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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [optc-gen.awk] - Rev 696
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# Copyright (C) 2003, 2004, 2007, 2008, 2009, 2010, 2011 # 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 file. # # This program uses functions from opt-functions.awk and code from # opt-read.awk. # # Usage: awk -f opt-functions.awk -f opt-read.awk -f optc-gen.awk \ # [-v header_name=header.h] < inputfile > options.c # Dump that array of options into a C file. END { print "/* This file is auto-generated by optc-gen.awk. */" print "" n_headers = split(header_name, headers, " ") for (i = 1; i <= n_headers; i++) print "#include " quote headers[i] quote print "#include " quote "opts.h" quote print "#include " quote "intl.h" quote print "#include " quote "insn-attr-common.h" quote print "" if (n_extra_c_includes > 0) { for (i = 0; i < n_extra_c_includes; i++) { print "#include " quote extra_c_includes[i] quote } print "" } for (i = 0; i < n_enums; i++) { name = enum_names[i] type = enum_type[name] print "static const struct cl_enum_arg cl_enum_" name \ "_data[] = " print "{" print enum_data[name] " { NULL, 0, 0 }" print "};" print "" print "static void" print "cl_enum_" name "_set (void *var, int value)" print "{" print " *((" type " *) var) = (" type ") value;" print "}" print "" print "static int" print "cl_enum_" name "_get (const void *var)" print "{" print " return (int) *((const " type " *) var);" print "}" print "" } print "const struct cl_enum cl_enums[] =" print "{" for (i = 0; i < n_enums; i++) { name = enum_names[i] ehelp = enum_help[name] if (ehelp == "") ehelp = "NULL" else ehelp = quote ehelp quote unknown_error = enum_unknown_error[name] if (unknown_error == "") unknown_error = "NULL" else unknown_error = quote unknown_error quote print " {" print " " ehelp "," print " " unknown_error "," print " cl_enum_" name "_data," print " sizeof (" enum_type[name] ")," print " cl_enum_" name "_set," print " cl_enum_" name "_get" print " }," } print "};" print "const unsigned int cl_enums_count = " n_enums ";" print "" print "const struct gcc_options global_options_init =\n{" for (i = 0; i < n_extra_vars; i++) { var = extra_vars[i] init = extra_vars[i] if (var ~ "=" ) { sub(".*= *", "", init) } else { init = "0" } sub(" *=.*", "", var) name = var sub("^.*[ *]", "", name) sub("\\[.*\\]$", "", name) var_seen[name] = 1 print " " init ", /* " name " */" } for (i = 0; i < n_opts; i++) { name = var_name(flags[i]); if (name == "") continue; init = opt_args("Init", flags[i]) if (init != "") { if (name in var_init && var_init[name] != init) print "#error multiple initializers for " name var_init[name] = init } } for (i = 0; i < n_opts; i++) { name = var_name(flags[i]); if (name == "") continue; if (name in var_seen) continue; if (name in var_init) init = var_init[name] else init = "0" print " " init ", /* " name " */" var_seen[name] = 1; } for (i = 0; i < n_opts; i++) { name = static_var(opts[i], flags[i]); if (name != "") { print " 0, /* " name " (private state) */" print "#undef x_" name } } for (i = 0; i < n_opts; i++) { if (flag_set_p("SetByCombined", flags[i])) print " false, /* frontend_set_" var_name(flags[i]) " */" } print "};" print "" print "struct gcc_options global_options;" print "struct gcc_options global_options_set;" print "" print "const char * const lang_names[] =\n{" for (i = 0; i < n_langs; i++) { macros[i] = "CL_" langs[i] gsub( "[^" alnum "_]", "X", macros[i] ) s = substr(" ", length (macros[i])) print " " quote langs[i] quote "," } print " 0\n};\n" print "const unsigned int cl_options_count = N_OPTS;\n" print "#if (1U << " n_langs ") > CL_MIN_OPTION_CLASS" print " #error the number of languages exceeds the implementation limit" print "#endif" print "const unsigned int cl_lang_count = " n_langs ";\n" print "const struct cl_option cl_options[] =\n{" j = 0 for (i = 0; i < n_opts; i++) { back_chain[i] = "N_OPTS"; indices[opts[i]] = j; # 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]; if (help[i + 1] == "") help[i + 1] = help[i] else if (help[i] != "" && help[i + 1] != help[i]) print "warning: multiple different help strings for " \ opts[i] ":\n\t" help[i] "\n\t" help[i + 1] \ | "cat 1>&2" i++; back_chain[i] = "N_OPTS"; indices[opts[i]] = j; } j++; } for (i = 0; i < n_opts; i++) { # With identical flags, pick only the last one. The # earlier loop ensured that it has all flags merged, # and a nonempty help text if one of the texts was nonempty. while( i + 1 != n_opts && opts[i] == opts[i + 1] ) { i++; } len = length (opts[i]); enum = opt_enum(opts[i]) # 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 = quote help[i] quote; missing_arg_error = opt_args("MissingArgError", flags[i]) if (missing_arg_error == "") missing_arg_error = "0" else missing_arg_error = quote missing_arg_error quote warn_message = opt_args("Warn", flags[i]) if (warn_message == "") warn_message = "0" else warn_message = quote warn_message quote alias_arg = opt_args("Alias", flags[i]) if (alias_arg == "") { if (flag_set_p("Ignore", flags[i])) alias_data = "NULL, NULL, OPT_SPECIAL_ignore" else alias_data = "NULL, NULL, N_OPTS" } else { alias_opt = nth_arg(0, alias_arg) alias_posarg = nth_arg(1, alias_arg) alias_negarg = nth_arg(2, alias_arg) if (var_ref(opts[i], flags[i]) != "-1") print "#error Alias setting variable" if (alias_posarg != "" && alias_negarg == "") { if (!flag_set_p("RejectNegative", flags[i]) \ && opts[i] ~ "^[Wfm]") print "#error Alias with single argument " \ "allowing negative form" } if (alias_posarg != "" \ && flag_set_p("NegativeAlias", flags[i])) { print "#error Alias with multiple arguments " \ "used with NegativeAlias" } alias_opt = opt_enum(alias_opt) if (alias_posarg == "") alias_posarg = "NULL" else alias_posarg = quote alias_posarg quote if (alias_negarg == "") alias_negarg = "NULL" else alias_negarg = quote alias_negarg quote alias_data = alias_posarg ", " alias_negarg ", " alias_opt } neg = opt_args("Negative", flags[i]); if (neg != "") idx = indices[neg] else { if (flag_set_p("RejectNegative", flags[i])) idx = -1; else { if (opts[i] ~ "^[Wfm]") idx = indices[opts[i]]; else idx = -1; } } # Split the printf after %u to work around an ia64-hp-hpux11.23 # awk bug. printf(" { %c-%s%c,\n %s,\n %s,\n %s,\n %s, %s, %u,", quote, opts[i], quote, hlp, missing_arg_error, warn_message, alias_data, back_chain[i], len) printf(" %d,\n", idx) condition = opt_args("Condition", flags[i]) cl_flags = switch_flags(flags[i]) cl_bit_fields = switch_bit_fields(flags[i]) cl_zero_bit_fields = switch_bit_fields("") if (condition != "") printf("#if %s\n" \ " %s,\n" \ " 0, %s,\n" \ "#else\n" \ " 0,\n" \ " 1 /* Disabled. */, %s,\n" \ "#endif\n", condition, cl_flags, cl_bit_fields, cl_zero_bit_fields) else printf(" %s,\n" \ " 0, %s,\n", cl_flags, cl_bit_fields) printf(" %s, %s }%s\n", var_ref(opts[i], flags[i]), var_set(flags[i]), comma) } print "};" }
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