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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
Steering file command summary
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The steering file commands are:
Table 9. Steering file command summary
| Command | Description |
|---|---|
EXPORT | Specifies that a symbol can be accessed by other shared objects or executables. |
HIDE | Makes defined global symbols in the symbol table anonymous. |
IMPORT | Specifies that a symbol is defined in a shared object at runtime. |
RENAME | Renames defined and undefined global symbol names. |
REQUIRE | Creates a DT_NEEDED tag
in the dynamic array. DT_NEEDED tags specify
dependencies to other shared objects used by the application, for
example, a shared library. |
RESOLVE | Matches specific undefined references to a defined global symbol. |
SHOW | Makes global symbols visible. This command is useful if you want to make a specific symbol visible that is hidden using a HIDE command with a wildcard. |
Note
The steering file commands control only global symbols. Local symbols are not affected by any of these commands.
See also- Tasks
- Concepts
- Reference
| Copyright © 2007-2008, 2011-2012 ARM. All rights reserved. | ARM DUI 0377D |
| Non-Confidential | ID062912 |
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