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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [lib/] [libcpu/] [powerpc/] [ppc403/] [vectors/] [README] - Blame information for rev 173

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#  $Id: README,v 1.2 2001-09-27 12:01:30 chris Exp $
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#
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The location of the vectors file object is critical.
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From the comments at the head of vectors.s:
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  The issue with this file is getting it loaded at the right place.
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  The first vector MUST be at address 0x????0100.
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  How this is achieved is dependant on the tool chain.
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  However the basic mechanism for ELF assemblers is to create a
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  section called ".vectors", which will be loaded to an address
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  between 0x????0000 and 0x????0100 (inclusive) via a link script.
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  The basic mechanism for XCOFF assemblers is to place it in the
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  normal text section, and arrange for this file to be located
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  at an appropriate position on the linker command line.
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  The variable 'PPC_VECTOR_FILE_BASE' must be defined to be the
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  offset from 0x????0000 to the first location in the file.  This
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  will usually be 0x0000 or 0x0100.
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Andrew Bray 18/8/1995

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