]>
Commit | Line | Data |
---|---|---|
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. | |
d1e082c2 | 3 | Copyright (C) 1987-2013 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. */ | |
0c20a65f | 45 | extern int get_attr_length (rtx); |
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. */ | |
49 | extern int get_attr_min_length (rtx); | |
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. */ | |
0c20a65f | 53 | extern void shorten_branches (rtx); |
9b1d8cd6 RK |
54 | |
55 | /* Output assembler code for the start of a function, | |
56 | and initialize some of the variables in this file | |
57 | for the new function. The label for the function and associated | |
58 | assembler pseudo-ops have already been output in | |
59 | `assemble_start_function'. */ | |
0c20a65f | 60 | extern void final_start_function (rtx, FILE *, int); |
9b1d8cd6 RK |
61 | |
62 | /* Output assembler code for the end of a function. | |
63 | For clarity, args are same as those of `final_start_function' | |
64 | even though not all of them are needed. */ | |
0c20a65f | 65 | extern void final_end_function (void); |
9b1d8cd6 RK |
66 | |
67 | /* Output assembler code for some insns: all or part of a function. */ | |
c9d691e9 | 68 | extern void final (rtx, FILE *, int); |
9b1d8cd6 | 69 | |
5cfc5f84 DJ |
70 | /* The final scan for one insn, INSN. Args are same as in `final', except |
71 | that INSN is the insn being scanned. Value returned is the next insn to | |
72 | be scanned. */ | |
c9d691e9 | 73 | extern rtx final_scan_insn (rtx, FILE *, int, int, int *); |
5cfc5f84 | 74 | |
9b1d8cd6 RK |
75 | /* Replace a SUBREG with a REG or a MEM, based on the thing it is a |
76 | subreg of. */ | |
55a2c322 | 77 | extern rtx alter_subreg (rtx *, bool); |
9b1d8cd6 | 78 | |
6b3c42ae NF |
79 | /* Print an operand using machine-dependent assembler syntax. */ |
80 | extern void output_operand (rtx, int); | |
81 | ||
9b1d8cd6 RK |
82 | /* Report inconsistency between the assembler template and the operands. |
83 | In an `asm', it's the user's fault; otherwise, the compiler's fault. */ | |
0c20a65f | 84 | extern void output_operand_lossage (const char *, ...) ATTRIBUTE_PRINTF_1; |
cf1c49cb | 85 | |
0c2768fc RS |
86 | /* Output a string of assembler code, substituting insn operands. |
87 | Defined in final.c. */ | |
0c20a65f | 88 | extern void output_asm_insn (const char *, rtx *); |
0c2768fc | 89 | |
487a6e06 KG |
90 | /* Compute a worst-case reference address of a branch so that it |
91 | can be safely used in the presence of aligned labels. | |
92 | Defined in final.c. */ | |
0c20a65f | 93 | extern int insn_current_reference_address (rtx); |
487a6e06 | 94 | |
3873d24b RH |
95 | /* Find the alignment associated with a CODE_LABEL. |
96 | Defined in final.c. */ | |
0c20a65f | 97 | extern int label_to_alignment (rtx); |
3873d24b | 98 | |
40a8f07a JJ |
99 | /* Find the alignment maximum skip associated with a CODE_LABEL. |
100 | Defined in final.c. */ | |
101 | extern int label_to_max_skip (rtx); | |
102 | ||
9b1d8cd6 | 103 | /* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol. */ |
0c20a65f | 104 | extern void output_asm_label (rtx); |
9b1d8cd6 | 105 | |
a7fe25b8 JJ |
106 | /* Marks SYMBOL_REFs in x as referenced through use of assemble_external. */ |
107 | extern void mark_symbol_refs_as_used (rtx); | |
108 | ||
9b1d8cd6 RK |
109 | /* Print a memory reference operand for address X |
110 | using machine-dependent assembler syntax. */ | |
0c20a65f | 111 | extern void output_address (rtx); |
1428a6b3 | 112 | |
aaff8ce0 CH |
113 | /* Print an integer constant expression in assembler syntax. |
114 | Addition and subtraction are the only arithmetic | |
115 | that may appear in these expressions. */ | |
0c20a65f | 116 | extern void output_addr_const (FILE *, rtx); |
aaff8ce0 | 117 | |
9b1d8cd6 RK |
118 | /* Output a string of assembler code, substituting numbers, strings |
119 | and fixed syntactic prefixes. */ | |
3ae1d4c2 KG |
120 | #if GCC_VERSION >= 3004 |
121 | #define ATTRIBUTE_ASM_FPRINTF(m, n) __attribute__ ((__format__ (__asm_fprintf__, m, n))) ATTRIBUTE_NONNULL(m) | |
3ae1d4c2 KG |
122 | #else |
123 | #define ATTRIBUTE_ASM_FPRINTF(m, n) ATTRIBUTE_NONNULL(m) | |
124 | #endif | |
125 | ||
5e3929ed DA |
126 | extern void fprint_whex (FILE *, unsigned HOST_WIDE_INT); |
127 | extern void fprint_ul (FILE *, unsigned long); | |
128 | extern int sprint_ul (char *, unsigned long); | |
129 | ||
0c20a65f AJ |
130 | extern void asm_fprintf (FILE *file, const char *p, ...) |
131 | ATTRIBUTE_ASM_FPRINTF(2, 3); | |
9b1d8cd6 | 132 | |
9b1d8cd6 | 133 | /* Return nonzero if this function has no function calls. */ |
0c20a65f | 134 | extern int leaf_function_p (void); |
9b1d8cd6 | 135 | |
09da1532 | 136 | /* Return 1 if branch is a forward branch. |
a4f31c00 AJ |
137 | Uses insn_shuid array, so it works only in the final pass. May be used by |
138 | output templates to add branch prediction hints, for example. */ | |
0c20a65f | 139 | extern int final_forward_branch_p (rtx); |
a4f31c00 | 140 | |
9b1d8cd6 RK |
141 | /* Return 1 if this function uses only the registers that can be |
142 | safely renumbered. */ | |
0c20a65f | 143 | extern int only_leaf_regs_used (void); |
9b1d8cd6 RK |
144 | |
145 | /* Scan IN_RTX and its subexpressions, and renumber all regs into those | |
146 | available in leaf functions. */ | |
0c20a65f | 147 | extern void leaf_renumber_regs_insn (rtx); |
a1493f9f | 148 | |
4bbf910e | 149 | /* Locate the proper template for the given insn-code. */ |
0c20a65f | 150 | extern const char *get_insn_template (int, rtx); |
4bbf910e | 151 | |
ed068cf5 RK |
152 | /* Functions in varasm.c. */ |
153 | ||
50b2596f | 154 | /* Emit any pending weak declarations. */ |
0c20a65f | 155 | extern void weak_finish (void); |
50b2596f | 156 | |
ed068cf5 RK |
157 | /* Decode an `asm' spec for a declaration as a register name. |
158 | Return the register number, or -1 if nothing specified, | |
159 | or -2 if the ASMSPEC is not `cc' or `memory' and is not recognized, | |
160 | or -3 if ASMSPEC is `cc' and is not recognized, | |
161 | or -4 if ASMSPEC is `memory' and is not recognized. | |
162 | Accept an exact spelling or a decimal number. | |
163 | Prefixes such as % are optional. */ | |
0c20a65f | 164 | extern int decode_reg_name (const char *); |
ed068cf5 | 165 | |
0c6d290e RE |
166 | /* Similar to decode_reg_name, but takes an extra parameter that is a |
167 | pointer to the number of (internal) registers described by the | |
168 | external name. */ | |
169 | extern int decode_reg_name_and_count (const char *, int *); | |
170 | ||
07250f0e | 171 | extern void do_assemble_alias (tree, tree); |
d6f4ec51 | 172 | |
0c20a65f | 173 | extern void default_assemble_visibility (tree, int); |
47bd70b5 | 174 | |
ed068cf5 RK |
175 | /* Output a string of literal assembler code |
176 | for an `asm' keyword used between functions. */ | |
0c20a65f | 177 | extern void assemble_asm (tree); |
ed068cf5 | 178 | |
ed068cf5 RK |
179 | /* Output assembler code for the constant pool of a function and associated |
180 | with defining the name of the function. DECL describes the function. | |
181 | NAME is the function's name. For the constant pool, we use the current | |
182 | constant pool data. */ | |
0c20a65f | 183 | extern void assemble_start_function (tree, const char *); |
ed068cf5 RK |
184 | |
185 | /* Output assembler code associated with defining the size of the | |
186 | function. DECL describes the function. NAME is the function's name. */ | |
0c20a65f | 187 | extern void assemble_end_function (tree, const char *); |
ed068cf5 | 188 | |
ed068cf5 RK |
189 | /* Assemble everything that is needed for a variable or function declaration. |
190 | Not used for automatic variables, and not used for function definitions. | |
191 | Should not be called for variables of incomplete structure type. | |
192 | ||
193 | TOP_LEVEL is nonzero if this variable has file scope. | |
194 | AT_END is nonzero if this is the special handling, at end of compilation, | |
195 | to define things that have had only tentative definitions. | |
196 | DONT_OUTPUT_DATA if nonzero means don't actually output the | |
197 | initial value (that will be done by the caller). */ | |
0c20a65f | 198 | extern void assemble_variable (tree, int, int, int); |
ed068cf5 | 199 | |
88d03811 JH |
200 | /* Compute the alignment of variable specified by DECL. |
201 | DONT_OUTPUT_DATA is from assemble_variable. */ | |
202 | extern void align_variable (tree decl, bool dont_output_data); | |
203 | ||
2e226e66 | 204 | /* Queue for outputting something to declare an external symbol to the |
c47c29c8 L |
205 | assembler. (Most assemblers don't need this, so we normally output |
206 | nothing.) Do nothing if DECL is not external. */ | |
0c20a65f | 207 | extern void assemble_external (tree); |
ed068cf5 | 208 | |
d8d79d15 | 209 | /* Assemble code to leave SIZE bytes of zeros. */ |
0c20a65f | 210 | extern void assemble_zeros (unsigned HOST_WIDE_INT); |
d8d79d15 RE |
211 | |
212 | /* Assemble an alignment pseudo op for an ALIGN-bit boundary. */ | |
0c20a65f | 213 | extern void assemble_align (int); |
d8d79d15 RE |
214 | |
215 | /* Assemble a string constant with the specified C string as contents. */ | |
0c20a65f | 216 | extern void assemble_string (const char *, int); |
d8d79d15 | 217 | |
ed068cf5 | 218 | /* Similar, for calling a library function FUN. */ |
0c20a65f | 219 | extern void assemble_external_libcall (rtx); |
9b1d8cd6 | 220 | |
ed068cf5 | 221 | /* Assemble a label named NAME. */ |
e4f7c483 | 222 | extern void assemble_label (FILE *, const char *); |
ed068cf5 | 223 | |
57829bc4 MM |
224 | /* Output to FILE (an assembly file) a reference to NAME. If NAME |
225 | starts with a *, the rest of NAME is output verbatim. Otherwise | |
226 | NAME is transformed in a target-specific way (usually by the | |
227 | addition of an underscore). */ | |
228 | extern void assemble_name_raw (FILE *, const char *); | |
229 | ||
230 | /* Like assemble_name_raw, but should be used when NAME might refer to | |
231 | an entity that is also represented as a tree (like a function or | |
232 | variable). If NAME does refer to such an entity, that entity will | |
233 | be marked as referenced. */ | |
0c20a65f | 234 | extern void assemble_name (FILE *, const char *); |
ed068cf5 | 235 | |
301d03af RS |
236 | /* Return the assembler directive for creating a given kind of integer |
237 | object. SIZE is the number of bytes in the object and ALIGNED_P | |
238 | indicates whether it is known to be aligned. Return NULL if the | |
239 | assembly dialect has no such directive. | |
240 | ||
241 | The returned string should be printed at the start of a new line and | |
242 | be followed immediately by the object's initial value. */ | |
0c20a65f | 243 | extern const char *integer_asm_op (int, int); |
301d03af | 244 | |
301d03af RS |
245 | /* Use directive OP to assemble an integer object X. Print OP at the |
246 | start of the line, followed immediately by the value of X. */ | |
0c20a65f | 247 | extern void assemble_integer_with_op (const char *, rtx); |
301d03af RS |
248 | |
249 | /* The default implementation of the asm_out.integer target hook. */ | |
0c20a65f | 250 | extern bool default_assemble_integer (rtx, unsigned int, int); |
301d03af | 251 | |
c8af3574 RH |
252 | /* Assemble the integer constant X into an object of SIZE bytes. ALIGN is |
253 | the alignment of the integer in bits. Return 1 if we were able to output | |
0e61db61 NS |
254 | the constant, otherwise 0. If FORCE is nonzero the constant must |
255 | be outputable. */ | |
0c20a65f | 256 | extern bool assemble_integer (rtx, unsigned, unsigned, int); |
301d03af | 257 | |
f16d3f39 JH |
258 | /* Return section for TEXT_SECITON_NAME if DECL or DECL_SECTION_NAME (DECL) |
259 | is NULL. */ | |
260 | extern section *get_named_text_section (tree, const char *, const char *); | |
261 | ||
301d03af RS |
262 | /* An interface to assemble_integer for the common case in which a value is |
263 | fully aligned and must be printed. VALUE is the value of the integer | |
264 | object and SIZE is the number of bytes it contains. */ | |
265 | #define assemble_aligned_integer(SIZE, VALUE) \ | |
266 | assemble_integer (VALUE, SIZE, (SIZE) * BITS_PER_UNIT, 1) | |
ed068cf5 | 267 | |
e2500fed | 268 | #ifdef REAL_VALUE_TYPE_SIZE |
ed068cf5 | 269 | /* Assemble the floating-point constant D into an object of size MODE. */ |
0c20a65f | 270 | extern void assemble_real (REAL_VALUE_TYPE, enum machine_mode, unsigned); |
ed068cf5 | 271 | #endif |
ed068cf5 | 272 | |
b2f4bed8 MM |
273 | /* Write the address of the entity given by SYMBOL to SEC. */ |
274 | extern void assemble_addr_to_section (rtx, section *); | |
275 | ||
ed068cf5 | 276 | /* Return the size of the constant pool. */ |
0c20a65f | 277 | extern int get_pool_size (void); |
ed068cf5 | 278 | |
36f0e0a6 | 279 | #ifdef HAVE_peephole |
0c20a65f | 280 | extern rtx peephole (rtx); |
36f0e0a6 KG |
281 | #endif |
282 | ||
1d3dbd99 | 283 | extern void output_shared_constant_pool (void); |
ed068cf5 | 284 | |
aacd3885 RS |
285 | extern void output_object_blocks (void); |
286 | ||
a803773f JM |
287 | extern void output_quoted_string (FILE *, const char *); |
288 | ||
ed068cf5 RK |
289 | /* Output assembler code for constant EXP to FILE, with no label. |
290 | This includes the pseudo-op such as ".int" or ".byte", and a newline. | |
291 | Assumes output_addressed_constants has been done on EXP already. | |
292 | ||
293 | Generate exactly SIZE bytes of assembler data, padding at the end | |
c8af3574 RH |
294 | with zeros if necessary. SIZE must always be specified. |
295 | ||
296 | ALIGN is the alignment in bits that may be assumed for the data. */ | |
0c20a65f | 297 | extern void output_constant (tree, unsigned HOST_WIDE_INT, unsigned int); |
aaff8ce0 | 298 | |
0c2768fc RS |
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. */ | |
305 | extern rtx final_sequence; | |
306 | ||
f4dc8d96 NB |
307 | /* The line number of the beginning of the current function. Various |
308 | md code needs this so that it can output relative linenumbers. */ | |
309 | ||
310 | #ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers. */ | |
311 | extern int sdb_begin_function_line; | |
312 | #endif | |
313 | ||
49ad7cfa | 314 | /* File in which assembler code is being written. */ |
0c2768fc | 315 | |
49ad7cfa BS |
316 | #ifdef BUFSIZ |
317 | extern FILE *asm_out_file; | |
318 | #endif | |
3b304f5b ZW |
319 | |
320 | /* The first global object in the file. */ | |
321 | extern const char *first_global_object_name; | |
322 | ||
323 | /* The first weak object in the file. */ | |
324 | extern const char *weak_global_object_name; | |
325 | ||
afe48e06 | 326 | /* Nonnull if the insn currently being emitted was a COND_EXEC pattern. */ |
bcda12f4 | 327 | extern rtx current_insn_predicate; |
afe48e06 | 328 | |
b1a9f6a0 | 329 | /* Last insn processed by final_scan_insn. */ |
bcda12f4 | 330 | extern rtx current_output_insn; |
b1a9f6a0 | 331 | |
c8b94768 | 332 | /* Nonzero while outputting an `asm' with operands. |
0e61db61 | 333 | This means that inconsistencies are the user's fault, so don't die. |
c8b94768 RH |
334 | The precise value is the insn being output, to pass to error_for_asm. */ |
335 | extern rtx this_is_asm_operands; | |
336 | ||
f6db1481 RH |
337 | /* Carry information from ASM_DECLARE_OBJECT_NAME |
338 | to ASM_FINISH_DECLARE_OBJECT. */ | |
339 | extern int size_directive_output; | |
340 | extern tree last_assemble_variable_decl; | |
341 | ||
87c8b4be CT |
342 | extern bool first_function_block_is_cold; |
343 | ||
4e4d733e L |
344 | /* Decide whether DECL needs to be in a writable section. |
345 | RELOC is the same as for SELECT_SECTION. */ | |
3101faab | 346 | extern bool decl_readonly_section (const_tree, int); |
19283265 | 347 | |
b2218cc1 AO |
348 | /* This can be used to compute RELOC for the function above, when |
349 | given a constant expression. */ | |
350 | extern int compute_reloc_for_constant (tree); | |
351 | ||
19283265 | 352 | /* User label prefix in effect for this compilation. */ |
87e11268 | 353 | extern const char *user_label_prefix; |
98577d03 | 354 | |
08c148a8 | 355 | /* Default target function prologue and epilogue assembler output. */ |
0c20a65f | 356 | extern void default_function_pro_epilogue (FILE *, HOST_WIDE_INT); |
b4c25db2 | 357 | |
14d11d40 IS |
358 | /* Default target function switched text sections. */ |
359 | extern void default_function_switched_text_sections (FILE *, tree, bool); | |
360 | ||
b4c25db2 | 361 | /* Default target hook that outputs nothing to a stream. */ |
0c20a65f | 362 | extern void no_asm_to_stream (FILE *); |
7c262518 | 363 | |
d55d8fc7 | 364 | /* Flags controlling properties of a section. */ |
201556f0 JJ |
365 | #define SECTION_ENTSIZE 0x000ff /* entity size in section */ |
366 | #define SECTION_CODE 0x00100 /* contains code */ | |
367 | #define SECTION_WRITE 0x00200 /* data is writable */ | |
368 | #define SECTION_DEBUG 0x00400 /* contains debug data */ | |
369 | #define SECTION_LINKONCE 0x00800 /* is linkonce */ | |
370 | #define SECTION_SMALL 0x01000 /* contains "small data" */ | |
371 | #define SECTION_BSS 0x02000 /* contains zeros only */ | |
372 | #define SECTION_FORGET 0x04000 /* forget that we've entered the section */ | |
373 | #define SECTION_MERGE 0x08000 /* contains mergeable data */ | |
374 | #define SECTION_STRINGS 0x10000 /* contains zero terminated strings without | |
375 | embedded zeros */ | |
10c45943 | 376 | #define SECTION_OVERRIDE 0x20000 /* allow override of default flags */ |
3d78f2e9 | 377 | #define SECTION_TLS 0x40000 /* contains thread-local storage */ |
6a0a6ac4 | 378 | #define SECTION_NOTYPE 0x80000 /* don't output @progbits */ |
d6b5193b | 379 | #define SECTION_DECLARED 0x100000 /* section has been used */ |
434aeebb RS |
380 | #define SECTION_STYLE_MASK 0x600000 /* bits used for SECTION_STYLE */ |
381 | #define SECTION_COMMON 0x800000 /* contains common data */ | |
7fece979 | 382 | #define SECTION_RELRO 0x1000000 /* data is readonly after relocation processing */ |
2dc5ca18 GJL |
383 | #define SECTION_EXCLUDE 0x2000000 /* discarded by the linker */ |
384 | #define SECTION_MACH_DEP 0x4000000 /* subsequent bits reserved for target */ | |
434aeebb RS |
385 | |
386 | /* This SECTION_STYLE is used for unnamed sections that we can switch | |
387 | to using a special assembler directive. */ | |
388 | #define SECTION_UNNAMED 0x000000 | |
389 | ||
390 | /* This SECTION_STYLE is used for named sections that we can switch | |
391 | to using a general section directive. */ | |
392 | #define SECTION_NAMED 0x200000 | |
393 | ||
394 | /* This SECTION_STYLE is used for sections that we cannot switch to at | |
395 | all. The choice of section is implied by the directive that we use | |
396 | to declare the object. */ | |
397 | #define SECTION_NOSWITCH 0x400000 | |
7c262518 | 398 | |
7dcbf659 JH |
399 | /* A helper function for default_elf_select_section and |
400 | default_elf_unique_section. Categorizes the DECL. */ | |
401 | ||
402 | enum section_category | |
403 | { | |
404 | SECCAT_TEXT, | |
405 | ||
406 | SECCAT_RODATA, | |
407 | SECCAT_RODATA_MERGE_STR, | |
408 | SECCAT_RODATA_MERGE_STR_INIT, | |
409 | SECCAT_RODATA_MERGE_CONST, | |
410 | SECCAT_SRODATA, | |
411 | ||
412 | SECCAT_DATA, | |
413 | ||
414 | /* To optimize loading of shared programs, define following subsections | |
415 | of data section: | |
416 | _REL Contains data that has relocations, so they get grouped | |
417 | together and dynamic linker will visit fewer pages in memory. | |
418 | _RO Contains data that is otherwise read-only. This is useful | |
419 | with prelinking as most relocations won't be dynamically | |
420 | linked and thus stay read only. | |
421 | _LOCAL Marks data containing relocations only to local objects. | |
422 | These relocations will get fully resolved by prelinking. */ | |
423 | SECCAT_DATA_REL, | |
424 | SECCAT_DATA_REL_LOCAL, | |
425 | SECCAT_DATA_REL_RO, | |
426 | SECCAT_DATA_REL_RO_LOCAL, | |
427 | ||
428 | SECCAT_SDATA, | |
429 | SECCAT_TDATA, | |
430 | ||
431 | SECCAT_BSS, | |
432 | SECCAT_SBSS, | |
8b84c596 | 433 | SECCAT_TBSS |
7dcbf659 JH |
434 | }; |
435 | ||
d6b5193b | 436 | /* Information that is provided by all instances of the section type. */ |
d1b38208 | 437 | struct GTY(()) section_common { |
d6b5193b RS |
438 | /* The set of SECTION_* flags that apply to this section. */ |
439 | unsigned int flags; | |
440 | }; | |
441 | ||
434aeebb | 442 | /* Information about a SECTION_NAMED section. */ |
d1b38208 | 443 | struct GTY(()) named_section { |
d6b5193b RS |
444 | struct section_common common; |
445 | ||
446 | /* The name of the section. */ | |
447 | const char *name; | |
448 | ||
449 | /* If nonnull, the VAR_DECL or FUNCTION_DECL with which the | |
450 | section is associated. */ | |
451 | tree decl; | |
452 | }; | |
453 | ||
454 | /* A callback that writes the assembly code for switching to an unnamed | |
455 | section. The argument provides callback-specific data. */ | |
456 | typedef void (*unnamed_section_callback) (const void *); | |
457 | ||
434aeebb | 458 | /* Information about a SECTION_UNNAMED section. */ |
d1b38208 | 459 | struct GTY(()) unnamed_section { |
d6b5193b RS |
460 | struct section_common common; |
461 | ||
462 | /* The callback used to switch to the section, and the data that | |
463 | should be passed to the callback. */ | |
464 | unnamed_section_callback GTY ((skip)) callback; | |
465 | const void *GTY ((skip)) data; | |
466 | ||
467 | /* The next entry in the chain of unnamed sections. */ | |
468 | section *next; | |
469 | }; | |
470 | ||
434aeebb RS |
471 | /* A callback that writes the assembly code for a decl in a |
472 | SECTION_NOSWITCH section. DECL is the decl that should be assembled | |
473 | and NAME is the name of its SYMBOL_REF. SIZE is the size of the decl | |
474 | in bytes and ROUNDED is that size rounded up to the next | |
475 | BIGGEST_ALIGNMENT / BITS_PER_UNIT boundary. | |
476 | ||
477 | Return true if the callback used DECL_ALIGN to set the object's | |
478 | alignment. A false return value implies that we are relying | |
479 | on the rounded size to align the decl. */ | |
480 | typedef bool (*noswitch_section_callback) (tree decl, const char *name, | |
481 | unsigned HOST_WIDE_INT size, | |
482 | unsigned HOST_WIDE_INT rounded); | |
483 | ||
484 | /* Information about a SECTION_NOSWITCH section. */ | |
d1b38208 | 485 | struct GTY(()) noswitch_section { |
434aeebb RS |
486 | struct section_common common; |
487 | ||
488 | /* The callback used to assemble decls in this section. */ | |
489 | noswitch_section_callback GTY ((skip)) callback; | |
490 | }; | |
491 | ||
d6b5193b | 492 | /* Information about a section, which may be named or unnamed. */ |
d1b38208 | 493 | union GTY ((desc ("SECTION_STYLE (&(%h))"))) section { |
d6b5193b RS |
494 | struct section_common GTY ((skip)) common; |
495 | struct named_section GTY ((tag ("SECTION_NAMED"))) named; | |
434aeebb RS |
496 | struct unnamed_section GTY ((tag ("SECTION_UNNAMED"))) unnamed; |
497 | struct noswitch_section GTY ((tag ("SECTION_NOSWITCH"))) noswitch; | |
d6b5193b RS |
498 | }; |
499 | ||
434aeebb RS |
500 | /* Return the style of section SECT. */ |
501 | #define SECTION_STYLE(SECT) ((SECT)->common.flags & SECTION_STYLE_MASK) | |
502 | ||
aacd3885 RS |
503 | struct object_block; |
504 | ||
d6b5193b RS |
505 | /* Special well-known sections. */ |
506 | extern GTY(()) section *text_section; | |
507 | extern GTY(()) section *data_section; | |
508 | extern GTY(()) section *readonly_data_section; | |
509 | extern GTY(()) section *sdata_section; | |
510 | extern GTY(()) section *ctors_section; | |
511 | extern GTY(()) section *dtors_section; | |
512 | extern GTY(()) section *bss_section; | |
513 | extern GTY(()) section *sbss_section; | |
d6b5193b RS |
514 | extern GTY(()) section *exception_section; |
515 | extern GTY(()) section *eh_frame_section; | |
434aeebb RS |
516 | extern GTY(()) section *tls_comm_section; |
517 | extern GTY(()) section *comm_section; | |
518 | extern GTY(()) section *lcomm_section; | |
519 | extern GTY(()) section *bss_noswitch_section; | |
d6b5193b RS |
520 | |
521 | extern GTY(()) section *in_section; | |
c543ca49 | 522 | extern GTY(()) bool in_cold_section_p; |
d6b5193b RS |
523 | |
524 | extern section *get_unnamed_section (unsigned int, void (*) (const void *), | |
525 | const void *); | |
526 | extern section *get_section (const char *, unsigned int, tree); | |
527 | extern section *get_named_section (tree, const char *, int); | |
7fece979 | 528 | extern section *get_variable_section (tree, bool); |
aacd3885 RS |
529 | extern void place_block_symbol (rtx); |
530 | extern rtx get_section_anchor (struct object_block *, HOST_WIDE_INT, | |
531 | enum tls_model); | |
d6b5193b RS |
532 | extern section *mergeable_constant_section (enum machine_mode, |
533 | unsigned HOST_WIDE_INT, | |
534 | unsigned int); | |
535 | extern section *function_section (tree); | |
536 | extern section *unlikely_text_section (void); | |
537 | extern section *current_function_section (void); | |
538 | ||
b2f4bed8 MM |
539 | /* Return the numbered .ctors.N (if CONSTRUCTOR_P) or .dtors.N (if |
540 | not) section for PRIORITY. */ | |
541 | extern section *get_cdtor_priority_section (int, bool); | |
542 | ||
d6b5193b RS |
543 | extern bool unlikely_text_section_p (section *); |
544 | extern void switch_to_section (section *); | |
545 | extern void output_section_asm_op (const void *); | |
7dcbf659 | 546 | |
0a35513e AH |
547 | extern void record_tm_clone_pair (tree, tree); |
548 | extern void finish_tm_clone_pairs (void); | |
549 | extern tree get_tm_clone_pair (tree); | |
550 | ||
b5f5d41d AS |
551 | extern void default_asm_output_source_filename (FILE *, const char *); |
552 | extern void output_file_directive (FILE *, const char *); | |
553 | ||
bcda12f4 | 554 | extern unsigned int default_section_type_flags (tree, const char *, int); |
0c20a65f | 555 | |
434aeebb | 556 | extern bool have_global_bss_p (void); |
2d7b0500 DE |
557 | extern bool bss_initializer_p (const_tree); |
558 | ||
c18a5b6c MM |
559 | extern void default_no_named_section (const char *, unsigned int, tree); |
560 | extern void default_elf_asm_named_section (const char *, unsigned int, tree); | |
3101faab | 561 | extern enum section_category categorize_decl_for_section (const_tree, int); |
c18a5b6c MM |
562 | extern void default_coff_asm_named_section (const char *, unsigned int, tree); |
563 | extern void default_pe_asm_named_section (const char *, unsigned int, tree); | |
0c20a65f | 564 | |
bcda12f4 SB |
565 | extern void default_named_section_asm_out_destructor (rtx, int); |
566 | extern void default_dtor_section_asm_out_destructor (rtx, int); | |
bcda12f4 SB |
567 | extern void default_named_section_asm_out_constructor (rtx, int); |
568 | extern void default_ctor_section_asm_out_constructor (rtx, int); | |
0c20a65f | 569 | |
9b580a0b RH |
570 | extern section *default_select_section (tree, int, unsigned HOST_WIDE_INT); |
571 | extern section *default_elf_select_section (tree, int, unsigned HOST_WIDE_INT); | |
0c20a65f | 572 | extern void default_unique_section (tree, int); |
d6b5193b RS |
573 | extern section *default_function_rodata_section (tree); |
574 | extern section *default_no_function_rodata_section (tree); | |
50b0b78a | 575 | extern section *default_clone_table_section (void); |
d6b5193b | 576 | extern section *default_select_rtx_section (enum machine_mode, rtx, |
0c20a65f | 577 | unsigned HOST_WIDE_INT); |
d6b5193b RS |
578 | extern section *default_elf_select_rtx_section (enum machine_mode, rtx, |
579 | unsigned HOST_WIDE_INT); | |
0c20a65f AJ |
580 | extern void default_encode_section_info (tree, rtx, int); |
581 | extern const char *default_strip_name_encoding (const char *); | |
aacd3885 | 582 | extern void default_asm_output_anchor (rtx); |
3101faab KG |
583 | extern bool default_use_anchors_for_symbol_p (const_rtx); |
584 | extern bool default_binds_local_p (const_tree); | |
585 | extern bool default_binds_local_p_1 (const_tree, int); | |
0c20a65f | 586 | extern void default_globalize_label (FILE *, const char *); |
812b587e | 587 | extern void default_globalize_decl_name (FILE *, tree); |
eeab4d81 | 588 | extern void default_emit_unwind_label (FILE *, tree, int, int); |
083cad55 | 589 | extern void default_emit_except_table_label (FILE *); |
4ee3b013 JR |
590 | extern void default_generate_internal_label (char *, const char *, |
591 | unsigned long); | |
0c20a65f | 592 | extern void default_internal_label (FILE *, const char *, unsigned long); |
e4f7c483 AS |
593 | extern void default_asm_declare_constant_name (FILE *, const char *, |
594 | const_tree, HOST_WIDE_INT); | |
0c20a65f AJ |
595 | extern void default_file_start (void); |
596 | extern void file_end_indicate_exec_stack (void); | |
7458026b | 597 | extern void file_end_indicate_split_stack (void); |
772c5265 | 598 | |
c47c29c8 L |
599 | extern void default_elf_asm_output_external (FILE *file, tree, |
600 | const char *); | |
5e3929ed DA |
601 | extern void default_elf_asm_output_limited_string (FILE *, const char *); |
602 | extern void default_elf_asm_output_ascii (FILE *, const char *, unsigned int); | |
603 | extern void default_elf_internal_label (FILE *, const char *, unsigned long); | |
604 | ||
9ce7ad7f L |
605 | extern void default_elf_init_array_asm_out_constructor (rtx, int); |
606 | extern void default_elf_fini_array_asm_out_destructor (rtx, int); | |
c47c29c8 L |
607 | extern int maybe_assemble_visibility (tree); |
608 | ||
b413068c | 609 | extern int default_address_cost (rtx, enum machine_mode, addr_space_t, bool); |
e91e4f6c | 610 | |
d3c12306 EB |
611 | /* Output stack usage information. */ |
612 | extern void output_stack_usage (void); | |
613 | ||
e91e4f6c | 614 | #endif /* ! GCC_OUTPUT_H */ |