COBOL Manual for TNS/E Programs (H06.03+)

ManualsBrandsHP ManualsServerHP Integrity NonStop H-Series

1101

Issues Related to Linking

HP COBOL Manual for TNS/E Programs—520347-003

24-2

Code and Data Blocks

A compilation unit is a collection of source statements presented to a compiler in one

compilation. It contains one or more separately compiled programs.

For each compilation unit, the compiler produces a single object file. For each

separately compiled program in the compilation unit, the object file contains one

relocatable code block for the outermost source program, one relocatable code block

for each program nested inside the outermost source program, and one or more data

blocks. Each nest of programs produces an indivisible nest of code blocks. In the

object file, the code and data blocks exist solely as named code blocks and data

blocks; they do not have a collective identity.

These compilers also produce one object file per compilation unit:

•

TNS HP C

•

TNS HP C++

•

FORTRAN

•

Pascal

•

TAL

•

Native (TNS/R and TNS/E) HP C

•

Native (TNS/R and TNS/E) HP C++

•

pTAL

The object file contains one relocatable code block for each procedure and zero or

more data blocks.

Figure 24-1. Code and Data Blocks

Compiler

Separately compiled program A

Separately compiled program B

Nested program C

Nested program D

Code

Block

Code

Block

Code

Block

Code

Block

Data

Block

Data

Block

Data

Block

Data

Block

Data

Block

VST702.vsd