Mercurial > hg > CbC > GCC_original
annotate gcc/opt-functions.awk @ 16:04ced10e8804
gcc 7
| author | kono |
|---|---|
| date | Fri, 27 Oct 2017 22:46:09 +0900 |
| parents | f6334be47118 |
| children | 84e7813d76e9 |
| rev | line source |
|---|---|
| 16 | 1 # Copyright (C) 2003-2017 Free Software Foundation, Inc. |
| 0 | 2 # Contributed by Kelley Cook, June 2004. |
| 3 # Original code from Neil Booth, May 2003. | |
| 4 # | |
| 5 # This program is free software; you can redistribute it and/or modify it | |
| 6 # under the terms of the GNU General Public License as published by the | |
| 7 # Free Software Foundation; either version 3, or (at your option) any | |
| 8 # later version. | |
| 9 # | |
| 10 # This program is distributed in the hope that it will be useful, | |
| 11 # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 # GNU General Public License for more details. | |
| 14 # | |
| 15 # You should have received a copy of the GNU General Public License | |
| 16 # along with this program; see the file COPYING3. If not see | |
| 17 # <http://www.gnu.org/licenses/>. | |
| 18 | |
| 19 # Some common subroutines for use by opt[ch]-gen.awk. | |
| 20 | |
|
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21 # Define some helpful character classes, for portability. |
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22 BEGIN { |
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23 lower = "abcdefghijklmnopqrstuvwxyz" |
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24 upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" |
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25 digit = "0123456789" |
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26 alnum = lower "" upper "" digit |
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27 } |
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28 |
| 0 | 29 # Return nonzero if FLAGS contains a flag matching REGEX. |
| 30 function flag_set_p(regex, flags) | |
| 31 { | |
| 16 | 32 # Ignore the arguments of flags with arguments. |
| 33 gsub ("\\([^)]+\\)", "", flags); | |
| 34 return (" " flags " ") ~ (" " regex " ") | |
| 0 | 35 } |
| 36 | |
| 37 # Return STRING if FLAGS contains a flag matching regexp REGEX, | |
| 38 # otherwise return the empty string. | |
| 39 function test_flag(regex, flags, string) | |
| 40 { | |
| 41 if (flag_set_p(regex, flags)) | |
| 42 return string | |
| 43 return "" | |
| 44 } | |
| 45 | |
| 16 | 46 # Return a field initializer, with trailing comma, for a field that is |
| 47 # 1 if FLAGS contains a flag matching REGEX and 0 otherwise. | |
| 48 function flag_init(regex, flags) | |
| 49 { | |
| 50 if (flag_set_p(regex, flags)) | |
| 51 return "1 /* " regex " */, " | |
| 52 else | |
| 53 return "0, " | |
| 54 } | |
| 55 | |
| 0 | 56 # If FLAGS contains a "NAME(...argument...)" flag, return the value |
| 57 # of the argument. Return the empty string otherwise. | |
| 58 function opt_args(name, flags) | |
| 59 { | |
| 60 flags = " " flags | |
| 61 if (flags !~ " " name "\\(") | |
| 62 return "" | |
| 63 sub(".* " name "\\(", "", flags) | |
| 16 | 64 if (flags ~ "^[{]") |
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65 { |
| 16 | 66 sub ("^[{]", "", flags) |
| 67 sub ("}\\).*", "", flags) | |
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68 } |
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69 else |
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70 sub("\\).*", "", flags) |
| 0 | 71 |
| 72 return flags | |
| 73 } | |
| 74 | |
| 75 # Return the Nth comma-separated element of S. Return the empty string | |
| 76 # if S does not contain N elements. | |
| 77 function nth_arg(n, s) | |
| 78 { | |
| 79 while (n-- > 0) { | |
| 80 if (s !~ ",") | |
| 81 return "" | |
| 82 sub("[^,]*, *", "", s) | |
| 83 } | |
| 84 sub(",.*", "", s) | |
| 85 return s | |
| 86 } | |
| 87 | |
| 88 # Return a bitmask of CL_* values for option flags FLAGS. | |
| 89 function switch_flags (flags) | |
| 90 { | |
| 91 result = "0" | |
| 92 for (j = 0; j < n_langs; j++) { | |
| 93 regex = langs[j] | |
| 94 gsub ( "\\+", "\\+", regex ) | |
| 95 result = result test_flag(regex, flags, " | " macros[j]) | |
| 96 } | |
| 97 result = result \ | |
| 98 test_flag("Common", flags, " | CL_COMMON") \ | |
| 99 test_flag("Target", flags, " | CL_TARGET") \ | |
| 16 | 100 test_flag("PchIgnore", flags, " | CL_PCH_IGNORE") \ |
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101 test_flag("Driver", flags, " | CL_DRIVER") \ |
| 0 | 102 test_flag("Joined", flags, " | CL_JOINED") \ |
| 16 | 103 test_flag("JoinedOrMissing", flags, " | CL_JOINED") \ |
| 0 | 104 test_flag("Separate", flags, " | CL_SEPARATE") \ |
| 105 test_flag("Undocumented", flags, " | CL_UNDOCUMENTED") \ | |
| 16 | 106 test_flag("NoDWARFRecord", flags, " | CL_NO_DWARF_RECORD") \ |
| 0 | 107 test_flag("Warning", flags, " | CL_WARNING") \ |
| 16 | 108 test_flag("(Optimization|PerFunction)", flags, " | CL_OPTIMIZATION") |
| 109 sub( "^0 \\| ", "", result ) | |
| 110 return result | |
| 111 } | |
| 112 | |
| 113 # Return bit-field initializers for option flags FLAGS. | |
| 114 function switch_bit_fields (flags) | |
| 115 { | |
| 116 vn = var_name(flags); | |
| 117 if (host_wide_int[vn] == "yes") | |
| 118 hwi = "Host_Wide_Int" | |
| 119 else | |
| 120 hwi = "" | |
| 121 result = "" | |
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122 sep_args = opt_args("Args", flags) |
| 16 | 123 if (sep_args == "") |
| 124 sep_args = 0 | |
| 125 else | |
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126 sep_args-- |
| 16 | 127 result = result sep_args ", " |
| 128 | |
| 129 result = result \ | |
| 130 flag_init("SeparateAlias", flags) \ | |
| 131 flag_init("NegativeAlias", flags) \ | |
| 132 flag_init("NoDriverArg", flags) \ | |
| 133 flag_init("RejectDriver", flags) \ | |
| 134 flag_init("RejectNegative", flags) \ | |
| 135 flag_init("JoinedOrMissing", flags) \ | |
| 136 flag_init("UInteger", flags) \ | |
| 137 flag_init("Host_Wide_Int", hwi) \ | |
| 138 flag_init("ToLower", flags) \ | |
| 139 flag_init("Report", flags) | |
| 140 | |
| 141 sub(", $", "", result) | |
| 0 | 142 return result |
| 143 } | |
| 144 | |
| 145 # If FLAGS includes a Var flag, return the name of the variable it specifies. | |
| 146 # Return the empty string otherwise. | |
| 147 function var_name(flags) | |
| 148 { | |
| 149 return nth_arg(0, opt_args("Var", flags)) | |
| 150 } | |
| 151 | |
| 16 | 152 # Return the name of the variable if FLAGS has a HOST_WIDE_INT variable. |
| 153 # Return the empty string otherwise. | |
| 154 function host_wide_int_var_name(flags) | |
| 155 { | |
| 156 split (flags, array, "[ \t]+") | |
| 157 if (array[1] == "HOST_WIDE_INT") | |
| 158 return array[2] | |
| 159 else | |
| 160 return "" | |
| 161 } | |
| 162 | |
| 0 | 163 # Return true if the option described by FLAGS has a globally-visible state. |
| 164 function global_state_p(flags) | |
| 165 { | |
| 166 return (var_name(flags) != "" \ | |
| 167 || opt_args("Mask", flags) != "" \ | |
| 168 || opt_args("InverseMask", flags) != "") | |
| 169 } | |
| 170 | |
| 171 # Return true if the option described by FLAGS must have some state | |
| 172 # associated with it. | |
| 173 function needs_state_p(flags) | |
| 174 { | |
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175 return (flag_set_p("Target", flags) \ |
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176 && !flag_set_p("Alias.*", flags) \ |
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177 && !flag_set_p("Ignore", flags)) |
| 0 | 178 } |
| 179 | |
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180 # If FLAGS describes an option that needs state without a public |
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181 # variable name, return the name of that field, minus the initial |
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182 # "x_", otherwise return "". NAME is the name of the option. |
| 0 | 183 function static_var(name, flags) |
| 184 { | |
| 185 if (global_state_p(flags) || !needs_state_p(flags)) | |
| 186 return "" | |
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187 gsub ("[^" alnum "]", "_", name) |
| 0 | 188 return "VAR_" name |
| 189 } | |
| 190 | |
| 191 # Return the type of variable that should be associated with the given flags. | |
| 192 function var_type(flags) | |
| 193 { | |
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194 if (flag_set_p("Defer", flags)) |
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195 return "void *" |
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196 else if (flag_set_p("Enum.*", flags)) { |
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197 en = opt_args("Enum", flags); |
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198 return enum_type[en] " " |
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199 } |
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200 else if (!flag_set_p("Joined.*", flags) && !flag_set_p("Separate", flags)) |
| 0 | 201 return "int " |
| 202 else if (flag_set_p("UInteger", flags)) | |
| 203 return "int " | |
| 204 else | |
| 205 return "const char *" | |
| 206 } | |
| 207 | |
| 208 # Return the type of variable that should be associated with the given flags | |
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209 # for use within a structure. Simple variables are changed to signed char |
| 0 | 210 # type instead of int to save space. |
| 211 function var_type_struct(flags) | |
| 212 { | |
| 213 if (flag_set_p("UInteger", flags)) | |
| 214 return "int " | |
| 16 | 215 else if (flag_set_p("Enum.*", flags)) { |
| 216 en = opt_args("Enum", flags); | |
| 217 return enum_type[en] " " | |
| 218 } | |
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219 else if (!flag_set_p("Joined.*", flags) && !flag_set_p("Separate", flags)) { |
| 16 | 220 if (flag_set_p(".*Mask.*", flags)) { |
| 221 if (host_wide_int[var_name(flags)] == "yes") | |
| 222 return "HOST_WIDE_INT " | |
| 223 else | |
| 224 return "int " | |
| 225 } | |
| 0 | 226 else |
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227 return "signed char " |
| 0 | 228 } |
| 229 else | |
| 230 return "const char *" | |
| 231 } | |
| 232 | |
| 233 # Given that an option has flags FLAGS, return an initializer for the | |
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234 # "var_enum", "var_type" and "var_value" fields of its cl_options[] entry. |
| 0 | 235 function var_set(flags) |
| 236 { | |
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237 if (flag_set_p("Defer", flags)) |
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238 return "0, CLVC_DEFER, 0" |
| 0 | 239 s = nth_arg(1, opt_args("Var", flags)) |
| 240 if (s != "") | |
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241 return "0, CLVC_EQUAL, " s |
| 0 | 242 s = opt_args("Mask", flags); |
| 243 if (s != "") { | |
| 244 vn = var_name(flags); | |
| 245 if (vn) | |
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246 return "0, CLVC_BIT_SET, OPTION_MASK_" s |
| 0 | 247 else |
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248 return "0, CLVC_BIT_SET, MASK_" s |
| 0 | 249 } |
| 250 s = nth_arg(0, opt_args("InverseMask", flags)); | |
| 251 if (s != "") { | |
| 252 vn = var_name(flags); | |
| 253 if (vn) | |
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254 return "0, CLVC_BIT_CLEAR, OPTION_MASK_" s |
| 0 | 255 else |
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256 return "0, CLVC_BIT_CLEAR, MASK_" s |
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257 } |
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258 if (flag_set_p("Enum.*", flags)) { |
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259 en = opt_args("Enum", flags); |
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260 return enum_index[en] ", CLVC_ENUM, 0" |
| 0 | 261 } |
| 262 if (var_type(flags) == "const char *") | |
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263 return "0, CLVC_STRING, 0" |
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264 return "0, CLVC_BOOLEAN, 0" |
| 0 | 265 } |
| 266 | |
| 267 # Given that an option called NAME has flags FLAGS, return an initializer | |
| 268 # for the "flag_var" field of its cl_options[] entry. | |
| 269 function var_ref(name, flags) | |
| 270 { | |
| 271 name = var_name(flags) static_var(name, flags) | |
| 272 if (name != "") | |
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273 return "offsetof (struct gcc_options, x_" name ")" |
| 0 | 274 if (opt_args("Mask", flags) != "") |
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275 return "offsetof (struct gcc_options, x_target_flags)" |
| 0 | 276 if (opt_args("InverseMask", flags) != "") |
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277 return "offsetof (struct gcc_options, x_target_flags)" |
| 16 | 278 return "(unsigned short) -1" |
| 0 | 279 } |
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280 |
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281 # Given the option called NAME return a sanitized version of its name. |
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282 function opt_sanitized_name(name) |
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283 { |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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284 gsub ("[^" alnum "]", "_", name) |
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update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
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285 return name |
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update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
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286 } |
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287 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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288 # Given the option called NAME return the appropriate enum for it. |
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update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
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289 function opt_enum(name) |
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290 { |
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291 return "OPT_" opt_sanitized_name(name) |
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292 } |
| 16 | 293 |
| 294 # Given the language called NAME return a sanitized version of its name. | |
| 295 function lang_sanitized_name(name) | |
| 296 { | |
| 297 gsub( "[^" alnum "_]", "X", name ) | |
| 298 return name | |
| 299 } | |
| 300 | |
| 301 # Search for a valid var_name among all OPTS equal to option NAME. | |
| 302 # If not found, return "". | |
| 303 function search_var_name(name, opt_numbers, opts, flags, n_opts) | |
| 304 { | |
| 305 opt_var_name = var_name(flags[opt_numbers[name]]); | |
| 306 if (opt_var_name != "") { | |
| 307 return opt_var_name; | |
| 308 } | |
| 309 for (k = 0; k < n_opts; k++) { | |
| 310 if (opts[k] == name && var_name(flags[k]) != "") { | |
| 311 return var_name(flags[k]); | |
| 312 } | |
| 313 } | |
| 314 return "" | |
| 315 } | |
| 316 | |
| 317 function integer_range_info(range_option, init, option) | |
| 318 { | |
| 319 if (range_option != "") { | |
| 320 start = nth_arg(0, range_option); | |
| 321 end = nth_arg(1, range_option); | |
| 322 if (init != "" && init != "-1" && (init < start || init > end)) | |
| 323 print "#error initial value " init " of '" option "' must be in range [" start "," end "]" | |
| 324 return start ", " end | |
| 325 } | |
| 326 else | |
| 327 return "-1, -1" | |
| 328 } | |
| 329 | |
| 330 # Handle LangEnabledBy(ENABLED_BY_LANGS, ENABLEDBY_NAME, ENABLEDBY_POSARG, | |
| 331 # ENABLEDBY_NEGARG). This function does not return anything. | |
| 332 function lang_enabled_by(enabledby_langs, enabledby_name, enabledby_posarg, enabledby_negarg) | |
| 333 { | |
| 334 n_enabledby_arg_langs = split(enabledby_langs, enabledby_arg_langs, " "); | |
| 335 if (enabledby_posarg != "" && enabledby_negarg != "") { | |
| 336 with_args = "," enabledby_posarg "," enabledby_negarg | |
| 337 } else if (enabledby_posarg == "" && enabledby_negarg == "") { | |
| 338 with_args = "" | |
| 339 } else { | |
| 340 print "#error " opts[i] " LangEnabledBy("enabledby_langs","enabledby_name", " \ | |
| 341 enabledby_posarg", " enabledby_negargs \ | |
| 342 ") with three arguments, it should have either 2 or 4" | |
| 343 } | |
| 344 | |
| 345 n_enabledby_array = split(enabledby_name, enabledby_array, " \\|\\| "); | |
| 346 for (k = 1; k <= n_enabledby_array; k++) { | |
| 347 enabledby_index = opt_numbers[enabledby_array[k]]; | |
| 348 if (enabledby_index == "") { | |
| 349 print "#error " opts[i] " LangEnabledBy("enabledby_langs","enabledby_name", " \ | |
| 350 enabledby_posarg", " enabledby_negargs"), unknown option '" enabledby_name "'" | |
| 351 } else { | |
| 352 for (j = 1; j <= n_enabledby_arg_langs; j++) { | |
| 353 lang_name = lang_sanitized_name(enabledby_arg_langs[j]); | |
| 354 lang_index = lang_numbers[enabledby_arg_langs[j]]; | |
| 355 if (enables[lang_name,enabledby_array[k]] == "") { | |
| 356 enabledby[lang_name,n_enabledby_lang[lang_index]] = enabledby_array[k]; | |
| 357 n_enabledby_lang[lang_index]++; | |
| 358 } | |
| 359 enables[lang_name,enabledby_array[k]] \ | |
| 360 = enables[lang_name,enabledby_array[k]] opts[i] with_args ";"; | |
| 361 } | |
| 362 } | |
| 363 } | |
| 364 } |