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d5bf7b64 | 1 | /* Declarations for insn-output.c and other code to write to asm_out_file. |
2 | These functions are defined in final.c, and varasm.c. | |
fbd26352 | 3 | Copyright (C) 1987-2019 Free Software Foundation, Inc. |
26b071b0 | 4 | |
f12b58b3 | 5 | This file is part of GCC. |
26b071b0 | 6 | |
f12b58b3 | 7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
8c4c00c1 | 9 | Software Foundation; either version 3, or (at your option) any later |
f12b58b3 | 10 | version. |
26b071b0 | 11 | |
f12b58b3 | 12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
26b071b0 | 16 | |
17 | You should have received a copy of the GNU General Public License | |
8c4c00c1 | 18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
26b071b0 | 20 | |
10f913f2 | 21 | #ifndef GCC_OUTPUT_H |
22 | #define GCC_OUTPUT_H | |
23 | ||
82b5e01f | 24 | /* Initialize data in final at the beginning of a compilation. */ |
3ad4992f | 25 | extern void init_final (const char *); |
82b5e01f | 26 | |
82b5e01f | 27 | /* Enable APP processing of subsequent output. |
28 | Used before the output from an `asm' statement. */ | |
3ad4992f | 29 | extern void app_enable (void); |
82b5e01f | 30 | |
31 | /* Disable APP processing of subsequent output. | |
32 | Called from varasm.c before most kinds of output. */ | |
3ad4992f | 33 | extern void app_disable (void); |
82b5e01f | 34 | |
072dd462 | 35 | /* Return the number of slots filled in the current |
82b5e01f | 36 | delayed branch sequence (we don't count the insn needing the |
37 | delay slot). Zero if not in a delayed branch sequence. */ | |
3ad4992f | 38 | extern int dbr_sequence_length (void); |
82b5e01f | 39 | |
40 | /* Indicate that branch shortening hasn't yet been done. */ | |
3ad4992f | 41 | extern void init_insn_lengths (void); |
82b5e01f | 42 | |
43 | /* Obtain the current length of an insn. If branch shortening has been done, | |
44 | get its actual length. Otherwise, get its maximum length. */ | |
d3ffa7b4 | 45 | extern int get_attr_length (rtx_insn *); |
82b5e01f | 46 | |
16afa8ae | 47 | /* Obtain the current length of an insn. If branch shortening has been done, |
48 | get its actual length. Otherwise, get its minimum length. */ | |
d3ffa7b4 | 49 | extern int get_attr_min_length (rtx_insn *); |
16afa8ae | 50 | |
82b5e01f | 51 | /* Make a pass over all insns and compute their actual lengths by shortening |
52 | any branches of variable length if possible. */ | |
91211f47 | 53 | extern void shorten_branches (rtx_insn *); |
82b5e01f | 54 | |
3677652f | 55 | const char *get_some_local_dynamic_name (); |
56 | ||
82b5e01f | 57 | /* Output assembler code for the start of a function, |
58 | and initialize some of the variables in this file | |
59 | for the new function. The label for the function and associated | |
60 | assembler pseudo-ops have already been output in | |
61 | `assemble_start_function'. */ | |
2007d20f | 62 | extern void final_start_function (rtx_insn *, FILE *, int); |
82b5e01f | 63 | |
64 | /* Output assembler code for the end of a function. | |
65 | For clarity, args are same as those of `final_start_function' | |
66 | even though not all of them are needed. */ | |
3ad4992f | 67 | extern void final_end_function (void); |
82b5e01f | 68 | |
69 | /* Output assembler code for some insns: all or part of a function. */ | |
4f124fa9 | 70 | extern void final (rtx_insn *, FILE *, int); |
82b5e01f | 71 | |
fbf5169c | 72 | /* The final scan for one insn, INSN. Args are same as in `final', except |
73 | that INSN is the insn being scanned. Value returned is the next insn to | |
74 | be scanned. */ | |
cdf962b7 | 75 | extern rtx_insn *final_scan_insn (rtx_insn *, FILE *, int, int, int *); |
fbf5169c | 76 | |
82b5e01f | 77 | /* Replace a SUBREG with a REG or a MEM, based on the thing it is a |
78 | subreg of. */ | |
c6a6cdaa | 79 | extern rtx alter_subreg (rtx *, bool); |
82b5e01f | 80 | |
99b6f860 | 81 | /* Print an operand using machine-dependent assembler syntax. */ |
82 | extern void output_operand (rtx, int); | |
83 | ||
82b5e01f | 84 | /* Report inconsistency between the assembler template and the operands. |
85 | In an `asm', it's the user's fault; otherwise, the compiler's fault. */ | |
3ad4992f | 86 | extern void output_operand_lossage (const char *, ...) ATTRIBUTE_PRINTF_1; |
7ba2cd99 | 87 | |
26b071b0 | 88 | /* Output a string of assembler code, substituting insn operands. |
89 | Defined in final.c. */ | |
3ad4992f | 90 | extern void output_asm_insn (const char *, rtx *); |
26b071b0 | 91 | |
0e93a6ac | 92 | /* Compute a worst-case reference address of a branch so that it |
93 | can be safely used in the presence of aligned labels. | |
94 | Defined in final.c. */ | |
297a1f5a | 95 | extern int insn_current_reference_address (rtx_insn *); |
0e93a6ac | 96 | |
849674a3 | 97 | /* Find the alignment associated with a CODE_LABEL. |
98 | Defined in final.c. */ | |
6fceef7a | 99 | extern align_flags label_to_alignment (rtx); |
01e60dc2 | 100 | |
82b5e01f | 101 | /* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol. */ |
3ad4992f | 102 | extern void output_asm_label (rtx); |
82b5e01f | 103 | |
af2a449c | 104 | /* Marks SYMBOL_REFs in x as referenced through use of assemble_external. */ |
105 | extern void mark_symbol_refs_as_used (rtx); | |
106 | ||
3c047fe9 | 107 | /* Print a memory reference operand for address X with access mode MODE |
82b5e01f | 108 | using machine-dependent assembler syntax. */ |
3c047fe9 | 109 | extern void output_address (machine_mode, rtx); |
50ec54d9 | 110 | |
4d3281c9 | 111 | /* Print an integer constant expression in assembler syntax. |
112 | Addition and subtraction are the only arithmetic | |
113 | that may appear in these expressions. */ | |
3ad4992f | 114 | extern void output_addr_const (FILE *, rtx); |
4d3281c9 | 115 | |
82b5e01f | 116 | /* Output a string of assembler code, substituting numbers, strings |
117 | and fixed syntactic prefixes. */ | |
c54d077b | 118 | #if GCC_VERSION >= 3004 |
119 | #define ATTRIBUTE_ASM_FPRINTF(m, n) __attribute__ ((__format__ (__asm_fprintf__, m, n))) ATTRIBUTE_NONNULL(m) | |
c54d077b | 120 | #else |
121 | #define ATTRIBUTE_ASM_FPRINTF(m, n) ATTRIBUTE_NONNULL(m) | |
122 | #endif | |
123 | ||
c0e76f1f | 124 | extern void fprint_whex (FILE *, unsigned HOST_WIDE_INT); |
125 | extern void fprint_ul (FILE *, unsigned long); | |
126 | extern int sprint_ul (char *, unsigned long); | |
127 | ||
3ad4992f | 128 | extern void asm_fprintf (FILE *file, const char *p, ...) |
129 | ATTRIBUTE_ASM_FPRINTF(2, 3); | |
82b5e01f | 130 | |
82b5e01f | 131 | /* Return nonzero if this function has no function calls. */ |
3ad4992f | 132 | extern int leaf_function_p (void); |
82b5e01f | 133 | |
edc2a478 | 134 | /* Return 1 if branch is a forward branch. |
072dd462 | 135 | Uses insn_shuid array, so it works only in the final pass. May be used by |
136 | output templates to add branch prediction hints, for example. */ | |
82f53c1f | 137 | extern int final_forward_branch_p (rtx_insn *); |
072dd462 | 138 | |
82b5e01f | 139 | /* Return 1 if this function uses only the registers that can be |
140 | safely renumbered. */ | |
3ad4992f | 141 | extern int only_leaf_regs_used (void); |
82b5e01f | 142 | |
143 | /* Scan IN_RTX and its subexpressions, and renumber all regs into those | |
144 | available in leaf functions. */ | |
3ad4992f | 145 | extern void leaf_renumber_regs_insn (rtx); |
500993f8 | 146 | |
ae9660c8 | 147 | /* Locate the proper template for the given insn-code. */ |
6b63fbbe | 148 | extern const char *get_insn_template (int, rtx_insn *); |
ae9660c8 | 149 | |
454fcc7a | 150 | /* Functions in varasm.c. */ |
151 | ||
ebd9163c | 152 | /* Emit any pending weak declarations. */ |
3ad4992f | 153 | extern void weak_finish (void); |
ebd9163c | 154 | |
454fcc7a | 155 | /* Decode an `asm' spec for a declaration as a register name. |
156 | Return the register number, or -1 if nothing specified, | |
157 | or -2 if the ASMSPEC is not `cc' or `memory' and is not recognized, | |
158 | or -3 if ASMSPEC is `cc' and is not recognized, | |
159 | or -4 if ASMSPEC is `memory' and is not recognized. | |
160 | Accept an exact spelling or a decimal number. | |
161 | Prefixes such as % are optional. */ | |
3ad4992f | 162 | extern int decode_reg_name (const char *); |
454fcc7a | 163 | |
ea26afd4 | 164 | /* Similar to decode_reg_name, but takes an extra parameter that is a |
165 | pointer to the number of (internal) registers described by the | |
166 | external name. */ | |
167 | extern int decode_reg_name_and_count (const char *, int *); | |
168 | ||
afea39ad | 169 | extern void do_assemble_alias (tree, tree); |
cd03a192 | 170 | |
3ad4992f | 171 | extern void default_assemble_visibility (tree, int); |
b4cf9ec1 | 172 | |
454fcc7a | 173 | /* Output a string of literal assembler code |
174 | for an `asm' keyword used between functions. */ | |
3ad4992f | 175 | extern void assemble_asm (tree); |
454fcc7a | 176 | |
7260826d | 177 | /* Get the function's name from a decl, as described by its RTL. */ |
178 | extern const char *get_fnname_from_decl (tree); | |
179 | ||
454fcc7a | 180 | /* Output assembler code for the constant pool of a function and associated |
181 | with defining the name of the function. DECL describes the function. | |
182 | NAME is the function's name. For the constant pool, we use the current | |
183 | constant pool data. */ | |
3ad4992f | 184 | extern void assemble_start_function (tree, const char *); |
454fcc7a | 185 | |
186 | /* Output assembler code associated with defining the size of the | |
187 | function. DECL describes the function. NAME is the function's name. */ | |
3ad4992f | 188 | extern void assemble_end_function (tree, const char *); |
454fcc7a | 189 | |
454fcc7a | 190 | /* Assemble everything that is needed for a variable or function declaration. |
191 | Not used for automatic variables, and not used for function definitions. | |
192 | Should not be called for variables of incomplete structure type. | |
193 | ||
194 | TOP_LEVEL is nonzero if this variable has file scope. | |
195 | AT_END is nonzero if this is the special handling, at end of compilation, | |
196 | to define things that have had only tentative definitions. | |
197 | DONT_OUTPUT_DATA if nonzero means don't actually output the | |
198 | initial value (that will be done by the caller). */ | |
3ad4992f | 199 | extern void assemble_variable (tree, int, int, int); |
454fcc7a | 200 | |
b710ec85 | 201 | /* Put the vtable verification constructor initialization function |
202 | into the preinit array. */ | |
203 | extern void assemble_vtv_preinit_initializer (tree); | |
204 | ||
7260826d | 205 | /* Assemble everything that is needed for a variable declaration that has |
206 | no definition in the current translation unit. */ | |
207 | extern void assemble_undefined_decl (tree); | |
208 | ||
e3a1de9d | 209 | /* Compute the alignment of variable specified by DECL. |
210 | DONT_OUTPUT_DATA is from assemble_variable. */ | |
211 | extern void align_variable (tree decl, bool dont_output_data); | |
212 | ||
7920eed5 | 213 | /* Queue for outputting something to declare an external symbol to the |
44b23e05 | 214 | assembler. (Most assemblers don't need this, so we normally output |
215 | nothing.) Do nothing if DECL is not external. */ | |
3ad4992f | 216 | extern void assemble_external (tree); |
454fcc7a | 217 | |
6e844d29 | 218 | /* Assemble code to leave SIZE bytes of zeros. */ |
3ad4992f | 219 | extern void assemble_zeros (unsigned HOST_WIDE_INT); |
6e844d29 | 220 | |
221 | /* Assemble an alignment pseudo op for an ALIGN-bit boundary. */ | |
63cd2315 | 222 | extern void assemble_align (unsigned int); |
6e844d29 | 223 | |
224 | /* Assemble a string constant with the specified C string as contents. */ | |
3ad4992f | 225 | extern void assemble_string (const char *, int); |
6e844d29 | 226 | |
454fcc7a | 227 | /* Similar, for calling a library function FUN. */ |
3ad4992f | 228 | extern void assemble_external_libcall (rtx); |
82b5e01f | 229 | |
454fcc7a | 230 | /* Assemble a label named NAME. */ |
427eb138 | 231 | extern void assemble_label (FILE *, const char *); |
454fcc7a | 232 | |
48126f0c | 233 | /* Output to FILE (an assembly file) a reference to NAME. If NAME |
234 | starts with a *, the rest of NAME is output verbatim. Otherwise | |
235 | NAME is transformed in a target-specific way (usually by the | |
236 | addition of an underscore). */ | |
237 | extern void assemble_name_raw (FILE *, const char *); | |
238 | ||
239 | /* Like assemble_name_raw, but should be used when NAME might refer to | |
240 | an entity that is also represented as a tree (like a function or | |
241 | variable). If NAME does refer to such an entity, that entity will | |
242 | be marked as referenced. */ | |
3ad4992f | 243 | extern void assemble_name (FILE *, const char *); |
454fcc7a | 244 | |
58356836 | 245 | /* Return the assembler directive for creating a given kind of integer |
246 | object. SIZE is the number of bytes in the object and ALIGNED_P | |
247 | indicates whether it is known to be aligned. Return NULL if the | |
248 | assembly dialect has no such directive. | |
249 | ||
250 | The returned string should be printed at the start of a new line and | |
251 | be followed immediately by the object's initial value. */ | |
3ad4992f | 252 | extern const char *integer_asm_op (int, int); |
58356836 | 253 | |
58356836 | 254 | /* Use directive OP to assemble an integer object X. Print OP at the |
255 | start of the line, followed immediately by the value of X. */ | |
3ad4992f | 256 | extern void assemble_integer_with_op (const char *, rtx); |
58356836 | 257 | |
258 | /* The default implementation of the asm_out.integer target hook. */ | |
3ad4992f | 259 | extern bool default_assemble_integer (rtx, unsigned int, int); |
58356836 | 260 | |
09d688ff | 261 | /* Assemble the integer constant X into an object of SIZE bytes. ALIGN is |
262 | the alignment of the integer in bits. Return 1 if we were able to output | |
1fa3a8f6 | 263 | the constant, otherwise 0. If FORCE is nonzero the constant must |
264 | be outputable. */ | |
3ad4992f | 265 | extern bool assemble_integer (rtx, unsigned, unsigned, int); |
58356836 | 266 | |
3b73548b | 267 | /* Return section for TEXT_SECITON_NAME if DECL or DECL_SECTION_NAME (DECL) |
268 | is NULL. */ | |
269 | extern section *get_named_text_section (tree, const char *, const char *); | |
270 | ||
58356836 | 271 | /* An interface to assemble_integer for the common case in which a value is |
272 | fully aligned and must be printed. VALUE is the value of the integer | |
273 | object and SIZE is the number of bytes it contains. */ | |
274 | #define assemble_aligned_integer(SIZE, VALUE) \ | |
275 | assemble_integer (VALUE, SIZE, (SIZE) * BITS_PER_UNIT, 1) | |
454fcc7a | 276 | |
292237f3 | 277 | /* Assemble the floating-point constant D into an object of size MODE. ALIGN |
278 | is the alignment of the constant in bits. If REVERSE is true, D is output | |
279 | in reverse storage order. */ | |
0f97e0f5 | 280 | extern void assemble_real (REAL_VALUE_TYPE, scalar_float_mode, unsigned, |
292237f3 | 281 | bool = false); |
454fcc7a | 282 | |
6c181a06 | 283 | /* Write the address of the entity given by SYMBOL to SEC. */ |
284 | extern void assemble_addr_to_section (rtx, section *); | |
285 | ||
182fc356 | 286 | /* Return TRUE if and only if the constant pool has no entries. Note |
287 | that even entries we might end up choosing not to emit are counted | |
288 | here, so there is the potential for missed optimizations. */ | |
289 | extern bool constant_pool_empty_p (void); | |
454fcc7a | 290 | |
dc1b3216 | 291 | extern rtx_insn *peephole (rtx_insn *); |
867b95d0 | 292 | |
2dbdc48e | 293 | extern void output_shared_constant_pool (void); |
454fcc7a | 294 | |
f2d0e9f1 | 295 | extern void output_object_blocks (void); |
296 | ||
0e763b2a | 297 | extern void output_quoted_string (FILE *, const char *); |
298 | ||
26b071b0 | 299 | /* When outputting delayed branch sequences, this rtx holds the |
300 | sequence being output. It is null when no delayed branch | |
301 | sequence is being output, so it can be used as a test in the | |
302 | insn output code. | |
303 | ||
304 | This variable is defined in final.c. */ | |
91a55c11 | 305 | extern rtx_sequence *final_sequence; |
26b071b0 | 306 | |
0a893c29 | 307 | /* File in which assembler code is being written. */ |
26b071b0 | 308 | |
0a893c29 | 309 | #ifdef BUFSIZ |
310 | extern FILE *asm_out_file; | |
311 | #endif | |
e772a198 | 312 | |
313 | /* The first global object in the file. */ | |
314 | extern const char *first_global_object_name; | |
315 | ||
316 | /* The first weak object in the file. */ | |
317 | extern const char *weak_global_object_name; | |
318 | ||
308f360f | 319 | /* Nonnull if the insn currently being emitted was a COND_EXEC pattern. */ |
00ea394c | 320 | extern rtx current_insn_predicate; |
308f360f | 321 | |
19f8cf12 | 322 | /* Last insn processed by final_scan_insn. */ |
82f53c1f | 323 | extern rtx_insn *current_output_insn; |
19f8cf12 | 324 | |
a8fb9348 | 325 | /* Nonzero while outputting an `asm' with operands. |
1fa3a8f6 | 326 | This means that inconsistencies are the user's fault, so don't die. |
a8fb9348 | 327 | The precise value is the insn being output, to pass to error_for_asm. */ |
c55d3fa5 | 328 | extern const rtx_insn *this_is_asm_operands; |
a8fb9348 | 329 | |
a49a878f | 330 | /* Carry information from ASM_DECLARE_OBJECT_NAME |
331 | to ASM_FINISH_DECLARE_OBJECT. */ | |
332 | extern int size_directive_output; | |
333 | extern tree last_assemble_variable_decl; | |
334 | ||
1897b881 | 335 | extern bool first_function_block_is_cold; |
336 | ||
f4111c94 | 337 | /* Decide whether DECL needs to be in a writable section. |
338 | RELOC is the same as for SELECT_SECTION. */ | |
a9f1838b | 339 | extern bool decl_readonly_section (const_tree, int); |
95c4b02a | 340 | |
ee4722fe | 341 | /* This can be used to compute RELOC for the function above, when |
342 | given a constant expression. */ | |
343 | extern int compute_reloc_for_constant (tree); | |
344 | ||
95c4b02a | 345 | /* User label prefix in effect for this compilation. */ |
951f0f62 | 346 | extern const char *user_label_prefix; |
1c5153f2 | 347 | |
17d9b0c3 | 348 | /* Default target function prologue and epilogue assembler output. */ |
718e6d56 | 349 | extern void default_function_pro_epilogue (FILE *); |
85ae73e8 | 350 | |
3b3edcd4 | 351 | /* Default target function switched text sections. */ |
352 | extern void default_function_switched_text_sections (FILE *, tree, bool); | |
353 | ||
85ae73e8 | 354 | /* Default target hook that outputs nothing to a stream. */ |
3ad4992f | 355 | extern void no_asm_to_stream (FILE *); |
2cb4ac60 | 356 | |
41a6f238 | 357 | /* Flags controlling properties of a section. */ |
bb2821c0 | 358 | #define SECTION_ENTSIZE 0x000ff /* entity size in section */ |
359 | #define SECTION_CODE 0x00100 /* contains code */ | |
360 | #define SECTION_WRITE 0x00200 /* data is writable */ | |
361 | #define SECTION_DEBUG 0x00400 /* contains debug data */ | |
362 | #define SECTION_LINKONCE 0x00800 /* is linkonce */ | |
363 | #define SECTION_SMALL 0x01000 /* contains "small data" */ | |
364 | #define SECTION_BSS 0x02000 /* contains zeros only */ | |
365 | #define SECTION_FORGET 0x04000 /* forget that we've entered the section */ | |
366 | #define SECTION_MERGE 0x08000 /* contains mergeable data */ | |
367 | #define SECTION_STRINGS 0x10000 /* contains zero terminated strings without | |
368 | embedded zeros */ | |
2ab08d57 | 369 | #define SECTION_OVERRIDE 0x20000 /* allow override of default flags */ |
2a6f0f81 | 370 | #define SECTION_TLS 0x40000 /* contains thread-local storage */ |
73062b44 | 371 | #define SECTION_NOTYPE 0x80000 /* don't output @progbits */ |
2f14b1f9 | 372 | #define SECTION_DECLARED 0x100000 /* section has been used */ |
102e3995 | 373 | #define SECTION_STYLE_MASK 0x600000 /* bits used for SECTION_STYLE */ |
374 | #define SECTION_COMMON 0x800000 /* contains common data */ | |
91da0f1c | 375 | #define SECTION_RELRO 0x1000000 /* data is readonly after relocation processing */ |
0c8f5ee5 | 376 | #define SECTION_EXCLUDE 0x2000000 /* discarded by the linker */ |
377 | #define SECTION_MACH_DEP 0x4000000 /* subsequent bits reserved for target */ | |
102e3995 | 378 | |
379 | /* This SECTION_STYLE is used for unnamed sections that we can switch | |
380 | to using a special assembler directive. */ | |
381 | #define SECTION_UNNAMED 0x000000 | |
382 | ||
383 | /* This SECTION_STYLE is used for named sections that we can switch | |
384 | to using a general section directive. */ | |
385 | #define SECTION_NAMED 0x200000 | |
386 | ||
387 | /* This SECTION_STYLE is used for sections that we cannot switch to at | |
388 | all. The choice of section is implied by the directive that we use | |
389 | to declare the object. */ | |
390 | #define SECTION_NOSWITCH 0x400000 | |
2cb4ac60 | 391 | |
43e4a084 | 392 | /* A helper function for default_elf_select_section and |
393 | default_elf_unique_section. Categorizes the DECL. */ | |
394 | ||
395 | enum section_category | |
396 | { | |
397 | SECCAT_TEXT, | |
398 | ||
399 | SECCAT_RODATA, | |
400 | SECCAT_RODATA_MERGE_STR, | |
401 | SECCAT_RODATA_MERGE_STR_INIT, | |
402 | SECCAT_RODATA_MERGE_CONST, | |
403 | SECCAT_SRODATA, | |
404 | ||
405 | SECCAT_DATA, | |
406 | ||
407 | /* To optimize loading of shared programs, define following subsections | |
408 | of data section: | |
409 | _REL Contains data that has relocations, so they get grouped | |
410 | together and dynamic linker will visit fewer pages in memory. | |
411 | _RO Contains data that is otherwise read-only. This is useful | |
412 | with prelinking as most relocations won't be dynamically | |
413 | linked and thus stay read only. | |
414 | _LOCAL Marks data containing relocations only to local objects. | |
415 | These relocations will get fully resolved by prelinking. */ | |
416 | SECCAT_DATA_REL, | |
417 | SECCAT_DATA_REL_LOCAL, | |
418 | SECCAT_DATA_REL_RO, | |
419 | SECCAT_DATA_REL_RO_LOCAL, | |
420 | ||
421 | SECCAT_SDATA, | |
422 | SECCAT_TDATA, | |
423 | ||
424 | SECCAT_BSS, | |
425 | SECCAT_SBSS, | |
cffbbb9d | 426 | SECCAT_TBSS |
43e4a084 | 427 | }; |
428 | ||
2f14b1f9 | 429 | /* Information that is provided by all instances of the section type. */ |
fb1e4f4a | 430 | struct GTY(()) section_common { |
2f14b1f9 | 431 | /* The set of SECTION_* flags that apply to this section. */ |
432 | unsigned int flags; | |
433 | }; | |
434 | ||
102e3995 | 435 | /* Information about a SECTION_NAMED section. */ |
fb1e4f4a | 436 | struct GTY(()) named_section { |
2f14b1f9 | 437 | struct section_common common; |
438 | ||
439 | /* The name of the section. */ | |
440 | const char *name; | |
441 | ||
442 | /* If nonnull, the VAR_DECL or FUNCTION_DECL with which the | |
443 | section is associated. */ | |
444 | tree decl; | |
445 | }; | |
446 | ||
447 | /* A callback that writes the assembly code for switching to an unnamed | |
448 | section. The argument provides callback-specific data. */ | |
449 | typedef void (*unnamed_section_callback) (const void *); | |
450 | ||
102e3995 | 451 | /* Information about a SECTION_UNNAMED section. */ |
fb1e4f4a | 452 | struct GTY(()) unnamed_section { |
2f14b1f9 | 453 | struct section_common common; |
454 | ||
455 | /* The callback used to switch to the section, and the data that | |
456 | should be passed to the callback. */ | |
457 | unnamed_section_callback GTY ((skip)) callback; | |
458 | const void *GTY ((skip)) data; | |
459 | ||
460 | /* The next entry in the chain of unnamed sections. */ | |
461 | section *next; | |
462 | }; | |
463 | ||
102e3995 | 464 | /* A callback that writes the assembly code for a decl in a |
465 | SECTION_NOSWITCH section. DECL is the decl that should be assembled | |
466 | and NAME is the name of its SYMBOL_REF. SIZE is the size of the decl | |
467 | in bytes and ROUNDED is that size rounded up to the next | |
468 | BIGGEST_ALIGNMENT / BITS_PER_UNIT boundary. | |
469 | ||
470 | Return true if the callback used DECL_ALIGN to set the object's | |
471 | alignment. A false return value implies that we are relying | |
472 | on the rounded size to align the decl. */ | |
473 | typedef bool (*noswitch_section_callback) (tree decl, const char *name, | |
474 | unsigned HOST_WIDE_INT size, | |
475 | unsigned HOST_WIDE_INT rounded); | |
476 | ||
477 | /* Information about a SECTION_NOSWITCH section. */ | |
fb1e4f4a | 478 | struct GTY(()) noswitch_section { |
102e3995 | 479 | struct section_common common; |
480 | ||
481 | /* The callback used to assemble decls in this section. */ | |
482 | noswitch_section_callback GTY ((skip)) callback; | |
483 | }; | |
484 | ||
2f14b1f9 | 485 | /* Information about a section, which may be named or unnamed. */ |
2ef51f0e | 486 | union GTY ((desc ("SECTION_STYLE (&(%h))"), for_user)) section { |
2f14b1f9 | 487 | struct section_common GTY ((skip)) common; |
488 | struct named_section GTY ((tag ("SECTION_NAMED"))) named; | |
102e3995 | 489 | struct unnamed_section GTY ((tag ("SECTION_UNNAMED"))) unnamed; |
490 | struct noswitch_section GTY ((tag ("SECTION_NOSWITCH"))) noswitch; | |
2f14b1f9 | 491 | }; |
492 | ||
102e3995 | 493 | /* Return the style of section SECT. */ |
494 | #define SECTION_STYLE(SECT) ((SECT)->common.flags & SECTION_STYLE_MASK) | |
495 | ||
f2d0e9f1 | 496 | struct object_block; |
497 | ||
2f14b1f9 | 498 | /* Special well-known sections. */ |
499 | extern GTY(()) section *text_section; | |
500 | extern GTY(()) section *data_section; | |
501 | extern GTY(()) section *readonly_data_section; | |
502 | extern GTY(()) section *sdata_section; | |
503 | extern GTY(()) section *ctors_section; | |
504 | extern GTY(()) section *dtors_section; | |
505 | extern GTY(()) section *bss_section; | |
506 | extern GTY(()) section *sbss_section; | |
2f14b1f9 | 507 | extern GTY(()) section *exception_section; |
508 | extern GTY(()) section *eh_frame_section; | |
102e3995 | 509 | extern GTY(()) section *tls_comm_section; |
510 | extern GTY(()) section *comm_section; | |
511 | extern GTY(()) section *lcomm_section; | |
512 | extern GTY(()) section *bss_noswitch_section; | |
2f14b1f9 | 513 | |
514 | extern GTY(()) section *in_section; | |
5fbee89d | 515 | extern GTY(()) bool in_cold_section_p; |
2f14b1f9 | 516 | |
517 | extern section *get_unnamed_section (unsigned int, void (*) (const void *), | |
518 | const void *); | |
519 | extern section *get_section (const char *, unsigned int, tree); | |
520 | extern section *get_named_section (tree, const char *, int); | |
91da0f1c | 521 | extern section *get_variable_section (tree, bool); |
f2d0e9f1 | 522 | extern void place_block_symbol (rtx); |
523 | extern rtx get_section_anchor (struct object_block *, HOST_WIDE_INT, | |
524 | enum tls_model); | |
3754d046 | 525 | extern section *mergeable_constant_section (machine_mode, |
2f14b1f9 | 526 | unsigned HOST_WIDE_INT, |
527 | unsigned int); | |
528 | extern section *function_section (tree); | |
529 | extern section *unlikely_text_section (void); | |
530 | extern section *current_function_section (void); | |
71abcdee | 531 | extern void switch_to_other_text_partition (void); |
2f14b1f9 | 532 | |
6c181a06 | 533 | /* Return the numbered .ctors.N (if CONSTRUCTOR_P) or .dtors.N (if |
534 | not) section for PRIORITY. */ | |
535 | extern section *get_cdtor_priority_section (int, bool); | |
536 | ||
2f14b1f9 | 537 | extern bool unlikely_text_section_p (section *); |
538 | extern void switch_to_section (section *); | |
539 | extern void output_section_asm_op (const void *); | |
43e4a084 | 540 | |
4c0315d0 | 541 | extern void record_tm_clone_pair (tree, tree); |
542 | extern void finish_tm_clone_pairs (void); | |
543 | extern tree get_tm_clone_pair (tree); | |
544 | ||
e2823fde | 545 | extern void default_asm_output_source_filename (FILE *, const char *); |
546 | extern void output_file_directive (FILE *, const char *); | |
547 | ||
00ea394c | 548 | extern unsigned int default_section_type_flags (tree, const char *, int); |
3ad4992f | 549 | |
102e3995 | 550 | extern bool have_global_bss_p (void); |
0f16c0d5 | 551 | extern bool bss_initializer_p (const_tree, bool = false); |
35f71948 | 552 | |
537cd941 | 553 | extern void default_no_named_section (const char *, unsigned int, tree); |
554 | extern void default_elf_asm_named_section (const char *, unsigned int, tree); | |
a9f1838b | 555 | extern enum section_category categorize_decl_for_section (const_tree, int); |
537cd941 | 556 | extern void default_coff_asm_named_section (const char *, unsigned int, tree); |
557 | extern void default_pe_asm_named_section (const char *, unsigned int, tree); | |
3ad4992f | 558 | |
00ea394c | 559 | extern void default_named_section_asm_out_destructor (rtx, int); |
560 | extern void default_dtor_section_asm_out_destructor (rtx, int); | |
00ea394c | 561 | extern void default_named_section_asm_out_constructor (rtx, int); |
562 | extern void default_ctor_section_asm_out_constructor (rtx, int); | |
3ad4992f | 563 | |
4e151b05 | 564 | extern section *default_select_section (tree, int, unsigned HOST_WIDE_INT); |
565 | extern section *default_elf_select_section (tree, int, unsigned HOST_WIDE_INT); | |
3ad4992f | 566 | extern void default_unique_section (tree, int); |
2f14b1f9 | 567 | extern section *default_function_rodata_section (tree); |
568 | extern section *default_no_function_rodata_section (tree); | |
e3ef604c | 569 | extern section *default_clone_table_section (void); |
3754d046 | 570 | extern section *default_select_rtx_section (machine_mode, rtx, |
3ad4992f | 571 | unsigned HOST_WIDE_INT); |
3754d046 | 572 | extern section *default_elf_select_rtx_section (machine_mode, rtx, |
2f14b1f9 | 573 | unsigned HOST_WIDE_INT); |
3ad4992f | 574 | extern void default_encode_section_info (tree, rtx, int); |
575 | extern const char *default_strip_name_encoding (const char *); | |
f2d0e9f1 | 576 | extern void default_asm_output_anchor (rtx); |
a9f1838b | 577 | extern bool default_use_anchors_for_symbol_p (const_rtx); |
578 | extern bool default_binds_local_p (const_tree); | |
579 | extern bool default_binds_local_p_1 (const_tree, int); | |
017e92fb | 580 | extern bool default_binds_local_p_2 (const_tree); |
a4b04269 | 581 | extern bool default_binds_local_p_3 (const_tree, bool, bool, bool, bool); |
3ad4992f | 582 | extern void default_globalize_label (FILE *, const char *); |
9afff52d | 583 | extern void default_globalize_decl_name (FILE *, tree); |
ef1074f7 | 584 | extern void default_emit_unwind_label (FILE *, tree, int, int); |
b215c058 | 585 | extern void default_emit_except_table_label (FILE *); |
cb274b8f | 586 | extern void default_generate_internal_label (char *, const char *, |
587 | unsigned long); | |
3ad4992f | 588 | extern void default_internal_label (FILE *, const char *, unsigned long); |
427eb138 | 589 | extern void default_asm_declare_constant_name (FILE *, const char *, |
590 | const_tree, HOST_WIDE_INT); | |
3ad4992f | 591 | extern void default_file_start (void); |
592 | extern void file_end_indicate_exec_stack (void); | |
48b14f50 | 593 | extern void file_end_indicate_split_stack (void); |
7b4a38a6 | 594 | |
44b23e05 | 595 | extern void default_elf_asm_output_external (FILE *file, tree, |
596 | const char *); | |
c0e76f1f | 597 | extern void default_elf_asm_output_limited_string (FILE *, const char *); |
598 | extern void default_elf_asm_output_ascii (FILE *, const char *, unsigned int); | |
599 | extern void default_elf_internal_label (FILE *, const char *, unsigned long); | |
600 | ||
ef1da805 | 601 | extern void default_elf_init_array_asm_out_constructor (rtx, int); |
602 | extern void default_elf_fini_array_asm_out_destructor (rtx, int); | |
44b23e05 | 603 | extern int maybe_assemble_visibility (tree); |
604 | ||
3754d046 | 605 | extern int default_address_cost (rtx, machine_mode, addr_space_t, bool); |
10f913f2 | 606 | |
990495a7 | 607 | /* Output stack usage information. */ |
608 | extern void output_stack_usage (void); | |
609 | ||
10f913f2 | 610 | #endif /* ! GCC_OUTPUT_H */ |