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Digital-Research-Source-Code/ASSEMBLY & COMPILE TOOLS/PLM VAX COMPILER/plmvax/plm.for
Sepp J Morris 31738079c4 Upload 
Digital Research
2020-11-06 18:50:37 +01:00

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C***********************************************************************
C
C PLM.FOR
C
C D I S C L A I M E R N O T I C E
C ------------------- -----------
C
C This document and/or portions of the material and data furnished
C herewith, was developed under sponsorship of the U. S. Government.
C Neither the U.S. nor the U.S.D.O.E., nor the Leland Stanford Junior
C University, nor their employees, nor their respective contractors,
C subcontractors, or their employees, makes any warranty, express or
C implied, or assumes any liability or responsibility for accuracy,
C completeness or usefulness of any information, apparatus, product
C or process disclosed, or represents that its use will not infringe
C privately-owned rights. Mention of any product, its manufacturer,
C or suppliers shall not, nor is it intended to, imply approval, dis-
C approval, or fitness for any particular use. The U. S. and the
C University at all times retain the right to use and disseminate same
C for any purpose whatsoever. Such distribution shall be made by the
C National Energy Software Center at the Argonne National Laboratory
C and only subject to the distributee furnishing satisfactory proof
C that he has a valid license from the Intel Corporation in effect.
C
C
C-----------------------------------------------------------------------
C
C This is the main module for the PL/M-VAX compiler. Default values
C for controls are established, the invocation line is processed, a
C compilation is performed, and the MACRO assembler is chained to
C (if required).
C
C-----------------------------------------------------------------------
C
C R E V I S I O N H I S T O R Y
C
C VERSION 3.5 29APR81 AFH FOR MODEL=1 (SMALL) ASSUME D.=0,
C AND MAKE APPROPRIATE SIMPLIFICATIONS.
C
C VERSION 3.6 30APR81 AFH IMPLEMENT PROCEDURE EXECUTION FREQUENCY
C COUNTS
C
C VERSION 3.7 08MAY81 AFH FIXED BUG IN CONTROL_LINE PROCEDURE
C WHICH COULD SOMETIMES CAUSE A CONTROL
C LINE TO BE IGNORED. ALSO, CHECK
C SKIP_STATE AT END OF COMPILATION TO
C DETECT UNCLOSED CONDITIONAL COMPILATION
C BLOCKS.
C
C VERSION 3.8 14MAY81 AFH 1. Special handling for DO WHILE <const>
C (eliminates some spurious PATH warnings).
C 2. Fix invocation line bug introduced in
C version 3.7.
C 3. Allow spurious trailing comma in
C initialization list (for compatibility
C with PLM86).
C 4. Put runtime statistics at end of listing.
C 5. Fix node_type(reg) bug in SOMEWHERE.
C 6. Set attributes of all symbols in a
C factored declaration before processing
C the initialization list (in case list
C contains restricted location refs to
C any elements in the current declaration).
C
C VERSION 3.9 AFH 15MAY81 1. Add STACK,STACKTOP,STACKPTR builtins.
C 2. Change default extent for PUBLICS to PBL.
C 3. Fix line #'s for unsequenced INCLUDE
C files.
C
C VERSION 4.0 AFH 28MAY81 (FIRST RELEASE TO INTEL.)
C 1. No traceback on FATAL error or BUG.
C 2. Fix 'input file not found' message
C to come out on terminal.
C 3. Try to type offending source line
C along with error message to terminal.
C
C VERSION 4.1 AFH 14JUN81 1. Increase string space to 32K bytes.
C 2. Don't allow procedure as LHS of
C assignment statement.
C
C VERSION 4.2 AFH 22JUN81 1. Temporary fix to allow dimensions>32K.
C
C VERSION 4.3 AFH 23JUN81 (SECOND RELEASE TO INTEL.)
C 1. Fix LAST,LENGTH,SIZE for dimension>32K.
C 2. Generate in-line code for the following
C built-ins:
C DOUBLE,LOW,FLOAT,FIX,INT,SIGNED,
C UNSIGN.
C
C VERSION 4.4 AFH 23JUN81 (THIRD RELEASE TO INTEL.)
C 1. Allow AT(@external+offset).
C
C VERSION 4.5 AFH 05JUL81 1. Implement ACALLS control.
C 2. Only two models (LARGE & SMALL),
C so make some simplifications.
C 3. Change FIND* library routine names
C to the unified versions.
C 4. Change most D.'s to 0's.
C 5. Generate 'MCOMB #0' instead of
C 'MNEGB #1' for aesthetic reasons.
C 6. Generate word-displacement addressing
C for SMALL-model constants.
C (Modules affected: PLMCOM, PLM, CONTROL,
C PROCS, BASICS, LOCALS, MODULES, INIT,
C EMIT, FOLD, GENCODE, OPERAND.)
C
C VERSION 4.6 AFH 05JUL81 1. Allow %forward references in restricted
C location references.
C 2. Add ALIGN, FREQUENCIES, ACALLS to
C summary tail.
C
C VERSION 4.7 AFH 16JUL81 1. Correct bug introduced by 4.5(6.).
C (addressing was wrong for SMALL model
C non-overlay module constants).
C (Modules affected: PLM, OPERAND.)
C
C VERSION 4.8 AFH 29JUL81 1. Add FRAME$PTR builtin.
C (Modules affected: PLM, INIT, BUILTINS.)
C
C VERSION 4.9 AFH 18AUG81 (FIFTH RELEASE TO INTEL.)
C 1. Fold the special case of
C symbol(const).member(const) where
C element_size(symbol).ne.0
C (modulo element_size(member)).
C 2. Increase max number of globals to 800.
C 3. Fix bug in EXTRACT_DISPLACEMENT
C (downward/upward coercions are not
C transitive).
C 4. Change names of all out-of-line builtins
C to the unified versions.
C (Modules affected: PLM,PLMCOM,FOLD,INIT.)
C
C VERSION 5.0 AFH 19AUG81 1. Support COMPACT and MEDIUM models as
C well as SMALL and LARGE.
C 2. Implement VECTOR control in place of
C ACALLS control.
C (Modules affected: PLM,PLMCOM,SOMEWHERE,
C CONTROL,OPERAND,SUMMARY,UNIQUE,PROCS,
C BASICS,REGS,MODULES,EXPRS,INIT,EMIT,UNITS.)
C
C VERSION 5.1 AFH 08SEP81 1. Compute reference counts (resolves
C semantic ambiguity of multiple assign-
C ment statements in favor of PL/M-86
C interpretation.
C (Modules affected: PLM,SOMEWHERE,BASICS,
C MASSAGE,COUNTS.)
C
C VERSION 5.2 AFH 13SEP81 1. Implement the ALIGN control.
C (Modules affected: PLM,MODULES,DECLS.)
C
C VERSION 5.3 AFH 29SEP81 1. Fix CRC-0 bug on reference to STACK$PTR.
C 2. Correct choice of SP for STACK$PTR.
C 3. Increase symbol table to 2000 entries.
C 4. Allow DATA attribute with EXTERNAL.
C 5. Allow dimensions >64K.
C 6. Allow structure member arrays to have
C explicit lower bounds.
C 7. Implement the builtin function FIRST.
C 8. Support the AT(@external.member)
C construct.
C 9. Increase max string size to 290 chars
C (for larger LITERALLY's).
C (Modules changed: PLMCOM,PLM,COUNTS,
C BUILTINS,SYMTAB,DATA,DECLS,EMIT,REPLICA,
C INIT,GETLEX. All modules were recompiled
C because of changes to PLMCOM.)
C
C VERSION 5.4 AFH 15OCT81 1. Experimental version to try out
C reference count stuff.
C (Modules changed: PLM,COUNTS,SOMEWHERE,
C REGS.)
C
C VERSION 5.5 AFH 21OCT81 1. Add basic block analysis.
C 2. Implement %_signed and %_unsigned
C builtins.
C
C VERSION 5.6 AFH 23OCT81 1. More peephole optimizations.
C 2. Add OP_BB operator.
C 3. No reference counts for OP_LOC
C and OP_ASSN.
C
C VERSION 5.7 AFH 28OCT81 1. Add definitions for SELECTOR, DWORD,
C SHORT, and BOOLEAN data types.
C 2. Allow keywords to be re-declared.
C
C VERSION 5.8 AFH 06NOV81 1. Add ASSUME control.
C
C VERSION 5.9 AFH 09NOV81 1. Implement CSE,CTE,BBA,MCO assumptions.
C
C VERSION 6.0 AFH 10NOV81 1. Add EFFECTS module.
C 2. Add DBG assumption.
C 3. Fix DRC bug in SCOPES.
C 4. Implement EEQ,BRO,SWB assumptions.
C
C VERSION 6.1 AFH 12NOV81 1. Restore argument pointer display in
C transfer vector prologue.
C 2. Change psect names, and add the
C symbol_psect field to the symbol
C table.
C 3. Make ATOM_DISP be I*4. (All modules
C must be recompiled.)
C 4. Implement LAST(MEMORY), etc.
C 5. Allow structure arrays to be implicitly
C dimensioned.
C 6. Implement AT(arg) and AT(dynamic).
C
C VERSION 6.2 AFH 14NOV81 1. Change addressing modes to reflect
C new psect usage.
C
C VERSION 6.3 AFH 21NOV81 1. Temporarily change LOW back to an
C external to correct a bug with
C extract_displacement.
C
C VERSION 6.4 AFH 10JAN82 1. Change DOUBLE keyword to DOUBLE$-
C PRECISION to avoid conflict with
C the DOUBLE builtin.
C 2. Set VMS delimiter set in CONTROL.
C
C VERSION 6.5 AFH 14JAN82 1. Change ASSUME_S32 to ASSUME_S64.
C 2. Ignore $-signs in switch names.
C 3. Make <keyword>: and GOTO <keyword>
C work correctly.
C
C VERSION 6.6 AFH 03FEB82 1. Fix bug for immediate operands
C under LARGE model (OPERAND).
C 2. Change name of GET_CNTRL_FLD.
C
C VERSION 6.7 AFH 08FEB82 1. Merge ARG opnodes.
C 2. Change opcode column in emitted code
C to allow longer emitted code lines.
C
C***********************************************************************
PROGRAM PLM
INCLUDE 'PLMCOM.FOR/NOLIST'
CHARACTER*45 FILE1_CHARS,FILE2_CHARS,FILE3_CHARS
VERSION=6.7
IN=8
OUT=4
LST=6
IXI=3
FIFO_DEPTH=0
LIST_LINE_NO=0
LIST_STNO=1
LIST_BLOCK_LEVEL=0
LINE_OF_PAGE=1
PAGE_NO=0
LINES_READ=0
ERRORS=0
WARNINGS=0
PREVIOUS_STNO=0
EXTERNAL_SERIAL_DELTA=0
BASED_SERIAL_DELTA=0
SUBSCRIPTED_SERIAL_DELTA=0
OVERLAID_SERIAL_DELTA=0
PATH=.FALSE.
BASIC_BLOCK=NULL
CALL BREAK
C------- SET DEFAULT VALUES OF PRIMARY CONTROLS.
LARGE=.FALSE.
PAGELENGTH=LIB$LP_LINES()-5
PAGEWIDTH=120
OPTIMIZE=1
MODEL=1
PRINT_FLAG=.TRUE.
XREF_FLAG=.FALSE.
IXREF_FLAG=.FALSE.
SYMBOLS_FLAG=.FALSE.
PAGING_FLAG=.TRUE.
INTVECTOR_FLAG=.TRUE.
OBJECT_FLAG=.TRUE.
OPRINT_FLAG=.FALSE.
DEBUG_FLAG=.FALSE.
TYPE_FLAG=.TRUE.
ROM_FLAG=.FALSE.
TITLE_STRING(0)=0
TABS=8
WARN_FLAG=.TRUE.
PLM80_FLAG=.FALSE.
GLOBALS_FLAG=.FALSE.
PUBLICS_FLAG=.FALSE.
OVERLAY_FLAG=.FALSE.
ROOT_FLAG=.FALSE.
ALIGN_FLAG=.FALSE.
FREQ_FLAG=.FALSE.
VECTOR_FLAG=.FALSE.
CALL DATE(DATE_STRING(1))
DATE_STRING(10)=' '
CALL TIME(DATE_STRING(11))
DATE_STRING(0)=18
C------- SET DEFAULT VALUES OF GENERAL CONTROLS.
LEFTMARGIN=1
RIGHTMARGIN=200
LIST_FLAG=.TRUE.
NON_CONTROL_LINE_READ=.FALSE.
SKIP_STATE=0 ! READING INVOCATION LINE.
CODE_FLAG=.FALSE.
EJECT_FLAG=.TRUE.
OVERFLOW_FLAG=.FALSE.
COND_FLAG=.TRUE.
SUBTITLE_STRING(0)=0
C-------- SET DEFAULT VALUES OF ASSUMPTION FLAGS.
ASSUME_SCE=.TRUE.
ASSUME_CSE=.TRUE.
ASSUME_EEQ=.TRUE.
ASSUME_PSE=.TRUE.
ASSUME_BRO=.TRUE.
ASSUME_BBA=.TRUE.
ASSUME_CTE=.TRUE.
ASSUME_MCO=.TRUE.
ASSUME_CFA=.TRUE.
ASSUME_SWB=.TRUE.
ASSUME_OSR=.TRUE.
ASSUME_SVE=.TRUE.
ASSUME_S64=.TRUE.
ASSUME_C7F=.TRUE.
ASSUME_DBG=.FALSE.
C-------- PERFORM A COMPILATION.
CALL INVOCATION_LINE
SKIP_STATE=4 ! READING AT LEVEL 0.
CALL GETC
CALL GETLEX
CALL GETTOK
CALL COMPILATION
C-------- CHAIN TO MACRO IF OBJECT WANTED.
IF (OBJECT_FLAG) THEN
IF (OPRINT_FLAG) THEN
CALL LIB$DO_COMMAND(
# 'MAC/OBJ=' //
# FILE1_CHARS(:MAKE_CHARS(FILE1_CHARS,OBJECT_FILE_STRING))
# // '/LIS=' //
# FILE2_CHARS(:MAKE_CHARS(FILE2_CHARS,OPRINT_FILE_STRING))
# // ' ' //
# FILE3_CHARS(:MAKE_CHARS(FILE3_CHARS,WORK_FILE_STRING)))
ELSE
CALL LIB$DO_COMMAND(
# 'MAC/OBJ=' //
# FILE1_CHARS(:MAKE_CHARS(FILE1_CHARS,OBJECT_FILE_STRING))
# // '/NOLIS ' //
# FILE3_CHARS(:MAKE_CHARS(FILE3_CHARS,WORK_FILE_STRING)))
ENDIF
ENDIF
END
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