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-rw-r--r--arch/arm/tools/syscallnr.sh33
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/arm/tools/syscallnr.sh b/arch/arm/tools/syscallnr.sh
new file mode 100644
index 0000000000..9e386770b6
--- /dev/null
+++ b/arch/arm/tools/syscallnr.sh
@@ -0,0 +1,33 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+in="$1"
+out="$2"
+align=1
+
+fileguard=_ASM_ARM_`basename "$out" | sed \
+ -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
+ -e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g'`
+
+grep -E "^[0-9A-Fa-fXx]+[[:space:]]+" "$in" | sort -n | tail -n1 | (
+ echo "#ifndef ${fileguard}
+#define ${fileguard} 1
+
+/*
+ * This needs to be greater than __NR_last_syscall+1 in order to account
+ * for the padding in the syscall table.
+ */
+"
+
+ while read nr abi name entry; do
+ nr=$(($nr + 1))
+ while [ "$(($nr / (256 * $align) ))" -gt 0 ]; do
+ align=$(( $align * 4 ))
+ done
+ nr=$(( ($nr + $align - 1) & ~($align - 1) ))
+ echo "/* aligned to $align */"
+ echo "#define __NR_syscalls $nr"
+ done
+
+ echo ""
+ echo "#endif /* ${fileguard} */"
+) > "$out"