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+;;; ld-script.el --- GNU linker script editing mode for Emacs
+
+;; Copyright (C) 2003 Free Software Foundation, Inc.
+
+;; Author: Masatake YAMATO<jet@gyve.org>
+;; Keywords: languages, faces
+
+;; This file is part of GNU Emacs.
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 2, or (at your option)
+;; any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program; see the file COPYING.  If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Commentary:
+
+;; Major mode for editing GNU linker (ld) scripts.
+
+;;; Code:
+
+;; Custom
+(defgroup ld-script nil
+  "GNU linker script code editing commands for Emacs."
+  :prefix "ld-script-"
+  :group 'languages)
+
+(defvar ld-script-location-counter-face 'ld-script-location-counter-face)
+(defface ld-script-location-counter-face
+  '((t (:weight bold :inherit font-lock-builtin-face)))
+  "Face for location counter in GNU ld script."
+  :group 'ld-script)
+
+;; Syntax rules
+(defvar ld-script-mode-syntax-table
+  (let ((st (make-syntax-table)))
+    (modify-syntax-entry ?\  "-"   st)
+    (modify-syntax-entry ?{ "(}" st)
+    (modify-syntax-entry ?} "){" st)
+    (modify-syntax-entry ?\( "()" st)
+    (modify-syntax-entry ?\) ")(" st)
+    (modify-syntax-entry ?\[ "(]" st)
+    (modify-syntax-entry ?\] ")[" st)
+    (modify-syntax-entry ?_ "w"   st)
+    (modify-syntax-entry ?. "_"   st)
+    (modify-syntax-entry ?\\  "\\" st)
+    (modify-syntax-entry ?: "." st)
+    (modify-syntax-entry ?, "." st)
+    (modify-syntax-entry ?? "." st)
+    (modify-syntax-entry ?= "." st)
+    (modify-syntax-entry ?* ". 23" st)
+    (modify-syntax-entry ?/ ". 14" st)
+    (modify-syntax-entry ?+ "." st)
+    (modify-syntax-entry ?- "." st)
+    (modify-syntax-entry ?! "." st)
+    (modify-syntax-entry ?~ "." st)
+    (modify-syntax-entry ?% "." st)
+    (modify-syntax-entry ?< "." st)
+    (modify-syntax-entry ?> "." st)
+    (modify-syntax-entry ?& "." st)
+    (modify-syntax-entry ?| "." st)
+    (modify-syntax-entry ?\" "\"" st)
+    st)
+  "Syntax table used while in `ld-script-mode'.")
+
+;; Font lock keywords
+(defvar ld-script-keywords
+  '("ENTRY" "INCLUDE" "INPUT" "GROUP"
+    "OUTPUT" "SEARCH_DIR" "STARTUP"
+    "OUTPUT_FORMAT" "TARGET"
+    "ASSERT" "EXTERN" "FORCE_COMMON_ALLOCATION" "NOCROSSREFS" "OUTPUT_ARCH"
+    "PROVIDE"
+    "SECTIONS" "SORT" "COMMON" "KEEP"
+    "BYTE" "SHORT" "LONG" "QUAD" "SQAD"
+    "FILL"
+    "CREATE_OBJECT_SYMBOLS"
+    "CONSTRUCTORS"
+    "NOLOAD" "DSECT" "COPY" "INFO" "OVERLAY"
+    "AT"
+    "MEMORY"
+    "PHDRS" "FILEHDR" "FLAGS"
+    "PT_NULL" "PT_LOAD" "PT_DYNAMIC" "PT_INTERP" "PT_NONE" "PT_SHLIB" "PT_PHDR"
+    "VERSION")
+  "Keywords used of GNU ld script.")
+
+(defvar ld-script-builtins
+  '("ABSOLUTE"
+    "ADDR"
+    "ALIGN"
+    "BLOCK"
+    "DEFINED"
+    "LOADADDR"
+    "MAX"
+    "MIN"
+    "NEXT"
+    "SIZEOF"
+    "SIZEOF_HEADERS"
+    "sizeof_headers")
+  "Builtin functions of GNU ld script.")
+
+(defvar ld-script-font-lock-keywords
+  `((,(regexp-opt ld-script-keywords 'words)
+     1 font-lock-keyword-face)
+    (,(regexp-opt ld-script-builtins 'words)
+     1 font-lock-builtin-face)
+    ("/DISCARD/" . font-lock-warning-face)
+    ("##\\|#[^#\n]+$"  . font-lock-preprocessor-face)
+    ("\\W\\(\\.\\)\\W" 1 ld-script-location-counter-face)
+    )
+  "Default font-lock-keywords for `ld-script-mode'.")
+
+;;;###autoload
+(add-to-list 'auto-mode-alist '("\\.lds" . ld-script-mode))
+
+;;;###autoload
+(define-derived-mode ld-script-mode nil "LD-Script"
+   "A major mode to edit GNU ld script files"
+  (set (make-local-variable 'comment-start) "/* ")
+  (set (make-local-variable 'comment-end)   " */")
+  (set (make-local-variable 'indent-line-function) #'indent-relative)
+  (set (make-local-variable 'font-lock-defaults) '(ld-script-font-lock-keywords nil)))
+
+(provide 'ld-script)
+
+;;; arch-tag: 83280b6b-e6fc-4d00-a630-922d7aec5593
+;;; ld-script.el ends here