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Commit | Line | Data |
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0c2768fc RS |
1 | /* Declarations for insn-output.c. These functions are defined in recog.c, |
2 | final.c, and varasm.c. | |
6fb5fa3c | 3 | Copyright (C) 1987, 1991, 1994, 1997, 1998, 1999, 2000, 2001, 2002, |
7fece979 | 4 | 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
e4f7c483 | 5 | Free Software Foundation, Inc. |
0c2768fc | 6 | |
1322177d | 7 | This file is part of GCC. |
0c2768fc | 8 | |
1322177d LB |
9 | GCC is free software; you can redistribute it and/or modify it under |
10 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 11 | Software Foundation; either version 3, or (at your option) any later |
1322177d | 12 | version. |
0c2768fc | 13 | |
1322177d LB |
14 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
15 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
17 | for more details. | |
0c2768fc RS |
18 | |
19 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
20 | along with GCC; see the file COPYING3. If not see |
21 | <http://www.gnu.org/licenses/>. */ | |
0c2768fc | 22 | |
e91e4f6c KG |
23 | #ifndef GCC_OUTPUT_H |
24 | #define GCC_OUTPUT_H | |
25 | ||
9b1d8cd6 | 26 | /* Initialize data in final at the beginning of a compilation. */ |
0c20a65f | 27 | extern void init_final (const char *); |
9b1d8cd6 | 28 | |
9b1d8cd6 RK |
29 | /* Enable APP processing of subsequent output. |
30 | Used before the output from an `asm' statement. */ | |
0c20a65f | 31 | extern void app_enable (void); |
9b1d8cd6 RK |
32 | |
33 | /* Disable APP processing of subsequent output. | |
34 | Called from varasm.c before most kinds of output. */ | |
0c20a65f | 35 | extern void app_disable (void); |
9b1d8cd6 | 36 | |
a4f31c00 | 37 | /* Return the number of slots filled in the current |
9b1d8cd6 RK |
38 | delayed branch sequence (we don't count the insn needing the |
39 | delay slot). Zero if not in a delayed branch sequence. */ | |
0c20a65f | 40 | extern int dbr_sequence_length (void); |
9b1d8cd6 RK |
41 | |
42 | /* Indicate that branch shortening hasn't yet been done. */ | |
0c20a65f | 43 | extern void init_insn_lengths (void); |
9b1d8cd6 RK |
44 | |
45 | /* Obtain the current length of an insn. If branch shortening has been done, | |
46 | get its actual length. Otherwise, get its maximum length. */ | |
0c20a65f | 47 | extern int get_attr_length (rtx); |
9b1d8cd6 | 48 | |
070a7956 R |
49 | /* Obtain the current length of an insn. If branch shortening has been done, |
50 | get its actual length. Otherwise, get its minimum length. */ | |
51 | extern int get_attr_min_length (rtx); | |
52 | ||
9b1d8cd6 RK |
53 | /* Make a pass over all insns and compute their actual lengths by shortening |
54 | any branches of variable length if possible. */ | |
0c20a65f | 55 | extern void shorten_branches (rtx); |
9b1d8cd6 RK |
56 | |
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'. */ | |
0c20a65f | 62 | extern void final_start_function (rtx, 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. */ | |
c9d691e9 | 70 | extern void final (rtx, 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. */ | |
c9d691e9 | 75 | extern rtx final_scan_insn (rtx, 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. */ | |
0c20a65f | 79 | extern rtx alter_subreg (rtx *); |
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. */ | |
0c20a65f | 95 | extern int insn_current_reference_address (rtx); |
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) | |
124 | /* This is a magic identifier which allows GCC to figure out the type | |
125 | of HOST_WIDE_INT for %wd specifier checks. You must issue this | |
126 | typedef before using the __asm_fprintf__ format attribute. */ | |
127 | typedef HOST_WIDE_INT __gcc_host_wide_int__; | |
128 | #else | |
129 | #define ATTRIBUTE_ASM_FPRINTF(m, n) ATTRIBUTE_NONNULL(m) | |
130 | #endif | |
131 | ||
5e3929ed DA |
132 | extern void fprint_whex (FILE *, unsigned HOST_WIDE_INT); |
133 | extern void fprint_ul (FILE *, unsigned long); | |
134 | extern int sprint_ul (char *, unsigned long); | |
135 | ||
0c20a65f AJ |
136 | extern void asm_fprintf (FILE *file, const char *p, ...) |
137 | ATTRIBUTE_ASM_FPRINTF(2, 3); | |
9b1d8cd6 RK |
138 | |
139 | /* Split up a CONST_DOUBLE or integer constant rtx into two rtx's for single | |
140 | words. */ | |
0c20a65f | 141 | extern void split_double (rtx, rtx *, rtx *); |
9b1d8cd6 RK |
142 | |
143 | /* Return nonzero if this function has no function calls. */ | |
0c20a65f | 144 | extern int leaf_function_p (void); |
9b1d8cd6 | 145 | |
09da1532 | 146 | /* Return 1 if branch is a forward branch. |
a4f31c00 AJ |
147 | Uses insn_shuid array, so it works only in the final pass. May be used by |
148 | output templates to add branch prediction hints, for example. */ | |
0c20a65f | 149 | extern int final_forward_branch_p (rtx); |
a4f31c00 | 150 | |
9b1d8cd6 RK |
151 | /* Return 1 if this function uses only the registers that can be |
152 | safely renumbered. */ | |
0c20a65f | 153 | extern int only_leaf_regs_used (void); |
9b1d8cd6 RK |
154 | |
155 | /* Scan IN_RTX and its subexpressions, and renumber all regs into those | |
156 | available in leaf functions. */ | |
0c20a65f | 157 | extern void leaf_renumber_regs_insn (rtx); |
a1493f9f | 158 | |
4bbf910e | 159 | /* Locate the proper template for the given insn-code. */ |
0c20a65f | 160 | extern const char *get_insn_template (int, rtx); |
4bbf910e | 161 | |
ed068cf5 RK |
162 | /* Functions in varasm.c. */ |
163 | ||
d6f4ec51 | 164 | /* Declare DECL to be a weak symbol. */ |
0c20a65f | 165 | extern void declare_weak (tree); |
45806a3f | 166 | /* Merge weak status. */ |
0c20a65f | 167 | extern void merge_weak (tree, tree); |
d6f4ec51 | 168 | |
50b2596f | 169 | /* Emit any pending weak declarations. */ |
0c20a65f | 170 | extern void weak_finish (void); |
50b2596f | 171 | |
d347d97e SB |
172 | /* Return the default TLS model for a given variable. */ |
173 | extern enum tls_model decl_default_tls_model (const_tree); | |
174 | ||
ed068cf5 RK |
175 | /* Decode an `asm' spec for a declaration as a register name. |
176 | Return the register number, or -1 if nothing specified, | |
177 | or -2 if the ASMSPEC is not `cc' or `memory' and is not recognized, | |
178 | or -3 if ASMSPEC is `cc' and is not recognized, | |
179 | or -4 if ASMSPEC is `memory' and is not recognized. | |
180 | Accept an exact spelling or a decimal number. | |
181 | Prefixes such as % are optional. */ | |
0c20a65f | 182 | extern int decode_reg_name (const char *); |
ed068cf5 | 183 | |
0c6d290e RE |
184 | /* Similar to decode_reg_name, but takes an extra parameter that is a |
185 | pointer to the number of (internal) registers described by the | |
186 | external name. */ | |
187 | extern int decode_reg_name_and_count (const char *, int *); | |
188 | ||
0c20a65f | 189 | extern void assemble_alias (tree, tree); |
07250f0e | 190 | extern void do_assemble_alias (tree, tree); |
d6f4ec51 | 191 | |
0c20a65f | 192 | extern void default_assemble_visibility (tree, int); |
47bd70b5 | 193 | |
ed068cf5 RK |
194 | /* Output a string of literal assembler code |
195 | for an `asm' keyword used between functions. */ | |
0c20a65f | 196 | extern void assemble_asm (tree); |
ed068cf5 | 197 | |
ed068cf5 RK |
198 | /* Output assembler code for the constant pool of a function and associated |
199 | with defining the name of the function. DECL describes the function. | |
200 | NAME is the function's name. For the constant pool, we use the current | |
201 | constant pool data. */ | |
0c20a65f | 202 | extern void assemble_start_function (tree, const char *); |
ed068cf5 RK |
203 | |
204 | /* Output assembler code associated with defining the size of the | |
205 | function. DECL describes the function. NAME is the function's name. */ | |
0c20a65f | 206 | extern void assemble_end_function (tree, const char *); |
ed068cf5 | 207 | |
ed068cf5 RK |
208 | /* Assemble everything that is needed for a variable or function declaration. |
209 | Not used for automatic variables, and not used for function definitions. | |
210 | Should not be called for variables of incomplete structure type. | |
211 | ||
212 | TOP_LEVEL is nonzero if this variable has file scope. | |
213 | AT_END is nonzero if this is the special handling, at end of compilation, | |
214 | to define things that have had only tentative definitions. | |
215 | DONT_OUTPUT_DATA if nonzero means don't actually output the | |
216 | initial value (that will be done by the caller). */ | |
0c20a65f | 217 | extern void assemble_variable (tree, int, int, int); |
ed068cf5 | 218 | |
88d03811 JH |
219 | /* Compute the alignment of variable specified by DECL. |
220 | DONT_OUTPUT_DATA is from assemble_variable. */ | |
221 | extern void align_variable (tree decl, bool dont_output_data); | |
222 | ||
2e226e66 | 223 | /* Queue for outputting something to declare an external symbol to the |
c47c29c8 L |
224 | assembler. (Most assemblers don't need this, so we normally output |
225 | nothing.) Do nothing if DECL is not external. */ | |
0c20a65f | 226 | extern void assemble_external (tree); |
ed068cf5 | 227 | |
d8d79d15 | 228 | /* Assemble code to leave SIZE bytes of zeros. */ |
0c20a65f | 229 | extern void assemble_zeros (unsigned HOST_WIDE_INT); |
d8d79d15 RE |
230 | |
231 | /* Assemble an alignment pseudo op for an ALIGN-bit boundary. */ | |
0c20a65f | 232 | extern void assemble_align (int); |
d8d79d15 RE |
233 | |
234 | /* Assemble a string constant with the specified C string as contents. */ | |
0c20a65f | 235 | extern void assemble_string (const char *, int); |
d8d79d15 | 236 | |
ed068cf5 | 237 | /* Similar, for calling a library function FUN. */ |
0c20a65f | 238 | extern void assemble_external_libcall (rtx); |
9b1d8cd6 | 239 | |
ed068cf5 | 240 | /* Assemble a label named NAME. */ |
e4f7c483 | 241 | extern void assemble_label (FILE *, const char *); |
ed068cf5 | 242 | |
57829bc4 MM |
243 | /* Output to FILE (an assembly file) a reference to NAME. If NAME |
244 | starts with a *, the rest of NAME is output verbatim. Otherwise | |
245 | NAME is transformed in a target-specific way (usually by the | |
246 | addition of an underscore). */ | |
247 | extern void assemble_name_raw (FILE *, const char *); | |
248 | ||
249 | /* Like assemble_name_raw, but should be used when NAME might refer to | |
250 | an entity that is also represented as a tree (like a function or | |
251 | variable). If NAME does refer to such an entity, that entity will | |
252 | be marked as referenced. */ | |
0c20a65f | 253 | extern void assemble_name (FILE *, const char *); |
ed068cf5 | 254 | |
301d03af RS |
255 | /* Return the assembler directive for creating a given kind of integer |
256 | object. SIZE is the number of bytes in the object and ALIGNED_P | |
257 | indicates whether it is known to be aligned. Return NULL if the | |
258 | assembly dialect has no such directive. | |
259 | ||
260 | The returned string should be printed at the start of a new line and | |
261 | be followed immediately by the object's initial value. */ | |
0c20a65f | 262 | extern const char *integer_asm_op (int, int); |
301d03af | 263 | |
301d03af RS |
264 | /* Use directive OP to assemble an integer object X. Print OP at the |
265 | start of the line, followed immediately by the value of X. */ | |
0c20a65f | 266 | extern void assemble_integer_with_op (const char *, rtx); |
301d03af RS |
267 | |
268 | /* The default implementation of the asm_out.integer target hook. */ | |
0c20a65f | 269 | extern bool default_assemble_integer (rtx, unsigned int, int); |
301d03af | 270 | |
c8af3574 RH |
271 | /* Assemble the integer constant X into an object of SIZE bytes. ALIGN is |
272 | the alignment of the integer in bits. Return 1 if we were able to output | |
0e61db61 NS |
273 | the constant, otherwise 0. If FORCE is nonzero the constant must |
274 | be outputable. */ | |
0c20a65f | 275 | extern bool assemble_integer (rtx, unsigned, unsigned, int); |
301d03af | 276 | |
f16d3f39 JH |
277 | /* Return section for TEXT_SECITON_NAME if DECL or DECL_SECTION_NAME (DECL) |
278 | is NULL. */ | |
279 | extern section *get_named_text_section (tree, const char *, const char *); | |
280 | ||
301d03af RS |
281 | /* An interface to assemble_integer for the common case in which a value is |
282 | fully aligned and must be printed. VALUE is the value of the integer | |
283 | object and SIZE is the number of bytes it contains. */ | |
284 | #define assemble_aligned_integer(SIZE, VALUE) \ | |
285 | assemble_integer (VALUE, SIZE, (SIZE) * BITS_PER_UNIT, 1) | |
ed068cf5 | 286 | |
e2500fed | 287 | #ifdef REAL_VALUE_TYPE_SIZE |
ed068cf5 | 288 | /* Assemble the floating-point constant D into an object of size MODE. */ |
0c20a65f | 289 | extern void assemble_real (REAL_VALUE_TYPE, enum machine_mode, unsigned); |
ed068cf5 | 290 | #endif |
ed068cf5 | 291 | |
b2f4bed8 MM |
292 | /* Write the address of the entity given by SYMBOL to SEC. */ |
293 | extern void assemble_addr_to_section (rtx, section *); | |
294 | ||
ed068cf5 | 295 | /* Return the size of the constant pool. */ |
0c20a65f | 296 | extern int get_pool_size (void); |
ed068cf5 | 297 | |
36f0e0a6 | 298 | #ifdef HAVE_peephole |
0c20a65f | 299 | extern rtx peephole (rtx); |
36f0e0a6 KG |
300 | #endif |
301 | ||
1d3dbd99 | 302 | extern void output_shared_constant_pool (void); |
ed068cf5 | 303 | |
aacd3885 RS |
304 | extern void output_object_blocks (void); |
305 | ||
a803773f JM |
306 | extern void output_quoted_string (FILE *, const char *); |
307 | ||
fe24d485 OH |
308 | /* Whether a constructor CTOR is a valid static constant initializer if all |
309 | its elements are. This used to be internal to initializer_constant_valid_p | |
310 | and has been exposed to let other functions like categorize_ctor_elements | |
311 | evaluate the property while walking a constructor for other purposes. */ | |
312 | ||
fa233e34 | 313 | extern bool constructor_static_from_elts_p (const_tree); |
fe24d485 | 314 | |
14a774a9 RK |
315 | /* Return nonzero if VALUE is a valid constant-valued expression |
316 | for use in initializing a static variable; one that can be an | |
317 | element of a "constant" initializer. | |
318 | ||
319 | Return null_pointer_node if the value is absolute; | |
320 | if it is relocatable, return the variable that determines the relocation. | |
321 | We assume that VALUE has been folded as much as possible; | |
322 | therefore, we do not need to check for such things as | |
323 | arithmetic-combinations of integers. */ | |
0c20a65f | 324 | extern tree initializer_constant_valid_p (tree, tree); |
14a774a9 | 325 | |
324c9b02 OH |
326 | /* Return true if VALUE is a valid constant-valued expression |
327 | for use in initializing a static bit-field; one that can be | |
328 | an element of a "constant" initializer. */ | |
329 | extern bool initializer_constant_valid_for_bitfield_p (tree); | |
330 | ||
ed068cf5 RK |
331 | /* Output assembler code for constant EXP to FILE, with no label. |
332 | This includes the pseudo-op such as ".int" or ".byte", and a newline. | |
333 | Assumes output_addressed_constants has been done on EXP already. | |
334 | ||
335 | Generate exactly SIZE bytes of assembler data, padding at the end | |
c8af3574 RH |
336 | with zeros if necessary. SIZE must always be specified. |
337 | ||
338 | ALIGN is the alignment in bits that may be assumed for the data. */ | |
0c20a65f | 339 | extern void output_constant (tree, unsigned HOST_WIDE_INT, unsigned int); |
aaff8ce0 | 340 | |
0c2768fc RS |
341 | /* When outputting delayed branch sequences, this rtx holds the |
342 | sequence being output. It is null when no delayed branch | |
343 | sequence is being output, so it can be used as a test in the | |
344 | insn output code. | |
345 | ||
346 | This variable is defined in final.c. */ | |
347 | extern rtx final_sequence; | |
348 | ||
f4dc8d96 NB |
349 | /* The line number of the beginning of the current function. Various |
350 | md code needs this so that it can output relative linenumbers. */ | |
351 | ||
352 | #ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers. */ | |
353 | extern int sdb_begin_function_line; | |
354 | #endif | |
355 | ||
49ad7cfa | 356 | /* File in which assembler code is being written. */ |
0c2768fc | 357 | |
49ad7cfa BS |
358 | #ifdef BUFSIZ |
359 | extern FILE *asm_out_file; | |
360 | #endif | |
3b304f5b ZW |
361 | |
362 | /* The first global object in the file. */ | |
363 | extern const char *first_global_object_name; | |
364 | ||
365 | /* The first weak object in the file. */ | |
366 | extern const char *weak_global_object_name; | |
367 | ||
54ff41b7 JW |
368 | /* Nonzero if function being compiled doesn't contain any calls |
369 | (ignoring the prologue and epilogue). This is set prior to | |
370 | local register allocation and is valid for the remaining | |
2ba84f36 | 371 | compiler passes. */ |
54ff41b7 JW |
372 | |
373 | extern int current_function_is_leaf; | |
374 | ||
fdb8a883 JW |
375 | /* Nonzero if function being compiled doesn't modify the stack pointer |
376 | (ignoring the prologue and epilogue). This is only valid after | |
6fb5fa3c | 377 | pass_stack_ptr_mod has run. */ |
fdb8a883 JW |
378 | |
379 | extern int current_function_sp_is_unchanging; | |
380 | ||
54ff41b7 JW |
381 | /* Nonzero if the function being compiled is a leaf function which only |
382 | uses leaf registers. This is valid after reload (specifically after | |
383 | sched2) and is useful only if the port defines LEAF_REGISTERS. */ | |
384 | ||
385 | extern int current_function_uses_only_leaf_regs; | |
386 | ||
a86d864c RH |
387 | /* Default file in which to dump debug output. */ |
388 | ||
389 | #ifdef BUFSIZ | |
c263766c | 390 | extern FILE *dump_file; |
a86d864c RH |
391 | #endif |
392 | ||
afe48e06 | 393 | /* Nonnull if the insn currently being emitted was a COND_EXEC pattern. */ |
bcda12f4 | 394 | extern rtx current_insn_predicate; |
afe48e06 | 395 | |
b1a9f6a0 | 396 | /* Last insn processed by final_scan_insn. */ |
bcda12f4 | 397 | extern rtx current_output_insn; |
b1a9f6a0 | 398 | |
c8b94768 | 399 | /* Nonzero while outputting an `asm' with operands. |
0e61db61 | 400 | This means that inconsistencies are the user's fault, so don't die. |
c8b94768 RH |
401 | The precise value is the insn being output, to pass to error_for_asm. */ |
402 | extern rtx this_is_asm_operands; | |
403 | ||
f6db1481 RH |
404 | /* Carry information from ASM_DECLARE_OBJECT_NAME |
405 | to ASM_FINISH_DECLARE_OBJECT. */ | |
406 | extern int size_directive_output; | |
407 | extern tree last_assemble_variable_decl; | |
408 | ||
87c8b4be CT |
409 | extern bool first_function_block_is_cold; |
410 | ||
4e4d733e L |
411 | /* Decide whether DECL needs to be in a writable section. |
412 | RELOC is the same as for SELECT_SECTION. */ | |
3101faab | 413 | extern bool decl_readonly_section (const_tree, int); |
19283265 | 414 | |
b2218cc1 AO |
415 | /* This can be used to compute RELOC for the function above, when |
416 | given a constant expression. */ | |
417 | extern int compute_reloc_for_constant (tree); | |
418 | ||
19283265 | 419 | /* User label prefix in effect for this compilation. */ |
87e11268 | 420 | extern const char *user_label_prefix; |
98577d03 | 421 | |
08c148a8 | 422 | /* Default target function prologue and epilogue assembler output. */ |
0c20a65f | 423 | extern void default_function_pro_epilogue (FILE *, HOST_WIDE_INT); |
b4c25db2 | 424 | |
14d11d40 IS |
425 | /* Default target function switched text sections. */ |
426 | extern void default_function_switched_text_sections (FILE *, tree, bool); | |
427 | ||
b4c25db2 | 428 | /* Default target hook that outputs nothing to a stream. */ |
0c20a65f | 429 | extern void no_asm_to_stream (FILE *); |
7c262518 | 430 | |
d55d8fc7 | 431 | /* Flags controlling properties of a section. */ |
201556f0 JJ |
432 | #define SECTION_ENTSIZE 0x000ff /* entity size in section */ |
433 | #define SECTION_CODE 0x00100 /* contains code */ | |
434 | #define SECTION_WRITE 0x00200 /* data is writable */ | |
435 | #define SECTION_DEBUG 0x00400 /* contains debug data */ | |
436 | #define SECTION_LINKONCE 0x00800 /* is linkonce */ | |
437 | #define SECTION_SMALL 0x01000 /* contains "small data" */ | |
438 | #define SECTION_BSS 0x02000 /* contains zeros only */ | |
439 | #define SECTION_FORGET 0x04000 /* forget that we've entered the section */ | |
440 | #define SECTION_MERGE 0x08000 /* contains mergeable data */ | |
441 | #define SECTION_STRINGS 0x10000 /* contains zero terminated strings without | |
442 | embedded zeros */ | |
10c45943 | 443 | #define SECTION_OVERRIDE 0x20000 /* allow override of default flags */ |
3d78f2e9 | 444 | #define SECTION_TLS 0x40000 /* contains thread-local storage */ |
6a0a6ac4 | 445 | #define SECTION_NOTYPE 0x80000 /* don't output @progbits */ |
d6b5193b | 446 | #define SECTION_DECLARED 0x100000 /* section has been used */ |
434aeebb RS |
447 | #define SECTION_STYLE_MASK 0x600000 /* bits used for SECTION_STYLE */ |
448 | #define SECTION_COMMON 0x800000 /* contains common data */ | |
7fece979 | 449 | #define SECTION_RELRO 0x1000000 /* data is readonly after relocation processing */ |
2dc5ca18 GJL |
450 | #define SECTION_EXCLUDE 0x2000000 /* discarded by the linker */ |
451 | #define SECTION_MACH_DEP 0x4000000 /* subsequent bits reserved for target */ | |
434aeebb RS |
452 | |
453 | /* This SECTION_STYLE is used for unnamed sections that we can switch | |
454 | to using a special assembler directive. */ | |
455 | #define SECTION_UNNAMED 0x000000 | |
456 | ||
457 | /* This SECTION_STYLE is used for named sections that we can switch | |
458 | to using a general section directive. */ | |
459 | #define SECTION_NAMED 0x200000 | |
460 | ||
461 | /* This SECTION_STYLE is used for sections that we cannot switch to at | |
462 | all. The choice of section is implied by the directive that we use | |
463 | to declare the object. */ | |
464 | #define SECTION_NOSWITCH 0x400000 | |
7c262518 | 465 | |
7dcbf659 JH |
466 | /* A helper function for default_elf_select_section and |
467 | default_elf_unique_section. Categorizes the DECL. */ | |
468 | ||
469 | enum section_category | |
470 | { | |
471 | SECCAT_TEXT, | |
472 | ||
473 | SECCAT_RODATA, | |
474 | SECCAT_RODATA_MERGE_STR, | |
475 | SECCAT_RODATA_MERGE_STR_INIT, | |
476 | SECCAT_RODATA_MERGE_CONST, | |
477 | SECCAT_SRODATA, | |
478 | ||
479 | SECCAT_DATA, | |
480 | ||
481 | /* To optimize loading of shared programs, define following subsections | |
482 | of data section: | |
483 | _REL Contains data that has relocations, so they get grouped | |
484 | together and dynamic linker will visit fewer pages in memory. | |
485 | _RO Contains data that is otherwise read-only. This is useful | |
486 | with prelinking as most relocations won't be dynamically | |
487 | linked and thus stay read only. | |
488 | _LOCAL Marks data containing relocations only to local objects. | |
489 | These relocations will get fully resolved by prelinking. */ | |
490 | SECCAT_DATA_REL, | |
491 | SECCAT_DATA_REL_LOCAL, | |
492 | SECCAT_DATA_REL_RO, | |
493 | SECCAT_DATA_REL_RO_LOCAL, | |
494 | ||
495 | SECCAT_SDATA, | |
496 | SECCAT_TDATA, | |
497 | ||
498 | SECCAT_BSS, | |
499 | SECCAT_SBSS, | |
8b84c596 | 500 | SECCAT_TBSS |
7dcbf659 JH |
501 | }; |
502 | ||
d6b5193b | 503 | /* Information that is provided by all instances of the section type. */ |
d1b38208 | 504 | struct GTY(()) section_common { |
d6b5193b RS |
505 | /* The set of SECTION_* flags that apply to this section. */ |
506 | unsigned int flags; | |
507 | }; | |
508 | ||
434aeebb | 509 | /* Information about a SECTION_NAMED section. */ |
d1b38208 | 510 | struct GTY(()) named_section { |
d6b5193b RS |
511 | struct section_common common; |
512 | ||
513 | /* The name of the section. */ | |
514 | const char *name; | |
515 | ||
516 | /* If nonnull, the VAR_DECL or FUNCTION_DECL with which the | |
517 | section is associated. */ | |
518 | tree decl; | |
519 | }; | |
520 | ||
521 | /* A callback that writes the assembly code for switching to an unnamed | |
522 | section. The argument provides callback-specific data. */ | |
523 | typedef void (*unnamed_section_callback) (const void *); | |
524 | ||
434aeebb | 525 | /* Information about a SECTION_UNNAMED section. */ |
d1b38208 | 526 | struct GTY(()) unnamed_section { |
d6b5193b RS |
527 | struct section_common common; |
528 | ||
529 | /* The callback used to switch to the section, and the data that | |
530 | should be passed to the callback. */ | |
531 | unnamed_section_callback GTY ((skip)) callback; | |
532 | const void *GTY ((skip)) data; | |
533 | ||
534 | /* The next entry in the chain of unnamed sections. */ | |
535 | section *next; | |
536 | }; | |
537 | ||
434aeebb RS |
538 | /* A callback that writes the assembly code for a decl in a |
539 | SECTION_NOSWITCH section. DECL is the decl that should be assembled | |
540 | and NAME is the name of its SYMBOL_REF. SIZE is the size of the decl | |
541 | in bytes and ROUNDED is that size rounded up to the next | |
542 | BIGGEST_ALIGNMENT / BITS_PER_UNIT boundary. | |
543 | ||
544 | Return true if the callback used DECL_ALIGN to set the object's | |
545 | alignment. A false return value implies that we are relying | |
546 | on the rounded size to align the decl. */ | |
547 | typedef bool (*noswitch_section_callback) (tree decl, const char *name, | |
548 | unsigned HOST_WIDE_INT size, | |
549 | unsigned HOST_WIDE_INT rounded); | |
550 | ||
551 | /* Information about a SECTION_NOSWITCH section. */ | |
d1b38208 | 552 | struct GTY(()) noswitch_section { |
434aeebb RS |
553 | struct section_common common; |
554 | ||
555 | /* The callback used to assemble decls in this section. */ | |
556 | noswitch_section_callback GTY ((skip)) callback; | |
557 | }; | |
558 | ||
d6b5193b | 559 | /* Information about a section, which may be named or unnamed. */ |
d1b38208 | 560 | union GTY ((desc ("SECTION_STYLE (&(%h))"))) section { |
d6b5193b RS |
561 | struct section_common GTY ((skip)) common; |
562 | struct named_section GTY ((tag ("SECTION_NAMED"))) named; | |
434aeebb RS |
563 | struct unnamed_section GTY ((tag ("SECTION_UNNAMED"))) unnamed; |
564 | struct noswitch_section GTY ((tag ("SECTION_NOSWITCH"))) noswitch; | |
d6b5193b RS |
565 | }; |
566 | ||
434aeebb RS |
567 | /* Return the style of section SECT. */ |
568 | #define SECTION_STYLE(SECT) ((SECT)->common.flags & SECTION_STYLE_MASK) | |
569 | ||
aacd3885 RS |
570 | struct object_block; |
571 | ||
d6b5193b RS |
572 | /* Special well-known sections. */ |
573 | extern GTY(()) section *text_section; | |
574 | extern GTY(()) section *data_section; | |
575 | extern GTY(()) section *readonly_data_section; | |
576 | extern GTY(()) section *sdata_section; | |
577 | extern GTY(()) section *ctors_section; | |
578 | extern GTY(()) section *dtors_section; | |
579 | extern GTY(()) section *bss_section; | |
580 | extern GTY(()) section *sbss_section; | |
d6b5193b RS |
581 | extern GTY(()) section *exception_section; |
582 | extern GTY(()) section *eh_frame_section; | |
434aeebb RS |
583 | extern GTY(()) section *tls_comm_section; |
584 | extern GTY(()) section *comm_section; | |
585 | extern GTY(()) section *lcomm_section; | |
586 | extern GTY(()) section *bss_noswitch_section; | |
d6b5193b RS |
587 | |
588 | extern GTY(()) section *in_section; | |
c543ca49 | 589 | extern GTY(()) bool in_cold_section_p; |
d6b5193b RS |
590 | |
591 | extern section *get_unnamed_section (unsigned int, void (*) (const void *), | |
592 | const void *); | |
593 | extern section *get_section (const char *, unsigned int, tree); | |
594 | extern section *get_named_section (tree, const char *, int); | |
7fece979 | 595 | extern section *get_variable_section (tree, bool); |
aacd3885 RS |
596 | extern void place_block_symbol (rtx); |
597 | extern rtx get_section_anchor (struct object_block *, HOST_WIDE_INT, | |
598 | enum tls_model); | |
d6b5193b RS |
599 | extern section *mergeable_constant_section (enum machine_mode, |
600 | unsigned HOST_WIDE_INT, | |
601 | unsigned int); | |
602 | extern section *function_section (tree); | |
603 | extern section *unlikely_text_section (void); | |
604 | extern section *current_function_section (void); | |
605 | ||
b2f4bed8 MM |
606 | /* Return the numbered .ctors.N (if CONSTRUCTOR_P) or .dtors.N (if |
607 | not) section for PRIORITY. */ | |
608 | extern section *get_cdtor_priority_section (int, bool); | |
609 | ||
d6b5193b RS |
610 | extern bool unlikely_text_section_p (section *); |
611 | extern void switch_to_section (section *); | |
612 | extern void output_section_asm_op (const void *); | |
7dcbf659 | 613 | |
0a35513e AH |
614 | extern void record_tm_clone_pair (tree, tree); |
615 | extern void finish_tm_clone_pairs (void); | |
616 | extern tree get_tm_clone_pair (tree); | |
617 | ||
b5f5d41d AS |
618 | extern void default_asm_output_source_filename (FILE *, const char *); |
619 | extern void output_file_directive (FILE *, const char *); | |
620 | ||
bcda12f4 | 621 | extern unsigned int default_section_type_flags (tree, const char *, int); |
0c20a65f | 622 | |
434aeebb | 623 | extern bool have_global_bss_p (void); |
c18a5b6c MM |
624 | extern void default_no_named_section (const char *, unsigned int, tree); |
625 | extern void default_elf_asm_named_section (const char *, unsigned int, tree); | |
3101faab | 626 | extern enum section_category categorize_decl_for_section (const_tree, int); |
c18a5b6c MM |
627 | extern void default_coff_asm_named_section (const char *, unsigned int, tree); |
628 | extern void default_pe_asm_named_section (const char *, unsigned int, tree); | |
0c20a65f | 629 | |
bcda12f4 SB |
630 | extern void default_stabs_asm_out_destructor (rtx, int); |
631 | extern void default_named_section_asm_out_destructor (rtx, int); | |
632 | extern void default_dtor_section_asm_out_destructor (rtx, int); | |
633 | extern void default_stabs_asm_out_constructor (rtx, int); | |
634 | extern void default_named_section_asm_out_constructor (rtx, int); | |
635 | extern void default_ctor_section_asm_out_constructor (rtx, int); | |
0c20a65f | 636 | |
9b580a0b RH |
637 | extern section *default_select_section (tree, int, unsigned HOST_WIDE_INT); |
638 | extern section *default_elf_select_section (tree, int, unsigned HOST_WIDE_INT); | |
0c20a65f | 639 | extern void default_unique_section (tree, int); |
d6b5193b RS |
640 | extern section *default_function_rodata_section (tree); |
641 | extern section *default_no_function_rodata_section (tree); | |
50b0b78a | 642 | extern section *default_clone_table_section (void); |
d6b5193b | 643 | extern section *default_select_rtx_section (enum machine_mode, rtx, |
0c20a65f | 644 | unsigned HOST_WIDE_INT); |
d6b5193b RS |
645 | extern section *default_elf_select_rtx_section (enum machine_mode, rtx, |
646 | unsigned HOST_WIDE_INT); | |
0c20a65f AJ |
647 | extern void default_encode_section_info (tree, rtx, int); |
648 | extern const char *default_strip_name_encoding (const char *); | |
aacd3885 | 649 | extern void default_asm_output_anchor (rtx); |
3101faab KG |
650 | extern bool default_use_anchors_for_symbol_p (const_rtx); |
651 | extern bool default_binds_local_p (const_tree); | |
652 | extern bool default_binds_local_p_1 (const_tree, int); | |
0c20a65f | 653 | extern void default_globalize_label (FILE *, const char *); |
812b587e | 654 | extern void default_globalize_decl_name (FILE *, tree); |
eeab4d81 | 655 | extern void default_emit_unwind_label (FILE *, tree, int, int); |
083cad55 | 656 | extern void default_emit_except_table_label (FILE *); |
4ee3b013 JR |
657 | extern void default_generate_internal_label (char *, const char *, |
658 | unsigned long); | |
0c20a65f | 659 | extern void default_internal_label (FILE *, const char *, unsigned long); |
e4f7c483 AS |
660 | extern void default_asm_declare_constant_name (FILE *, const char *, |
661 | const_tree, HOST_WIDE_INT); | |
0c20a65f AJ |
662 | extern void default_file_start (void); |
663 | extern void file_end_indicate_exec_stack (void); | |
7458026b | 664 | extern void file_end_indicate_split_stack (void); |
772c5265 | 665 | |
c47c29c8 L |
666 | extern void default_elf_asm_output_external (FILE *file, tree, |
667 | const char *); | |
5e3929ed DA |
668 | extern void default_elf_asm_output_limited_string (FILE *, const char *); |
669 | extern void default_elf_asm_output_ascii (FILE *, const char *, unsigned int); | |
670 | extern void default_elf_internal_label (FILE *, const char *, unsigned long); | |
671 | ||
9ce7ad7f L |
672 | extern void default_elf_init_array_asm_out_constructor (rtx, int); |
673 | extern void default_elf_fini_array_asm_out_destructor (rtx, int); | |
c47c29c8 L |
674 | extern int maybe_assemble_visibility (tree); |
675 | ||
f40751dd | 676 | extern int default_address_cost (rtx, bool); |
e91e4f6c | 677 | |
d3c12306 EB |
678 | /* Output stack usage information. */ |
679 | extern void output_stack_usage (void); | |
680 | ||
93a27b7b ZW |
681 | /* dbxout helper functions */ |
682 | #if defined DBX_DEBUGGING_INFO || defined XCOFF_DEBUGGING_INFO | |
683 | ||
684 | extern void dbxout_int (int); | |
685 | extern void dbxout_stabd (int, int); | |
686 | extern void dbxout_begin_stabn (int); | |
687 | extern void dbxout_begin_stabn_sline (int); | |
688 | extern void dbxout_begin_empty_stabs (int); | |
689 | extern void dbxout_begin_simple_stabs (const char *, int); | |
690 | extern void dbxout_begin_simple_stabs_desc (const char *, int, int); | |
691 | ||
692 | extern void dbxout_stab_value_zero (void); | |
693 | extern void dbxout_stab_value_label (const char *); | |
694 | extern void dbxout_stab_value_label_diff (const char *, const char *); | |
695 | extern void dbxout_stab_value_internal_label (const char *, int *); | |
696 | extern void dbxout_stab_value_internal_label_diff (const char *, int *, | |
697 | const char *); | |
698 | ||
699 | #endif | |
700 | ||
e91e4f6c | 701 | #endif /* ! GCC_OUTPUT_H */ |