ARM VERSION 1.2 Datasheet download pdf (Page 101)

Creating an Application

Building the example

To build the example:

1. Enter the code using any text editor and save the file in your current working

directory as

addreg.s

2. Type

armasm -list addreg.lst addreg.s

at the command prompt to assemble the

source file.

3. Type

armlink addreg.o -o addreg

to link the file.

Running the example in the debugger

To load and run the example in the debugger:

1. Type

armsd addreg

to load the module into the command-line debugger.

2. Type

step

to step through the rest of the program one instruction at a time. After

each instruction, you can type

reg

to display the registers.

When the program terminates, to return to the command line, type

quit

For further details on ARM and Thumb assembly language programing, see the ADS

Assembler Guide.

3.3.3 Setting linker options from the command line

The ARM linker, armlink, enables you to:

• link a collection of objects and libraries into an executable ELF image

• partially link a collection of objects into an object that can be used as input for a

future link step

• specify where the code and data will be located in memory

• produce debug and reference information about the linked files.

Objects consist of input sections that contain code, initialized data, or the locations of

memory that must be set to zero. Input sections can be Read-Only (RO), Read/Write

(RW), or Zero-Initialized (ZI). These attributes are used by armlink to group input

sections into bigger building blocks called output sections, regions and images. Output

sections are approximately equivalent to ELF segments.

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ARM VERSION 1.2 Datasheet Page 101