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Technical Support
On-Line Manuals
Linker User Guide
Conventions and feedback
Overview of the linker
Linking models supported by armlink
Image structure and generation
Using linker optimizations
Getting information about images
Accessing and managing symbols with armlink
About mapping symbols
Accessing linker-defined symbols
Region-related symbols
Image$$ execution region symbols
Load$$ execution region symbols
Load$$LR$$ load region symbols
Region name values when not scatter-loading
Using scatter files
Importing linker-defined symbols in C and C++
Importing linker-defined symbols in ARM assembler
Section-related symbols
Image symbols
Input section symbols
Accessing symbols in another image
Creating a symdefs file
Outputting a subset of the global symbols
Reading a symdefs file
Symdefs file format
What is a steering file?
Specifying steering files on the linker command-li
Steering file command summary
Steering file format
Hiding and renaming global symbols with a steering
Using $Super$$ and $Sub$$ to patch symbol definiti
Using scatter files
Linker User Guide
Accessing linker-defined symbols
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| Home > Accessing and managing symbols with armlink > Accessing linker-defined symbols | |||
The linker defines some symbols that contain the character
sequence $$. These symbols, and all other external
names containing the sequence $$, are names reserved
by ARM.
You can import these symbolic addresses and use them as relocatable addresses by your assembly language programs, or refer to them as extern symbols from your C or C++ source code.
Be aware that:
If you use the
--strictcompiler command-line option, the compiler does not accept symbol names containing dollar symbols. To re-enable support, include the--dollaroption on the compiler command line.Linker-defined symbols are only generated when your code references them.
See also- Concepts
- Reference
Compiler Reference:
| Copyright © 2007-2008, 2011-2012 ARM. All rights reserved. | ARM DUI 0377D |
| Non-Confidential | ID062912 |
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| Home > Accessing and managing symbols with armlink > Accessing linker-defined symbols |
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