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[Bug ld/16635] New: insert crc

From: sourceforge.brock at dse dot nl
Subject: [Bug ld/16635] New: insert crc
Date: Wed, 26 Feb 2014 09:55:54 +0000


            Bug ID: 16635
           Summary: insert crc
           Product: binutils
           Version: unspecified
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: ld
          Assignee: unassigned at sourceware dot org
          Reporter: sourceforge.brock at dse dot nl


I hope this is the proper way to request a new feature.

What I would really like is if the linker could calculate a CRC over the
generated output and add it at a fixed place in the output along with start and
length of the block that was checked. This would make it possible to check the
integrity of the image even after it has been programmed to flash in a
microcontroller which typically a bootloader would want to do before starting
the application. It can also be used as a quick check to see if two images are
not equal. Further it can be used as automatically generated identifier for
distincting between compiled sources with the same version number. Distinction
could be the result of modified sources, different compiler/linker options or a
different version of the tools.

Kind regards,
Maarten Brock

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