Mercurial > hg > CbC > CbC_gcc
annotate gcc/opt-functions.awk @ 158:494b0b89df80 default tip
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| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 25 May 2020 18:13:55 +0900 |
| parents | 1830386684a0 |
| children |
| rev | line source |
|---|---|
| 145 | 1 # Copyright (C) 2003-2020 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 { | |
| 111 | 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 | |
| 111 | 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) | |
| 111 | 64 if (flags ~ "^[{]") |
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65 { |
| 111 | 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") \ | |
| 111 | 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") \ |
| 111 | 103 test_flag("JoinedOrMissing", flags, " | CL_JOINED") \ |
| 0 | 104 test_flag("Separate", flags, " | CL_SEPARATE") \ |
| 105 test_flag("Undocumented", flags, " | CL_UNDOCUMENTED") \ | |
| 111 | 106 test_flag("NoDWARFRecord", flags, " | CL_NO_DWARF_RECORD") \ |
| 0 | 107 test_flag("Warning", flags, " | CL_WARNING") \ |
| 145 | 108 test_flag("(Optimization|PerFunction)", flags, " | CL_OPTIMIZATION") \ |
| 109 test_flag("Param", flags, " | CL_PARAMS") | |
| 111 | 110 sub( "^0 \\| ", "", result ) |
| 111 return result | |
| 112 } | |
| 113 | |
| 114 # Return bit-field initializers for option flags FLAGS. | |
| 115 function switch_bit_fields (flags) | |
| 116 { | |
| 131 | 117 uinteger_flag = "" |
| 111 | 118 vn = var_name(flags); |
| 119 if (host_wide_int[vn] == "yes") | |
| 120 hwi = "Host_Wide_Int" | |
| 131 | 121 else if (flag_set_p("Host_Wide_Int", flags)) { |
| 122 hwi = "Host_Wide_Int" | |
| 123 uinteger_flag = flag_init("UInteger", flags) | |
| 124 } | |
| 111 | 125 else |
| 126 hwi = "" | |
| 127 result = "" | |
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128 sep_args = opt_args("Args", flags) |
| 111 | 129 if (sep_args == "") |
| 130 sep_args = 0 | |
| 131 else | |
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132 sep_args-- |
| 111 | 133 result = result sep_args ", " |
| 134 | |
| 131 | 135 if (uinteger_flag == "") |
| 136 uinteger_flag = flag_init("UInteger", flags) | |
| 137 | |
| 138 hwi_flag = flag_init("Host_Wide_Int", hwi) | |
| 139 byte_size_flag = flag_init("ByteSize", flags) | |
| 140 | |
| 141 if (substr(byte_size_flag, 1, 1) != "0" \ | |
| 142 && substr(uinteger_flag, 1, 1) == "0" \ | |
| 143 && substr(hwi_flag, 1, 1) == "0") | |
| 144 print "#error only UInteger amd Host_Wide_Int options can specify a ByteSize suffix" | |
| 145 | |
| 146 # The following flags need to be in the same order as | |
| 147 # the corresponding members of struct cl_option defined | |
| 148 # in gcc/opts.h. | |
| 111 | 149 result = result \ |
| 150 flag_init("SeparateAlias", flags) \ | |
| 151 flag_init("NegativeAlias", flags) \ | |
| 152 flag_init("NoDriverArg", flags) \ | |
| 153 flag_init("RejectDriver", flags) \ | |
| 154 flag_init("RejectNegative", flags) \ | |
| 155 flag_init("JoinedOrMissing", flags) \ | |
| 131 | 156 uinteger_flag \ |
| 157 hwi_flag \ | |
| 111 | 158 flag_init("ToLower", flags) \ |
| 131 | 159 flag_init("Report", flags) \ |
| 160 byte_size_flag | |
| 111 | 161 |
| 162 sub(", $", "", result) | |
| 0 | 163 return result |
| 164 } | |
| 165 | |
| 166 # If FLAGS includes a Var flag, return the name of the variable it specifies. | |
| 167 # Return the empty string otherwise. | |
| 168 function var_name(flags) | |
| 169 { | |
| 170 return nth_arg(0, opt_args("Var", flags)) | |
| 171 } | |
| 172 | |
| 111 | 173 # Return the name of the variable if FLAGS has a HOST_WIDE_INT variable. |
| 174 # Return the empty string otherwise. | |
| 175 function host_wide_int_var_name(flags) | |
| 176 { | |
| 177 split (flags, array, "[ \t]+") | |
| 178 if (array[1] == "HOST_WIDE_INT") | |
| 179 return array[2] | |
| 180 else | |
| 181 return "" | |
| 182 } | |
| 183 | |
| 0 | 184 # Return true if the option described by FLAGS has a globally-visible state. |
| 185 function global_state_p(flags) | |
| 186 { | |
| 187 return (var_name(flags) != "" \ | |
| 188 || opt_args("Mask", flags) != "" \ | |
| 189 || opt_args("InverseMask", flags) != "") | |
| 190 } | |
| 191 | |
| 192 # Return true if the option described by FLAGS must have some state | |
| 193 # associated with it. | |
| 194 function needs_state_p(flags) | |
| 195 { | |
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196 return (flag_set_p("Target", flags) \ |
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197 && !flag_set_p("Alias.*", flags) \ |
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198 && !flag_set_p("Ignore", flags)) |
| 0 | 199 } |
| 200 | |
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201 # If FLAGS describes an option that needs state without a public |
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202 # variable name, return the name of that field, minus the initial |
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203 # "x_", otherwise return "". NAME is the name of the option. |
| 0 | 204 function static_var(name, flags) |
| 205 { | |
| 206 if (global_state_p(flags) || !needs_state_p(flags)) | |
| 207 return "" | |
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208 gsub ("[^" alnum "]", "_", name) |
| 0 | 209 return "VAR_" name |
| 210 } | |
| 211 | |
| 212 # Return the type of variable that should be associated with the given flags. | |
| 213 function var_type(flags) | |
| 214 { | |
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215 if (flag_set_p("Defer", flags)) |
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216 return "void *" |
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217 else if (flag_set_p("Enum.*", flags)) { |
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218 en = opt_args("Enum", flags); |
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219 return enum_type[en] " " |
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220 } |
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221 else if (!flag_set_p("Joined.*", flags) && !flag_set_p("Separate", flags)) |
| 0 | 222 return "int " |
| 131 | 223 else if (flag_set_p("Host_Wide_Int", flags)) |
| 224 return "HOST_WIDE_INT " | |
| 0 | 225 else if (flag_set_p("UInteger", flags)) |
| 226 return "int " | |
| 227 else | |
| 228 return "const char *" | |
| 229 } | |
| 230 | |
| 231 # Return the type of variable that should be associated with the given flags | |
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232 # for use within a structure. Simple variables are changed to signed char |
| 0 | 233 # type instead of int to save space. |
| 234 function var_type_struct(flags) | |
| 235 { | |
| 131 | 236 if (flag_set_p("UInteger", flags)) { |
| 237 if (host_wide_int[var_name(flags)] == "yes") | |
| 238 return "HOST_WIDE_INT "; | |
| 239 if (flag_set_p("ByteSize", flags)) | |
| 240 return "HOST_WIDE_INT " | |
| 241 return "int " | |
| 242 } | |
| 111 | 243 else if (flag_set_p("Enum.*", flags)) { |
| 244 en = opt_args("Enum", flags); | |
| 245 return enum_type[en] " " | |
| 246 } | |
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247 else if (!flag_set_p("Joined.*", flags) && !flag_set_p("Separate", flags)) { |
| 111 | 248 if (flag_set_p(".*Mask.*", flags)) { |
| 249 if (host_wide_int[var_name(flags)] == "yes") | |
| 250 return "HOST_WIDE_INT " | |
| 251 else | |
| 131 | 252 return "/* - */ int " |
| 111 | 253 } |
| 0 | 254 else |
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255 return "signed char " |
| 0 | 256 } |
| 257 else | |
| 258 return "const char *" | |
| 259 } | |
| 260 | |
| 261 # Given that an option has flags FLAGS, return an initializer for the | |
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262 # "var_enum", "var_type" and "var_value" fields of its cl_options[] entry. |
| 0 | 263 function var_set(flags) |
| 264 { | |
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265 if (flag_set_p("Defer", flags)) |
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266 return "0, CLVC_DEFER, 0" |
| 0 | 267 s = nth_arg(1, opt_args("Var", flags)) |
| 268 if (s != "") | |
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269 return "0, CLVC_EQUAL, " s |
| 0 | 270 s = opt_args("Mask", flags); |
| 271 if (s != "") { | |
| 272 vn = var_name(flags); | |
| 273 if (vn) | |
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274 return "0, CLVC_BIT_SET, OPTION_MASK_" s |
| 0 | 275 else |
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276 return "0, CLVC_BIT_SET, MASK_" s |
| 0 | 277 } |
| 278 s = nth_arg(0, opt_args("InverseMask", flags)); | |
| 279 if (s != "") { | |
| 280 vn = var_name(flags); | |
| 281 if (vn) | |
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282 return "0, CLVC_BIT_CLEAR, OPTION_MASK_" s |
| 0 | 283 else |
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284 return "0, CLVC_BIT_CLEAR, MASK_" s |
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285 } |
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286 if (flag_set_p("Enum.*", flags)) { |
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287 en = opt_args("Enum", flags); |
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288 return enum_index[en] ", CLVC_ENUM, 0" |
| 0 | 289 } |
| 290 if (var_type(flags) == "const char *") | |
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291 return "0, CLVC_STRING, 0" |
| 131 | 292 if (flag_set_p("ByteSize", flags)) |
| 293 return "0, CLVC_SIZE, 0" | |
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294 return "0, CLVC_BOOLEAN, 0" |
| 0 | 295 } |
| 296 | |
| 297 # Given that an option called NAME has flags FLAGS, return an initializer | |
| 298 # for the "flag_var" field of its cl_options[] entry. | |
| 299 function var_ref(name, flags) | |
| 300 { | |
| 301 name = var_name(flags) static_var(name, flags) | |
| 302 if (name != "") | |
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303 return "offsetof (struct gcc_options, x_" name ")" |
| 0 | 304 if (opt_args("Mask", flags) != "") |
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305 return "offsetof (struct gcc_options, x_target_flags)" |
| 0 | 306 if (opt_args("InverseMask", flags) != "") |
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307 return "offsetof (struct gcc_options, x_target_flags)" |
| 111 | 308 return "(unsigned short) -1" |
| 0 | 309 } |
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310 |
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311 # Given the option called NAME return a sanitized version of its name. |
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312 function opt_sanitized_name(name) |
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313 { |
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314 gsub ("[^" alnum "]", "_", name) |
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315 return name |
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316 } |
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317 |
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318 # Given the option called NAME return the appropriate enum for it. |
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319 function opt_enum(name) |
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320 { |
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321 return "OPT_" opt_sanitized_name(name) |
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322 } |
| 111 | 323 |
| 324 # Given the language called NAME return a sanitized version of its name. | |
| 325 function lang_sanitized_name(name) | |
| 326 { | |
| 327 gsub( "[^" alnum "_]", "X", name ) | |
| 328 return name | |
| 329 } | |
| 330 | |
| 331 # Search for a valid var_name among all OPTS equal to option NAME. | |
| 332 # If not found, return "". | |
| 333 function search_var_name(name, opt_numbers, opts, flags, n_opts) | |
| 334 { | |
| 335 opt_var_name = var_name(flags[opt_numbers[name]]); | |
| 336 if (opt_var_name != "") { | |
| 337 return opt_var_name; | |
| 338 } | |
| 339 for (k = 0; k < n_opts; k++) { | |
| 340 if (opts[k] == name && var_name(flags[k]) != "") { | |
| 341 return var_name(flags[k]); | |
| 342 } | |
| 343 } | |
| 344 return "" | |
| 345 } | |
| 346 | |
| 347 function integer_range_info(range_option, init, option) | |
| 348 { | |
| 349 if (range_option != "") { | |
| 145 | 350 ival = init + 0; |
| 351 start = nth_arg(0, range_option) + 0; | |
| 352 end = nth_arg(1, range_option) + 0; | |
| 353 if (init != "" && init != "-1" && (ival < start || ival > end)) | |
| 111 | 354 print "#error initial value " init " of '" option "' must be in range [" start "," end "]" |
| 355 return start ", " end | |
| 356 } | |
| 357 else | |
| 358 return "-1, -1" | |
| 359 } | |
| 360 | |
| 361 # Handle LangEnabledBy(ENABLED_BY_LANGS, ENABLEDBY_NAME, ENABLEDBY_POSARG, | |
| 362 # ENABLEDBY_NEGARG). This function does not return anything. | |
| 363 function lang_enabled_by(enabledby_langs, enabledby_name, enabledby_posarg, enabledby_negarg) | |
| 364 { | |
| 365 n_enabledby_arg_langs = split(enabledby_langs, enabledby_arg_langs, " "); | |
| 366 if (enabledby_posarg != "" && enabledby_negarg != "") { | |
| 367 with_args = "," enabledby_posarg "," enabledby_negarg | |
| 368 } else if (enabledby_posarg == "" && enabledby_negarg == "") { | |
| 369 with_args = "" | |
| 370 } else { | |
| 371 print "#error " opts[i] " LangEnabledBy("enabledby_langs","enabledby_name", " \ | |
| 372 enabledby_posarg", " enabledby_negargs \ | |
| 373 ") with three arguments, it should have either 2 or 4" | |
| 374 } | |
| 375 | |
| 376 n_enabledby_array = split(enabledby_name, enabledby_array, " \\|\\| "); | |
| 377 for (k = 1; k <= n_enabledby_array; k++) { | |
| 378 enabledby_index = opt_numbers[enabledby_array[k]]; | |
| 379 if (enabledby_index == "") { | |
| 380 print "#error " opts[i] " LangEnabledBy("enabledby_langs","enabledby_name", " \ | |
| 381 enabledby_posarg", " enabledby_negargs"), unknown option '" enabledby_name "'" | |
| 382 } else { | |
| 383 for (j = 1; j <= n_enabledby_arg_langs; j++) { | |
| 384 lang_name = lang_sanitized_name(enabledby_arg_langs[j]); | |
| 385 lang_index = lang_numbers[enabledby_arg_langs[j]]; | |
| 386 if (enables[lang_name,enabledby_array[k]] == "") { | |
| 387 enabledby[lang_name,n_enabledby_lang[lang_index]] = enabledby_array[k]; | |
| 388 n_enabledby_lang[lang_index]++; | |
| 389 } | |
| 390 enables[lang_name,enabledby_array[k]] \ | |
| 391 = enables[lang_name,enabledby_array[k]] opts[i] with_args ";"; | |
| 392 } | |
| 393 } | |
| 394 } | |
| 395 } |