1 files changed, 91 insertions, 0 deletions
diff --git a/tools/perf/trace/beauty/arch_errno_names.sh b/tools/perf/trace/beauty/arch_errno_names.sh
new file mode 100755
index 000000000000..b22890b8d272
--- /dev/null
+++ b/tools/perf/trace/beauty/arch_errno_names.sh
@@ -0,0 +1,91 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+#
+# Generate C file mapping errno codes to errno names.
+#
+# Copyright IBM Corp. 2018
+# Author(s):  Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
+
+gcc="$1"
+toolsdir="$2"
+include_path="-I$toolsdir/include/uapi"
+
+arch_string()
+{
+	echo "$1" |sed -e 'y/- /__/' |tr '[[:upper:]]' '[[:lower:]]'
+}
+
+asm_errno_file()
+{
+	arch="$1"
+
+	header="$toolsdir/arch/$arch/include/uapi/asm/errno.h"
+	if test -r "$header"; then
+		echo "$header"
+	else
+		echo "$toolsdir/include/uapi/asm-generic/errno.h"
+	fi
+}
+
+create_errno_lookup_func()
+{
+	arch=$(arch_string "$1")
+
+	printf "static const char *errno_to_name__%s(int err)\n{\n\tswitch (err) {\n" $arch
+
+	while read name nr; do
+		printf '\tcase %d: return "%s";\n' $nr $name
+	done
+
+	printf '\tdefault: return "(unknown)";\n\t}\n}\n'
+}
+
+process_arch()
+{
+	arch="$1"
+	asm_errno=$(asm_errno_file "$arch")
+
+	$gcc $CFLAGS $include_path -E -dM -x c $asm_errno \
+		|grep -hE '^#define[[:blank:]]+(E[^[:blank:]]+)[[:blank:]]+([[:digit:]]+).*' \
+		|awk '{ print $2","$3; }' \
+		|sort -t, -k2 -nu \
+		|IFS=, create_errno_lookup_func "$arch"
+}
+
+create_arch_errno_table_func()
+{
+	archlist="$1"
+	default="$2"
+
+	printf 'static arch_syscalls__strerrno_t *\n'
+	printf 'arch_syscalls__strerrno_function(const char *arch)\n'
+	printf '{\n'
+	for arch in $archlist; do
+		arch_str=$(arch_string "$arch")
+		printf '\tif (!strcmp(arch, "%s"))\n' "$arch_str"
+		printf '\t\treturn errno_to_name__%s;\n' "$arch_str"
+	done
+	arch_str=$(arch_string "$default")
+	printf '\treturn errno_to_name__%s;\n' "$arch_str"
+	printf '}\n'
+}
+
+cat <<EoHEADER
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#include <string.h>
+
+EoHEADER
+
+# Create list of architectures that have a specific errno.h.
+archlist=""
+for f in $toolsdir/arch/*/include/uapi/asm/errno.h; do
+	d=${f%/include/uapi/asm/errno.h}
+	arch="${d##*/}"
+	test -f $toolsdir/arch/$arch/include/uapi/asm/errno.h && archlist="$archlist $arch"
+done
+
+for arch in generic $archlist; do
+	process_arch "$arch"
+done
+create_arch_errno_table_func "$archlist" "generic"