ARM Compiler toolchain v4.1 for µVision Using the Compiler

Getting started with the Compiler
3.13 Code compatibility between separately compiled and assembled modules
By writing code that adheres to the ARM Architecture Procedure Call Standard (AAPCS), you
can ensure that separately compiled and assembled modules can work together. The AAPCS
forms part of the Base Standard Application Binary Interface for the ARM Architecture
specification.
Interworking qualifiers associated with the --apcs compiler command-line option control
interworking. Position independence qualifiers, also associated with the --apcs compiler
command-line option, control position independence, and affect the creation of reentrant and
thread-safe code.
Note
This does not mean that you must use the same --apcs command-line options to get your
modules to work together. You must be familiar with the AAPCS.
3.13.1 See also
Tasks
• ARM C libraries and multithreading on page 2-16.
Reference
Compiler Reference:
• --apcs=qualifer...qualifier on page 3-7.
Other information
• Procedure Call Standard for the ARM Architecture,
http://infocenter.arm.com/help/topic/com.arm.doc.ihi0042-/index.html
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