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RealView Linker and Utilities Guide
Preface Introduction The Linker Command Syntax Using the Basic Linker Functionality Accessing Image Symbols Using Scatter-loading Description Files About scatter-loading
Symbols defined for scatter-loading Specifying stack and heap using the scatter-loadin When to use scatter-loading Scatter-loading command-line option Images with a simple memory map Images with a complex memory map Formal syntax of the scatter-loading description f BNF notation and syntax Overview of the syntax of scatter-loading descript Load region description Execution region description Input section description Resolving multiple matches Resolving path names Expression evaluation in scatter-loading files Examples of specifying region and section addresse Selecting veneer input sections in scatter-loading Creating root execution regions Placing regions at fixed addresses Using overlays to place sections Assigning sections to a root region Reserving an empty region Placing ARM libraries Creating regions on page boundaries Using preprocessing directives Equivalent scatter-loading descriptions for simple Type 1, one load region and contiguous execution r Type 2, one load region and non contiguous executi Type 3, two load regions and non contiguous execut Using the ARM Librarian Using fromelfSymbols defined for scatter-loading
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| Home > Using Scatter-loading Description Files > About scatter-loading > Symbols defined for scatter-loading | |||
When the linker creates an image using a scatter-loading description file, it creates some region-related symbols. These are described in Region-related symbols. The linker creates these special symbols only if your code references them.
Be aware, the following symbols are not defined when a scatter-loading description file is used:
Image$$RW$$Base
Image$$RW$$Limit
Image$$RO$$Base
Image$$RO$$Limit
Image$$ZI$$Base
Image$$ZI$$Limit
See Accessing linker-defined symbols for more information.
If you use a scatter-loading description file but do not specify any special region names and do not re-implement __user_initial_stackheap(), the library generates an error message:
Error: L6915E: Library reports error: scatter‑load file declares no heap or stack regions and __user_initial_stackheap is not defined.
See Chapter 2 The C and C++ Libraries in the Libraries Guide for more information on library memory models.
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