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d1be3be3 JW |
1 | /* elfos.h -- operating system specific defines to be used when |
2 | targeting GCC for some generic ELF system | |
aeee4812 | 3 | Copyright (C) 1991-2023 Free Software Foundation, Inc. |
d1be3be3 JW |
4 | Based on svr4.h contributed by Ron Guilmette (rfg@netcom.com). |
5 | ||
7ec022b2 | 6 | This file is part of GCC. |
d1be3be3 | 7 | |
7ec022b2 | 8 | GCC is free software; you can redistribute it and/or modify |
d1be3be3 | 9 | it under the terms of the GNU General Public License as published by |
2f83c7d6 | 10 | the Free Software Foundation; either version 3, or (at your option) |
d1be3be3 JW |
11 | any later version. |
12 | ||
7ec022b2 | 13 | GCC is distributed in the hope that it will be useful, |
d1be3be3 JW |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
748086b7 JJ |
18 | Under Section 7 of GPL version 3, you are granted additional |
19 | permissions described in the GCC Runtime Library Exception, version | |
20 | 3.1, as published by the Free Software Foundation. | |
21 | ||
22 | You should have received a copy of the GNU General Public License and | |
23 | a copy of the GCC Runtime Library Exception along with this program; | |
24 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
2f83c7d6 | 25 | <http://www.gnu.org/licenses/>. */ |
d1be3be3 | 26 | |
4e2e315f NB |
27 | #define TARGET_OBJFMT_CPP_BUILTINS() \ |
28 | do \ | |
29 | { \ | |
30 | builtin_define ("__ELF__"); \ | |
31 | } \ | |
32 | while (0) | |
938b21d3 DB |
33 | |
34 | /* Define a symbol indicating that we are using elfos.h. | |
35 | Some CPU specific configuration files use this. */ | |
36 | #define USING_ELFOS_H | |
37 | ||
f6cad4c9 NC |
38 | /* The prefix to add to user-visible assembler symbols. |
39 | ||
40 | For ELF systems the convention is *not* to prepend a leading | |
41 | underscore onto user-level symbol names. */ | |
42 | ||
43 | #undef USER_LABEL_PREFIX | |
44 | #define USER_LABEL_PREFIX "" | |
45 | ||
11d90e2d CD |
46 | /* The biggest alignment supported by ELF in bits. 32-bit ELF |
47 | supports section alignment up to (0x80000000 * 8), while | |
48 | 64-bit ELF supports (0x8000000000000000 * 8). If this macro | |
49 | is not defined, the default is the largest alignment supported | |
50 | by 32-bit ELF and representable on a 32-bit host. Use this | |
51 | macro to limit the alignment which can be specified using | |
52 | the `__attribute__ ((aligned (N)))' construct. */ | |
5793c070 | 53 | #ifndef MAX_OFILE_ALIGNMENT |
11d90e2d | 54 | #define MAX_OFILE_ALIGNMENT (((unsigned int) 1 << 28) * 8) |
f6cad4c9 NC |
55 | #endif |
56 | ||
d1be3be3 JW |
57 | /* Use periods rather than dollar signs in special g++ assembler names. */ |
58 | ||
59 | #define NO_DOLLAR_IN_LABEL | |
60 | ||
43a88a8c | 61 | /* Writing `int' for a bit-field forces int alignment for the structure. */ |
d1be3be3 | 62 | |
ec20cffb | 63 | #ifndef PCC_BITFIELD_TYPE_MATTERS |
d1be3be3 | 64 | #define PCC_BITFIELD_TYPE_MATTERS 1 |
ec20cffb | 65 | #endif |
d1be3be3 | 66 | |
d1be3be3 JW |
67 | /* All ELF targets can support DWARF-2. */ |
68 | ||
d1476635 | 69 | #define DWARF2_DEBUGGING_INFO 1 |
d1be3be3 | 70 | |
f007a638 IB |
71 | /* All ELF targets can support CTF. */ |
72 | ||
73 | #define CTF_DEBUGGING_INFO 1 | |
74 | ||
75 | /* All ELF targets can support BTF. */ | |
76 | ||
77 | #define BTF_DEBUGGING_INFO 1 | |
78 | ||
b25c3a22 JJ |
79 | /* The GNU tools operate better with dwarf2, and it is required by some |
80 | psABI's. Since we don't have any native tools to be compatible with, | |
81 | default to dwarf2. */ | |
d1be3be3 JW |
82 | |
83 | #ifndef PREFERRED_DEBUGGING_TYPE | |
b25c3a22 | 84 | #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG |
d1be3be3 JW |
85 | #endif |
86 | ||
f6cad4c9 NC |
87 | /* All SVR4 targets use the ELF object file format. */ |
88 | #define OBJECT_FORMAT_ELF | |
89 | ||
90 | ||
91 | /* Output #ident as a .ident. */ | |
92 | ||
a8781821 SB |
93 | #undef TARGET_ASM_OUTPUT_IDENT |
94 | #define TARGET_ASM_OUTPUT_IDENT default_asm_output_ident_directive | |
f6cad4c9 | 95 | |
f6cad4c9 | 96 | #undef SET_ASM_OP |
e662a129 | 97 | #define SET_ASM_OP "\t.set\t" |
d1be3be3 | 98 | |
1bc7c5b6 ZW |
99 | /* Most svr4 assemblers want a .file directive at the beginning of |
100 | their input file. */ | |
720b7001 | 101 | #define TARGET_ASM_FILE_START_FILE_DIRECTIVE true |
d1be3be3 JW |
102 | |
103 | /* This is how to allocate empty space in some section. The .zero | |
104 | pseudo-op is used for this on most svr4 assemblers. */ | |
105 | ||
e662a129 | 106 | #define SKIP_ASM_OP "\t.zero\t" |
d1be3be3 | 107 | |
f6cad4c9 NC |
108 | #undef ASM_OUTPUT_SKIP |
109 | #define ASM_OUTPUT_SKIP(FILE, SIZE) \ | |
16998094 | 110 | fprintf ((FILE), "%s" HOST_WIDE_INT_PRINT_UNSIGNED "\n",\ |
58e15542 | 111 | SKIP_ASM_OP, (SIZE)) |
d1be3be3 | 112 | |
d1be3be3 JW |
113 | /* This is how to store into the string LABEL |
114 | the symbol_ref name of an internal numbered label where | |
115 | PREFIX is the class of label and NUM is the number within the class. | |
116 | This is suitable for output with `assemble_name'. | |
117 | ||
118 | For most svr4 systems, the convention is that any symbol which begins | |
119 | with a period is not put into the linker symbol table by the assembler. */ | |
120 | ||
f6cad4c9 NC |
121 | #undef ASM_GENERATE_INTERNAL_LABEL |
122 | #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \ | |
123 | do \ | |
124 | { \ | |
5e3929ed DA |
125 | char *__p; \ |
126 | (LABEL)[0] = '*'; \ | |
127 | (LABEL)[1] = '.'; \ | |
128 | __p = stpcpy (&(LABEL)[2], PREFIX); \ | |
129 | sprint_ul (__p, (unsigned long) (NUM)); \ | |
f6cad4c9 NC |
130 | } \ |
131 | while (0) | |
d1be3be3 JW |
132 | |
133 | /* Output the label which precedes a jumptable. Note that for all svr4 | |
134 | systems where we actually generate jumptables (which is to say every | |
135 | svr4 target except i386, where we use casesi instead) we put the jump- | |
136 | tables into the .rodata section and since other stuff could have been | |
137 | put into the .rodata section prior to any given jumptable, we have to | |
138 | make sure that the location counter for the .rodata section gets pro- | |
139 | perly re-aligned prior to the actual beginning of the jump table. */ | |
140 | ||
e59f7d3d | 141 | #undef ALIGN_ASM_OP |
e662a129 | 142 | #define ALIGN_ASM_OP "\t.align\t" |
d1be3be3 JW |
143 | |
144 | #ifndef ASM_OUTPUT_BEFORE_CASE_LABEL | |
f6cad4c9 | 145 | #define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE, PREFIX, NUM, TABLE) \ |
9739c3d3 | 146 | ASM_OUTPUT_ALIGN ((FILE), 2) |
d1be3be3 JW |
147 | #endif |
148 | ||
f6cad4c9 NC |
149 | #undef ASM_OUTPUT_CASE_LABEL |
150 | #define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, JUMPTABLE) \ | |
151 | do \ | |
152 | { \ | |
9739c3d3 TV |
153 | ASM_OUTPUT_BEFORE_CASE_LABEL (FILE, PREFIX, NUM, JUMPTABLE); \ |
154 | (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM); \ | |
f6cad4c9 NC |
155 | } \ |
156 | while (0) | |
d1be3be3 JW |
157 | |
158 | /* The standard SVR4 assembler seems to require that certain builtin | |
159 | library routines (e.g. .udiv) be explicitly declared as .globl | |
160 | in each assembly file where they are referenced. */ | |
161 | ||
f6cad4c9 | 162 | #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \ |
5eb99654 | 163 | (*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0)) |
d1be3be3 JW |
164 | |
165 | /* This says how to output assembler code to declare an | |
166 | uninitialized external linkage data object. Under SVR4, | |
167 | the linker seems to want the alignment of data objects | |
168 | to depend on their types. We do exactly that here. */ | |
169 | ||
e662a129 | 170 | #define COMMON_ASM_OP "\t.comm\t" |
d1be3be3 | 171 | |
f6cad4c9 | 172 | #undef ASM_OUTPUT_ALIGNED_COMMON |
d1be3be3 | 173 | #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \ |
f6cad4c9 NC |
174 | do \ |
175 | { \ | |
ca13100a | 176 | fprintf ((FILE), "%s", COMMON_ASM_OP); \ |
f6cad4c9 | 177 | assemble_name ((FILE), (NAME)); \ |
16998094 | 178 | fprintf ((FILE), "," HOST_WIDE_INT_PRINT_UNSIGNED ",%u\n", \ |
58e15542 | 179 | (SIZE), (ALIGN) / BITS_PER_UNIT); \ |
f6cad4c9 NC |
180 | } \ |
181 | while (0) | |
d1be3be3 JW |
182 | |
183 | /* This says how to output assembler code to declare an | |
184 | uninitialized internal linkage data object. Under SVR4, | |
185 | the linker seems to want the alignment of data objects | |
186 | to depend on their types. We do exactly that here. */ | |
187 | ||
e662a129 | 188 | #define LOCAL_ASM_OP "\t.local\t" |
d1be3be3 | 189 | |
f6cad4c9 NC |
190 | #undef ASM_OUTPUT_ALIGNED_LOCAL |
191 | #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \ | |
192 | do \ | |
193 | { \ | |
ca13100a | 194 | fprintf ((FILE), "%s", LOCAL_ASM_OP); \ |
f6cad4c9 NC |
195 | assemble_name ((FILE), (NAME)); \ |
196 | fprintf ((FILE), "\n"); \ | |
197 | ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \ | |
198 | } \ | |
199 | while (0) | |
d1be3be3 | 200 | |
d1be3be3 JW |
201 | /* This is the pseudo-op used to generate a contiguous sequence of byte |
202 | values from a double-quoted string WITHOUT HAVING A TERMINATING NUL | |
203 | AUTOMATICALLY APPENDED. This is the same for most svr4 assemblers. */ | |
204 | ||
f6cad4c9 | 205 | #undef ASCII_DATA_ASM_OP |
e662a129 | 206 | #define ASCII_DATA_ASM_OP "\t.ascii\t" |
d1be3be3 | 207 | |
d48bc59a RH |
208 | /* Support a read-only data section. */ |
209 | #define READONLY_DATA_SECTION_ASM_OP "\t.section\t.rodata" | |
d1be3be3 | 210 | |
d1be3be3 JW |
211 | /* On svr4, we *do* have support for the .init and .fini sections, and we |
212 | can put stuff in there to be executed before and after `main'. We let | |
213 | crtstuff.c and other files know this by defining the following symbols. | |
214 | The definitions say how to change sections to the .init and .fini | |
215 | sections. This is the same for all known svr4 assemblers. */ | |
216 | ||
f6cad4c9 NC |
217 | #define INIT_SECTION_ASM_OP "\t.section\t.init" |
218 | #define FINI_SECTION_ASM_OP "\t.section\t.fini" | |
d1be3be3 | 219 | |
201556f0 | 220 | /* Output assembly directive to move to the beginning of current section. */ |
d48bc59a RH |
221 | #ifdef HAVE_GAS_SUBSECTION_ORDERING |
222 | # define ASM_SECTION_START_OP "\t.subsection\t-1" | |
223 | # define ASM_OUTPUT_SECTION_START(FILE) \ | |
201556f0 | 224 | fprintf ((FILE), "%s\n", ASM_SECTION_START_OP) |
201556f0 JJ |
225 | #endif |
226 | ||
07b12652 | 227 | #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1) |
35d8c8e2 | 228 | |
7c262518 RH |
229 | /* Switch into a generic section. */ |
230 | #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section | |
d1be3be3 | 231 | |
b64a1b53 RH |
232 | #undef TARGET_ASM_SELECT_RTX_SECTION |
233 | #define TARGET_ASM_SELECT_RTX_SECTION default_elf_select_rtx_section | |
ae46c4e0 RH |
234 | #undef TARGET_ASM_SELECT_SECTION |
235 | #define TARGET_ASM_SELECT_SECTION default_elf_select_section | |
434aeebb RS |
236 | #undef TARGET_HAVE_SWITCHABLE_BSS_SECTIONS |
237 | #define TARGET_HAVE_SWITCHABLE_BSS_SECTIONS true | |
d1be3be3 JW |
238 | |
239 | /* Define the strings used for the special svr4 .type and .size directives. | |
240 | These strings generally do not vary from one system running svr4 to | |
241 | another, but if a given system (e.g. m88k running svr) needs to use | |
242 | different pseudo-op names for these, they may be overridden in the | |
243 | file which includes this one. */ | |
244 | ||
e662a129 HPN |
245 | #define TYPE_ASM_OP "\t.type\t" |
246 | #define SIZE_ASM_OP "\t.size\t" | |
d1be3be3 JW |
247 | |
248 | /* This is how we tell the assembler that a symbol is weak. */ | |
249 | ||
35d8c8e2 | 250 | #define ASM_WEAKEN_LABEL(FILE, NAME) \ |
f6cad4c9 NC |
251 | do \ |
252 | { \ | |
253 | fputs ("\t.weak\t", (FILE)); \ | |
35d8c8e2 | 254 | assemble_name ((FILE), (NAME)); \ |
f6cad4c9 NC |
255 | fputc ('\n', (FILE)); \ |
256 | } \ | |
257 | while (0) | |
d1be3be3 | 258 | |
d7ddfbcb JH |
259 | #define ASM_OUTPUT_SYMVER_DIRECTIVE(FILE, NAME, NAME2) \ |
260 | do \ | |
261 | { \ | |
262 | fputs ("\t.symver\t", (FILE)); \ | |
263 | assemble_name ((FILE), (NAME)); \ | |
264 | fputs (", ", (FILE)); \ | |
265 | assemble_name ((FILE), (NAME2)); \ | |
266 | fputc ('\n', (FILE)); \ | |
267 | } \ | |
268 | while (0) | |
269 | ||
d1be3be3 JW |
270 | /* The following macro defines the format used to output the second |
271 | operand of the .type assembler directive. Different svr4 assemblers | |
272 | expect various different forms for this operand. The one given here | |
273 | is just a default. You may need to override it in your machine- | |
274 | specific tm.h file (depending upon the particulars of your assembler). */ | |
275 | ||
276 | #define TYPE_OPERAND_FMT "@%s" | |
277 | ||
278 | /* Write the extra assembler code needed to declare a function's result. | |
279 | Most svr4 assemblers don't require any special declaration of the | |
280 | result value, but there are exceptions. */ | |
281 | ||
282 | #ifndef ASM_DECLARE_RESULT | |
283 | #define ASM_DECLARE_RESULT(FILE, RESULT) | |
284 | #endif | |
285 | ||
286 | /* These macros generate the special .type and .size directives which | |
287 | are used to set the corresponding fields of the linker symbol table | |
288 | entries in an ELF object file under SVR4. These macros also output | |
289 | the starting labels for the relevant functions/objects. */ | |
290 | ||
291 | /* Write the extra assembler code needed to declare a function properly. | |
292 | Some svr4 assemblers need to also have something extra said about the | |
293 | function's return value. We allow for that here. */ | |
294 | ||
8d170590 | 295 | #ifndef ASM_DECLARE_FUNCTION_NAME |
2be2ac70 ZW |
296 | #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ |
297 | do \ | |
298 | { \ | |
299 | ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \ | |
300 | ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \ | |
135a687e | 301 | ASM_OUTPUT_FUNCTION_LABEL (FILE, NAME, DECL); \ |
2be2ac70 | 302 | } \ |
f6cad4c9 | 303 | while (0) |
8d170590 | 304 | #endif |
f6cad4c9 | 305 | |
11c3d071 CT |
306 | /* Write the extra assembler code needed to declare the name of a |
307 | cold function partition properly. Some svr4 assemblers need to also | |
308 | have something extra said about the function's return value. We | |
309 | allow for that here. */ | |
310 | ||
311 | #ifndef ASM_DECLARE_COLD_FUNCTION_NAME | |
312 | #define ASM_DECLARE_COLD_FUNCTION_NAME(FILE, NAME, DECL) \ | |
313 | do \ | |
314 | { \ | |
315 | ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \ | |
316 | ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \ | |
317 | ASM_OUTPUT_FUNCTION_LABEL (FILE, NAME, DECL); \ | |
318 | } \ | |
319 | while (0) | |
320 | #endif | |
321 | ||
d1be3be3 JW |
322 | /* Write the extra assembler code needed to declare an object properly. */ |
323 | ||
e31bcd1b | 324 | #ifdef HAVE_GAS_GNU_UNIQUE_OBJECT |
da34ade5 | 325 | #define USE_GNU_UNIQUE_OBJECT flag_gnu_unique |
e31bcd1b JM |
326 | #else |
327 | #define USE_GNU_UNIQUE_OBJECT 0 | |
328 | #endif | |
329 | ||
330 | #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \ | |
331 | do \ | |
332 | { \ | |
333 | HOST_WIDE_INT size; \ | |
334 | \ | |
335 | /* For template static data member instantiations or \ | |
3895ec53 JJ |
336 | inline fn local statics and their guard variables, use \ |
337 | gnu_unique_object so that they will be combined even under \ | |
338 | RTLD_LOCAL. Don't use gnu_unique_object for typeinfo, \ | |
339 | vtables and other read-only artificial decls. */ \ | |
340 | if (USE_GNU_UNIQUE_OBJECT && DECL_ONE_ONLY (DECL) \ | |
341 | && (!DECL_ARTIFICIAL (DECL) || !TREE_READONLY (DECL))) \ | |
e31bcd1b JM |
342 | ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "gnu_unique_object"); \ |
343 | else \ | |
344 | ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \ | |
345 | \ | |
346 | size_directive_output = 0; \ | |
347 | if (!flag_inhibit_size_directive \ | |
348 | && (DECL) && DECL_SIZE (DECL)) \ | |
349 | { \ | |
350 | size_directive_output = 1; \ | |
ce597aed | 351 | size = tree_to_uhwi (DECL_SIZE_UNIT (DECL)); \ |
e31bcd1b JM |
352 | ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size); \ |
353 | } \ | |
354 | \ | |
355 | ASM_OUTPUT_LABEL (FILE, NAME); \ | |
356 | } \ | |
f6cad4c9 | 357 | while (0) |
d1be3be3 JW |
358 | |
359 | /* Output the size directive for a decl in rest_of_decl_compilation | |
360 | in the case where we did not do so before the initializer. | |
361 | Once we find the error_mark_node, we know that the value of | |
362 | size_directive_output was set | |
363 | by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */ | |
364 | ||
35d8c8e2 | 365 | #undef ASM_FINISH_DECLARE_OBJECT |
f6cad4c9 NC |
366 | #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)\ |
367 | do \ | |
368 | { \ | |
369 | const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \ | |
2be2ac70 | 370 | HOST_WIDE_INT size; \ |
35d8c8e2 | 371 | \ |
f6cad4c9 NC |
372 | if (!flag_inhibit_size_directive \ |
373 | && DECL_SIZE (DECL) \ | |
374 | && ! AT_END && TOP_LEVEL \ | |
375 | && DECL_INITIAL (DECL) == error_mark_node \ | |
376 | && !size_directive_output) \ | |
377 | { \ | |
378 | size_directive_output = 1; \ | |
ce597aed | 379 | size = tree_to_uhwi (DECL_SIZE_UNIT (DECL)); \ |
2be2ac70 | 380 | ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size); \ |
f6cad4c9 NC |
381 | } \ |
382 | } \ | |
383 | while (0) | |
d1be3be3 JW |
384 | |
385 | /* This is how to declare the size of a function. */ | |
8d170590 | 386 | #ifndef ASM_DECLARE_FUNCTION_SIZE |
f6cad4c9 NC |
387 | #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \ |
388 | do \ | |
389 | { \ | |
390 | if (!flag_inhibit_size_directive) \ | |
99086d59 | 391 | ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME); \ |
f6cad4c9 NC |
392 | } \ |
393 | while (0) | |
8d170590 | 394 | #endif |
d1be3be3 | 395 | |
11c3d071 CT |
396 | /* This is how to declare the size of a cold function partition. */ |
397 | #ifndef ASM_DECLARE_COLD_FUNCTION_SIZE | |
398 | #define ASM_DECLARE_COLD_FUNCTION_SIZE(FILE, FNAME, DECL) \ | |
399 | do \ | |
400 | { \ | |
401 | if (!flag_inhibit_size_directive) \ | |
402 | ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME); \ | |
403 | } \ | |
404 | while (0) | |
405 | #endif | |
406 | ||
d1be3be3 JW |
407 | /* A table of bytes codes used by the ASM_OUTPUT_ASCII and |
408 | ASM_OUTPUT_LIMITED_STRING macros. Each byte in the table | |
409 | corresponds to a particular byte value [0..255]. For any | |
410 | given byte value, if the value in the corresponding table | |
411 | position is zero, the given character can be output directly. | |
412 | If the table value is 1, the byte must be output as a \ooo | |
413 | octal escape. If the tables value is anything else, then the | |
414 | byte value should be output as a \ followed by the value | |
415 | in the table. Note that we can use standard UN*X escape | |
416 | sequences for many control characters, but we don't use | |
417 | \a to represent BEL because some svr4 assemblers (e.g. on | |
418 | the i386) don't know about that. Also, we don't use \v | |
419 | since some versions of gas, such as 2.2 did not accept it. */ | |
420 | ||
5e3929ed | 421 | #define ELF_ASCII_ESCAPES \ |
d1be3be3 JW |
422 | "\1\1\1\1\1\1\1\1btn\1fr\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\ |
423 | \0\0\"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\ | |
424 | \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\\\0\0\0\ | |
425 | \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1\ | |
426 | \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\ | |
427 | \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\ | |
428 | \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\ | |
429 | \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1" | |
430 | ||
431 | /* Some svr4 assemblers have a limit on the number of characters which | |
432 | can appear in the operand of a .string directive. If your assembler | |
433 | has such a limitation, you should define STRING_LIMIT to reflect that | |
434 | limit. Note that at least some svr4 assemblers have a limit on the | |
435 | actual number of bytes in the double-quoted string, and that they | |
436 | count each character in an escape sequence as one byte. Thus, an | |
437 | escape sequence like \377 would count as four bytes. | |
438 | ||
439 | If your target assembler doesn't support the .string directive, you | |
440 | should define this to zero. | |
441 | */ | |
442 | ||
5e3929ed | 443 | #define ELF_STRING_LIMIT ((unsigned) 256) |
d1be3be3 | 444 | |
c9febe15 DA |
445 | #define STRING_ASM_OP "\t.string\t" |
446 | ||
d1be3be3 JW |
447 | /* The routine used to output NUL terminated strings. We use a special |
448 | version of this for most svr4 targets because doing so makes the | |
449 | generated assembly code more compact (and thus faster to assemble) | |
450 | as well as more readable, especially for targets like the i386 | |
451 | (where the only alternative is to output character sequences as | |
991b6592 | 452 | comma separated lists of numbers). */ |
d1be3be3 | 453 | |
f6cad4c9 | 454 | #define ASM_OUTPUT_LIMITED_STRING(FILE, STR) \ |
5e3929ed | 455 | default_elf_asm_output_limited_string ((FILE), (STR)) |
d1be3be3 JW |
456 | |
457 | /* The routine used to output sequences of byte values. We use a special | |
458 | version of this for most svr4 targets because doing so makes the | |
459 | generated assembly code more compact (and thus faster to assemble) | |
460 | as well as more readable. Note that if we find subparts of the | |
461 | character sequence which end with NUL (and which are shorter than | |
462 | STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING. */ | |
463 | ||
f6cad4c9 | 464 | #undef ASM_OUTPUT_ASCII |
5e3929ed | 465 | #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \ |
180b5580 | 466 | default_elf_asm_output_ascii ((FILE), (STR), (LENGTH)) |
f4ab8916 NC |
467 | |
468 | /* Allow the use of the -frecord-gcc-switches switch via the | |
e53b6e56 | 469 | elf_record_gcc_switches function defined in varasm.cc. */ |
f4ab8916 NC |
470 | #undef TARGET_ASM_RECORD_GCC_SWITCHES |
471 | #define TARGET_ASM_RECORD_GCC_SWITCHES elf_record_gcc_switches | |
c47c29c8 L |
472 | |
473 | /* A C statement (sans semicolon) to output to the stdio stream STREAM | |
474 | any text necessary for declaring the name of an external symbol | |
24fc18b9 | 475 | named NAME which is referenced in this compilation but not defined. |
c47c29c8 L |
476 | It is needed to properly support non-default visibility. */ |
477 | ||
478 | #ifndef ASM_OUTPUT_EXTERNAL | |
479 | #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \ | |
480 | default_elf_asm_output_external (FILE, DECL, NAME) | |
481 | #endif | |
d33d9e47 AI |
482 | |
483 | #undef TARGET_LIBC_HAS_FUNCTION | |
484 | #define TARGET_LIBC_HAS_FUNCTION no_c99_libc_has_function |