ARM Compiler toolchain Using the Linker - ARM Information Center

8.33 Overalignment of execution regions and input sections
8.33.1 See also
Using scatter files
There are situations when you want to overalign code and data sections. How you deal with
them depends on whether or not you have access to the source code:
• If you have access to the original source code, you can do this at compile time with the
__align(n) keyword or the --min_array_alignment command-line option, for example.
• If you do not have access to the source code, then you must use the following alignment
specifiers in a scatter file:
ALIGNALL Increases the section alignment of all the sections in an execution region, for
example:
ER_DATA ... ALIGNALL 8
{
... ;selectors
}
OVERALIGN
Increases the alignment of a specific section, for example:
ER_DATA ...
{
*.o(.bar, OVERALIGN 8)
... ;selectors
}
Concepts
• About creating regions on page boundaries on page 8-54
Reference
Linker Reference:
• Execution region attributes on page 4-11
• About input section descriptions on page 4-21.
Compiler Reference:
• __align on page 5-3
• --min_array_alignment=opt on page 3-145.
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