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1 " Vim syntax file
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2 " Language: GNU Assembler
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3 " Maintainer: Erik Wognsen <erik.wognsen@gmail.com>
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4 " Previous maintainer:
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5 " Kevin Dahlhausen <kdahlhaus@yahoo.com>
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6 " Last Change: 2012 Apr 09
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7
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8 " Thanks to Ori Avtalion for feedback on the comment markers!
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9
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10 " For version 5.x: Clear all syntax items
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11 " For version 6.0 and later: Quit when a syntax file was already loaded
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12 if version < 600
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13 syntax clear
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14 elseif exists("b:current_syntax")
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15 finish
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16 endif
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17
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18 let s:cpo_save = &cpo
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19 set cpo&vim
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20
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21 syn case ignore
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22
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23 " storage types
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24 syn match asmType "\.long"
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25 syn match asmType "\.ascii"
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26 syn match asmType "\.asciz"
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27 syn match asmType "\.byte"
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28 syn match asmType "\.double"
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29 syn match asmType "\.float"
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30 syn match asmType "\.hword"
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31 syn match asmType "\.int"
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32 syn match asmType "\.octa"
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33 syn match asmType "\.quad"
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34 syn match asmType "\.short"
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35 syn match asmType "\.single"
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36 syn match asmType "\.space"
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37 syn match asmType "\.string"
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38 syn match asmType "\.word"
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39
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40 syn match asmLabel "[a-z_][a-z0-9_]*:"he=e-1
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41 syn match asmIdentifier "[a-z_][a-z0-9_]*"
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42
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43 " Various #'s as defined by GAS ref manual sec 3.6.2.1
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44 " Technically, the first decNumber def is actually octal,
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45 " since the value of 0-7 octal is the same as 0-7 decimal,
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46 " I (Kevin) prefer to map it as decimal:
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47 syn match decNumber "0\+[1-7]\=[\t\n$,; ]"
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48 syn match decNumber "[1-9]\d*"
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49 syn match octNumber "0[0-7][0-7]\+"
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50 syn match hexNumber "0[xX][0-9a-fA-F]\+"
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51 syn match binNumber "0[bB][0-1]*"
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52
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53 syn keyword asmTodo contained TODO
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54
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55
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56 " GAS supports one type of multi line comments:
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57 syn region asmComment start="/\*" end="\*/" contains=asmTodo
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58
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59 " GAS (undocumentedly?) supports C++ style comments. Unlike in C/C++ however,
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60 " a backslash ending a C++ style comment does not extend the comment to the
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61 " next line (hence the syntax region does not define 'skip="\\$"')
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62 syn region asmComment start="//" end="$" keepend contains=asmTodo
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63
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64 " Line comment characters depend on the target architecture and command line
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65 " options and some comments may double as logical line number directives or
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66 " preprocessor commands. This situation is described at
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67 " http://sourceware.org/binutils/docs-2.22/as/Comments.html
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68 " Some line comment characters have other meanings for other targets. For
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69 " example, .type directives may use the `@' character which is also an ARM
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70 " comment marker.
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71 " As a compromise to accommodate what I arbitrarily assume to be the most
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72 " frequently used features of the most popular architectures (and also the
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73 " non-GNU assembly languages that use this syntax file because their asm files
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74 " are also named *.asm), the following are used as line comment characters:
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75 syn match asmComment "[#;!|].*" contains=asmTodo
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76
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77 " Side effects of this include:
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78 " - When `;' is used to separate statements on the same line (many targets
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79 " support this), all statements except the first get highlighted as
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80 " comments. As a remedy, remove `;' from the above.
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81 " - ARM comments are not highlighted correctly. For ARM, uncomment the
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82 " following two lines and comment the one above.
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83 "syn match asmComment "@.*" contains=asmTodo
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84 "syn match asmComment "^#.*" contains=asmTodo
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85
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86 " Advanced users of specific architectures will probably want to change the
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87 " comment highlighting or use a specific, more comprehensive syntax file.
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88
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89 syn match asmInclude "\.include"
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90 syn match asmCond "\.if"
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91 syn match asmCond "\.else"
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92 syn match asmCond "\.endif"
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93 syn match asmMacro "\.macro"
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94 syn match asmMacro "\.endm"
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95
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96 syn match asmDirective "\.[a-z][a-z]\+"
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97
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98
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99 syn case match
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100
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101 " Define the default highlighting.
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102 " For version 5.7 and earlier: only when not done already
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103 " For version 5.8 and later: only when an item doesn't have highlighting yet
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104 if version >= 508 || !exists("did_asm_syntax_inits")
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105 if version < 508
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106 let did_asm_syntax_inits = 1
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107 command -nargs=+ HiLink hi link <args>
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108 else
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109 command -nargs=+ HiLink hi def link <args>
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110 endif
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111
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112 " The default methods for highlighting. Can be overridden later
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113 HiLink asmSection Special
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114 HiLink asmLabel Label
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115 HiLink asmComment Comment
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116 HiLink asmTodo Todo
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117 HiLink asmDirective Statement
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118
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119 HiLink asmInclude Include
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120 HiLink asmCond PreCondit
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121 HiLink asmMacro Macro
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122
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123 HiLink hexNumber Number
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124 HiLink decNumber Number
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125 HiLink octNumber Number
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126 HiLink binNumber Number
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127
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128 HiLink asmIdentifier Identifier
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129 HiLink asmType Type
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130
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131 delcommand HiLink
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132 endif
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133
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134 let b:current_syntax = "asm"
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135
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136 let &cpo = s:cpo_save
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137 unlet s:cpo_save
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138
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139 " vim: ts=8
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