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The ARM C and C++ libraries
Mandatory linkage with the C library
C and C++ runtime libraries
C and C++ library features
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How to ensure re-implemented mutex functions are c
Using the ARM C library in a multithreaded environ
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C library API definitions for targeting a differen
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Bare machine integer C
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LC_CTYPE data block
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Tailoring non-input/output C library functions
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mathlib error handling
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Standard C++ library implementation definition
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Compiler generated and library-resident helper fun
C and C++ library naming conventions
Using macro__ARM_WCHAR_NO_IO to disable FILE decla
The ARM C micro-library
Floating-point support
Libraries and Floating Point Support Guide
C library API definitions for targeting a different environment
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| Home > The ARM C and C++ libraries > C library API definitions for targeting a different environment | |||
In addition to the semihosting functions listed in Table 2 and Table 3, Table 4 shows functions and files that might be useful when building for a different environment.
Table 4. Published API definitions
| File or function | Description |
|---|---|
__main() __rt_entry() | Initializes the runtime environment and executes the user application |
__rt_lib_init(), __rt_exit(), __rt_lib_shutdown() | Initializes or finalizes the runtime library |
LC_CTYPE locale | Defines the character properties for the local alphabet |
rt_sys.h | A C header file describing all the functions whose default (semihosted) implementations use semihosting calls |
rt_heap.h | A C header file describing the storage management abstract data type |
rt_locale.h | A C header file describing the five locale category filing systems, and defining some macros that are useful for describing the contents of locale categories |
rt_misc.h | A C header file describing miscellaneous unrelated public interfaces to the C library |
rt_memory.s | An empty, but commented, prototype implementation of the memory model |
If you are re-implementing a function that exists in the standard ARM library, the linker uses an object or library from your project rather than the standard ARM library.
Caution
Do not replace or delete libraries supplied by ARM. You must not overwrite the supplied library files. Place your re-implemented functions in separate object files or libraries instead.
See also- Tasks
- Concepts
- Reference
Linker Reference:
| Copyright © 2007-2008, 2011-2012 ARM. All rights reserved. | ARM DUI 0378D |
| Non-Confidential | ID062912 |
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