Mercurial > hg > CbC > CbC_gcc
annotate gcc/opt-functions.awk @ 75:3c5ea37d9068
update gcc to gcc-4.6
| author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 22 Aug 2011 04:01:01 +0900 |
| parents | f6334be47118 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
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1 # Copyright (C) 2003, 2004, 2007, 2008, 2009, 2010 |
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2 # Free Software Foundation, Inc. |
| 0 | 3 # Contributed by Kelley Cook, June 2004. |
| 4 # Original code from Neil Booth, May 2003. | |
| 5 # | |
| 6 # This program is free software; you can redistribute it and/or modify it | |
| 7 # under the terms of the GNU General Public License as published by the | |
| 8 # Free Software Foundation; either version 3, or (at your option) any | |
| 9 # later version. | |
| 10 # | |
| 11 # This program is distributed in the hope that it will be useful, | |
| 12 # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 # GNU General Public License for more details. | |
| 15 # | |
| 16 # You should have received a copy of the GNU General Public License | |
| 17 # along with this program; see the file COPYING3. If not see | |
| 18 # <http://www.gnu.org/licenses/>. | |
| 19 | |
| 20 # Some common subroutines for use by opt[ch]-gen.awk. | |
| 21 | |
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22 # Define some helpful character classes, for portability. |
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23 BEGIN { |
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24 lower = "abcdefghijklmnopqrstuvwxyz" |
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25 upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" |
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26 digit = "0123456789" |
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27 alnum = lower "" upper "" digit |
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28 } |
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29 |
| 0 | 30 # Return nonzero if FLAGS contains a flag matching REGEX. |
| 31 function flag_set_p(regex, flags) | |
| 32 { | |
| 33 return (" " flags " ") ~ (" " regex " ") | |
| 34 } | |
| 35 | |
| 36 # Return STRING if FLAGS contains a flag matching regexp REGEX, | |
| 37 # otherwise return the empty string. | |
| 38 function test_flag(regex, flags, string) | |
| 39 { | |
| 40 if (flag_set_p(regex, flags)) | |
| 41 return string | |
| 42 return "" | |
| 43 } | |
| 44 | |
| 45 # If FLAGS contains a "NAME(...argument...)" flag, return the value | |
| 46 # of the argument. Return the empty string otherwise. | |
| 47 function opt_args(name, flags) | |
| 48 { | |
| 49 flags = " " flags | |
| 50 if (flags !~ " " name "\\(") | |
| 51 return "" | |
| 52 sub(".* " name "\\(", "", flags) | |
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53 if (flags ~ "^{") |
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54 { |
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55 sub ("^{", "", flags) |
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56 sub("}\\).*", "", flags) |
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57 } |
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58 else |
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59 sub("\\).*", "", flags) |
| 0 | 60 |
| 61 return flags | |
| 62 } | |
| 63 | |
| 64 # Return the Nth comma-separated element of S. Return the empty string | |
| 65 # if S does not contain N elements. | |
| 66 function nth_arg(n, s) | |
| 67 { | |
| 68 while (n-- > 0) { | |
| 69 if (s !~ ",") | |
| 70 return "" | |
| 71 sub("[^,]*, *", "", s) | |
| 72 } | |
| 73 sub(",.*", "", s) | |
| 74 return s | |
| 75 } | |
| 76 | |
| 77 # Return a bitmask of CL_* values for option flags FLAGS. | |
| 78 function switch_flags (flags) | |
| 79 { | |
| 80 result = "0" | |
| 81 for (j = 0; j < n_langs; j++) { | |
| 82 regex = langs[j] | |
| 83 gsub ( "\\+", "\\+", regex ) | |
| 84 result = result test_flag(regex, flags, " | " macros[j]) | |
| 85 } | |
| 86 result = result \ | |
| 87 test_flag("Common", flags, " | CL_COMMON") \ | |
| 88 test_flag("Target", flags, " | CL_TARGET") \ | |
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89 test_flag("Driver", flags, " | CL_DRIVER") \ |
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90 test_flag("RejectDriver", flags, " | CL_REJECT_DRIVER") \ |
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91 test_flag("NoDriverArg", flags, " | CL_NO_DRIVER_ARG") \ |
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92 test_flag("SeparateAlias", flags, " | CL_SEPARATE_ALIAS") \ |
| 0 | 93 test_flag("Save", flags, " | CL_SAVE") \ |
| 94 test_flag("Joined", flags, " | CL_JOINED") \ | |
| 95 test_flag("JoinedOrMissing", flags, " | CL_JOINED | CL_MISSING_OK") \ | |
| 96 test_flag("Separate", flags, " | CL_SEPARATE") \ | |
| 97 test_flag("RejectNegative", flags, " | CL_REJECT_NEGATIVE") \ | |
| 98 test_flag("UInteger", flags, " | CL_UINTEGER") \ | |
| 99 test_flag("Undocumented", flags, " | CL_UNDOCUMENTED") \ | |
| 100 test_flag("Warning", flags, " | CL_WARNING") \ | |
| 101 test_flag("Optimization", flags, " | CL_OPTIMIZATION") \ | |
| 102 test_flag("Report", flags, " | CL_REPORT") | |
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103 sep_args = opt_args("Args", flags) |
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104 if (sep_args != "") { |
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105 sep_args-- |
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106 result = result " | (" sep_args \ |
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107 " << CL_SEPARATE_NARGS_SHIFT)" |
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108 } |
| 0 | 109 sub( "^0 \\| ", "", result ) |
| 110 return result | |
| 111 } | |
| 112 | |
| 113 # If FLAGS includes a Var flag, return the name of the variable it specifies. | |
| 114 # Return the empty string otherwise. | |
| 115 function var_name(flags) | |
| 116 { | |
| 117 return nth_arg(0, opt_args("Var", flags)) | |
| 118 } | |
| 119 | |
| 120 # Return true if the option described by FLAGS has a globally-visible state. | |
| 121 function global_state_p(flags) | |
| 122 { | |
| 123 return (var_name(flags) != "" \ | |
| 124 || opt_args("Mask", flags) != "" \ | |
| 125 || opt_args("InverseMask", flags) != "") | |
| 126 } | |
| 127 | |
| 128 # Return true if the option described by FLAGS must have some state | |
| 129 # associated with it. | |
| 130 function needs_state_p(flags) | |
| 131 { | |
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132 return (flag_set_p("Target", flags) \ |
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133 && !flag_set_p("Alias.*", flags) \ |
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134 && !flag_set_p("Ignore", flags)) |
| 0 | 135 } |
| 136 | |
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137 # If FLAGS describes an option that needs state without a public |
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138 # variable name, return the name of that field, minus the initial |
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139 # "x_", otherwise return "". NAME is the name of the option. |
| 0 | 140 function static_var(name, flags) |
| 141 { | |
| 142 if (global_state_p(flags) || !needs_state_p(flags)) | |
| 143 return "" | |
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144 gsub ("[^" alnum "]", "_", name) |
| 0 | 145 return "VAR_" name |
| 146 } | |
| 147 | |
| 148 # Return the type of variable that should be associated with the given flags. | |
| 149 function var_type(flags) | |
| 150 { | |
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151 if (flag_set_p("Defer", flags)) |
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152 return "void *" |
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153 else if (flag_set_p("Enum.*", flags)) { |
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154 en = opt_args("Enum", flags); |
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155 return enum_type[en] " " |
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156 } |
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157 else if (!flag_set_p("Joined.*", flags) && !flag_set_p("Separate", flags)) |
| 0 | 158 return "int " |
| 159 else if (flag_set_p("UInteger", flags)) | |
| 160 return "int " | |
| 161 else | |
| 162 return "const char *" | |
| 163 } | |
| 164 | |
| 165 # Return the type of variable that should be associated with the given flags | |
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166 # for use within a structure. Simple variables are changed to signed char |
| 0 | 167 # type instead of int to save space. |
| 168 function var_type_struct(flags) | |
| 169 { | |
| 170 if (flag_set_p("UInteger", flags)) | |
| 171 return "int " | |
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172 else if (!flag_set_p("Joined.*", flags) && !flag_set_p("Separate", flags)) { |
| 0 | 173 if (flag_set_p(".*Mask.*", flags)) |
| 174 return "int " | |
| 175 else | |
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176 return "signed char " |
| 0 | 177 } |
| 178 else | |
| 179 return "const char *" | |
| 180 } | |
| 181 | |
| 182 # Given that an option has flags FLAGS, return an initializer for the | |
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183 # "var_enum", "var_type" and "var_value" fields of its cl_options[] entry. |
| 0 | 184 function var_set(flags) |
| 185 { | |
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186 if (flag_set_p("Defer", flags)) |
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187 return "0, CLVC_DEFER, 0" |
| 0 | 188 s = nth_arg(1, opt_args("Var", flags)) |
| 189 if (s != "") | |
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190 return "0, CLVC_EQUAL, " s |
| 0 | 191 s = opt_args("Mask", flags); |
| 192 if (s != "") { | |
| 193 vn = var_name(flags); | |
| 194 if (vn) | |
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195 return "0, CLVC_BIT_SET, OPTION_MASK_" s |
| 0 | 196 else |
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197 return "0, CLVC_BIT_SET, MASK_" s |
| 0 | 198 } |
| 199 s = nth_arg(0, opt_args("InverseMask", flags)); | |
| 200 if (s != "") { | |
| 201 vn = var_name(flags); | |
| 202 if (vn) | |
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203 return "0, CLVC_BIT_CLEAR, OPTION_MASK_" s |
| 0 | 204 else |
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205 return "0, CLVC_BIT_CLEAR, MASK_" s |
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206 } |
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207 if (flag_set_p("Enum.*", flags)) { |
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208 en = opt_args("Enum", flags); |
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209 return enum_index[en] ", CLVC_ENUM, 0" |
| 0 | 210 } |
| 211 if (var_type(flags) == "const char *") | |
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212 return "0, CLVC_STRING, 0" |
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213 return "0, CLVC_BOOLEAN, 0" |
| 0 | 214 } |
| 215 | |
| 216 # Given that an option called NAME has flags FLAGS, return an initializer | |
| 217 # for the "flag_var" field of its cl_options[] entry. | |
| 218 function var_ref(name, flags) | |
| 219 { | |
| 220 name = var_name(flags) static_var(name, flags) | |
| 221 if (name != "") | |
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222 return "offsetof (struct gcc_options, x_" name ")" |
| 0 | 223 if (opt_args("Mask", flags) != "") |
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224 return "offsetof (struct gcc_options, x_target_flags)" |
| 0 | 225 if (opt_args("InverseMask", flags) != "") |
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226 return "offsetof (struct gcc_options, x_target_flags)" |
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227 return "-1" |
| 0 | 228 } |
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229 |
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230 # Given the option called NAME return a sanitized version of its name. |
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231 function opt_sanitized_name(name) |
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232 { |
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233 gsub ("[^" alnum "]", "_", name) |
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234 return name |
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235 } |
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236 |
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237 # Given the option called NAME return the appropriate enum for it. |
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238 function opt_enum(name) |
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239 { |
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240 return "OPT_" opt_sanitized_name(name) |
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241 } |