0
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SYMBOL_REF(SYMBOL_INDEX)=0
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SYMBOL_BASE(SYMBOL_INDEX)=0
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SYMBOL_BASE_MEMBER(SYMBOL_INDEX)=0
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SYMBOL_FLAGS(SYMBOL_INDEX)=S_UNDEF
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SYMBOL_DISP(SYMBOL_INDEX)=0
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SYMBOL_SERIAL_NO(SYMBOL_INDEX)=0
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SYMBOL_PSECT(SYMBOL_INDEX)=0
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SYMBOL_CHAIN(SYMBOL_INDEX)=HASH_BUCKET(H)
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HASH_BUCKET(H)=SYMBOL_INDEX
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RETURN
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C-------------------------------
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ENTRY LOOKUP_SYMBOL
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H=HASH(IDENTIFIER)
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SYMBOL_INDEX=HASH_BUCKET(H)
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30 IF (SYMBOL_INDEX.GT.0) THEN
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IF (SYMBOL_PLM_ID(SYMBOL_INDEX).EQ.IDENTIFIER) THEN
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IF ((SYMBOL_FLAGS(SYMBOL_INDEX).AND.S_UNDEF).NE.0) THEN
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CALL ERROR('NO DECLARATION FOR '//IDENTIFIER)
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ENDIF
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RETURN
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ENDIF
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SYMBOL_INDEX=SYMBOL_CHAIN(SYMBOL_INDEX)
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GO TO 30
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ENDIF
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CALL ERROR('UNDEFINED SYMBOL: '//IDENTIFIER)
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GO TO 20
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END
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C-----------------------------------------------------------------------
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SUBROUTINE ENTER_MEMBER
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INCLUDE 'PLMCOM.FOR/NOLIST'
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CHARACTER*32 UNIQUE
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C
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MEMBER_INDEX=MEMBER_TOP(BLOCK_LEVEL)+1
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IF (MEMBER_INDEX.GT.MEMBER_MAX)
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# CALL FATAL('MEMBER TABLE OVERFLOW')
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MEMBER_TOP(BLOCK_LEVEL)=MEMBER_INDEX
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MEMBER_PLM_ID(MEMBER_INDEX)=IDENTIFIER
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MEMBER_VAX_ID(MEMBER_INDEX)=UNIQUE(IDENTIFIER)
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MEMBER_KIND(MEMBER_INDEX)=0
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MEMBER_TYPE(MEMBER_INDEX)=0
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MEMBER_NBR_ELEMENTS(MEMBER_INDEX)=0
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MEMBER_ELEMENT_SIZE(MEMBER_INDEX)=0
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MEMBER_SERIAL_NO(MEMBER_INDEX)=0
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RETURN
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C-------- CHECK FOR DUPLICATE MEMBER NAMES!!! ------
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C
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C-------------------------------
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ENTRY LOOKUP_MEMBER
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IF (SYMBOL_TYPE(SYMBOL_INDEX).NE.S_STRUC) THEN
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CALL ERROR('NOT A STRUCTURE: '//
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# SYMBOL_PLM_ID(SYMBOL_INDEX))
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ELSE
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DO 20 MEMBER_INDEX=SYMBOL_LINK(SYMBOL_INDEX),
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# SYMBOL_LINK(SYMBOL_INDEX)+
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# SYMBOL_LIST_SIZE(SYMBOL_INDEX)-1
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IF (MEMBER_PLM_ID(MEMBER_INDEX).EQ.IDENTIFIER) RETURN
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20 CONTINUE
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CALL ERROR('UNDEFINED MEMBER: '//IDENTIFIER)
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ENDIF
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MEMBER_INDEX=0
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RETURN
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END
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