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Q43128: Producing an _TEXT Segment for Multiple Object Modules

Article: Q43128
Product(s): See article
Version(s): 3.x 4.06 | 5.01.20 5.01.21
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | S_C | mspl13_basic
Last Modified: 6-APR-1989

In a map file, a <modulename>_TEXT will be produced for each logical
code segment in your program. Since small and compact model programs
have only one code segment, you only get one logical segment, _TEXT.
Medium- and large-model programs, however, will have a separate
logical segment for each object module in the program, and thus produce
a <modulename>_TEXT for each logical segment.

To generate a map file, use the /M option with LINK or the /Fm option
with CL.

The following is an example map file generated when compiling a
program with two object modules in small-memory model:

 Start  Stop   Length Name                   Class
 00000H 016EAH 016EBH _TEXT                  CODE
 ...

The following is an example map file generated when compiling the same
program with two object modules in large-memory model:

 Start  Stop   Length Name                   Class
 00000H 0000DH 0000EH MAPL_TEXT              CODE
 0000EH 00023H 00016H MAP2_TEXT              CODE
 00024H 01B2CH 01B09H _TEXT                  CODE
 ...

MAPL_TEXT and MAP2_TEXT come from the files MAPL.OBJ and MAP2.OBJ,
respectively. The _TEXT is the Microsoft run-time library and any
third-party libraries.

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