| # Copyright (C) 2003,2004,2005,2006,2007 Free Software Foundation, Inc. |
| # Contributed by Kelley Cook, June 2004. |
| # Original code from Neil Booth, May 2003. |
| # |
| # 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 3, 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 COPYING3. If not see |
| # <http://www.gnu.org/licenses/>. |
| |
| # This Awk script reads in the option records generated from |
| # opt-gather.awk, combines the flags of duplicate options and generates a |
| # C header file. |
| # |
| # This program uses functions from opt-functions.awk |
| # Usage: awk -f opt-functions.awk -f opth-gen.awk < inputfile > options.h |
| |
| BEGIN { |
| n_opts = 0 |
| n_langs = 0 |
| n_extra_masks = 0 |
| quote = "\042" |
| comma = "," |
| FS=SUBSEP |
| } |
| |
| # Collect the text and flags of each option into an array |
| { |
| if ($1 == "Language") { |
| langs[n_langs] = $2 |
| n_langs++; |
| } |
| else { |
| name = opt_args("Mask", $1) |
| if (name == "") { |
| opts[n_opts] = $1 |
| flags[n_opts] = $2 |
| help[n_opts] = $3 |
| n_opts++; |
| } |
| else { |
| extra_masks[n_extra_masks++] = name |
| } |
| } |
| } |
| |
| # Dump out an enumeration into a .h file. |
| # Combine the flags of duplicate options. |
| END { |
| print "/* This file is auto-generated by opth-gen.awk. */" |
| print "" |
| print "#ifndef OPTIONS_H" |
| print "#define OPTIONS_H" |
| print "" |
| print "extern int target_flags;" |
| print "" |
| |
| for (i = 0; i < n_opts; i++) { |
| name = var_name(flags[i]); |
| if (name == "") |
| continue; |
| |
| print "extern " var_type(flags[i]) name ";" |
| } |
| print "" |
| |
| for (i = 0; i < n_opts; i++) { |
| name = opt_args("Mask", flags[i]) |
| vname = var_name(flags[i]) |
| mask = "MASK_" |
| if (vname != "") { |
| mask = "OPTION_MASK_" |
| } |
| if (name != "" && !flag_set_p("MaskExists", flags[i])) |
| print "#define " mask name " (1 << " masknum[vname]++ ")" |
| } |
| for (i = 0; i < n_extra_masks; i++) { |
| print "#define MASK_" extra_masks[i] " (1 << " masknum[""]++ ")" |
| } |
| |
| for (var in masknum) { |
| if (masknum[var] > 31) { |
| if (var == "") |
| print "#error too many target masks" |
| else |
| print "#error too many masks for " var |
| } |
| } |
| print "" |
| |
| for (i = 0; i < n_opts; i++) { |
| name = opt_args("Mask", flags[i]) |
| vname = var_name(flags[i]) |
| macro = "OPTION_" |
| mask = "OPTION_MASK_" |
| if (vname == "") { |
| vname = "target_flags" |
| macro = "TARGET_" |
| mask = "MASK_" |
| } |
| if (name != "" && !flag_set_p("MaskExists", flags[i])) |
| print "#define " macro name \ |
| " ((" vname " & " mask name ") != 0)" |
| } |
| for (i = 0; i < n_extra_masks; i++) { |
| print "#define TARGET_" extra_masks[i] \ |
| " ((target_flags & MASK_" extra_masks[i] ") != 0)" |
| } |
| print "" |
| |
| for (i = 0; i < n_opts; i++) { |
| opt = opt_args("InverseMask", flags[i]) |
| if (opt ~ ",") { |
| vname = var_name(flags[i]) |
| macro = "OPTION_" |
| mask = "OPTION_MASK_" |
| if (vname == "") { |
| vname = "target_flags" |
| macro = "TARGET_" |
| mask = "MASK_" |
| } |
| print "#define " macro nth_arg(1, opt) \ |
| " ((" vname " & " mask nth_arg(0, opt) ") == 0)" |
| } |
| } |
| print "" |
| |
| for (i = 0; i < n_langs; i++) { |
| macros[i] = "CL_" langs[i] |
| gsub( "[^A-Za-z0-9_]", "X", macros[i] ) |
| s = substr(" ", length (macros[i])) |
| print "#define " macros[i] s " (1 << " i ")" |
| } |
| |
| print "" |
| print "enum opt_code" |
| print "{" |
| |
| for (i = 0; i < n_opts; i++) |
| back_chain[i] = "N_OPTS"; |
| |
| for (i = 0; i < n_opts; i++) { |
| # Combine the flags of identical switches. Switches |
| # appear many times if they are handled by many front |
| # ends, for example. |
| while( i + 1 != n_opts && opts[i] == opts[i + 1] ) { |
| flags[i + 1] = flags[i] " " flags[i + 1]; |
| i++; |
| } |
| |
| len = length (opts[i]); |
| enum = "OPT_" opts[i] |
| if (opts[i] == "finline-limit=") |
| enum = enum "eq" |
| gsub ("[^A-Za-z0-9]", "_", enum) |
| |
| # If this switch takes joined arguments, back-chain all |
| # subsequent switches to it for which it is a prefix. If |
| # a later switch S is a longer prefix of a switch T, T |
| # will be back-chained to S in a later iteration of this |
| # for() loop, which is what we want. |
| if (flag_set_p("Joined.*", flags[i])) { |
| for (j = i + 1; j < n_opts; j++) { |
| if (substr (opts[j], 1, len) != opts[i]) |
| break; |
| back_chain[j] = enum; |
| } |
| } |
| |
| s = substr(" ", length (opts[i])) |
| if (i + 1 == n_opts) |
| comma = "" |
| |
| if (help[i] == "") |
| hlp = "0" |
| else |
| hlp = "N_(\"" help[i] "\")"; |
| |
| print " " enum "," s "/* -" opts[i] " */" |
| } |
| |
| print " N_OPTS" |
| print "};" |
| print "" |
| print "#endif /* OPTIONS_H */" |
| } |