added syntax checking for .asm and .s files using gcc

plugin/syntastic/registry.vim

@@ -8,6 +8,7 @@ let s:defaultCheckers = {
         \ 'ada':         ['gcc'],
         \ 'applescript': ['osacompile'],
         \ 'asciidoc':    ['asciidoc'],
+        \ 'asm':         ['gcc'],
         \ 'bemhtml':     ['bemhtmllint'],
         \ 'c':           ['gcc'],
         \ 'chef':        ['foodcritic'],

syntax_checkers/asm/gcc.vim

@@ -0,0 +1,69 @@
+"============================================================================
+"File:        gcc.vim
+"Description: Syntax checking for at&t and intel assembly files with gcc
+"Maintainer:  Josh Rahm <joshuarahm@gmail.com>
+"License:     This program is free software. It comes without any warranty,
+"             to the extent permitted by applicable law. You can redistribute
+"             it and/or modify it under the terms of the Do What The Fuck You
+"             Want To Public License, Version 2, as published by Sam Hocevar.
+"             See http://sam.zoy.org/wtfpl/COPYING for more details.
+"
+"============================================================================
+
+if exists('g:loaded_syntastic_asm_gcc_checker')
+    finish
+endif
+let g:loaded_syntastic_asm_gcc_checker = 1
+
+let s:asm_extensions = {
+    \ 's': 'att',
+    \ 'asm': 'intel'
+    \ }
+
+if !exists('g:syntastic_asm_compiler')
+    let g:syntastic_asm_compiler = 'gcc'
+endif
+
+let s:save_cpo = &cpo
+set cpo&vim
+
+function! SyntaxCheckers_asm_gcc_IsAvailable() dict
+    return executable(expand(g:syntastic_asm_compiler))
+endfunction
+
+if !exists('g:syntastic_asm_options')
+    let g:syntastic_asm_options = ''
+endif
+
+function! SyntaxCheckers_asm_gcc_GetLocList() dict
+    let compiler_options = s:GetDialect() . ' ' . g:syntastic_asm_options
+
+    return syntastic#c#GetLocList('asm', 'gcc', {
+        \ 'errorformat':
+        \     '%-G%f:%s:,' .
+        \     '%f:%l:%c: %trror: %m,' .
+        \     '%f:%l:%c: %tarning: %m,' .
+        \     '%f:%l: %m',
+        \ 'main_flags': '-x assembler -fsyntax-only -masm=' . compiler_options , })
+endfunction
+
+function! s:GetDialect()
+    if exists('g:syntastic_asm_dialect')
+        return g:syntastic_asm_dialect
+    endif
+
+    let extensions = exists('g:syntastic_asm_extensions')
+        \ ? g:syntastic_asm_extensions : s:asm_extensions 
+    let dialect = get( extensions, tolower(expand('%:e')), 'att' )
+
+    return dialect
+endfunction
+
+call g:SyntasticRegistry.CreateAndRegisterChecker({
+    \ 'filetype': 'asm',
+    \ 'name': 'gcc'})
+
+let &cpo = s:save_cpo
+unlet s:save_cpo
+
+" vim: set et sts=4 sw=4: