Type ASSEMBLE
Source Lines : 1,716
Fixes Applied : 12
Most Recent Version : Tuesday, December 12, 1978
Last Fix ID : [HRC006DS]
Function
TO INITIALIZE FOR AND TO PERFORM EACH LOADING OPERATION
BY PROCESSING TEXT FILES WHICH MAY CONTAIN THE
FOLLOWING CARDS: SLC, ICS, ESD, TXT, REP, RLD, END,
LDT, LIBRARY, AND ENTRY.
Attributes
REENTRANT, DCSS/MODULE RESIDENT
Operation
1. ACQUIRE AND INITIALIZE A WORK AREA (LDRST).
2. CALL DMSLIO TO SET UP LOADER I/O OPERATIONS.
3. IF TXTLIB DIRECTORIES ARE NOT IN FREE STORAGE,
CALL DMSLGTB TO BRING THEM IN.
4. CALL DMSLSBD TO PROCESS LOADER OPTION LIST.
5. PROCESS EACH TEXT FILE SEQUENTIALLY BY READING TEN
CARDS AT A TIME, THEN ANALYZING EACH OF THE CARDS
TO DETERMINE ITS TYPE. FOR EACH CARD, BRANCH TO
THE APPROPRIATE ROUTINE.
EACH ROUTINE WILL RETURN TO THIS READ
ROUTINE FOR THE NEXT CARD.
6. AT END-OF-FILE ON LAST TEXT FILE OR UPON FINDING
AN LDT CARD, BEGIN TXTLIB SEARCHING TO SATISFY ANY
UNDEFINED REFERENCES (DMSLIB). FOR EACH MATCH
DMSLIB WILL RETURN TO THE READ ROUTINE (IN STEP 5)
TO CONTINUE LOADING.
7. WHEN NO MORE MATCHES CAN BE MADE, SAVE SPECIFIED
STARTING ADDRESS, SAVE VALUE OF THE LOCATION
COUNTER, AND LIST ANY UNDEFINED ENTRIES AT THE
TERMINAL.
8. CLOSE TXTLIBS AND FREE THE WORK AREA
9. RETURN TO DMSSLN.
NOTE: ANY CHANGES MADE TO THIS MODULE SHOULD
ALSO BE CONSIDERED FOR DMSLDR.
Calls to Other Routines
DMSLSBA - FROM VARIOUS ROUTINES FOR HEX TO BINARY CONVERSION
DMSLSBC - FROM ICS ROUTINE TO DEFINE CSECT, FROM ESD
TYPE 1 TO DEFINE ENTRY
DMSLSY - FROM ESD PRIVATE CODE RTN.
DMSLGTB - TO SETUP TEMPORARY TXTLIB DICTIONARIES.
DMSLIO - FOR ERROR MESSAGES AND LOAD MAP PROCESSING
DMSLIB - TO SEARCH TEXT LIBRARIES FOR UNDEFINED ENTRY NAMES
DMSSLNDY - FROM ESD ROUTINE IF OS LINK OR LOAD WAS ISSUED
DMSSCN - FROM CTLCRD1 TO A TEXT FILE CARD
DMSSMNSB - TO INITIALIZE FREE STORAGE IF START.
DMSBRD - TO READ TEXT FILES AND TXTLIBS.
DMSFNS - TO CLOSE READING
DMSLSBB - FROM RLD ROUTINE TO ADD TO UNDEFINED STRINGS
DMSLSBD - TO PROCESS LOADER OPTIONS
DMSLGTA - TO FREE TXTLIB DIRECTIONS
DMSFREB - FOR FREE STORAGE