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-rwxr-xr-xtools/perf/trace/beauty/arch_errno_names.sh89
1 files changed, 89 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 000000000..37c53bac5
--- /dev/null
+++ b/tools/perf/trace/beauty/arch_errno_names.sh
@@ -0,0 +1,89 @@
+#!/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()
+{
+ local arch="$1"
+ local header
+
+ header="$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()
+{
+ local arch=$(arch_string "$1")
+ local nr name
+
+ 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()
+{
+ local arch="$1"
+ local asm_errno=$(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()
+{
+ local archlist="$1"
+ local default="$2"
+ local arch
+
+ printf 'const char *arch_syscalls__strerrno(const char *arch, int err)\n'
+ printf '{\n'
+ for arch in $archlist; do
+ printf '\tif (!strcmp(arch, "%s"))\n' $(arch_string "$arch")
+ printf '\t\treturn errno_to_name__%s(err);\n' $(arch_string "$arch")
+ done
+ printf '\treturn errno_to_name__%s(err);\n' $(arch_string "$default")
+ 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 arch in $(find $toolsdir/arch -maxdepth 1 -mindepth 1 -type d -printf "%f\n" | sort -r); do
+ 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"