tools beauty: Add script to generate table of mmap's 'prot' argument

Will be wired up in the following csets:

  $ tools/perf/trace/beauty/mmap_prot.sh
  static const char *mmap_prot[] = {
  	[ilog2(0x1) + 1] = "READ",
  #ifndef PROT_READ
  #define PROT_READ 0x1
  #endif
  	[ilog2(0x2) + 1] = "WRITE",
  #ifndef PROT_WRITE
  #define PROT_WRITE 0x2
  #endif
  	[ilog2(0x4) + 1] = "EXEC",
  #ifndef PROT_EXEC
  #define PROT_EXEC 0x4
  #endif
  	[ilog2(0x8) + 1] = "SEM",
  #ifndef PROT_SEM
  #define PROT_SEM 0x8
  #endif
  	[ilog2(0x01000000) + 1] = "GROWSDOWN",
  #ifndef PROT_GROWSDOWN
  #define PROT_GROWSDOWN 0x01000000
  #endif
  	[ilog2(0x02000000) + 1] = "GROWSUP",
  #ifndef PROT_GROWSUP
  #define PROT_GROWSUP 0x02000000
  #endif
  };
  $
  $
  $
  $ tools/perf/trace/beauty/mmap_prot.sh alpha
  static const char *mmap_prot[] = {
  	[ilog2(0x4) + 1] = "EXEC",
  #ifndef PROT_EXEC
  #define PROT_EXEC 0x4
  #endif
  	[ilog2(0x01000000) + 1] = "GROWSDOWN",
  #ifndef PROT_GROWSDOWN
  #define PROT_GROWSDOWN 0x01000000
  #endif
  	[ilog2(0x02000000) + 1] = "GROWSUP",
  #ifndef PROT_GROWSUP
  #define PROT_GROWSUP 0x02000000
  #endif
  	[ilog2(0x1) + 1] = "READ",
  #ifndef PROT_READ
  #define PROT_READ 0x1
  #endif
  	[ilog2(0x8) + 1] = "SEM",
  #ifndef PROT_SEM
  #define PROT_SEM 0x8
  #endif
  	[ilog2(0x2) + 1] = "WRITE",
  #ifndef PROT_WRITE
  #define PROT_WRITE 0x2
  #endif
  };
  $

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/trace/beauty/mmap_prot.sh

+#!/bin/sh
+# SPDX-License-Identifier: LGPL-2.1
+
+if [ $# -ne 2 ] ; then
+	[ $# -eq 1 ] && hostarch=$1 || hostarch=`uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/`
+	asm_header_dir=tools/include/uapi/asm-generic
+	arch_header_dir=tools/arch/${hostarch}/include/uapi/asm
+else
+	asm_header_dir=$1
+	arch_header_dir=$2
+fi
+
+common_mman=${asm_header_dir}/mman-common.h
+arch_mman=${arch_header_dir}/mman.h
+
+prefix="PROT"
+
+printf "static const char *mmap_prot[] = {\n"
+regex=`printf '^[[:space:]]*#[[:space:]]*define[[:space:]]+%s_([[:alnum:]_]+)[[:space:]]+(0x[[:xdigit:]]+)[[:space:]]*.*' ${prefix}`
+([ ! -f ${arch_mman} ] || egrep -q '#[[:space:]]*include[[:space:]]+<uapi/asm-generic/mman.*' ${arch_mman}) &&
+(egrep $regex ${common_mman} | \
+	egrep -vw PROT_NONE | \
+	sed -r "s/$regex/\2 \1 \1 \1 \2/g"	| \
+	xargs printf "\t[ilog2(%s) + 1] = \"%s\",\n#ifndef ${prefix}_%s\n#define ${prefix}_%s %s\n#endif\n")
+[ -f ${arch_mman} ] && egrep -q $regex ${arch_mman} && 
+(egrep $regex ${arch_mman} | \
+	egrep -vw PROT_NONE | \
+	sed -r "s/$regex/\2 \1 \1 \1 \2/g"	| \
+	xargs printf "\t[ilog2(%s) + 1] = \"%s\",\n#ifndef ${prefix}_%s\n#define ${prefix}_%s %s\n#endif\n")
+printf "};\n"