Mercurial > hg > CbC > CbC_gcc
annotate gcc/opts.h @ 158:494b0b89df80 default tip
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 1830386684a0 |
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rev | line source |
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0 | 1 /* Command line option handling. |
145 | 2 Copyright (C) 2002-2020 Free Software Foundation, Inc. |
0 | 3 |
4 This file is part of GCC. | |
5 | |
6 GCC is free software; you can redistribute it and/or modify it under | |
7 the terms of the GNU General Public License as published by the Free | |
8 Software Foundation; either version 3, or (at your option) any later | |
9 version. | |
10 | |
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 for more details. | |
15 | |
16 You should have received a copy of the GNU General Public License | |
17 along with GCC; see the file COPYING3. If not see | |
18 <http://www.gnu.org/licenses/>. */ | |
19 | |
20 #ifndef GCC_OPTS_H | |
21 #define GCC_OPTS_H | |
22 | |
111 | 23 #include "obstack.h" |
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24 |
0 | 25 /* Specifies how a switch's VAR_VALUE relates to its FLAG_VAR. */ |
26 enum cl_var_type { | |
27 /* The switch is enabled when FLAG_VAR is nonzero. */ | |
28 CLVC_BOOLEAN, | |
29 | |
30 /* The switch is enabled when FLAG_VAR == VAR_VALUE. */ | |
31 CLVC_EQUAL, | |
32 | |
33 /* The switch is enabled when VAR_VALUE is not set in FLAG_VAR. */ | |
34 CLVC_BIT_CLEAR, | |
35 | |
36 /* The switch is enabled when VAR_VALUE is set in FLAG_VAR. */ | |
37 CLVC_BIT_SET, | |
38 | |
131 | 39 /* The switch is enabled when FLAG_VAR is less than HOST_WIDE_INT_M1U. */ |
40 CLVC_SIZE, | |
41 | |
0 | 42 /* The switch takes a string argument and FLAG_VAR points to that |
43 argument. */ | |
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44 CLVC_STRING, |
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45 |
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46 /* The switch takes an enumerated argument (VAR_ENUM says what |
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47 enumeration) and FLAG_VAR points to that argument. */ |
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48 CLVC_ENUM, |
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49 |
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50 /* The switch should be stored in the VEC pointed to by FLAG_VAR for |
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51 later processing. */ |
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52 CLVC_DEFER |
0 | 53 }; |
54 | |
55 struct cl_option | |
56 { | |
111 | 57 /* Text of the option, including initial '-'. */ |
0 | 58 const char *opt_text; |
111 | 59 /* Help text for --help, or NULL. */ |
0 | 60 const char *help; |
111 | 61 /* Error message for missing argument, or NULL. */ |
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62 const char *missing_argument_error; |
111 | 63 /* Warning to give when this option is used, or NULL. */ |
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64 const char *warn_message; |
111 | 65 /* Argument of alias target when positive option given, or NULL. */ |
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66 const char *alias_arg; |
111 | 67 /* Argument of alias target when negative option given, or NULL. */ |
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68 const char *neg_alias_arg; |
111 | 69 /* Alias target, or N_OPTS if not an alias. */ |
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70 unsigned short alias_target; |
111 | 71 /* Previous option that is an initial substring of this one, or |
72 N_OPTS if none. */ | |
0 | 73 unsigned short back_chain; |
111 | 74 /* Option length, not including initial '-'. */ |
0 | 75 unsigned char opt_len; |
131 | 76 /* Next option in a sequence marked with Negative, or -1 if none. |
77 For a single option with both a negative and a positve form | |
78 (such as -Wall and -Wno-all), NEG_IDX is equal to the option's | |
79 own index (i.e., cl_options[IDX].neg_idx == IDX holds). */ | |
0 | 80 int neg_index; |
111 | 81 /* CL_* flags for this option. */ |
0 | 82 unsigned int flags; |
111 | 83 /* Disabled in this configuration. */ |
84 BOOL_BITFIELD cl_disabled : 1; | |
85 /* Options marked with CL_SEPARATE take a number of separate | |
86 arguments (1 to 4) that is one more than the number in this | |
87 bit-field. */ | |
88 unsigned int cl_separate_nargs : 2; | |
89 /* Option is an alias when used with separate argument. */ | |
90 BOOL_BITFIELD cl_separate_alias : 1; | |
91 /* Alias to negative form of option. */ | |
92 BOOL_BITFIELD cl_negative_alias : 1; | |
93 /* Option takes no argument in the driver. */ | |
94 BOOL_BITFIELD cl_no_driver_arg : 1; | |
95 /* Reject this option in the driver. */ | |
96 BOOL_BITFIELD cl_reject_driver : 1; | |
97 /* Reject no- form. */ | |
98 BOOL_BITFIELD cl_reject_negative : 1; | |
99 /* Missing argument OK (joined). */ | |
100 BOOL_BITFIELD cl_missing_ok : 1; | |
101 /* Argument is an integer >=0. */ | |
102 BOOL_BITFIELD cl_uinteger : 1; | |
103 /* Argument is a HOST_WIDE_INT. */ | |
104 BOOL_BITFIELD cl_host_wide_int : 1; | |
105 /* Argument should be converted to lowercase. */ | |
106 BOOL_BITFIELD cl_tolower : 1; | |
107 /* Report argument with -fverbose-asm */ | |
108 BOOL_BITFIELD cl_report : 1; | |
131 | 109 /* Argument is an unsigned integer with an optional byte suffix. */ |
110 BOOL_BITFIELD cl_byte_size: 1; | |
111 | 111 /* Offset of field for this option in struct gcc_options, or |
112 (unsigned short) -1 if none. */ | |
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113 unsigned short flag_var_offset; |
111 | 114 /* Index in cl_enums of enum used for this option's arguments, for |
115 CLVC_ENUM options. */ | |
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116 unsigned short var_enum; |
111 | 117 /* How this option's value is determined and sets a field. */ |
0 | 118 enum cl_var_type var_type; |
111 | 119 /* Value or bit-mask with which to set a field. */ |
120 HOST_WIDE_INT var_value; | |
121 /* Range info minimum, or -1. */ | |
122 int range_min; | |
123 /* Range info maximum, or -1. */ | |
124 int range_max; | |
0 | 125 }; |
126 | |
127 /* Records that the state of an option consists of SIZE bytes starting | |
128 at DATA. DATA might point to CH in some cases. */ | |
129 struct cl_option_state { | |
130 const void *data; | |
131 size_t size; | |
132 char ch; | |
133 }; | |
134 | |
135 extern const struct cl_option cl_options[]; | |
136 extern const unsigned int cl_options_count; | |
137 extern const char *const lang_names[]; | |
138 extern const unsigned int cl_lang_count; | |
139 | |
111 | 140 #define CL_PARAMS (1U << 16) /* Fake entry. Used to display --param info with --help. */ |
141 #define CL_WARNING (1U << 17) /* Enables an (optional) warning message. */ | |
142 #define CL_OPTIMIZATION (1U << 18) /* Enables an (optional) optimization. */ | |
143 #define CL_DRIVER (1U << 19) /* Driver option. */ | |
144 #define CL_TARGET (1U << 20) /* Target-specific option. */ | |
145 #define CL_COMMON (1U << 21) /* Language-independent. */ | |
0 | 146 |
147 #define CL_MIN_OPTION_CLASS CL_PARAMS | |
148 #define CL_MAX_OPTION_CLASS CL_COMMON | |
149 | |
150 /* From here on the bits describe attributes of the options. | |
151 Before this point the bits have described the class of the option. | |
152 This distinction is important because --help will not list options | |
153 which only have these higher bits set. */ | |
154 | |
111 | 155 #define CL_JOINED (1U << 22) /* If takes joined argument. */ |
156 #define CL_SEPARATE (1U << 23) /* If takes a separate argument. */ | |
157 #define CL_UNDOCUMENTED (1U << 24) /* Do not output with --help. */ | |
158 #define CL_NO_DWARF_RECORD (1U << 25) /* Do not add to producer string. */ | |
159 #define CL_PCH_IGNORE (1U << 26) /* Do compare state for pch. */ | |
0 | 160 |
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161 /* Flags for an enumerated option argument. */ |
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162 #define CL_ENUM_CANONICAL (1 << 0) /* Canonical for this value. */ |
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163 #define CL_ENUM_DRIVER_ONLY (1 << 1) /* Only accepted in the driver. */ |
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164 |
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165 /* Structure describing an enumerated option argument. */ |
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166 |
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167 struct cl_enum_arg |
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168 { |
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169 /* The argument text, or NULL at the end of the array. */ |
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170 const char *arg; |
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171 |
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172 /* The corresponding integer value. */ |
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173 int value; |
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174 |
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175 /* Flags associated with this argument. */ |
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176 unsigned int flags; |
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177 }; |
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178 |
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179 /* Structure describing an enumerated set of option arguments. */ |
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180 |
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181 struct cl_enum |
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182 { |
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183 /* Help text, or NULL if the values should not be listed in --help |
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184 output. */ |
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185 const char *help; |
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186 |
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187 /* Error message for unknown arguments, or NULL to use a generic |
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188 error. */ |
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189 const char *unknown_error; |
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190 |
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191 /* Array of possible values. */ |
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192 const struct cl_enum_arg *values; |
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193 |
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194 /* The size of the type used to store a value. */ |
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195 size_t var_size; |
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196 |
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197 /* Function to set a variable of this type. */ |
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198 void (*set) (void *var, int value); |
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199 |
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200 /* Function to get the value of a variable of this type. */ |
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201 int (*get) (const void *var); |
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202 }; |
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203 |
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204 extern const struct cl_enum cl_enums[]; |
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205 extern const unsigned int cl_enums_count; |
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206 |
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207 /* Possible ways in which a command-line option may be erroneous. |
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208 These do not include not being known at all; an option index of |
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209 OPT_SPECIAL_unknown is used for that. */ |
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210 |
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211 #define CL_ERR_DISABLED (1 << 0) /* Disabled in this configuration. */ |
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212 #define CL_ERR_MISSING_ARG (1 << 1) /* Argument required but missing. */ |
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213 #define CL_ERR_WRONG_LANG (1 << 2) /* Option for wrong language. */ |
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214 #define CL_ERR_UINT_ARG (1 << 3) /* Bad unsigned integer argument. */ |
111 | 215 #define CL_ERR_INT_RANGE_ARG (1 << 4) /* Bad unsigned integer argument. */ |
216 #define CL_ERR_ENUM_ARG (1 << 5) /* Bad enumerated argument. */ | |
217 #define CL_ERR_NEGATIVE (1 << 6) /* Negative form of option | |
67
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218 not permitted (together |
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219 with OPT_SPECIAL_unknown). */ |
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220 |
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221 /* Structure describing the result of decoding an option. */ |
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222 |
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223 struct cl_decoded_option |
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224 { |
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225 /* The index of this option, or an OPT_SPECIAL_* value for |
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226 non-options and unknown options. */ |
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227 size_t opt_index; |
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228 |
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229 /* Any warning to give for use of this option, or NULL if none. */ |
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230 const char *warn_message; |
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231 |
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232 /* The string argument, or NULL if none. For OPT_SPECIAL_* cases, |
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233 the option or non-option command-line argument. */ |
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234 const char *arg; |
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235 |
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236 /* The original text of option plus arguments, with separate argv |
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237 elements concatenated into one string with spaces separating |
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238 them. This is for such uses as diagnostics and |
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239 -frecord-gcc-switches. */ |
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240 const char *orig_option_with_args_text; |
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241 |
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242 /* The canonical form of the option and its argument, for when it is |
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243 necessary to reconstruct argv elements (in particular, for |
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244 processing specs and passing options to subprocesses from the |
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245 driver). */ |
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246 const char *canonical_option[4]; |
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247 |
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248 /* The number of elements in the canonical form of the option and |
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249 arguments; always at least 1. */ |
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250 size_t canonical_option_num_elements; |
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251 |
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252 /* For a boolean option, 1 for the true case and 0 for the "no-" |
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253 case. For an unsigned integer option, the value of the |
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254 argument. 1 in all other cases. */ |
131 | 255 HOST_WIDE_INT value; |
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256 |
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257 /* Any flags describing errors detected in this option. */ |
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258 int errors; |
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259 }; |
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260 |
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261 /* Structure describing an option deferred for handling after the main |
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262 option handlers. */ |
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263 |
111 | 264 struct cl_deferred_option |
67
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265 { |
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266 /* Elements from struct cl_decoded_option used for deferred |
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267 options. */ |
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268 size_t opt_index; |
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269 const char *arg; |
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270 int value; |
111 | 271 }; |
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272 |
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273 /* Structure describing a single option-handling callback. */ |
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274 |
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275 struct cl_option_handler_func |
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276 { |
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277 /* The function called to handle the option. */ |
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278 bool (*handler) (struct gcc_options *opts, |
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279 struct gcc_options *opts_set, |
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280 const struct cl_decoded_option *decoded, |
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281 unsigned int lang_mask, int kind, location_t loc, |
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282 const struct cl_option_handlers *handlers, |
111 | 283 diagnostic_context *dc, |
284 void (*target_option_override_hook) (void)); | |
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285 |
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286 /* The mask that must have some bit in common with the flags for the |
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287 option for this particular handler to be used. */ |
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288 unsigned int mask; |
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289 }; |
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290 |
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291 /* Structure describing the callbacks used in handling options. */ |
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292 |
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293 struct cl_option_handlers |
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294 { |
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295 /* Callback for an unknown option to determine whether to give an |
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296 error for it, and possibly store information to diagnose the |
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297 option at a later point. Return true if an error should be |
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298 given, false otherwise. */ |
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299 bool (*unknown_option_callback) (const struct cl_decoded_option *decoded); |
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300 |
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301 /* Callback to handle, and possibly diagnose, an option for another |
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302 language. */ |
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303 void (*wrong_lang_callback) (const struct cl_decoded_option *decoded, |
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304 unsigned int lang_mask); |
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305 |
111 | 306 /* Target option override hook. */ |
307 void (*target_option_override_hook) (void); | |
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308 |
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309 /* The number of individual handlers. */ |
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310 size_t num_handlers; |
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311 |
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312 /* The handlers themselves. */ |
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313 struct cl_option_handler_func handlers[3]; |
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314 }; |
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315 |
111 | 316 /* Hold command-line options associated with stack limitation. */ |
317 extern const char *opt_fstack_limit_symbol_arg; | |
318 extern int opt_fstack_limit_register_no; | |
319 | |
0 | 320 /* Input file names. */ |
321 | |
322 extern const char **in_fnames; | |
323 | |
324 /* The count of input filenames. */ | |
325 | |
326 extern unsigned num_in_fnames; | |
327 | |
111 | 328 extern char *opts_concat (const char *first, ...); |
329 | |
330 /* Obstack for option strings. */ | |
331 | |
332 extern struct obstack opts_obstack; | |
333 | |
334 size_t find_opt (const char *input, unsigned int lang_mask); | |
131 | 335 extern HOST_WIDE_INT integral_argument (const char *arg, int * = NULL, bool = false); |
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336 extern bool enum_value_to_arg (const struct cl_enum_arg *enum_args, |
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337 const char **argp, int value, |
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338 unsigned int lang_mask); |
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339 extern void decode_cmdline_options_to_array (unsigned int argc, |
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340 const char **argv, |
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341 unsigned int lang_mask, |
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342 struct cl_decoded_option **decoded_options, |
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343 unsigned int *decoded_options_count); |
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344 extern void init_options_once (void); |
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345 extern void init_options_struct (struct gcc_options *opts, |
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346 struct gcc_options *opts_set); |
111 | 347 extern void init_opts_obstack (void); |
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348 extern void decode_cmdline_options_to_array_default_mask (unsigned int argc, |
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349 const char **argv, |
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350 struct cl_decoded_option **decoded_options, |
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351 unsigned int *decoded_options_count); |
111 | 352 extern void set_default_handlers (struct cl_option_handlers *handlers, |
353 void (*target_option_override_hook) (void)); | |
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354 extern void decode_options (struct gcc_options *opts, |
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355 struct gcc_options *opts_set, |
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356 struct cl_decoded_option *decoded_options, |
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357 unsigned int decoded_options_count, |
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358 location_t loc, |
111 | 359 diagnostic_context *dc, |
360 void (*target_option_override_hook) (void)); | |
145 | 361 extern int option_enabled (int opt_idx, unsigned lang_mask, void *opts); |
362 | |
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363 extern bool get_option_state (struct gcc_options *, int, |
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364 struct cl_option_state *); |
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365 extern void set_option (struct gcc_options *opts, |
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366 struct gcc_options *opts_set, |
131 | 367 int opt_index, HOST_WIDE_INT value, const char *arg, |
368 int kind, location_t loc, diagnostic_context *dc); | |
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369 extern void *option_flag_var (int opt_index, struct gcc_options *opts); |
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370 bool handle_generated_option (struct gcc_options *opts, |
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371 struct gcc_options *opts_set, |
131 | 372 size_t opt_index, const char *arg, |
373 HOST_WIDE_INT value, | |
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374 unsigned int lang_mask, int kind, location_t loc, |
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375 const struct cl_option_handlers *handlers, |
111 | 376 bool generated_p, diagnostic_context *dc); |
131 | 377 void generate_option (size_t opt_index, const char *arg, HOST_WIDE_INT value, |
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378 unsigned int lang_mask, |
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379 struct cl_decoded_option *decoded); |
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380 void generate_option_input_file (const char *file, |
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381 struct cl_decoded_option *decoded); |
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382 extern void read_cmdline_option (struct gcc_options *opts, |
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383 struct gcc_options *opts_set, |
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384 struct cl_decoded_option *decoded, |
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385 location_t loc, |
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386 unsigned int lang_mask, |
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387 const struct cl_option_handlers *handlers, |
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388 diagnostic_context *dc); |
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389 extern void control_warning_option (unsigned int opt_index, int kind, |
111 | 390 const char *arg, bool imply, location_t loc, |
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391 unsigned int lang_mask, |
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392 const struct cl_option_handlers *handlers, |
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393 struct gcc_options *opts, |
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394 struct gcc_options *opts_set, |
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395 diagnostic_context *dc); |
111 | 396 extern char *write_langs (unsigned int mask); |
0 | 397 extern void print_ignored_options (void); |
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398 extern void handle_common_deferred_options (void); |
111 | 399 unsigned int parse_sanitizer_options (const char *, location_t, int, |
400 unsigned int, int, bool); | |
401 | |
402 unsigned int parse_no_sanitize_attribute (char *value); | |
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403 extern bool common_handle_option (struct gcc_options *opts, |
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404 struct gcc_options *opts_set, |
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405 const struct cl_decoded_option *decoded, |
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406 unsigned int lang_mask, int kind, |
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407 location_t loc, |
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408 const struct cl_option_handlers *handlers, |
111 | 409 diagnostic_context *dc, |
410 void (*target_option_override_hook) (void)); | |
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411 extern bool target_handle_option (struct gcc_options *opts, |
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412 struct gcc_options *opts_set, |
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413 const struct cl_decoded_option *decoded, |
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414 unsigned int lang_mask, int kind, |
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415 location_t loc, |
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416 const struct cl_option_handlers *handlers, |
111 | 417 diagnostic_context *dc, |
418 void (*target_option_override_hook) (void)); | |
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419 extern void finish_options (struct gcc_options *opts, |
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420 struct gcc_options *opts_set, |
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421 location_t loc); |
145 | 422 extern void print_help (struct gcc_options *opts, unsigned int lang_mask, const |
423 char *help_option_argument); | |
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424 extern void default_options_optimization (struct gcc_options *opts, |
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425 struct gcc_options *opts_set, |
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426 struct cl_decoded_option *decoded_options, |
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427 unsigned int decoded_options_count, |
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428 location_t loc, |
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429 unsigned int lang_mask, |
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430 const struct cl_option_handlers *handlers, |
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431 diagnostic_context *dc); |
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432 extern void set_struct_debug_option (struct gcc_options *opts, |
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433 location_t loc, |
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434 const char *value); |
111 | 435 extern bool opt_enum_arg_to_value (size_t opt_index, const char *arg, |
131 | 436 int *value, |
437 unsigned int lang_mask); | |
111 | 438 |
439 extern const struct sanitizer_opts_s | |
440 { | |
441 const char *const name; | |
442 unsigned int flag; | |
443 size_t len; | |
444 bool can_recover; | |
445 } sanitizer_opts[]; | |
446 | |
145 | 447 extern vec<const char *> help_option_arguments; |
448 | |
111 | 449 extern void add_misspelling_candidates (auto_vec<char *> *candidates, |
450 const struct cl_option *option, | |
451 const char *base_option); | |
452 extern const char *candidates_list_and_hint (const char *arg, char *&str, | |
453 const auto_vec <const char *> & | |
454 candidates); | |
455 | |
131 | 456 |
457 extern bool parse_and_check_align_values (const char *flag, | |
458 const char *name, | |
459 auto_vec<unsigned> &result_values, | |
460 bool report_error, | |
461 location_t loc); | |
462 | |
145 | 463 /* Set OPTION in OPTS to VALUE if the option is not set in OPTS_SET. */ |
464 | |
465 #define SET_OPTION_IF_UNSET(OPTS, OPTS_SET, OPTION, VALUE) \ | |
466 do \ | |
467 { \ | |
468 if (!(OPTS_SET)->x_ ## OPTION) \ | |
469 (OPTS)->x_ ## OPTION = VALUE; \ | |
470 } \ | |
471 while (false) | |
472 | |
0 | 473 #endif |