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name : mmap_prot.sh
 #!/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}`
( ! test -f ${arch_mman} \
|| grep -E -q '#[[:space:]]*include[[:space:]]+.*uapi/asm-generic/mman.*' ${arch_mman}) &&
(grep -E $regex ${common_mman} | \
	grep -E -vw PROT_NONE | \
	sed -r "s/$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")
test -f ${arch_mman} && grep -E -q $regex ${arch_mman} &&
(grep -E $regex ${arch_mman} | \
	grep -E -vw PROT_NONE | \
	sed -r "s/$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"
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