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scripts: add a script to generate syscall_nr.h
This script is needed for targets based on asm-generic syscall numbers generation Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Taylor Simpson <tsimpson@quicinc.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20200316085620.309769-2-laurent@vivier.eu> [lv: added file in MAINTAINERS]
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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. | ||
# | ||
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linux="$1" | ||
output="$2" | ||
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TMP=$(mktemp -d) | ||
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if [ "$linux" = "" ] ; then | ||
echo "Needs path to linux source tree" 1>&2 | ||
exit 1 | ||
fi | ||
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if [ "$output" = "" ] ; then | ||
output="$PWD" | ||
fi | ||
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upper() | ||
{ | ||
echo "$1" | tr "[:lower:]" "[:upper:]" | tr "[:punct:]" "_" | ||
} | ||
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qemu_arch() | ||
{ | ||
case "$1" in | ||
arm64) | ||
echo "aarch64" | ||
;; | ||
*) | ||
echo "$1" | ||
;; | ||
esac | ||
} | ||
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read_includes() | ||
{ | ||
arch=$1 | ||
bits=$2 | ||
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cpp -P -nostdinc -fdirectives-only \ | ||
-D_UAPI_ASM_$(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" | ||
} | ||
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filter_defines() | ||
{ | ||
grep -e "#define __NR_" -e "#define __NR3264" | ||
} | ||
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rename_defines() | ||
{ | ||
sed "s/ __NR_/ TARGET_NR_/g;s/(__NR_/(TARGET_NR_/g" | ||
} | ||
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evaluate_values() | ||
{ | ||
sed "s/#define TARGET_NR_/QEMU TARGET_NR_/" | \ | ||
cpp -P -nostdinc | \ | ||
sed "s/^QEMU /#define /" | ||
} | ||
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generate_syscall_nr() | ||
{ | ||
arch=$1 | ||
bits=$2 | ||
file="$3" | ||
guard="$(upper LINUX_USER_$(qemu_arch $arch)_$(basename "$file"))" | ||
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(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" | ||
} | ||
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mkdir "$TMP/asm" | ||
> "$TMP/asm/bitsperlong.h" | ||
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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 "$output/linux-user/openrisc/syscall_nr.h" | ||
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generate_syscall_nr riscv 32 "$output/linux-user/riscv/syscall32_nr.h" | ||
generate_syscall_nr riscv 64 "$output/linux-user/riscv/syscall64_nr.h" | ||
rm -fr "$TMP" |