X-Git-Url: https://oss.titaniummirror.com/gitweb?a=blobdiff_plain;f=gcc%2Fopth-gen.awk;fp=gcc%2Fopth-gen.awk;h=b84d1f2c52012665ae09fa8d6778b533f44b9f5e;hb=6fed43773c9b0ce596dca5686f37ac3fc0fa11c0;hp=0000000000000000000000000000000000000000;hpb=27b11d56b743098deb193d510b337ba22dc52e5c;p=msp430-gcc.git diff --git a/gcc/opth-gen.awk b/gcc/opth-gen.awk new file mode 100644 index 00000000..b84d1f2c --- /dev/null +++ b/gcc/opth-gen.awk @@ -0,0 +1,367 @@ +# Copyright (C) 2003,2004,2005,2006,2007,2008 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 +# . + +# 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_target_save = 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 if ($1 == "TargetSave") { + # Make sure the declarations are put in source order + target_save_decl[n_target_save] = $2 + n_target_save++ + } + else { + name = opt_args("Mask", $1) + if (name == "") { + opts[n_opts] = $1 + flags[n_opts] = $2 + help[n_opts] = $3 + n_opts++; + } + else { + extra_masks[n_extra_masks++] = name + } + } + } + +# Dump out an enumeration into a .h file. +# Combine the flags of duplicate options. +END { +print "/* This file is auto-generated by opth-gen.awk. */" +print "" +print "#ifndef OPTIONS_H" +print "#define OPTIONS_H" +print "" +print "extern int target_flags;" +print "extern int target_flags_explicit;" +print "" + +have_save = 0; + +for (i = 0; i < n_opts; i++) { + if (flag_set_p("Save", flags[i])) + have_save = 1; + + name = var_name(flags[i]); + if (name == "") + continue; + + if (name in var_seen) + continue; + + var_seen[name] = 1; + print "extern " var_type(flags[i]) name ";" +} +print "" + +# All of the optimization switches gathered together so they can be saved and restored. +# This will allow attribute((cold)) to turn on space optimization. + +# Change the type of normal switches from int to unsigned char to save space. +# Also, order the structure so that pointer fields occur first, then int +# fields, and then char fields to provide the best packing. + +print "#if !defined(GCC_DRIVER) && !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS)" +print "" +print "/* Structure to save/restore optimization and target specific options. */"; +print "struct cl_optimization GTY(())"; +print "{"; + +n_opt_char = 2; +n_opt_short = 0; +n_opt_int = 0; +n_opt_other = 0; +var_opt_char[0] = "unsigned char optimize"; +var_opt_char[1] = "unsigned char optimize_size"; + +for (i = 0; i < n_opts; i++) { + if (flag_set_p("Optimization", flags[i])) { + name = var_name(flags[i]) + if(name == "") + continue; + + if(name in var_opt_seen) + continue; + + var_opt_seen[name]++; + otype = var_type_struct(flags[i]); + if (otype ~ "^((un)?signed +)?int *$") + var_opt_int[n_opt_int++] = otype name; + + else if (otype ~ "^((un)?signed +)?short *$") + var_opt_short[n_opt_short++] = otype name; + + else if (otype ~ "^((un)?signed +)?char *$") + var_opt_char[n_opt_char++] = otype name; + + else + var_opt_other[n_opt_other++] = otype name; + } +} + +for (i = 0; i < n_opt_other; i++) { + print " " var_opt_other[i] ";"; +} + +for (i = 0; i < n_opt_int; i++) { + print " " var_opt_int[i] ";"; +} + +for (i = 0; i < n_opt_short; i++) { + print " " var_opt_short[i] ";"; +} + +for (i = 0; i < n_opt_char; i++) { + print " " var_opt_char[i] ";"; +} + +print "};"; +print ""; + +# Target and optimization save/restore/print functions. +print "/* Structure to save/restore selected target specific options. */"; +print "struct cl_target_option GTY(())"; +print "{"; + +n_target_char = 0; +n_target_short = 0; +n_target_int = 0; +n_target_other = 0; + +for (i = 0; i < n_target_save; i++) { + if (target_save_decl[i] ~ "^((un)?signed +)?int +[_a-zA-Z0-9]+$") + var_target_int[n_target_int++] = target_save_decl[i]; + + else if (target_save_decl[i] ~ "^((un)?signed +)?short +[_a-zA-Z0-9]+$") + var_target_short[n_target_short++] = target_save_decl[i]; + + else if (target_save_decl[i] ~ "^((un)?signed +)?char +[_a-zA-Z0-9]+$") + var_target_char[n_target_char++] = target_save_decl[i]; + + else + var_target_other[n_target_other++] = target_save_decl[i]; +} + +if (have_save) { + for (i = 0; i < n_opts; i++) { + if (flag_set_p("Save", flags[i])) { + name = var_name(flags[i]) + if(name == "") + name = "target_flags"; + + if(name in var_save_seen) + continue; + + var_save_seen[name]++; + otype = var_type_struct(flags[i]) + if (otype ~ "^((un)?signed +)?int *$") + var_target_int[n_target_int++] = otype name; + + else if (otype ~ "^((un)?signed +)?short *$") + var_target_short[n_target_short++] = otype name; + + else if (otype ~ "^((un)?signed +)?char *$") + var_target_char[n_target_char++] = otype name; + + else + var_target_other[n_target_other++] = otype name; + } + } +} else { + var_target_int[n_target_int++] = "int target_flags"; +} + +for (i = 0; i < n_target_other; i++) { + print " " var_target_other[i] ";"; +} + +for (i = 0; i < n_target_int; i++) { + print " " var_target_int[i] ";"; +} + +for (i = 0; i < n_target_short; i++) { + print " " var_target_short[i] ";"; +} + +for (i = 0; i < n_target_char; i++) { + print " " var_target_char[i] ";"; +} + +print "};"; +print ""; +print ""; +print "/* Save optimization variables into a structure. */" +print "extern void cl_optimization_save (struct cl_optimization *);"; +print ""; +print "/* Restore optimization variables from a structure. */"; +print "extern void cl_optimization_restore (struct cl_optimization *);"; +print ""; +print "/* Print optimization variables from a structure. */"; +print "extern void cl_optimization_print (FILE *, int, struct cl_optimization *);"; +print ""; +print "/* Save selected option variables into a structure. */" +print "extern void cl_target_option_save (struct cl_target_option *);"; +print ""; +print "/* Restore selected option variables from a structure. */" +print "extern void cl_target_option_restore (struct cl_target_option *);"; +print ""; +print "/* Print target option variables from a structure. */"; +print "extern void cl_target_option_print (FILE *, int, struct cl_target_option *);"; +print "#endif"; +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 "#define CL_LANG_ALL ((1 << " n_langs ") - 1)" + +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=" || opts[i] == "Wlarger-than=") + 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 */" +}