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x86, syscall: Allow syscall offset to be symbolic

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Allow the specified syscall offset to be symbolic, e.g. a macro.  For
offset system calls, this if nothing else makes the generated code
easier to read.

Suggested-by: H. J. Lu <hjl.tools@gmail.com>
Link: http://lkml.kernel.org/r/1321569446-20433-7-git-send-email-hpa@linux.intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
H. Peter Anvin 2011-11-18 17:01:19 -08:00
parent 61f1e7e208
commit 3f86886c72
1 changed files with 5 additions and 1 deletions
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6
arch/x86/syscalls/syscallhdr.sh
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@ -15,7 +15,11 @@ grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
echo ""
while read nr abi name entry ; do
echo "#define __NR_${prefix}${name}" $((nr+offset))
if [ -z "$offset" ]; then
echo "#define __NR_${prefix}${name} $nr"
else
echo "#define __NR_${prefix}${name} ($offset + $nr)"
fi
done
echo ""