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416ff32e SB |
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. | |
23a5b65a | 3 | Copyright (C) 1987-2014 Free Software Foundation, Inc. |
0c2768fc | 4 | |
1322177d | 5 | This file is part of GCC. |
0c2768fc | 6 | |
1322177d LB |
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 | |
9dcd6f09 | 9 | Software Foundation; either version 3, or (at your option) any later |
1322177d | 10 | version. |
0c2768fc | 11 | |
1322177d LB |
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. | |
0c2768fc RS |
16 | |
17 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
0c2768fc | 20 | |
e91e4f6c KG |
21 | #ifndef GCC_OUTPUT_H |
22 | #define GCC_OUTPUT_H | |
23 | ||
9b1d8cd6 | 24 | /* Initialize data in final at the beginning of a compilation. */ |
0c20a65f | 25 | extern void init_final (const char *); |
9b1d8cd6 | 26 | |
9b1d8cd6 RK |
27 | /* Enable APP processing of subsequent output. |
28 | Used before the output from an `asm' statement. */ | |
0c20a65f | 29 | extern void app_enable (void); |
9b1d8cd6 RK |
30 | |
31 | /* Disable APP processing of subsequent output. | |
32 | Called from varasm.c before most kinds of output. */ | |
0c20a65f | 33 | extern void app_disable (void); |
9b1d8cd6 | 34 | |
a4f31c00 | 35 | /* Return the number of slots filled in the current |
9b1d8cd6 RK |
36 | delayed branch sequence (we don't count the insn needing the |
37 | delay slot). Zero if not in a delayed branch sequence. */ | |
0c20a65f | 38 | extern int dbr_sequence_length (void); |
9b1d8cd6 RK |
39 | |
40 | /* Indicate that branch shortening hasn't yet been done. */ | |
0c20a65f | 41 | extern void init_insn_lengths (void); |
9b1d8cd6 RK |
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. */ | |
84034c69 | 45 | extern int get_attr_length (rtx_insn *); |
9b1d8cd6 | 46 | |
070a7956 R |
47 | /* Obtain the current length of an insn. If branch shortening has been done, |
48 | get its actual length. Otherwise, get its minimum length. */ | |
84034c69 | 49 | extern int get_attr_min_length (rtx_insn *); |
070a7956 | 50 | |
9b1d8cd6 RK |
51 | /* Make a pass over all insns and compute their actual lengths by shortening |
52 | any branches of variable length if possible. */ | |
49922db8 | 53 | extern void shorten_branches (rtx_insn *); |
9b1d8cd6 | 54 | |
4fbca4ba RS |
55 | const char *get_some_local_dynamic_name (); |
56 | ||
9b1d8cd6 RK |
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'. */ | |
f0cb8ae0 | 62 | extern void final_start_function (rtx_insn *, FILE *, int); |
9b1d8cd6 RK |
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. */ | |
0c20a65f | 67 | extern void final_end_function (void); |
9b1d8cd6 RK |
68 | |
69 | /* Output assembler code for some insns: all or part of a function. */ | |
a943bf7a | 70 | extern void final (rtx_insn *, FILE *, int); |
9b1d8cd6 | 71 | |
5cfc5f84 DJ |
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. */ | |
7fa55ff6 | 75 | extern rtx_insn *final_scan_insn (rtx_insn *, FILE *, int, int, int *); |
5cfc5f84 | 76 | |
9b1d8cd6 RK |
77 | /* Replace a SUBREG with a REG or a MEM, based on the thing it is a |
78 | subreg of. */ | |
55a2c322 | 79 | extern rtx alter_subreg (rtx *, bool); |
9b1d8cd6 | 80 | |
6b3c42ae NF |
81 | /* Print an operand using machine-dependent assembler syntax. */ |
82 | extern void output_operand (rtx, int); | |
83 | ||
9b1d8cd6 RK |
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. */ | |
0c20a65f | 86 | extern void output_operand_lossage (const char *, ...) ATTRIBUTE_PRINTF_1; |
cf1c49cb | 87 | |
0c2768fc RS |
88 | /* Output a string of assembler code, substituting insn operands. |
89 | Defined in final.c. */ | |
0c20a65f | 90 | extern void output_asm_insn (const char *, rtx *); |
0c2768fc | 91 | |
487a6e06 KG |
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. */ | |
8ba24b7b | 95 | extern int insn_current_reference_address (rtx_insn *); |
487a6e06 | 96 | |
3873d24b RH |
97 | /* Find the alignment associated with a CODE_LABEL. |
98 | Defined in final.c. */ | |
0c20a65f | 99 | extern int label_to_alignment (rtx); |
3873d24b | 100 | |
40a8f07a JJ |
101 | /* Find the alignment maximum skip associated with a CODE_LABEL. |
102 | Defined in final.c. */ | |
103 | extern int label_to_max_skip (rtx); | |
104 | ||
9b1d8cd6 | 105 | /* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol. */ |
0c20a65f | 106 | extern void output_asm_label (rtx); |
9b1d8cd6 | 107 | |
a7fe25b8 JJ |
108 | /* Marks SYMBOL_REFs in x as referenced through use of assemble_external. */ |
109 | extern void mark_symbol_refs_as_used (rtx); | |
110 | ||
9b1d8cd6 RK |
111 | /* Print a memory reference operand for address X |
112 | using machine-dependent assembler syntax. */ | |
0c20a65f | 113 | extern void output_address (rtx); |
1428a6b3 | 114 | |
aaff8ce0 CH |
115 | /* Print an integer constant expression in assembler syntax. |
116 | Addition and subtraction are the only arithmetic | |
117 | that may appear in these expressions. */ | |
0c20a65f | 118 | extern void output_addr_const (FILE *, rtx); |
aaff8ce0 | 119 | |
9b1d8cd6 RK |
120 | /* Output a string of assembler code, substituting numbers, strings |
121 | and fixed syntactic prefixes. */ | |
3ae1d4c2 KG |
122 | #if GCC_VERSION >= 3004 |
123 | #define ATTRIBUTE_ASM_FPRINTF(m, n) __attribute__ ((__format__ (__asm_fprintf__, m, n))) ATTRIBUTE_NONNULL(m) | |
3ae1d4c2 KG |
124 | #else |
125 | #define ATTRIBUTE_ASM_FPRINTF(m, n) ATTRIBUTE_NONNULL(m) | |
126 | #endif | |
127 | ||
5e3929ed DA |
128 | extern void fprint_whex (FILE *, unsigned HOST_WIDE_INT); |
129 | extern void fprint_ul (FILE *, unsigned long); | |
130 | extern int sprint_ul (char *, unsigned long); | |
131 | ||
0c20a65f AJ |
132 | extern void asm_fprintf (FILE *file, const char *p, ...) |
133 | ATTRIBUTE_ASM_FPRINTF(2, 3); | |
9b1d8cd6 | 134 | |
9b1d8cd6 | 135 | /* Return nonzero if this function has no function calls. */ |
0c20a65f | 136 | extern int leaf_function_p (void); |
9b1d8cd6 | 137 | |
09da1532 | 138 | /* Return 1 if branch is a forward branch. |
a4f31c00 AJ |
139 | Uses insn_shuid array, so it works only in the final pass. May be used by |
140 | output templates to add branch prediction hints, for example. */ | |
fa7af581 | 141 | extern int final_forward_branch_p (rtx_insn *); |
a4f31c00 | 142 | |
9b1d8cd6 RK |
143 | /* Return 1 if this function uses only the registers that can be |
144 | safely renumbered. */ | |
0c20a65f | 145 | extern int only_leaf_regs_used (void); |
9b1d8cd6 RK |
146 | |
147 | /* Scan IN_RTX and its subexpressions, and renumber all regs into those | |
148 | available in leaf functions. */ | |
0c20a65f | 149 | extern void leaf_renumber_regs_insn (rtx); |
a1493f9f | 150 | |
4bbf910e | 151 | /* Locate the proper template for the given insn-code. */ |
0c20a65f | 152 | extern const char *get_insn_template (int, rtx); |
4bbf910e | 153 | |
ed068cf5 RK |
154 | /* Functions in varasm.c. */ |
155 | ||
50b2596f | 156 | /* Emit any pending weak declarations. */ |
0c20a65f | 157 | extern void weak_finish (void); |
50b2596f | 158 | |
ed068cf5 RK |
159 | /* Decode an `asm' spec for a declaration as a register name. |
160 | Return the register number, or -1 if nothing specified, | |
161 | or -2 if the ASMSPEC is not `cc' or `memory' and is not recognized, | |
162 | or -3 if ASMSPEC is `cc' and is not recognized, | |
163 | or -4 if ASMSPEC is `memory' and is not recognized. | |
164 | Accept an exact spelling or a decimal number. | |
165 | Prefixes such as % are optional. */ | |
0c20a65f | 166 | extern int decode_reg_name (const char *); |
ed068cf5 | 167 | |
0c6d290e RE |
168 | /* Similar to decode_reg_name, but takes an extra parameter that is a |
169 | pointer to the number of (internal) registers described by the | |
170 | external name. */ | |
171 | extern int decode_reg_name_and_count (const char *, int *); | |
172 | ||
07250f0e | 173 | extern void do_assemble_alias (tree, tree); |
d6f4ec51 | 174 | |
0c20a65f | 175 | extern void default_assemble_visibility (tree, int); |
47bd70b5 | 176 | |
ed068cf5 RK |
177 | /* Output a string of literal assembler code |
178 | for an `asm' keyword used between functions. */ | |
0c20a65f | 179 | extern void assemble_asm (tree); |
ed068cf5 | 180 | |
0d4b5b86 BS |
181 | /* Get the function's name from a decl, as described by its RTL. */ |
182 | extern const char *get_fnname_from_decl (tree); | |
183 | ||
ed068cf5 RK |
184 | /* Output assembler code for the constant pool of a function and associated |
185 | with defining the name of the function. DECL describes the function. | |
186 | NAME is the function's name. For the constant pool, we use the current | |
187 | constant pool data. */ | |
0c20a65f | 188 | extern void assemble_start_function (tree, const char *); |
ed068cf5 RK |
189 | |
190 | /* Output assembler code associated with defining the size of the | |
191 | function. DECL describes the function. NAME is the function's name. */ | |
0c20a65f | 192 | extern void assemble_end_function (tree, const char *); |
ed068cf5 | 193 | |
ed068cf5 RK |
194 | /* Assemble everything that is needed for a variable or function declaration. |
195 | Not used for automatic variables, and not used for function definitions. | |
196 | Should not be called for variables of incomplete structure type. | |
197 | ||
198 | TOP_LEVEL is nonzero if this variable has file scope. | |
199 | AT_END is nonzero if this is the special handling, at end of compilation, | |
200 | to define things that have had only tentative definitions. | |
201 | DONT_OUTPUT_DATA if nonzero means don't actually output the | |
202 | initial value (that will be done by the caller). */ | |
0c20a65f | 203 | extern void assemble_variable (tree, int, int, int); |
ed068cf5 | 204 | |
2077db1b CT |
205 | /* Put the vtable verification constructor initialization function |
206 | into the preinit array. */ | |
207 | extern void assemble_vtv_preinit_initializer (tree); | |
208 | ||
0d4b5b86 BS |
209 | /* Assemble everything that is needed for a variable declaration that has |
210 | no definition in the current translation unit. */ | |
211 | extern void assemble_undefined_decl (tree); | |
212 | ||
88d03811 JH |
213 | /* Compute the alignment of variable specified by DECL. |
214 | DONT_OUTPUT_DATA is from assemble_variable. */ | |
215 | extern void align_variable (tree decl, bool dont_output_data); | |
216 | ||
2e226e66 | 217 | /* Queue for outputting something to declare an external symbol to the |
c47c29c8 L |
218 | assembler. (Most assemblers don't need this, so we normally output |
219 | nothing.) Do nothing if DECL is not external. */ | |
0c20a65f | 220 | extern void assemble_external (tree); |
ed068cf5 | 221 | |
d8d79d15 | 222 | /* Assemble code to leave SIZE bytes of zeros. */ |
0c20a65f | 223 | extern void assemble_zeros (unsigned HOST_WIDE_INT); |
d8d79d15 RE |
224 | |
225 | /* Assemble an alignment pseudo op for an ALIGN-bit boundary. */ | |
0c20a65f | 226 | extern void assemble_align (int); |
d8d79d15 RE |
227 | |
228 | /* Assemble a string constant with the specified C string as contents. */ | |
0c20a65f | 229 | extern void assemble_string (const char *, int); |
d8d79d15 | 230 | |
ed068cf5 | 231 | /* Similar, for calling a library function FUN. */ |
0c20a65f | 232 | extern void assemble_external_libcall (rtx); |
9b1d8cd6 | 233 | |
ed068cf5 | 234 | /* Assemble a label named NAME. */ |
e4f7c483 | 235 | extern void assemble_label (FILE *, const char *); |
ed068cf5 | 236 | |
57829bc4 MM |
237 | /* Output to FILE (an assembly file) a reference to NAME. If NAME |
238 | starts with a *, the rest of NAME is output verbatim. Otherwise | |
239 | NAME is transformed in a target-specific way (usually by the | |
240 | addition of an underscore). */ | |
241 | extern void assemble_name_raw (FILE *, const char *); | |
242 | ||
243 | /* Like assemble_name_raw, but should be used when NAME might refer to | |
244 | an entity that is also represented as a tree (like a function or | |
245 | variable). If NAME does refer to such an entity, that entity will | |
246 | be marked as referenced. */ | |
0c20a65f | 247 | extern void assemble_name (FILE *, const char *); |
ed068cf5 | 248 | |
301d03af RS |
249 | /* Return the assembler directive for creating a given kind of integer |
250 | object. SIZE is the number of bytes in the object and ALIGNED_P | |
251 | indicates whether it is known to be aligned. Return NULL if the | |
252 | assembly dialect has no such directive. | |
253 | ||
254 | The returned string should be printed at the start of a new line and | |
255 | be followed immediately by the object's initial value. */ | |
0c20a65f | 256 | extern const char *integer_asm_op (int, int); |
301d03af | 257 | |
301d03af RS |
258 | /* Use directive OP to assemble an integer object X. Print OP at the |
259 | start of the line, followed immediately by the value of X. */ | |
0c20a65f | 260 | extern void assemble_integer_with_op (const char *, rtx); |
301d03af RS |
261 | |
262 | /* The default implementation of the asm_out.integer target hook. */ | |
0c20a65f | 263 | extern bool default_assemble_integer (rtx, unsigned int, int); |
301d03af | 264 | |
c8af3574 RH |
265 | /* Assemble the integer constant X into an object of SIZE bytes. ALIGN is |
266 | the alignment of the integer in bits. Return 1 if we were able to output | |
0e61db61 NS |
267 | the constant, otherwise 0. If FORCE is nonzero the constant must |
268 | be outputable. */ | |
0c20a65f | 269 | extern bool assemble_integer (rtx, unsigned, unsigned, int); |
301d03af | 270 | |
f16d3f39 JH |
271 | /* Return section for TEXT_SECITON_NAME if DECL or DECL_SECTION_NAME (DECL) |
272 | is NULL. */ | |
273 | extern section *get_named_text_section (tree, const char *, const char *); | |
274 | ||
301d03af RS |
275 | /* An interface to assemble_integer for the common case in which a value is |
276 | fully aligned and must be printed. VALUE is the value of the integer | |
277 | object and SIZE is the number of bytes it contains. */ | |
278 | #define assemble_aligned_integer(SIZE, VALUE) \ | |
279 | assemble_integer (VALUE, SIZE, (SIZE) * BITS_PER_UNIT, 1) | |
ed068cf5 | 280 | |
e2500fed | 281 | #ifdef REAL_VALUE_TYPE_SIZE |
ed068cf5 | 282 | /* Assemble the floating-point constant D into an object of size MODE. */ |
ef4bddc2 | 283 | extern void assemble_real (REAL_VALUE_TYPE, machine_mode, unsigned); |
ed068cf5 | 284 | #endif |
ed068cf5 | 285 | |
b2f4bed8 MM |
286 | /* Write the address of the entity given by SYMBOL to SEC. */ |
287 | extern void assemble_addr_to_section (rtx, section *); | |
288 | ||
ed068cf5 | 289 | /* Return the size of the constant pool. */ |
0c20a65f | 290 | extern int get_pool_size (void); |
ed068cf5 | 291 | |
36f0e0a6 | 292 | #ifdef HAVE_peephole |
ced9924c | 293 | extern rtx_insn *peephole (rtx_insn *); |
36f0e0a6 KG |
294 | #endif |
295 | ||
1d3dbd99 | 296 | extern void output_shared_constant_pool (void); |
ed068cf5 | 297 | |
aacd3885 RS |
298 | extern void output_object_blocks (void); |
299 | ||
a803773f JM |
300 | extern void output_quoted_string (FILE *, const char *); |
301 | ||
0c2768fc RS |
302 | /* When outputting delayed branch sequences, this rtx holds the |
303 | sequence being output. It is null when no delayed branch | |
304 | sequence is being output, so it can be used as a test in the | |
305 | insn output code. | |
306 | ||
307 | This variable is defined in final.c. */ | |
b32d5189 | 308 | extern rtx_sequence *final_sequence; |
0c2768fc | 309 | |
f4dc8d96 NB |
310 | /* The line number of the beginning of the current function. Various |
311 | md code needs this so that it can output relative linenumbers. */ | |
312 | ||
313 | #ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers. */ | |
314 | extern int sdb_begin_function_line; | |
315 | #endif | |
316 | ||
49ad7cfa | 317 | /* File in which assembler code is being written. */ |
0c2768fc | 318 | |
49ad7cfa BS |
319 | #ifdef BUFSIZ |
320 | extern FILE *asm_out_file; | |
321 | #endif | |
3b304f5b ZW |
322 | |
323 | /* The first global object in the file. */ | |
324 | extern const char *first_global_object_name; | |
325 | ||
326 | /* The first weak object in the file. */ | |
327 | extern const char *weak_global_object_name; | |
328 | ||
afe48e06 | 329 | /* Nonnull if the insn currently being emitted was a COND_EXEC pattern. */ |
bcda12f4 | 330 | extern rtx current_insn_predicate; |
afe48e06 | 331 | |
b1a9f6a0 | 332 | /* Last insn processed by final_scan_insn. */ |
fa7af581 | 333 | extern rtx_insn *current_output_insn; |
b1a9f6a0 | 334 | |
c8b94768 | 335 | /* Nonzero while outputting an `asm' with operands. |
0e61db61 | 336 | This means that inconsistencies are the user's fault, so don't die. |
c8b94768 | 337 | The precise value is the insn being output, to pass to error_for_asm. */ |
1c22488e | 338 | extern const rtx_insn *this_is_asm_operands; |
c8b94768 | 339 | |
f6db1481 RH |
340 | /* Carry information from ASM_DECLARE_OBJECT_NAME |
341 | to ASM_FINISH_DECLARE_OBJECT. */ | |
342 | extern int size_directive_output; | |
343 | extern tree last_assemble_variable_decl; | |
344 | ||
87c8b4be CT |
345 | extern bool first_function_block_is_cold; |
346 | ||
4e4d733e L |
347 | /* Decide whether DECL needs to be in a writable section. |
348 | RELOC is the same as for SELECT_SECTION. */ | |
3101faab | 349 | extern bool decl_readonly_section (const_tree, int); |
19283265 | 350 | |
b2218cc1 AO |
351 | /* This can be used to compute RELOC for the function above, when |
352 | given a constant expression. */ | |
353 | extern int compute_reloc_for_constant (tree); | |
354 | ||
19283265 | 355 | /* User label prefix in effect for this compilation. */ |
87e11268 | 356 | extern const char *user_label_prefix; |
98577d03 | 357 | |
08c148a8 | 358 | /* Default target function prologue and epilogue assembler output. */ |
0c20a65f | 359 | extern void default_function_pro_epilogue (FILE *, HOST_WIDE_INT); |
b4c25db2 | 360 | |
14d11d40 IS |
361 | /* Default target function switched text sections. */ |
362 | extern void default_function_switched_text_sections (FILE *, tree, bool); | |
363 | ||
b4c25db2 | 364 | /* Default target hook that outputs nothing to a stream. */ |
0c20a65f | 365 | extern void no_asm_to_stream (FILE *); |
7c262518 | 366 | |
d55d8fc7 | 367 | /* Flags controlling properties of a section. */ |
201556f0 JJ |
368 | #define SECTION_ENTSIZE 0x000ff /* entity size in section */ |
369 | #define SECTION_CODE 0x00100 /* contains code */ | |
370 | #define SECTION_WRITE 0x00200 /* data is writable */ | |
371 | #define SECTION_DEBUG 0x00400 /* contains debug data */ | |
372 | #define SECTION_LINKONCE 0x00800 /* is linkonce */ | |
373 | #define SECTION_SMALL 0x01000 /* contains "small data" */ | |
374 | #define SECTION_BSS 0x02000 /* contains zeros only */ | |
375 | #define SECTION_FORGET 0x04000 /* forget that we've entered the section */ | |
376 | #define SECTION_MERGE 0x08000 /* contains mergeable data */ | |
377 | #define SECTION_STRINGS 0x10000 /* contains zero terminated strings without | |
378 | embedded zeros */ | |
10c45943 | 379 | #define SECTION_OVERRIDE 0x20000 /* allow override of default flags */ |
3d78f2e9 | 380 | #define SECTION_TLS 0x40000 /* contains thread-local storage */ |
6a0a6ac4 | 381 | #define SECTION_NOTYPE 0x80000 /* don't output @progbits */ |
d6b5193b | 382 | #define SECTION_DECLARED 0x100000 /* section has been used */ |
434aeebb RS |
383 | #define SECTION_STYLE_MASK 0x600000 /* bits used for SECTION_STYLE */ |
384 | #define SECTION_COMMON 0x800000 /* contains common data */ | |
7fece979 | 385 | #define SECTION_RELRO 0x1000000 /* data is readonly after relocation processing */ |
2dc5ca18 GJL |
386 | #define SECTION_EXCLUDE 0x2000000 /* discarded by the linker */ |
387 | #define SECTION_MACH_DEP 0x4000000 /* subsequent bits reserved for target */ | |
434aeebb RS |
388 | |
389 | /* This SECTION_STYLE is used for unnamed sections that we can switch | |
390 | to using a special assembler directive. */ | |
391 | #define SECTION_UNNAMED 0x000000 | |
392 | ||
393 | /* This SECTION_STYLE is used for named sections that we can switch | |
394 | to using a general section directive. */ | |
395 | #define SECTION_NAMED 0x200000 | |
396 | ||
397 | /* This SECTION_STYLE is used for sections that we cannot switch to at | |
398 | all. The choice of section is implied by the directive that we use | |
399 | to declare the object. */ | |
400 | #define SECTION_NOSWITCH 0x400000 | |
7c262518 | 401 | |
7dcbf659 JH |
402 | /* A helper function for default_elf_select_section and |
403 | default_elf_unique_section. Categorizes the DECL. */ | |
404 | ||
405 | enum section_category | |
406 | { | |
407 | SECCAT_TEXT, | |
408 | ||
409 | SECCAT_RODATA, | |
410 | SECCAT_RODATA_MERGE_STR, | |
411 | SECCAT_RODATA_MERGE_STR_INIT, | |
412 | SECCAT_RODATA_MERGE_CONST, | |
413 | SECCAT_SRODATA, | |
414 | ||
415 | SECCAT_DATA, | |
416 | ||
417 | /* To optimize loading of shared programs, define following subsections | |
418 | of data section: | |
419 | _REL Contains data that has relocations, so they get grouped | |
420 | together and dynamic linker will visit fewer pages in memory. | |
421 | _RO Contains data that is otherwise read-only. This is useful | |
422 | with prelinking as most relocations won't be dynamically | |
423 | linked and thus stay read only. | |
424 | _LOCAL Marks data containing relocations only to local objects. | |
425 | These relocations will get fully resolved by prelinking. */ | |
426 | SECCAT_DATA_REL, | |
427 | SECCAT_DATA_REL_LOCAL, | |
428 | SECCAT_DATA_REL_RO, | |
429 | SECCAT_DATA_REL_RO_LOCAL, | |
430 | ||
431 | SECCAT_SDATA, | |
432 | SECCAT_TDATA, | |
433 | ||
434 | SECCAT_BSS, | |
435 | SECCAT_SBSS, | |
8b84c596 | 436 | SECCAT_TBSS |
7dcbf659 JH |
437 | }; |
438 | ||
d6b5193b | 439 | /* Information that is provided by all instances of the section type. */ |
d1b38208 | 440 | struct GTY(()) section_common { |
d6b5193b RS |
441 | /* The set of SECTION_* flags that apply to this section. */ |
442 | unsigned int flags; | |
443 | }; | |
444 | ||
434aeebb | 445 | /* Information about a SECTION_NAMED section. */ |
d1b38208 | 446 | struct GTY(()) named_section { |
d6b5193b RS |
447 | struct section_common common; |
448 | ||
449 | /* The name of the section. */ | |
450 | const char *name; | |
451 | ||
452 | /* If nonnull, the VAR_DECL or FUNCTION_DECL with which the | |
453 | section is associated. */ | |
454 | tree decl; | |
455 | }; | |
456 | ||
457 | /* A callback that writes the assembly code for switching to an unnamed | |
458 | section. The argument provides callback-specific data. */ | |
459 | typedef void (*unnamed_section_callback) (const void *); | |
460 | ||
434aeebb | 461 | /* Information about a SECTION_UNNAMED section. */ |
d1b38208 | 462 | struct GTY(()) unnamed_section { |
d6b5193b RS |
463 | struct section_common common; |
464 | ||
465 | /* The callback used to switch to the section, and the data that | |
466 | should be passed to the callback. */ | |
467 | unnamed_section_callback GTY ((skip)) callback; | |
468 | const void *GTY ((skip)) data; | |
469 | ||
470 | /* The next entry in the chain of unnamed sections. */ | |
471 | section *next; | |
472 | }; | |
473 | ||
434aeebb RS |
474 | /* A callback that writes the assembly code for a decl in a |
475 | SECTION_NOSWITCH section. DECL is the decl that should be assembled | |
476 | and NAME is the name of its SYMBOL_REF. SIZE is the size of the decl | |
477 | in bytes and ROUNDED is that size rounded up to the next | |
478 | BIGGEST_ALIGNMENT / BITS_PER_UNIT boundary. | |
479 | ||
480 | Return true if the callback used DECL_ALIGN to set the object's | |
481 | alignment. A false return value implies that we are relying | |
482 | on the rounded size to align the decl. */ | |
483 | typedef bool (*noswitch_section_callback) (tree decl, const char *name, | |
484 | unsigned HOST_WIDE_INT size, | |
485 | unsigned HOST_WIDE_INT rounded); | |
486 | ||
487 | /* Information about a SECTION_NOSWITCH section. */ | |
d1b38208 | 488 | struct GTY(()) noswitch_section { |
434aeebb RS |
489 | struct section_common common; |
490 | ||
491 | /* The callback used to assemble decls in this section. */ | |
492 | noswitch_section_callback GTY ((skip)) callback; | |
493 | }; | |
494 | ||
d6b5193b | 495 | /* Information about a section, which may be named or unnamed. */ |
2a22f99c | 496 | union GTY ((desc ("SECTION_STYLE (&(%h))"), for_user)) section { |
d6b5193b RS |
497 | struct section_common GTY ((skip)) common; |
498 | struct named_section GTY ((tag ("SECTION_NAMED"))) named; | |
434aeebb RS |
499 | struct unnamed_section GTY ((tag ("SECTION_UNNAMED"))) unnamed; |
500 | struct noswitch_section GTY ((tag ("SECTION_NOSWITCH"))) noswitch; | |
d6b5193b RS |
501 | }; |
502 | ||
434aeebb RS |
503 | /* Return the style of section SECT. */ |
504 | #define SECTION_STYLE(SECT) ((SECT)->common.flags & SECTION_STYLE_MASK) | |
505 | ||
aacd3885 RS |
506 | struct object_block; |
507 | ||
d6b5193b RS |
508 | /* Special well-known sections. */ |
509 | extern GTY(()) section *text_section; | |
510 | extern GTY(()) section *data_section; | |
511 | extern GTY(()) section *readonly_data_section; | |
512 | extern GTY(()) section *sdata_section; | |
513 | extern GTY(()) section *ctors_section; | |
514 | extern GTY(()) section *dtors_section; | |
515 | extern GTY(()) section *bss_section; | |
516 | extern GTY(()) section *sbss_section; | |
d6b5193b RS |
517 | extern GTY(()) section *exception_section; |
518 | extern GTY(()) section *eh_frame_section; | |
434aeebb RS |
519 | extern GTY(()) section *tls_comm_section; |
520 | extern GTY(()) section *comm_section; | |
521 | extern GTY(()) section *lcomm_section; | |
522 | extern GTY(()) section *bss_noswitch_section; | |
d6b5193b RS |
523 | |
524 | extern GTY(()) section *in_section; | |
c543ca49 | 525 | extern GTY(()) bool in_cold_section_p; |
d6b5193b RS |
526 | |
527 | extern section *get_unnamed_section (unsigned int, void (*) (const void *), | |
528 | const void *); | |
529 | extern section *get_section (const char *, unsigned int, tree); | |
530 | extern section *get_named_section (tree, const char *, int); | |
7fece979 | 531 | extern section *get_variable_section (tree, bool); |
aacd3885 RS |
532 | extern void place_block_symbol (rtx); |
533 | extern rtx get_section_anchor (struct object_block *, HOST_WIDE_INT, | |
534 | enum tls_model); | |
ef4bddc2 | 535 | extern section *mergeable_constant_section (machine_mode, |
d6b5193b RS |
536 | unsigned HOST_WIDE_INT, |
537 | unsigned int); | |
538 | extern section *function_section (tree); | |
539 | extern section *unlikely_text_section (void); | |
540 | extern section *current_function_section (void); | |
541 | ||
b2f4bed8 MM |
542 | /* Return the numbered .ctors.N (if CONSTRUCTOR_P) or .dtors.N (if |
543 | not) section for PRIORITY. */ | |
544 | extern section *get_cdtor_priority_section (int, bool); | |
545 | ||
d6b5193b RS |
546 | extern bool unlikely_text_section_p (section *); |
547 | extern void switch_to_section (section *); | |
548 | extern void output_section_asm_op (const void *); | |
7dcbf659 | 549 | |
0a35513e AH |
550 | extern void record_tm_clone_pair (tree, tree); |
551 | extern void finish_tm_clone_pairs (void); | |
552 | extern tree get_tm_clone_pair (tree); | |
553 | ||
b5f5d41d AS |
554 | extern void default_asm_output_source_filename (FILE *, const char *); |
555 | extern void output_file_directive (FILE *, const char *); | |
556 | ||
bcda12f4 | 557 | extern unsigned int default_section_type_flags (tree, const char *, int); |
0c20a65f | 558 | |
434aeebb | 559 | extern bool have_global_bss_p (void); |
2d7b0500 DE |
560 | extern bool bss_initializer_p (const_tree); |
561 | ||
c18a5b6c MM |
562 | extern void default_no_named_section (const char *, unsigned int, tree); |
563 | extern void default_elf_asm_named_section (const char *, unsigned int, tree); | |
3101faab | 564 | extern enum section_category categorize_decl_for_section (const_tree, int); |
c18a5b6c MM |
565 | extern void default_coff_asm_named_section (const char *, unsigned int, tree); |
566 | extern void default_pe_asm_named_section (const char *, unsigned int, tree); | |
0c20a65f | 567 | |
bcda12f4 SB |
568 | extern void default_named_section_asm_out_destructor (rtx, int); |
569 | extern void default_dtor_section_asm_out_destructor (rtx, int); | |
bcda12f4 SB |
570 | extern void default_named_section_asm_out_constructor (rtx, int); |
571 | extern void default_ctor_section_asm_out_constructor (rtx, int); | |
0c20a65f | 572 | |
9b580a0b RH |
573 | extern section *default_select_section (tree, int, unsigned HOST_WIDE_INT); |
574 | extern section *default_elf_select_section (tree, int, unsigned HOST_WIDE_INT); | |
0c20a65f | 575 | extern void default_unique_section (tree, int); |
d6b5193b RS |
576 | extern section *default_function_rodata_section (tree); |
577 | extern section *default_no_function_rodata_section (tree); | |
50b0b78a | 578 | extern section *default_clone_table_section (void); |
ef4bddc2 | 579 | extern section *default_select_rtx_section (machine_mode, rtx, |
0c20a65f | 580 | unsigned HOST_WIDE_INT); |
ef4bddc2 | 581 | extern section *default_elf_select_rtx_section (machine_mode, rtx, |
d6b5193b | 582 | unsigned HOST_WIDE_INT); |
0c20a65f AJ |
583 | extern void default_encode_section_info (tree, rtx, int); |
584 | extern const char *default_strip_name_encoding (const char *); | |
aacd3885 | 585 | extern void default_asm_output_anchor (rtx); |
3101faab KG |
586 | extern bool default_use_anchors_for_symbol_p (const_rtx); |
587 | extern bool default_binds_local_p (const_tree); | |
588 | extern bool default_binds_local_p_1 (const_tree, int); | |
0c20a65f | 589 | extern void default_globalize_label (FILE *, const char *); |
812b587e | 590 | extern void default_globalize_decl_name (FILE *, tree); |
eeab4d81 | 591 | extern void default_emit_unwind_label (FILE *, tree, int, int); |
083cad55 | 592 | extern void default_emit_except_table_label (FILE *); |
4ee3b013 JR |
593 | extern void default_generate_internal_label (char *, const char *, |
594 | unsigned long); | |
0c20a65f | 595 | extern void default_internal_label (FILE *, const char *, unsigned long); |
e4f7c483 AS |
596 | extern void default_asm_declare_constant_name (FILE *, const char *, |
597 | const_tree, HOST_WIDE_INT); | |
0c20a65f AJ |
598 | extern void default_file_start (void); |
599 | extern void file_end_indicate_exec_stack (void); | |
7458026b | 600 | extern void file_end_indicate_split_stack (void); |
772c5265 | 601 | |
c47c29c8 L |
602 | extern void default_elf_asm_output_external (FILE *file, tree, |
603 | const char *); | |
5e3929ed DA |
604 | extern void default_elf_asm_output_limited_string (FILE *, const char *); |
605 | extern void default_elf_asm_output_ascii (FILE *, const char *, unsigned int); | |
606 | extern void default_elf_internal_label (FILE *, const char *, unsigned long); | |
607 | ||
9ce7ad7f L |
608 | extern void default_elf_init_array_asm_out_constructor (rtx, int); |
609 | extern void default_elf_fini_array_asm_out_destructor (rtx, int); | |
c47c29c8 L |
610 | extern int maybe_assemble_visibility (tree); |
611 | ||
ef4bddc2 | 612 | extern int default_address_cost (rtx, machine_mode, addr_space_t, bool); |
e91e4f6c | 613 | |
d3c12306 EB |
614 | /* Output stack usage information. */ |
615 | extern void output_stack_usage (void); | |
616 | ||
e91e4f6c | 617 | #endif /* ! GCC_OUTPUT_H */ |