section placement file preprocessor

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Clinton

• February 14, 2018 21:18

In the section placement file, we have lines such as:

  <MemorySegment name="$(RAM_NAME:RAM);SRAM">

I assume the "$(RAM_NAME:RAM);SRAM" part gets replaced with the real name of a section defined in the memory map file.

How can I determine the real section name?

I found this page:

http://www.rowleydownload.co.uk/arm/documentation/index.htm?http://www.rowleydownload.co.uk/arm/documentation/ide_section_placement.htm

From which:

"When a section placement file is used for linking it is preprocessed using the (as yet undocumented) CrossWorks XML preprocessor."

Thanks

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• 

  Jon Elliott

  • February 15, 2018 17:02

  $(RAM_NAME:RAM) expands to RAM if the macro RAM_NAME has not been defined in the Linker > Section Placement Macros project property. If it has been defined, it will expand the RAM_NAME macro. The conditional macro syntax is described here.

  The linker script generator searches through the ';' separated list of memory sections described in the section placement file until it finds a memory segment in the memory map file with a matching name. When it finds a match it places all the sections in that memory segment.

  You can find out where a section has been placed in memory using the memory usage window, the symbols browser or by looking at the generated linker script.

   

   

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  Clinton

  • February 15, 2018 19:58

  Thank you

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