Datasheet

Creating an Application

The default output from the linker is a non-relocatable image where the code starts at

0x8000

and the data section is placed immediately after the code. You can specify

exactly where the code and data sections are located by using linker options or a

scatter-load description file.

Linker input and output

Input to armlink consists of:

• one or more object files in ELF Object Format

• optionally, one or more libraries created by armar.

Output from a successful invocation of armlink is one of the following:

• an executable image in ELF executable format

• a partially linked object in ELF object format.

For simple images, ELF executable files contain segments that are approximately

equivalent to RO and RW output sections in the image. An ELF executable file also has

ELF sections that contain the image output sections.

An executable image in ELF executable format can be converted to other file formats

by using the fromELF utility.

Linker syntax

The linker command syntax is of the form:

armlink [-help_options] [-output_options] [-via_options] [-memory_map_options]

[-image_content_options] [[-image_info_options]] [-diagnostic_options]

See the ADS Linker and Utilities Guide for a detailed list of the linker options.

Using linker options to position sections

The following linker options control how sections are arranged in the final image and

whether the code and data can be moved to a new location after the application starts:

-ropi

This option makes the load and execution region containing the RO

output section position-independent. If this option is not used the region

is marked as absolute.

-ro-base address

This option sets the execution addresses of the region containing the RO

output section at

address

. The default address is

0x8000