Zilog ZUSBOPTS Bedienungsanleitung PDF herunterladen (Seite 216)

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Segment Naming UM017105-0511

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Zilog Developer Studio II – ZNEO™

User Manual

Segment Naming

The compiler places code and data into separate segments in the object file. The different

segments used by the compiler are listed in Table 15.

Linker Command Files for C Programs

This section describes how the ZNEO linker is used to link a C program. A C program

consists of compiled and assembled object module files, compiler libraries, user-created

libraries, and special object module files used for C run-time initializations. These files are

linked based on the commands given in the linker command file.

The default linker command file is automatically generated by the ZDS II IDE whenever a

build command is issued. It has information about the ranges of various address spaces

for the selected device, the assignment of segments to spaces, order of linking, and so on.

The default linker command file can be overridden by the user.

The linker processes the object modules (in the order in which they are specified in the

linker command file), resolves the external references between the modules, and then

locates the segments into the appropriate address spaces as per the linker command file.

Table 15. Segments

Segment Description

NEAR_DATA _Near initialized global and static data

NEAR_BSS _Near un-initialized global and static data

NEAR_TEXT _Near constant strings

FAR_DATA _Far initialized global and static data

FAR_BSS _Far un-initialized global and static data

FAR_TEXT _Far constant strings

ROM_DATA _Rom global and static data

ROM_TEXT _Rom constant strings

EROM_DATA _Erom global and static data

EROM_TEXT _Erom constant strings

CODE _Erom code

__VECTORS _Rom interrupt vectors

STARTUP _Rom C startup

1 2 ... 211 212 213 214 215 216 217 218 219 220 221 ... 519 520

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