diff options
| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-02-17 20:24:53 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-02-17 20:24:53 +0000 |
| commit | ee733965291f61dd959c0f75659b0482df7a64ca (patch) | |
| tree | 1b7cd7bafa0e265b562fb8c6df14070293161c9a /c/src/lib/libcpu/powerpc/mpc860/vectors/README | |
| parent | Patch from Eric Valette <valette@crf.canon.fr> to undo the patch (diff) | |
| download | rtems-ee733965291f61dd959c0f75659b0482df7a64ca.tar.bz2 | |
Jay Monkman <jmonkman@frasca.com> submitted the eth_comm BSP for a PPC860
based board.
Diffstat (limited to 'c/src/lib/libcpu/powerpc/mpc860/vectors/README')
| -rw-r--r-- | c/src/lib/libcpu/powerpc/mpc860/vectors/README | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/c/src/lib/libcpu/powerpc/mpc860/vectors/README b/c/src/lib/libcpu/powerpc/mpc860/vectors/README new file mode 100644 index 0000000000..4081ae2525 --- /dev/null +++ b/c/src/lib/libcpu/powerpc/mpc860/vectors/README @@ -0,0 +1,25 @@ +# +# $Id$ +# + +The location of the vectors file object is critical. + +From the comments at the head of vectors.s: + + The issue with this file is getting it loaded at the right place. + The first vector MUST be at address 0x????0100. + How this is achieved is dependant on the tool chain. + + However the basic mechanism for ELF assemblers is to create a + section called ".vectors", which will be loaded to an address + between 0x????0000 and 0x????0100 (inclusive) via a link script. + + The basic mechanism for XCOFF assemblers is to place it in the + normal text section, and arrange for this file to be located + at an appropriate position on the linker command line. + + The variable 'PPC_VECTOR_FILE_BASE' must be defined to be the + offset from 0x????0000 to the first location in the file. This + will usually be 0x0000 or 0x0100. + +Andrew Bray 18/8/1995 |