[PATCH] scripts: unify system call table generation scripts

From: Firoz Khan <firoz.khan@linaro.org>
To: Paul Burton <paul.burton@mips.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Philippe Ombredanne <pombredanne@nexb.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Kate Stewart <kstewart@linuxfoundation.org>
Cc: y2038@lists.linaro.org, linux-kernel@vger.kernel.org,
	linux-arch@vger.kernel.org, arnd@arndb.de,
	deepa.kernel@gmail.com, marcin.juszkiewicz@linaro.org,
	firoz.khan@linaro.org
Subject: [PATCH] scripts: unify system call table generation scripts
Date: Wed,  2 Jan 2019 19:58:51 +0530	[thread overview]
Message-ID: <1546439331-18646-1-git-send-email-firoz.khan@linaro.org> (raw)

System call table generation support is provided for
alpha, ia64, m68k, microblaze, mips, parisc, powerpc,
sh, sparc and xtensa architectures. The implementat-
ions are almost similar across all the above archte-
ctures.

In order to reduce the source code across all the
above architectures, create common ".sh" files and
keep it in the common directory, script/.

This will be a generic scripts which can use for all
the above architectures.

Signed-off-by: Firoz Khan <firoz.khan@linaro.org>
---
 scripts/syscallhdr.sh | 37 +++++++++++++++++++++++++++++++++++++
 scripts/syscallnr.sh  | 32 ++++++++++++++++++++++++++++++++
 scripts/syscalltbl.sh | 37 +++++++++++++++++++++++++++++++++++++
 3 files changed, 106 insertions(+)
 create mode 100644 scripts/syscallhdr.sh
 create mode 100644 scripts/syscallnr.sh
 create mode 100644 scripts/syscalltbl.sh

diff --git a/scripts/syscallhdr.sh b/scripts/syscallhdr.sh
new file mode 100644
index 0000000..d03fe3d
--- /dev/null
+++ b/scripts/syscallhdr.sh
@@ -0,0 +1,37 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+in="$1"
+out="$2"
+my_abis=`echo "($3)" | tr ',' '|'`
+prefix="$4"
+offset="$5"
+
+fileguard=_UAPI_ASM_`basename "$out" | sed \
+	-e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
+	-e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g'`
+grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
+	printf "#ifndef %s\n" "${fileguard}"
+	printf "#define %s\n" "${fileguard}"
+	printf "\n"
+
+	nxt=0
+	while read nr abi name entry compat ; do
+		if [ -z "$offset" ]; then
+			printf "#define __NR_%s%s\t%s\n" \
+				"${prefix}" "${name}" "${nr}"
+		else
+			printf "#define __NR_%s%s\t(%s + %s)\n" \
+				"${prefix}" "${name}" "${offset}" "${nr}"
+		fi
+		nxt=$((nr+1))
+	done
+
+	printf "\n"
+	printf "#ifdef __KERNEL__\n"
+	printf "#define __NR_syscalls\t%s\n" "${nxt}"
+	printf "#endif\n"
+	printf "\n"
+	printf "#endif /* %s */" "${fileguard}"
+	printf "\n"
+) > "$out"
diff --git a/scripts/syscallnr.sh b/scripts/syscallnr.sh
new file mode 100644
index 0000000..8cf33fa
--- /dev/null
+++ b/scripts/syscallnr.sh
@@ -0,0 +1,32 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+in="$1"
+out="$2"
+my_abis=`echo "($3)" | tr ',' '|'`
+prefix="$4"
+offset="$5"
+
+fileguard=_UAPI_ASM_`basename "$out" | sed \
+	-e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
+	-e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g'`
+grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
+	printf "#ifndef %s\n" "${fileguard}"
+	printf "#define %s\n" "${fileguard}"
+	printf "\n"
+
+	nxt=0
+	while read nr abi name entry compat ; do
+		nxt=$((nr+1))
+	done
+
+	if [ ! -z "$prefix" ]; then
+		printf "#define __NR_%s_Linux_syscalls\t%s\n" "${prefix}" "${nxt}"
+		if [ ! -z "$offset" ]; then
+			printf "#define __NR_%s_Linux\t%s\n" "${prefix}" "${offset}"
+		fi
+	fi
+	printf "\n"
+	printf "#endif /* %s */" "${fileguard}"
+	printf "\n"
+) > "$out"
diff --git a/scripts/syscalltbl.sh b/scripts/syscalltbl.sh
new file mode 100644
index 0000000..f60f762
--- /dev/null
+++ b/scripts/syscalltbl.sh
@@ -0,0 +1,37 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+in="$1"
+out="$2"
+my_abis=`echo "($3)" | tr ',' '|'`
+my_abi="$4"
+offset="$5"
+
+emit() {
+	t_nxt="$1"
+	t_nr="$2"
+	t_entry="$3"
+
+	while [ $t_nxt -lt $t_nr ]; do
+		printf "__SYSCALL(%s,sys_ni_syscall)\n" "${t_nxt}"
+		t_nxt=$((t_nxt+1))
+	done
+	printf "__SYSCALL(%s,%s)\n" "${t_nxt}" "${t_entry}"
+}
+
+grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
+	nxt=0
+	if [ -z "$offset" ]; then
+		offset=0
+	fi
+
+	while read nr abi name entry compat ; do
+		if [ "$my_abi" = "c32" -o "$my_abi" = "64_o32" ] &&
+			[ ! -z "$compat" ]; then
+			emit $((nxt+offset)) $((nr+offset)) $compat
+		else
+			emit $((nxt+offset)) $((nr+offset)) $entry
+		fi
+		nxt=$((nr+1))
+	done
+) > "$out"
-- 
1.9.1

