tools: Add show_memory script

show_memory is a simple tools that parse the blx.map files and print a
representation of the memory layout for the latest build.
This representation is based on standard symbols present on the map
files as: __TEXT_START/END__, __RODATA_START/END__, __STACKS_START/END__
, etc..

Change-Id: Iba3e301a1a9fee9a35abf1afdb69093617d33929
Signed-off-by: Louis Mayencourt <louis.mayencourt@arm.com>

tools/memory/print_memory_map.py

@@ -0,0 +1,68 @@
+#!/usr/bin/env python3
+#
+# Copyright (c) 2019, Arm Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+import re
+import os
+import sys
+import operator
+
+# List of folder/map to parse
+bl_images = ['bl1', 'bl2', 'bl31']
+
+# List of symbols to search for
+blx_symbols = ['__BL1_RAM_START__', '__BL1_RAM_END__',
+                '__BL2_END__',
+                '__BL31_END__',
+                '__TEXT_START__', '__TEXT_END__',
+                '__RODATA_START__', '__RODATA_END__',
+                '__DATA_START__', '__DATA_END__',
+                '__STACKS_START__', '__STACKS_END__',
+                '__BSS_END',
+               ]
+
+# Regex to extract address from map file
+address_pattern = re.compile(r"\b0x\w*")
+
+# List of found element: [address, symbol, file]
+address_list = []
+
+# Get the directory from command line or use a default one
+if len(sys.argv) >= 2:
+    build_dir = sys.argv[1]
+else:
+    build_dir = 'build/fvp/debug'
+
+# Extract all the required symbols from the map files
+for image in bl_images:
+    file_path = os.path.join(build_dir, image, '{}.map'.format(image))
+    if os.path.isfile(file_path):
+        with open (file_path, 'rt') as mapfile:
+            for line in mapfile:
+                for symbol in blx_symbols:
+                    if line.find(symbol) > 0 and line.find("ASSERT") < 0:
+                        # Extract address from line
+                        match = address_pattern.search(line)
+                        if match:
+                            address_list.append([match.group(0), symbol, image])
+
+# Sort by address
+address_list.sort(key=operator.itemgetter(0))
+
+# Generate memory view
+print('{:-^87}'.format('Memory Map from: ' + build_dir))
+for address in reversed(address_list):
+    if "bl1" in address[2]:
+        print(address[0], '+{:-^20}+ |{:^20}| |{:^20}|'.format(address[1], '', ''))
+    elif "bl2" in address[2]:
+        print(address[0], '|{:^20}| +{:-^20}+ |{:^20}|'.format('', address[1], ''))
+    elif "bl31" in address[2]:
+        print(address[0], '|{:^20}| |{:^20}| +{:-^20}+'.format('', '', address[1]))
+    else:
+        print(address[0], '|{:^20}| |{:^20}| +{:-^20}+'.format('', '', address[1]))
+
+print('{:^20}{:_^20}   {:_^20}   {:_^20}'.format('', '', '', ''))
+print('{:^20}{:^20}   {:^20}   {:^20}'.format('address', 'bl1', 'bl2', 'bl31'))