perf beauty: Add a string table generator for x86's 'arch_prctl' codes

Commit-ID:  ff4cb769bc2dcc9a74a1c29e403bcfaf789365ef
Gitweb:     https://git.kernel.org/tip/ff4cb769bc2dcc9a74a1c29e403bcfaf789365ef
Author:     Arnaldo Carvalho de Melo <[email protected]>
AuthorDate: Mon, 17 Dec 2018 16:11:37 -0300
Committer:  Arnaldo Carvalho de Melo <[email protected]>
CommitDate: Tue, 18 Dec 2018 16:15:18 -0300

perf beauty: Add a string table generator for x86's 'arch_prctl' codes

  $ tools/perf/trace/beauty/x86_arch_prctl.sh
  #define x86_arch_prctl_codes_1_offset 0x1001
  static const char *x86_arch_prctl_codes_1[] = {
	[0x1001 - 0x1001]= "SET_GS",
	[0x1002 - 0x1001]= "SET_FS",
	[0x1003 - 0x1001]= "GET_FS",
	[0x1004 - 0x1001]= "GET_GS",
	[0x1011 - 0x1001]= "GET_CPUID",
	[0x1012 - 0x1001]= "SET_CPUID",
  };

#define x86_arch_prctl_codes_2_offset 0x2001

  static const char *x86_arch_prctl_codes_2[] = {
	[0x2001 - 0x2001]= "MAP_VDSO_X32",
	[0x2002 - 0x2001]= "MAP_VDSO_32",
	[0x2003 - 0x2001]= "MAP_VDSO_64",

};
$

---
 tools/perf/trace/beauty/x86_arch_prctl.sh | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

new file mode 100755
index 000000000000..7372d3cab959
@@ -0,0 +1,26 @@
+#!/bin/sh
+# Copyright (C) 2018, Red Hat Inc, Arnaldo Carvalho de Melo <[email protected]>
+# SPDX-License-Identifier: LGPL-2.1
+
+[ $# -eq 1 ] && x86_header_dir=$1 || x86_header_dir=tools/arch/x86/include/uapi/asm/
+
+prctl_arch_header=${x86_header_dir}/prctl.h
+
+print_range () {
+	local idx=$1
+	local prefix=$2
+	local first_entry=$3
+
+	printf "#define x86_arch_prctl_codes_%d_offset %s\n" $idx $first_entry
+	printf "static const char *x86_arch_prctl_codes_%d[] = {\n" $idx
+	regex=`printf '^[[:space:]]*#[[:space:]]*define[[:space:]]+ARCH_([[:alnum:]_]+)[[:space:]]+(%s[[:xdigit:]]+).*' ${prefix}`
+	fmt="\t[%#x - ${first_entry}]= \"%s\",\n"
+	egrep -q $regex ${prctl_arch_header} && \
+	(egrep $regex ${prctl_arch_header} | \
+		sed -r "s/$regex/\2 \1/g"	| \
+		xargs printf "$fmt")
+	printf "};\n\n"
+}
+
+print_range 1 0x1 0x1001
+print_range 2 0x2 0x2001