From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/opt-functions.awk | 241 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 241 insertions(+) create mode 100644 gcc/opt-functions.awk (limited to 'gcc/opt-functions.awk') diff --git a/gcc/opt-functions.awk b/gcc/opt-functions.awk new file mode 100644 index 000000000..9aff0e004 --- /dev/null +++ b/gcc/opt-functions.awk @@ -0,0 +1,241 @@ +# Copyright (C) 2003, 2004, 2007, 2008, 2009, 2010 +# 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 +# . + +# 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) +{ + 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 "" +} + +# 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("Driver", flags, " | CL_DRIVER") \ + test_flag("RejectDriver", flags, " | CL_REJECT_DRIVER") \ + test_flag("NoDriverArg", flags, " | CL_NO_DRIVER_ARG") \ + test_flag("SeparateAlias", flags, " | CL_SEPARATE_ALIAS") \ + test_flag("Save", flags, " | CL_SAVE") \ + test_flag("Joined", flags, " | CL_JOINED") \ + test_flag("JoinedOrMissing", flags, " | CL_JOINED | CL_MISSING_OK") \ + test_flag("Separate", flags, " | CL_SEPARATE") \ + test_flag("RejectNegative", flags, " | CL_REJECT_NEGATIVE") \ + test_flag("UInteger", flags, " | CL_UINTEGER") \ + test_flag("Undocumented", flags, " | CL_UNDOCUMENTED") \ + test_flag("Warning", flags, " | CL_WARNING") \ + test_flag("Optimization", flags, " | CL_OPTIMIZATION") \ + test_flag("Report", flags, " | CL_REPORT") + sep_args = opt_args("Args", flags) + if (sep_args != "") { + sep_args-- + result = result " | (" sep_args \ + " << CL_SEPARATE_NARGS_SHIFT)" + } + sub( "^0 \\| ", "", 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 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("Joined.*", flags) && !flag_set_p("Separate", flags)) { + if (flag_set_p(".*Mask.*", flags)) + 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 "-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) +} -- cgit v1.2.3