This is a sublime-syntax file for *Sublime Text 3* which highlights the MAP FILE generated by Keil MDK-ARM, you can just put it into Packages/User folder to apply it :-)

map.sublime-syntax

%YAML 1.2
---
# See http://www.sublimetext.com/docs/3/syntax.html
name: ARM Map
file_extensions:
  - map
scope: text.map

# first_line_match: 

variables:
  file_path: '[-\w\:\.\/\\]+'
  obj_file: '[\w\.]+\.o'
  func_name: '[_a-zA-Z]\w*'
  symbol_ref: '[~\$\.\:\w]+'
  # match string that contains word,parentheses,point,space
  # and don't contain continuous two spaces
  one_spc_name: '([a-zA-Z\.\(\)]+ ?)+'
  hex: '0[x|X][0-9a-fA-F]+'
  number: '\d+'

contexts:
  # The prototype context is prepended to all contexts but those setting
  # meta_include_prototype: false.
  # prototype:
    # - include: comments

  main:
    # The main context is the initial starting point of our syntax.
    # Include other contexts from here (or specify them directly).
    - match: '.+\n'
      scope: comment.block
      push: body


  body:
    # match the body of map file
    - match: '^=+$'
      scope: comment.line
      push:
        - match: '^Section Cross References$'
          scope: entity.name.namespace
          push: references
        - match: '^(Removing Unused input sections).+$'
          captures:
            1: entity.name.namespace
          push: remove_comments
        - match: '^Image Symbol Table$'
          scope: entity.name.namespace
          push: symbol_table
        - match: '^Memory Map.+$'
          scope: entity.name.namespace
          push: memory_map
        - match: '^Image component sizes.*$'
          scope: entity.name.namespace
          push: component_sizes

  references:
    - include: symbol_ref

    - match: \brefers\b
      scope: keyword.operator.word
    - match: \bto\b
      scope: keyword.operator.word
    - match: \bfor\b
      scope: keyword.operator.word

    - match: '{{func_name}}'
      scope: string

    - match: '^=+$'
      scope: comment.line
      pop: true

  symbol_ref:
    - match: '{{obj_file}}'
      scope: variable.other.constant
      push:
        - match: '\(({{symbol_ref}})\)'
          captures:
            1: variable.parameter
          pop: true

  remove_comments:
    - match: 'Removing.+$'
      scope: comment.block
    - match: '=+$'
      scope: comment.line
      pop: true

  symbol_table:
    - match: '^ *{{one_spc_name}}$'
      scope: entity.name.section

    - include: table_header

    - match: '^ *(({{symbol_ref}})|({{file_path}})|(!!!?\w+)) +
      ({{hex}}) +(([a-zA-Z\.\(\)]+ ?)+) {2,}({{number}}) {2,}(\S+)( \S+)?$'
      captures:
        2: entity.name.class
        3: entity.name.class
        4: keyword.important
        5: constant.numeric.hex
        6: storage.type
        8: constant.numeric.integer
        9: entity.name.class
        10: variable.parameter
    - match: '^=+$'
      scope: comment.line
      pop: true

  memory_map:
    - match: '^(\s*\w+ Region \w+) *\(.+\)$'
      captures:
        1: entity.name.section

    - include: table_header

    - match: '^ *({{hex}}) +({{hex}}) +(\S+) +(\S+) +
      ({{number}}) +(\*? +)(\S+) +(\S+) *$'
      captures:
        1: constant.numeric.hex
        2: constant.numeric.hex
        3: storage.type
        4: entity.other.attribute-name
        5: constant.numeric.integer
        7: variable.parameter
        8: entity.name.class
    - match: ' *({{hex}}) +({{hex}}) +(\S+) *$'
      captures:
        1: constant.numeric.hex
        2: constant.numeric.hex
        3: storage.type 
    - match: '^=+$'
      scope: comment.line
      pop: true


  component_sizes:
    - include: image_size_section
    - match: '=+$'
      scope: comment.line
      push: tail_2

  image_size_section:
    - include: table_header

    - match: ' *({{number}}) +({{number}}) +({{number}}) +
      ({{number}}) +({{number}}) +({{number}}) +'
      captures:
        1: constant.numeric.integer
        2: constant.numeric.integer
        3: constant.numeric.integer
        4: constant.numeric.integer
        5: constant.numeric.integer
        6: constant.numeric.integer
      push: 
        - match: '{{obj_file}} *$'
          scope: entity.name.class
          pop: true
        - match: '.+$'
          scope: entity.name
          pop: true
    - match: ' *-+$'
      scope: comment.line

  table_header:
    - match: '^ *({{one_spc_name}}( {2,})?)+$'
      scope: entity.name.struct

  tail_2:
    - include: image_size_section
    - match: '^=+$'
      scope: comment.line
      push: tail_1

  tail_1:
    - match: '^ *(Total +\w+ +Size)[\([a-zA-Z]\+\) ]+
      ({{number}}) *\( *([0-9\.]+\wB) *\)$'
      captures:
        1: keyword.summary
        2: keyword.number
        3: keyword.number
    - match: '^=+$'
      scope: comment.line
      pop: true