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Section 5
BSP$-Program File Basic Service
Package
The Basic Service Package (BSP$) provides an interface between the calling program
and the table of contents (TOC) of a program file.
The program file format is described in the Data Structures Programming Reference
Manual. The file table index (FTI) is the control part of the program file. Figure 5-1
contains a general description of the FTI. The FTI describes five tables that are accessed
by the BSP$ functions.
• Element table
• Assembler procedure table
• COBOL procedure table
• FORTRAN/PLUS procedure table
• Relocatable element entry point table
The part of the program file occupied by the five tables is called the TOC.
BSP$ performs the following functions:
• Reads the FTI into a buffer.
• Reads a selected program file table into a buffer.
• Searches a selected program file table for a specific entry.
• Deletes a specific entry in a program file table.
• Locates a program file table entry from its sequence number in the table.
• Changes a specific entry in a program file table.
• Adds an entry to a program file table.
• Writes the last entry referenced back to the file.
• Marks the last entry referenced in a program file table as having been updated.
• Writes a program file table back to the file.
• Writes the FTI back to the file.
Reading the FTI of a previously unwritten file changes that file to a program file. The
table is not written to the file until BSP$ writes the FTI.
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