#!/bin/sh
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# SPDX-License-Identifier: LGPL-2.1
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if [ $# -ne 3 ] ; then
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[ $# -eq 1 ] && hostarch=$1 || hostarch=`uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/`
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linux_header_dir=tools/include/uapi/linux
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header_dir=tools/include/uapi/asm-generic
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arch_header_dir=tools/arch/${hostarch}/include/uapi/asm
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else
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linux_header_dir=$1
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header_dir=$2
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arch_header_dir=$3
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fi
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linux_mman=${linux_header_dir}/mman.h
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arch_mman=${arch_header_dir}/mman.h
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# those in egrep -vw are flags, we want just the bits
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printf "static const char *mmap_flags[] = {\n"
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regex='^[[:space:]]*#[[:space:]]*define[[:space:]]+MAP_([[:alnum:]_]+)[[:space:]]+(0x[[:xdigit:]]+)[[:space:]]*.*'
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egrep -q $regex ${arch_mman} && \
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(egrep $regex ${arch_mman} | \
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sed -r "s/$regex/\2 \1 \1 \1 \2/g" | \
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xargs printf "\t[ilog2(%s) + 1] = \"%s\",\n#ifndef MAP_%s\n#define MAP_%s %s\n#endif\n")
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egrep -q $regex ${linux_mman} && \
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(egrep $regex ${linux_mman} | \
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egrep -vw 'MAP_(UNINITIALIZED|TYPE|SHARED_VALIDATE)' | \
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sed -r "s/$regex/\2 \1 \1 \1 \2/g" | \
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xargs printf "\t[ilog2(%s) + 1] = \"%s\",\n#ifndef MAP_%s\n#define MAP_%s %s\n#endif\n")
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([ ! -f ${arch_mman} ] || egrep -q '#[[:space:]]*include[[:space:]]+<uapi/asm-generic/mman.*' ${arch_mman}) &&
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(egrep $regex ${header_dir}/mman-common.h | \
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egrep -vw 'MAP_(UNINITIALIZED|TYPE|SHARED_VALIDATE)' | \
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sed -r "s/$regex/\2 \1 \1 \1 \2/g" | \
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xargs printf "\t[ilog2(%s) + 1] = \"%s\",\n#ifndef MAP_%s\n#define MAP_%s %s\n#endif\n")
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([ ! -f ${arch_mman} ] || egrep -q '#[[:space:]]*include[[:space:]]+<uapi/asm-generic/mman.h>.*' ${arch_mman}) &&
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(egrep $regex ${header_dir}/mman.h | \
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sed -r "s/$regex/\2 \1 \1 \1 \2/g" | \
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xargs printf "\t[ilog2(%s) + 1] = \"%s\",\n#ifndef MAP_%s\n#define MAP_%s %s\n#endif\n")
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printf "};\n"
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