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Diffstat (limited to 'contrib/gcc/optc-gen.awk')
| -rw-r--r-- | contrib/gcc/optc-gen.awk | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/contrib/gcc/optc-gen.awk b/contrib/gcc/optc-gen.awk new file mode 100644 index 0000000000000..aa6bb11a10c51 --- /dev/null +++ b/contrib/gcc/optc-gen.awk @@ -0,0 +1,209 @@ +# Copyright (C) 2003,2004 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 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; if not, write to the Free Software +# Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + +# This Awk script reads in the option records generated from +# opt-gather.awk, combines the flags of duplicat options and generates a +# C file. +# +# This program uses functions from opt-functions.awk +# +# Usage: awk -f opt-functions.awk -f optc-gen.awk \ +# [-v header_name=header.h] < inputfile > options.c + +BEGIN { + n_opts = 0 + n_langs = 0 + quote = "\042" + comma = "," + FS=SUBSEP + # Default the name of header created from opth-gen.awk to options.h + if (header_name == "") header_name="options.h" +} + +# 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++; + } + } + } + +# Dump that array of options into a C file. +END { +print "/* This file is auto-generated by opts.sh. */" +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 "" +print "#ifdef GCC_DRIVER" +print "int target_flags;" +print "#endif /* GCC_DRIVER */" +print "" + +for (i = 0; i < n_opts; i++) { + name = var_name(flags[i]); + if (name == "") + continue; + + if (flag_set_p("VarExists", flags[i])) { + # Need it for the gcc driver. + if (name in var_seen) + continue; + init = "" + gcc_driver = 1 + } + else { + init = opt_args("Init", flags[i]) + if (init != "") + init = " = " init; + else if (name in var_seen) + continue; + gcc_driver = 0 + } + + if (gcc_driver == 1) + print "#ifdef GCC_DRIVER" + print "/* Set by -" opts[i] "." + print " " help[i] " */" + print var_type(flags[i]) name init ";" + if (gcc_driver == 1) + print "#endif /* GCC_DRIVER */" + print "" + + var_seen[name] = 1; +} + +print "" +print "/* Local state variables. */" +for (i = 0; i < n_opts; i++) { + name = static_var(opts[i], flags[i]); + if (name != "") + print "static " var_type(flags[i]) name ";" +} +print "" + +print "const char * const lang_names[] =\n{" +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 " " quote langs[i] quote "," + } + +print " 0\n};\n" +print "const unsigned int cl_options_count = N_OPTS;\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]; + i++; + back_chain[i] = "N_OPTS"; + indices[opts[i]] = j; + } + j++; +} + +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 = quote help[i] quote; + + 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; + } + } + printf(" { %c-%s%c,\n %s,\n %s, %u, %d,\n", + quote, opts[i], quote, hlp, back_chain[i], len, idx) + condition = opt_args("Condition", flags[i]) + cl_flags = switch_flags(flags[i]) + if (condition != "") + printf("#if %s\n" \ + " %s,\n" \ + "#else\n" \ + " CL_DISABLED,\n" \ + "#endif\n", + condition, cl_flags, cl_flags) + else + printf(" %s,\n", cl_flags) + printf(" %s, %s }%s\n", var_ref(opts[i], flags[i]), + var_set(flags[i]), comma) +} + +print "};" +} |