| # Copyright (C) 2003-2018 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/>. |
| |
| # Some common subroutines for use by opt[ch]-gen.awk. |
| |
| # Define some helpful character classes, for portability. |
| BEGIN { |
| lower = "abcdefghijklmnopqrstuvwxyz" |
| upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" |
| digit = "0123456789" |
| alnum = lower "" upper "" digit |
| } |
| |
| # Return nonzero if FLAGS contains a flag matching REGEX. |
| function flag_set_p(regex, flags) |
| { |
| # Ignore the arguments of flags with arguments. |
| gsub ("\\([^)]+\\)", "", flags); |
| return (" " flags " ") ~ (" " regex " ") |
| } |
| |
| # Return STRING if FLAGS contains a flag matching regexp REGEX, |
| # otherwise return the empty string. |
| function test_flag(regex, flags, string) |
| { |
| if (flag_set_p(regex, flags)) |
| return string |
| return "" |
| } |
| |
| # Return a field initializer, with trailing comma, for a field that is |
| # 1 if FLAGS contains a flag matching REGEX and 0 otherwise. |
| function flag_init(regex, flags) |
| { |
| if (flag_set_p(regex, flags)) |
| return "1 /* " regex " */, " |
| else |
| return "0, " |
| } |
| |
| # If FLAGS contains a "NAME(...argument...)" flag, return the value |
| # of the argument. Return the empty string otherwise. |
| function opt_args(name, flags) |
| { |
| flags = " " flags |
| if (flags !~ " " name "\\(") |
| return "" |
| sub(".* " name "\\(", "", flags) |
| if (flags ~ "^[{]") |
| { |
| sub ("^[{]", "", flags) |
| sub ("}\\).*", "", flags) |
| } |
| else |
| sub("\\).*", "", flags) |
| |
| return flags |
| } |
| |
| # Return the Nth comma-separated element of S. Return the empty string |
| # if S does not contain N elements. |
| function nth_arg(n, s) |
| { |
| while (n-- > 0) { |
| if (s !~ ",") |
| return "" |
| sub("[^,]*, *", "", s) |
| } |
| sub(",.*", "", s) |
| return s |
| } |
| |
| # Return a bitmask of CL_* values for option flags FLAGS. |
| function switch_flags (flags) |
| { |
| result = "0" |
| for (j = 0; j < n_langs; j++) { |
| regex = langs[j] |
| gsub ( "\\+", "\\+", regex ) |
| result = result test_flag(regex, flags, " | " macros[j]) |
| } |
| result = result \ |
| test_flag("Common", flags, " | CL_COMMON") \ |
| test_flag("Target", flags, " | CL_TARGET") \ |
| test_flag("PchIgnore", flags, " | CL_PCH_IGNORE") \ |
| test_flag("Driver", flags, " | CL_DRIVER") \ |
| test_flag("Joined", flags, " | CL_JOINED") \ |
| test_flag("JoinedOrMissing", flags, " | CL_JOINED") \ |
| test_flag("Separate", flags, " | CL_SEPARATE") \ |
| test_flag("Undocumented", flags, " | CL_UNDOCUMENTED") \ |
| test_flag("NoDWARFRecord", flags, " | CL_NO_DWARF_RECORD") \ |
| test_flag("Warning", flags, " | CL_WARNING") \ |
| test_flag("(Optimization|PerFunction)", flags, " | CL_OPTIMIZATION") |
| sub( "^0 \\| ", "", result ) |
| return result |
| } |
| |
| # Return bit-field initializers for option flags FLAGS. |
| function switch_bit_fields (flags) |
| { |
| vn = var_name(flags); |
| if (host_wide_int[vn] == "yes") |
| hwi = "Host_Wide_Int" |
| else |
| hwi = "" |
| result = "" |
| sep_args = opt_args("Args", flags) |
| if (sep_args == "") |
| sep_args = 0 |
| else |
| sep_args-- |
| result = result sep_args ", " |
| |
| result = result \ |
| flag_init("SeparateAlias", flags) \ |
| flag_init("NegativeAlias", flags) \ |
| flag_init("NoDriverArg", flags) \ |
| flag_init("RejectDriver", flags) \ |
| flag_init("RejectNegative", flags) \ |
| flag_init("JoinedOrMissing", flags) \ |
| flag_init("UInteger", flags) \ |
| flag_init("Host_Wide_Int", hwi) \ |
| flag_init("ToLower", flags) \ |
| flag_init("Report", flags) |
| |
| sub(", $", "", result) |
| return result |
| } |
| |
| # If FLAGS includes a Var flag, return the name of the variable it specifies. |
| # Return the empty string otherwise. |
| function var_name(flags) |
| { |
| return nth_arg(0, opt_args("Var", flags)) |
| } |
| |
| # Return the name of the variable if FLAGS has a HOST_WIDE_INT variable. |
| # Return the empty string otherwise. |
| function host_wide_int_var_name(flags) |
| { |
| split (flags, array, "[ \t]+") |
| if (array[1] == "HOST_WIDE_INT") |
| return array[2] |
| else |
| return "" |
| } |
| |
| # Return true if the option described by FLAGS has a globally-visible state. |
| function global_state_p(flags) |
| { |
| return (var_name(flags) != "" \ |
| || opt_args("Mask", flags) != "" \ |
| || opt_args("InverseMask", flags) != "") |
| } |
| |
| # Return true if the option described by FLAGS must have some state |
| # associated with it. |
| function needs_state_p(flags) |
| { |
| return (flag_set_p("Target", flags) \ |
| && !flag_set_p("Alias.*", flags) \ |
| && !flag_set_p("Ignore", flags)) |
| } |
| |
| # If FLAGS describes an option that needs state without a public |
| # variable name, return the name of that field, minus the initial |
| # "x_", otherwise return "". NAME is the name of the option. |
| function static_var(name, flags) |
| { |
| if (global_state_p(flags) || !needs_state_p(flags)) |
| return "" |
| gsub ("[^" alnum "]", "_", name) |
| return "VAR_" name |
| } |
| |
| # Return the type of variable that should be associated with the given flags. |
| function var_type(flags) |
| { |
| if (flag_set_p("Defer", flags)) |
| return "void *" |
| else if (flag_set_p("Enum.*", flags)) { |
| en = opt_args("Enum", flags); |
| return enum_type[en] " " |
| } |
| else if (!flag_set_p("Joined.*", flags) && !flag_set_p("Separate", flags)) |
| return "int " |
| else if (flag_set_p("UInteger", flags)) |
| return "int " |
| else |
| return "const char *" |
| } |
| |
| # Return the type of variable that should be associated with the given flags |
| # for use within a structure. Simple variables are changed to signed char |
| # type instead of int to save space. |
| function var_type_struct(flags) |
| { |
| if (flag_set_p("UInteger", flags)) |
| return "int " |
| else if (flag_set_p("Enum.*", flags)) { |
| en = opt_args("Enum", flags); |
| return enum_type[en] " " |
| } |
| else if (!flag_set_p("Joined.*", flags) && !flag_set_p("Separate", flags)) { |
| if (flag_set_p(".*Mask.*", flags)) { |
| if (host_wide_int[var_name(flags)] == "yes") |
| return "HOST_WIDE_INT " |
| else |
| return "int " |
| } |
| else |
| return "signed char " |
| } |
| else |
| return "const char *" |
| } |
| |
| # Given that an option has flags FLAGS, return an initializer for the |
| # "var_enum", "var_type" and "var_value" fields of its cl_options[] entry. |
| function var_set(flags) |
| { |
| if (flag_set_p("Defer", flags)) |
| return "0, CLVC_DEFER, 0" |
| s = nth_arg(1, opt_args("Var", flags)) |
| if (s != "") |
| return "0, CLVC_EQUAL, " s |
| s = opt_args("Mask", flags); |
| if (s != "") { |
| vn = var_name(flags); |
| if (vn) |
| return "0, CLVC_BIT_SET, OPTION_MASK_" s |
| else |
| return "0, CLVC_BIT_SET, MASK_" s |
| } |
| s = nth_arg(0, opt_args("InverseMask", flags)); |
| if (s != "") { |
| vn = var_name(flags); |
| if (vn) |
| return "0, CLVC_BIT_CLEAR, OPTION_MASK_" s |
| else |
| return "0, CLVC_BIT_CLEAR, MASK_" s |
| } |
| if (flag_set_p("Enum.*", flags)) { |
| en = opt_args("Enum", flags); |
| return enum_index[en] ", CLVC_ENUM, 0" |
| } |
| if (var_type(flags) == "const char *") |
| return "0, CLVC_STRING, 0" |
| return "0, CLVC_BOOLEAN, 0" |
| } |
| |
| # Given that an option called NAME has flags FLAGS, return an initializer |
| # for the "flag_var" field of its cl_options[] entry. |
| function var_ref(name, flags) |
| { |
| name = var_name(flags) static_var(name, flags) |
| if (name != "") |
| return "offsetof (struct gcc_options, x_" name ")" |
| if (opt_args("Mask", flags) != "") |
| return "offsetof (struct gcc_options, x_target_flags)" |
| if (opt_args("InverseMask", flags) != "") |
| return "offsetof (struct gcc_options, x_target_flags)" |
| return "(unsigned short) -1" |
| } |
| |
| # Given the option called NAME return a sanitized version of its name. |
| function opt_sanitized_name(name) |
| { |
| gsub ("[^" alnum "]", "_", name) |
| return name |
| } |
| |
| # Given the option called NAME return the appropriate enum for it. |
| function opt_enum(name) |
| { |
| return "OPT_" opt_sanitized_name(name) |
| } |
| |
| # Given the language called NAME return a sanitized version of its name. |
| function lang_sanitized_name(name) |
| { |
| gsub( "[^" alnum "_]", "X", name ) |
| return name |
| } |
| |
| # Search for a valid var_name among all OPTS equal to option NAME. |
| # If not found, return "". |
| function search_var_name(name, opt_numbers, opts, flags, n_opts) |
| { |
| opt_var_name = var_name(flags[opt_numbers[name]]); |
| if (opt_var_name != "") { |
| return opt_var_name; |
| } |
| for (k = 0; k < n_opts; k++) { |
| if (opts[k] == name && var_name(flags[k]) != "") { |
| return var_name(flags[k]); |
| } |
| } |
| return "" |
| } |
| |
| function integer_range_info(range_option, init, option) |
| { |
| if (range_option != "") { |
| start = nth_arg(0, range_option); |
| end = nth_arg(1, range_option); |
| if (init != "" && init != "-1" && (init < start || init > end)) |
| print "#error initial value " init " of '" option "' must be in range [" start "," end "]" |
| return start ", " end |
| } |
| else |
| return "-1, -1" |
| } |
| |
| # Handle LangEnabledBy(ENABLED_BY_LANGS, ENABLEDBY_NAME, ENABLEDBY_POSARG, |
| # ENABLEDBY_NEGARG). This function does not return anything. |
| function lang_enabled_by(enabledby_langs, enabledby_name, enabledby_posarg, enabledby_negarg) |
| { |
| n_enabledby_arg_langs = split(enabledby_langs, enabledby_arg_langs, " "); |
| if (enabledby_posarg != "" && enabledby_negarg != "") { |
| with_args = "," enabledby_posarg "," enabledby_negarg |
| } else if (enabledby_posarg == "" && enabledby_negarg == "") { |
| with_args = "" |
| } else { |
| print "#error " opts[i] " LangEnabledBy("enabledby_langs","enabledby_name", " \ |
| enabledby_posarg", " enabledby_negargs \ |
| ") with three arguments, it should have either 2 or 4" |
| } |
| |
| n_enabledby_array = split(enabledby_name, enabledby_array, " \\|\\| "); |
| for (k = 1; k <= n_enabledby_array; k++) { |
| enabledby_index = opt_numbers[enabledby_array[k]]; |
| if (enabledby_index == "") { |
| print "#error " opts[i] " LangEnabledBy("enabledby_langs","enabledby_name", " \ |
| enabledby_posarg", " enabledby_negargs"), unknown option '" enabledby_name "'" |
| } else { |
| for (j = 1; j <= n_enabledby_arg_langs; j++) { |
| lang_name = lang_sanitized_name(enabledby_arg_langs[j]); |
| lang_index = lang_numbers[enabledby_arg_langs[j]]; |
| if (enables[lang_name,enabledby_array[k]] == "") { |
| enabledby[lang_name,n_enabledby_lang[lang_index]] = enabledby_array[k]; |
| n_enabledby_lang[lang_index]++; |
| } |
| enables[lang_name,enabledby_array[k]] \ |
| = enables[lang_name,enabledby_array[k]] opts[i] with_args ";"; |
| } |
| } |
| } |
| } |