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" Vim syntax file
" Language: GNU Assembler
" Maintainer: Erik Wognsen <erik.wognsen@gmail.com>
" Previous maintainer:
" Kevin Dahlhausen <kdahlhaus@yahoo.com>
" Last Change: 2014 Feb 04
" Thanks to Ori Avtalion for feedback on the comment markers!
" quit when a syntax file was already loaded
if exists("b:current_syntax")
finish
endif
let s:cpo_save = &cpo
set cpo&vim
syn case ignore
" storage types
syn match asmType "\.long"
syn match asmType "\.ascii"
syn match asmType "\.asciz"
syn match asmType "\.byte"
syn match asmType "\.double"
syn match asmType "\.float"
syn match asmType "\.hword"
syn match asmType "\.int"
syn match asmType "\.octa"
syn match asmType "\.quad"
syn match asmType "\.short"
syn match asmType "\.single"
syn match asmType "\.space"
syn match asmType "\.string"
syn match asmType "\.word"
syn match asmLabel "[a-z_][a-z0-9_]*:"he=e-1
syn match asmIdentifier "[a-z_][a-z0-9_]*"
" Various #'s as defined by GAS ref manual sec 3.6.2.1
" Technically, the first decNumber def is actually octal,
" since the value of 0-7 octal is the same as 0-7 decimal,
" I (Kevin) prefer to map it as decimal:
syn match decNumber "0\+[1-7]\=[\t\n$,; ]"
syn match decNumber "[1-9]\d*"
syn match octNumber "0[0-7][0-7]\+"
syn match hexNumber "0[xX][0-9a-fA-F]\+"
syn match binNumber "0[bB][0-1]*"
syn keyword asmTodo contained TODO
" GAS supports one type of multi line comments:
syn region asmComment start="/\*" end="\*/" contains=asmTodo
" GAS (undocumentedly?) supports C++ style comments. Unlike in C/C++ however,
" a backslash ending a C++ style comment does not extend the comment to the
" next line (hence the syntax region does not define 'skip="\\$"')
syn region asmComment start="//" end="$" keepend contains=asmTodo
" Line comment characters depend on the target architecture and command line
" options and some comments may double as logical line number directives or
" preprocessor commands. This situation is described at
" http://sourceware.org/binutils/docs-2.22/as/Comments.html
" Some line comment characters have other meanings for other targets. For
" example, .type directives may use the `@' character which is also an ARM
" comment marker.
" As a compromise to accommodate what I arbitrarily assume to be the most
" frequently used features of the most popular architectures (and also the
" non-GNU assembly languages that use this syntax file because their asm files
" are also named *.asm), the following are used as line comment characters:
syn match asmComment "[#;!|].*" contains=asmTodo
" Side effects of this include:
" - When `;' is used to separate statements on the same line (many targets
" support this), all statements except the first get highlighted as
" comments. As a remedy, remove `;' from the above.
" - ARM comments are not highlighted correctly. For ARM, uncomment the
" following two lines and comment the one above.
"syn match asmComment "@.*" contains=asmTodo
"syn match asmComment "^#.*" contains=asmTodo
" Advanced users of specific architectures will probably want to change the
" comment highlighting or use a specific, more comprehensive syntax file.
syn match asmInclude "\.include"
syn match asmCond "\.if"
syn match asmCond "\.else"
syn match asmCond "\.endif"
syn match asmMacro "\.macro"
syn match asmMacro "\.endm"
" Assembler directives start with a '.' and may contain upper case (e.g.,
" .ABORT), numbers (e.g., .p2align), dash (e.g., .app-file) and underscore in
" CFI directives (e.g., .cfi_startproc). This will also match labels starting
" with '.', including the GCC auto-generated '.L' labels.
syn match asmDirective "\.[A-Za-z][0-9A-Za-z-_]*"
syn case match
" Define the default highlighting.
" Only when an item doesn't have highlighting yet
" The default methods for highlighting. Can be overridden later
hi def link asmSection Special
hi def link asmLabel Label
hi def link asmComment Comment
hi def link asmTodo Todo
hi def link asmDirective Statement
hi def link asmInclude Include
hi def link asmCond PreCondit
hi def link asmMacro Macro
hi def link hexNumber Number
hi def link decNumber Number
hi def link octNumber Number
hi def link binNumber Number
hi def link asmIdentifier Identifier
hi def link asmType Type
let b:current_syntax = "asm"
let &cpo = s:cpo_save
unlet s:cpo_save
" vim: ts=8