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#!/bin/sh
#
# Update syscall_nr.h files from linux headers asm-generic/unistd.h
#
# This code is licensed under the GPL version 2 or later. See
# the COPYING file in the top-level directory.
#
linux="$1"
output="$2"
TMP=$(mktemp -d)
if [ "$linux" = "" ] ; then
echo "Needs path to linux source tree" 1>&2
exit 1
fi
if [ "$output" = "" ] ; then
output="$PWD"
fi
upper()
{
echo "$1" | tr "[:lower:]" "[:upper:]" | tr "[:punct:]" "_"
}
qemu_arch()
{
case "$1" in
arm64)
echo "aarch64"
;;
*)
echo "$1"
;;
esac
}
read_includes()
{
arch=$1
bits=$2
cpp -P -nostdinc -fdirectives-only \
-D_UAPI_ASM_$(upper ${arch})_BITSPERLONG_H \
-D__BITS_PER_LONG=${bits} \
-I${linux}/arch/${arch}/include/uapi/ \
-I${linux}/include/uapi \
-I${TMP} \
"${linux}/arch/${arch}/include/uapi/asm/unistd.h"
}
filter_defines()
{
grep -e "#define __NR_" -e "#define __NR3264"
}
rename_defines()
{
sed "s/ __NR_/ TARGET_NR_/g;s/(__NR_/(TARGET_NR_/g"
}
evaluate_values()
{
sed "s/#define TARGET_NR_/QEMU TARGET_NR_/" | \
cpp -P -nostdinc | \
sed "s/^QEMU /#define /"
}
generate_syscall_nr()
{
arch=$1
bits=$2
file="$3"
guard="$(upper LINUX_USER_$(qemu_arch $arch)_$(basename "$file"))"
(echo "/*"
echo " * This file contains the system call numbers."
echo " * Do not modify."
echo " * This file is generated by scripts/gensyscalls.sh"
echo " */"
echo "#ifndef ${guard}"
echo "#define ${guard}"
echo
read_includes $arch $bits | filter_defines | rename_defines | \
evaluate_values | sort -n -k 3
echo
echo "#endif /* ${guard} */"
echo) > "$file"
}
mkdir "$TMP/asm"
> "$TMP/asm/bitsperlong.h"
generate_syscall_nr arm64 64 "$output/linux-user/aarch64/syscall_nr.h"
generate_syscall_nr nios2 32 "$output/linux-user/nios2/syscall_nr.h"
generate_syscall_nr openrisc 32 "$output/linux-user/openrisc/syscall_nr.h"
generate_syscall_nr riscv 32 "$output/linux-user/riscv/syscall32_nr.h"
generate_syscall_nr riscv 64 "$output/linux-user/riscv/syscall64_nr.h"
rm -fr "$TMP"
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