source: rtems/c/src/lib/libcpu/powerpc/ppc403/vectors/README @ 5e77d129

4.104.114.84.95
Last change on this file since 5e77d129 was 879a047, checked in by Joel Sherrill <joel.sherrill@…>, on Sep 26, 1995 at 1:25:58 PM

fixed Id strings

  • Property mode set to 100644
File size: 857 bytes
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2#  $Id$
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5The location of the vectors file object is critical.
6
7From the comments at the head of vectors.s:
8
9  The issue with this file is getting it loaded at the right place.
10  The first vector MUST be at address 0x????0100.
11  How this is achieved is dependant on the tool chain.
12
13  However the basic mechanism for ELF assemblers is to create a
14  section called ".vectors", which will be loaded to an address
15  between 0x????0000 and 0x????0100 (inclusive) via a link script.
16
17  The basic mechanism for XCOFF assemblers is to place it in the
18  normal text section, and arrange for this file to be located
19  at an appropriate position on the linker command line.
20
21  The variable 'PPC_VECTOR_FILE_BASE' must be defined to be the
22  offset from 0x????0000 to the first location in the file.  This
23  will usually be 0x0000 or 0x0100.
24
25Andrew Bray 18/8/1995
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