RealView Compilation Tools Developer Guide - ARM Information ...

Embedded Software Development
}
RAM 0x10000 0x8000
{
* (+RW, +ZI); All non-constant data
}
2.4.4 Placing objects in a scatter-loading description file
For most images, you control the placement of specific code and data sections, rather
than grouping all attributes together as in Example 2-2 on page 2-17. You can do this
by specifying individual objects directly in the description file, instead of relying only
on the wildcard syntax.
Note
The ordering of objects in a description file execution region does not affect how they
are ordered in the output image. The linker placement rules described in Linker
placement rules on page 2-9 apply to each execution region.
To override the standard linker placement rules, you can use the +FIRST and +LAST
scatter-loading directives. Example 2-3 shows a scatter-loading description file that
places the vector table at the beginning of an execution region. In this example, the area
Vect in vectors.o is placed at address 0x0000.
Example 2-3 Placing a section
ROM_LOAD 0x0000 0x4000
{
ROM_EXEC 0x0000 0x4000
{
vectors.o (Vect, +FIRST)
* (+RO)
}
; more exec regions...
}
See Chapter 5 Using Scatter-loading Description Files in the Linker and Utilities Guide
for more information on placing objects in scatter-loading description files.
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Non-Confidential