| ||||
| Home Products Download Events Support | ||||
Technical Support
On-Line Manuals
C251 User's Guide
C251 Introduction Compiling Programs Language Extensions Preprocessor 
Advanced Programming Customization Files 
Startup Code Variable Initialization Code Basic I/O Memory Allocation Optimizer General Optimizations 251-Specific Optimizations Options for Code Generation Global Register Coloring Segment Naming Conventions Segment Types Initialization Segments Function Symbols Parameter Passing Symbols Hardware Stack Calculating Stack Size Interfacing C Programs to Assembler Global Variables Function Parameters Passing in Memory Passing in Registers Function Return Values Using the SRC Directive Register Usage Overlaying Segments TINY Model XTINY Model SMALL Model XSMALL Model LARGE Model Data Storage Formats Bit Variables 1-Byte Scalars 2-Byte Scalars 4-Byte Scalars Floating-point Numbers Floating-point Errors Double Numbers Double Errors Absolute Memory Locations Absolute Access Macros Linker Location Controls The _at_ Keyword Debugging Error Messages Library Reference AppendixFunction Parameters
C functions may pass parameters in registers and/or fixed memory locations. The REGPARMS and NOREGPARMS directives enable and disable parameter passing using registers.
Parameters are passed in fixed memory locations if parameter passing in registers is disabled, or if too many parameters are passed to fit in registers.
Typically, you use register parameters. The examples referred to only describe this way of parameter passing. Refer to Using the SRC Directive for an example.
| Contact Site Map Press Privacy | Copyright © 2012 ARM Ltd and ARM Germany GmbH. All rights reserved. |
