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Preface Overview of the Compiler Getting Started with the Compiler Compiler command-line syntax Compiler command-line options listed by group Default compiler behavior Order of compiler command-line options Using stdin to input source code to the compiler Directing output to stdout Filename suffixes recognized by the compiler Compiler output files Factors influencing how the compiler searches for Compiler command-line options and search paths Compiler search rules and the current place The ARMCC5INC environment variable Code compatibility between separately compiled and Linker feedback during compilation Unused function code Minimizing code size by eliminating unused functio Compilation build time Compilation build time Minimizing compilation build time Minimizing compilation build time with a single ar Effect of --multifile on compilation build time Minimizing compilation build time with parallel ma Compilation build time on Windows Compiler Features Compiler Coding Practices Compiler Diagnostic Messages Using the Inline and Embedded Assemblers of the AR Compiler Command-line Options Language Extensions Compiler-specific Features C and C++ Implementation Details What is Semihosting? Via File Syntax Summary Table of GNU Language Extensions Standard C Implementation Definition Standard C++ Implementation Definition C and C++ Compiler Implementation Limits

Code compatibility between separately compiled and assembled modules

2.13 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.
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