Zilog ZUSBOPTS - Manual (Page 291)

UM017105-0511 Linker Commands
Zilog Developer Studio II – ZNEO™
User Manual
263
command to the linker, the segment is deleted from the linking process. This can be useful
if you must link only part of an executable or not write out a particular part of the execut-
able. The predefined space
NULL can also be used to prevent initialization of data while
reserving the segment in the original space using the COPY command. See also the exam-
ples for the
COPY command.
Examples
To change the name of a segment (for example, strseg ) to another segment name (for
example, codeseg ), use the following command:
CHANGE strseg=codeseg
To move a segment (for example, codeseg ) to a different address space (for example,
RAM), use the following command:
CHANGE codeseg=RAM
To not allocate a segment (for example, dataseg ), use the following command:
CHANGE dataseg=NULL
COPY
The COPY command is used to make a copy of a segment into a specified address space.
This is most often used to make a copy of initialized RAM in ROM so that it can be initial-
ized at run time.
Syntax
COPY [at]
<segment> can only be a segment.

<name> can only be an address space.
Examples
To make a copy of a code segment in ROM, observe the following procedure:
1. In the assembly code, define a code segment (for example, codeseg ) to be a segment
located in RAM. This is the run-time location of codeseg .
2. Use the following linker command:
COPY codeseg ROM
The linker places the actual contents associated with codeseg in ROM (the load time
location) and associates RAM (the run-time location) addresses with labels in code-
seg .