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#!/bin/sh
# SPDX-License-Identifier: LGPL-2.1
if [ $# -ne 2 ] ; then
[ $# -eq 1 ] && hostarch=$1 || hostarch=`uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/`
asm_header_dir=tools/include/uapi/asm-generic
arch_header_dir=tools/arch/${hostarch}/include/uapi/asm
else
asm_header_dir=$1
arch_header_dir=$2
fi
common_mman=${asm_header_dir}/mman-common.h
arch_mman=${arch_header_dir}/mman.h
prefix="PROT"
printf "static const char *mmap_prot[] = {\n"
regex=`printf '^[[:space:]]*#[[:space:]]*define[[:space:]]+%s_([[:alnum:]_]+)[[:space:]]+(0x[[:xdigit:]]+)[[:space:]]*.*' ${prefix}`
([ ! -f ${arch_mman} ] || egrep -q '#[[:space:]]*include[[:space:]]+.*uapi/asm-generic/mman.*' ${arch_mman}) &&
(egrep $regex ${common_mman} | \
egrep -vw PROT_NONE | \
sed -r "s/$regex/\2 \1 \1 \1 \2/g" | \
xargs printf "\t[ilog2(%s) + 1] = \"%s\",\n#ifndef ${prefix}_%s\n#define ${prefix}_%s %s\n#endif\n")
[ -f ${arch_mman} ] && egrep -q $regex ${arch_mman} &&
(egrep $regex ${arch_mman} | \
egrep -vw PROT_NONE | \
sed -r "s/$regex/\2 \1 \1 \1 \2/g" | \
xargs printf "\t[ilog2(%s) + 1] = \"%s\",\n#ifndef ${prefix}_%s\n#define ${prefix}_%s %s\n#endif\n")
printf "};\n"