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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
in="$1"
out="$2"
syscall_macro() {
abi="$1"
nr="$2"
entry="$3"
# Entry can be either just a function name or "function/qualifier"
real_entry="${entry%%/*}"
if [ "$entry" = "$real_entry" ]; then
qualifier=
else
qualifier=${entry#*/}
fi
echo "__SYSCALL_${abi}($nr, $real_entry, $qualifier)"
}
emit() {
abi="$1"
nr="$2"
entry="$3"
compat="$4"
if [ "$abi" = "64" -a -n "$compat" ]; then
echo "a compat entry for a 64-bit syscall makes no sense" >&2
exit 1
fi
if [ -z "$compat" ]; then
if [ -n "$entry" ]; then
syscall_macro "$abi" "$nr" "$entry"
fi
else
echo "#ifdef CONFIG_X86_32"
if [ -n "$entry" ]; then
syscall_macro "$abi" "$nr" "$entry"
fi
echo "#else"
syscall_macro "$abi" "$nr" "$compat"
echo "#endif"
fi
}
grep '^[0-9]' "$in" | sort -n | (
while read nr abi name entry compat; do
abi=`echo "$abi" | tr '[a-z]' '[A-Z]'`
if [ "$abi" = "COMMON" -o "$abi" = "64" ]; then
# COMMON is the same as 64, except that we don't expect X32
# programs to use it. Our expectation has nothing to do with
# any generated code, so treat them the same.
emit 64 "$nr" "$entry" "$compat"
elif [ "$abi" = "X32" ]; then
# X32 is equivalent to 64 on an X32-compatible kernel.
echo "#ifdef CONFIG_X86_X32_ABI"
emit 64 "$nr" "$entry" "$compat"
echo "#endif"
elif [ "$abi" = "I386" ]; then
emit "$abi" "$nr" "$entry" "$compat"
else
echo "Unknown abi $abi" >&2
exit 1
fi
done
) > "$out"
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