File content as of revision 9:2d27d77ada5c:

#!/usr/bin/env python
# pylint: disable=too-many-arguments, too-many-locals, too-many-branches, too-many-lines, line-too-long, too-many-nested-blocks, too-many-public-methods, too-many-instance-attributes
# pylint: disable=invalid-name, missing-docstring

# Memory Map File Analyser for ARM mbed OS

import sys
import os
import re
import csv
import json
import argparse
from prettytable import PrettyTable

debug = False

class MemapParser(object):

    def __init__(self):
        """
        General initialization
        """

        # list of all modules and their sections
        self.modules = dict()

        self.misc_flash_sections = ('.interrupts', '.flash_config')

        self.other_sections = ('.interrupts_ram', '.init', '.ARM.extab', \
                               '.ARM.exidx', '.ARM.attributes', '.eh_frame', \
                               '.init_array', '.fini_array', '.jcr', '.stab', \
                               '.stabstr', '.ARM.exidx', '.ARM')

        # sections to print info (generic for all toolchains)
        self.sections = ('.text', '.data', '.bss', '.heap', '.stack')

        # sections must be defined in this order to take irrelevant out
        self.all_sections = self.sections + self.other_sections + \
                            self.misc_flash_sections + ('unknown', 'OUTPUT')

        self.print_sections = ('.text', '.data', '.bss')

        # list of all object files and mappting to module names
        self.object_to_module = dict()

    def module_add(self, module_name, size, section):
        """
        Adds a module / section to the list
        """

        if module_name in self.modules:
            self.modules[module_name][section] += size
        else:
            temp_dic = dict()
            for section_idx in self.all_sections:
                temp_dic[section_idx] = 0
            temp_dic[section] = size
            self.modules[module_name] = temp_dic

    def check_new_section_gcc(self, line):
        """
        Check whether a new section in a map file has been detected (only applies to gcc)
        """

        for i in self.all_sections:
            if line.startswith(i):
                return i  # should name of the section (assuming it's a known one)

        if line.startswith('.'):
            return 'unknown'     # all others are clasified are unknown
        else:
            return False         # everything else, means no change in section

    def path_object_to_module_name(self, txt):
        """
        Parses path to object file and extracts module / object data
        """

        txt = txt.replace('\\', '/')
        rex_mbed_os_name = r'^.+mbed-os\/(.+)\/(.+\.o)$'
        test_rex_mbed_os_name = re.match(rex_mbed_os_name, txt)

        if test_rex_mbed_os_name:

            object_name = test_rex_mbed_os_name.group(2)
            data = test_rex_mbed_os_name.group(1).split('/')
            ndata = len(data)

            if ndata == 1:
                module_name = data[0]
            else:
                module_name = data[0] + '/' + data[1]

            return [module_name, object_name]
        else:
            return ['Misc', ""]


    def parse_section_gcc(self, line):
        """
        Parse data from a section of gcc map file
        """
        # examples
        #                 0x00004308       0x7c ./.build/K64F/GCC_ARM/mbed-os/hal/targets/hal/TARGET_Freescale/TARGET_KPSDK_MCUS/spi_api.o
        #  .text          0x00000608      0x198 ./.build/K64F/GCC_ARM/mbed-os/core/mbed-rtos/rtx/TARGET_CORTEX_M/TARGET_RTOS_M4_M7/TOOLCHAIN_GCC/HAL_CM4.o
        rex_address_len_name = r'^\s+.*0x(\w{8,16})\s+0x(\w+)\s(.+)$'

        test_address_len_name = re.match(rex_address_len_name, line)

        if test_address_len_name:

            if int(test_address_len_name.group(2), 16) == 0: # size == 0
                return ["", 0] # no valid entry
            else:
                m_name, m_object = self.path_object_to_module_name(test_address_len_name.group(3))
                m_size = int(test_address_len_name.group(2), 16)
                return [m_name, m_size]

        else: # special corner case for *fill* sections
            #  example
            # *fill*         0x0000abe4        0x4
            rex_address_len = r'^\s+\*fill\*\s+0x(\w{8,16})\s+0x(\w+).*$'
            test_address_len = re.match(rex_address_len, line)

            if test_address_len:
                if int(test_address_len.group(2), 16) == 0: # size == 0
                    return ["", 0] # no valid entry
                else:
                    m_name = 'Fill'
                    m_size = int(test_address_len.group(2), 16)
                    return [m_name, m_size]
            else:
                return ["", 0] # no valid entry

    def parse_map_file_gcc(self, file_desc):
        """
        Main logic to decode gcc map files
        """

        current_section = 'unknown'

        with file_desc as infile:

            # Search area to parse
            for line in infile:
                if line.startswith('Linker script and memory map'):
                    current_section = "unknown"
                    break

            # Start decoding the map file
            for line in infile:

                change_section = self.check_new_section_gcc(line)

                if change_section == "OUTPUT": # finish parsing file: exit
                    break
                elif change_section != False:
                    current_section = change_section

                [module_name, module_size] = self.parse_section_gcc(line)

                if module_size == 0 or module_name == "":
                    pass
                else:
                    self.module_add(module_name, module_size, current_section)

                if debug:
                    print "Line: %s" % line,
                    print "Module: %s\tSection: %s\tSize: %s" % (module_name, current_section, module_size)
                    raw_input("----------")

    def parse_section_armcc(self, line):
        """
        Parse data from an armcc map file
        """
        # Examples of armcc map file:
        #     Base_Addr    Size         Type   Attr      Idx    E Section Name        Object
        #     0x00000000   0x00000400   Data   RO        11222    RESET               startup_MK64F12.o
        #     0x00000410   0x00000008   Code   RO        49364  * !!!main             c_w.l(__main.o)
        rex_armcc = r'^\s+0x(\w{8})\s+0x(\w{8})\s+(\w+)\s+(\w+)\s+(\d+)\s+[*]?.+\s+(.+)$'

        test_rex_armcc = re.match(rex_armcc, line)

        if test_rex_armcc:

            size = int(test_rex_armcc.group(2), 16)

            if test_rex_armcc.group(4) == 'RO':
                section = '.text'
            else:
                if test_rex_armcc.group(3) == 'Data':
                    section = '.data'
                elif test_rex_armcc.group(3) == 'Zero':
                    section = '.bss'
                else:
                    print "BUG armcc map parser"
                    raw_input()

            # lookup object in dictionary and return module name
            object_name = test_rex_armcc.group(6)
            if object_name in self.object_to_module:
                module_name = self.object_to_module[object_name]
            else:
                module_name = 'Misc'

            return [module_name, size, section]

        else:
            return ["", 0, ""] # no valid entry

    def parse_section_iar(self, line):
        """
        Parse data from an IAR map file
        """
        # Examples of IAR map file:
        #  Section             Kind        Address     Size  Object
        #  .intvec             ro code  0x00000000    0x198  startup_MK64F12.o [15]
        #  .rodata             const    0x00000198      0x0  zero_init3.o [133]
        #  .iar.init_table     const    0x00008384     0x2c  - Linker created -
        #  Initializer bytes   const    0x00000198     0xb2  <for P3 s0>
        #  .data               inited   0x20000000     0xd4  driverAtmelRFInterface.o [70]
        #  .bss                zero     0x20000598    0x318  RTX_Conf_CM.o [4]
        #  .iar.dynexit        uninit   0x20001448    0x204  <Block tail>
        #    HEAP              uninit   0x20001650  0x10000  <Block tail>
        rex_iar = r'^\s+(.+)\s+(zero|const|ro code|inited|uninit)\s+0x(\w{8})\s+0x(\w+)\s+(.+)\s.+$'

        test_rex_iar = re.match(rex_iar, line)

        if test_rex_iar:

            size = int(test_rex_iar.group(4), 16)

            if test_rex_iar.group(2) == 'const' or test_rex_iar.group(2) == 'ro code':
                section = '.text'
            elif test_rex_iar.group(2) == 'zero' or test_rex_iar.group(2) == 'uninit':
                if test_rex_iar.group(1)[0:4] == 'HEAP':
                    section = '.heap'
                elif test_rex_iar.group(1)[0:6] == 'CSTACK':
                    section = '.stack'
                else:
                    section = '.bss' #  default section

            elif test_rex_iar.group(2) == 'inited':
                section = '.data'
            else:
                print "BUG IAR map parser"
                raw_input()

            # lookup object in dictionary and return module name
            object_name = test_rex_iar.group(5)
            if object_name in self.object_to_module:
                module_name = self.object_to_module[object_name]
            else:
                module_name = 'Misc'

            return [module_name, size, section]

        else:
            return ["", 0, ""] # no valid entry

    def parse_map_file_armcc(self, file_desc):
        """
        Main logic to decode armcc map files
        """

        with file_desc as infile:

            # Search area to parse
            for line in infile:
                if line.startswith('    Base Addr    Size'):
                    break

            # Start decoding the map file
            for line in infile:

                [name, size, section] = self.parse_section_armcc(line)

                if size == 0 or name == "" or section == "":
                    pass
                else:
                    self.module_add(name, size, section)

    def parse_map_file_iar(self, file_desc):
        """
        Main logic to decode armcc map files
        """

        with file_desc as infile:

            # Search area to parse
            for line in infile:
                if line.startswith('  Section  '):
                    break

            # Start decoding the map file
            for line in infile:

                [name, size, section] = self.parse_section_iar(line)

                if size == 0 or name == "" or section == "":
                    pass
                else:
                    self.module_add(name, size, section)

    def search_objects(self, path, toolchain):
        """
        Check whether the specified map file matches with the toolchain.
        Searches for object files and creates mapping: object --> module
        """

        path = path.replace('\\', '/')

        # check location of map file
        rex = r'^(.+\/)' + re.escape(toolchain) + r'\/(.+\.map)$'
        test_rex = re.match(rex, path)

        if test_rex:
            search_path = test_rex.group(1) + toolchain + '/mbed-os/'
        else:
            # It looks this is not an mbed OS project
            # object-to-module mapping cannot be generated
            print "Warning: specified toolchain doesn't match with path to the memory map file."
            return

        for root, dir, obj_files in os.walk(search_path):
            for obj_file in obj_files:
                if obj_file.endswith(".o"):
                    module_name, object_name = self.path_object_to_module_name(os.path.join(root, obj_file))

                    if object_name in self.object_to_module:
                        if debug:
                            print "WARNING: multiple usages of object file: %s" % object_name
                            print "    Current: %s" % self.object_to_module[object_name]
                            print "    New:     %s" % module_name
                            print " "
                    else:
                        self.object_to_module.update({object_name:module_name})

    def generate_output(self, export_format, file_output=None):
        """
        Generates summary of memory map data

        Parameters
            json_mode: generates output in json formal (True/False)
            file_desc: descriptor (either stdout or file)
        """

        try:
            if file_output:
                file_desc = open(file_output, 'wb')
            else:
                file_desc = sys.stdout
        except IOError as error:
            print "I/O error({0}): {1}".format(error.errno, error.strerror)
            return False

        # Calculate misc flash sections
        misc_flash_mem = 0
        for i in self.modules:
            for k in self.misc_flash_sections:
                if self.modules[i][k]:
                    misc_flash_mem += self.modules[i][k]

        # Create table
        columns = ['Module']
        for i in list(self.print_sections):
            columns.append(i)

        table = PrettyTable(columns)
        table.align["Module"] = "l"

        subtotal = dict()
        for k in self.sections:
            subtotal[k] = 0

        json_obj = []
        for i in sorted(self.modules):

            row = []
            row.append(i)

            for k in self.sections:
                subtotal[k] += self.modules[i][k]

            for k in self.print_sections:
                row.append(self.modules[i][k])

            json_obj.append({"module":i, "size":{\
                k:self.modules[i][k] for k in self.print_sections}})

            table.add_row(row)

        subtotal_row = ['Subtotals']
        for k in self.print_sections:
            subtotal_row.append(subtotal[k])

        table.add_row(subtotal_row)

        if export_format == 'json':
            json_obj.append({\
                  'summary':{\
                  'static_ram':(subtotal['.data']+subtotal['.bss']),\
                  'heap':(subtotal['.heap']),\
                  'stack':(subtotal['.stack']),\
                  'total_ram':(subtotal['.data']+subtotal['.bss']+subtotal['.heap']+subtotal['.stack']),\
                  'total_flash':(subtotal['.text']+subtotal['.data']+misc_flash_mem),}})

            file_desc.write(json.dumps(json_obj, indent=4))
            file_desc.write('\n')

        elif export_format == 'csv-ci': # CSV format for the CI system

            csv_writer = csv.writer(file_desc, delimiter=',', quoting=csv.QUOTE_NONE)

            csv_module_section = []
            csv_sizes = []
            for i in sorted(self.modules):
                for k in self.print_sections:
                    csv_module_section += [i+k]
                    csv_sizes += [self.modules[i][k]]

            csv_module_section += ['static_ram']
            csv_sizes += [subtotal['.data']+subtotal['.bss']]

            csv_module_section += ['heap']
            csv_sizes += [subtotal['.heap']]

            csv_module_section += ['stack']
            csv_sizes += [subtotal['.stack']]

            csv_module_section += ['total_ram']
            csv_sizes += [subtotal['.data']+subtotal['.bss']+subtotal['.heap']+subtotal['.stack']]

            csv_module_section += ['total_flash']
            csv_sizes += [subtotal['.text']+subtotal['.data']+misc_flash_mem]

            csv_writer.writerow(csv_module_section)
            csv_writer.writerow(csv_sizes)

        else: # default format is 'table'
            file_desc.write(table.get_string())
            file_desc.write('\n')
            file_desc.write("Static RAM memory (data + bss): %s\n" % (str(subtotal['.data']+subtotal['.bss'])))
            file_desc.write("Heap: %s\n" % str(subtotal['.heap']))
            file_desc.write("Stack: %s\n" % str(subtotal['.stack']))
            file_desc.write("Total RAM memory (data + bss + heap + stack): %s\n" % (str(subtotal['.data']+subtotal['.bss']+subtotal['.heap']+subtotal['.stack'])))
            file_desc.write("Total Flash memory (text + data + misc): %s\n" % (str(subtotal['.text']+subtotal['.data']+misc_flash_mem)))

        if file_desc is not sys.stdout:
            file_desc.close()

        return True

    def parse(self, mapfile, toolchain):
        """
        Parse and decode map file depending on the toolchain
        """

        try:
            file_input = open(mapfile, 'rt')
        except IOError as error:
            print "I/O error({0}): {1}".format(error.errno, error.strerror)
            return False

        if toolchain == "ARM" or toolchain == "ARM_STD" or toolchain == "ARM_MICRO":
            self.search_objects(os.path.abspath(mapfile), "ARM")
            self.parse_map_file_armcc(file_input)
        elif toolchain == "GCC_ARM":
            self.parse_map_file_gcc(file_input)
        elif toolchain == "IAR":
            self.search_objects(os.path.abspath(mapfile), toolchain)
            self.parse_map_file_iar(file_input)
        else:
            return False

        file_input.close()

        return True

def main():

    version = '0.3.10'

    # Parser handling
    parser = argparse.ArgumentParser(description="Memory Map File Analyser for ARM mbed OS\nversion %s" % version)

    parser.add_argument('file', help='memory map file')

    parser.add_argument('-t', '--toolchain', dest='toolchain', help='select a toolchain used to build the memory map file (ARM, GCC_ARM, IAR)',\
                        required=True)

    parser.add_argument('-o', '--output', help='output file name', required=False)

    parser.add_argument('-e', '--export', dest='export', required=False,\
                        help="export format (examples: 'json', 'csv-ci', 'table': default)")

    parser.add_argument('-v', '--version', action='version', version=version)

    # Parse/run command
    if len(sys.argv) <= 1:
        parser.print_help()
        sys.exit(1)


    args, remainder = parser.parse_known_args()

    # Create memap object
    memap = MemapParser()

    # Parse and decode a map file
    if args.file and args.toolchain:
        if memap.parse(args.file, args.toolchain) is False:
            print "Unknown toolchain for memory statistics %s" %  args.toolchain
            sys.exit(0)

    # default export format is table
    if not args.export:
        args.export = 'table'

    # Write output in file
    if args.output != None:
        memap.generate_output(args.export, args.output)
    else: # Write output in screen
        memap.generate_output(args.export)

    sys.exit(0)

if __name__ == "__main__":
    main()