Binder Manual (G06.27+, H06.04+, J06.03+)

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Using Binder

Binder Manual—528613-004

2-5

Binding Modules

The undefined list differs from the unresolved list in that the undefined list contains

references to just data blocks whereas the unresolved list contains references to both

data blocks and code blocks. While Binder does not need to resolve unresolved code

references to entry points into the operating system or system code library, Binder

must resolve all data references within the process before run time. Undefined data

blocks have known size, but unknown initial values. C and Pascal require a data block

to be defined by exactly one module that is responsible for its initialization. The

undefined data list contains the names of those data blocks whose responsible module

has not yet been located.

Normally, an unresolved reference list is present during some part of the session.For

descriptions of these lists and how they are created, see Section 5, Binder Input and

Output.

Binding Modules

You can bind modules from the same language or from different languages. For

example, suppose two object files, named OBJFILEX and OBJFILEY, contain the code

and data blocks needed to make up a large program. Each object file contains multiple

program units or procedures, all of which are needed in the target file. For this

discussion, the source language does not matter.

You can bind the separate blocks by running BIND and then entering commands at the

Binder prompt. For example:

Unresolved

Reference

Lists

2 There are two unresolved reference lists,

one for entry points and one for data

blocks. As you enter each name on an

include list, Binder removes entries from

the unresolved reference lists if the

entries are satisfied by the new name.

Undefined

List

1 This list contains data blocks referenced,

but not yet defined in C or Pascal.

Search List 1 This list holds disk file names of object

files to search for unresolved references.

Binder searches these files in the order

in which you name them. If two files

contain versions of the same block,

Binder uses the first block encountered.

12> BIND

@ADD * FROM objfilex

@ADD * FROM objfiley

@BUILD trgfilez

Table 2-1. Target File Specifications built by Binder (page 2 of 2)

Name of List Number of Lists Allowed Description