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1 | /* Definitions of target machine for GNU compiler, for DEC Alpha w/ELF. | |
2 | Copyright (C) 1996 Free Software Foundation, Inc. | |
3 | Contributed by Richard Henderson (rth@tamu.edu). | |
4 | ||
5 | This file is part of GNU CC. | |
6 | ||
7 | GNU CC is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU CC is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU CC; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | /* This is used on Alpha platforms that use the ELF format. | |
23 | Currently only Linux uses this. */ | |
24 | ||
25 | #undef TARGET_VERSION | |
26 | #define TARGET_VERSION fprintf (stderr, " (Alpha Linux/ELF)"); | |
27 | ||
28 | #undef OBJECT_FORMAT_COFF | |
29 | #undef EXTENDED_COFF | |
30 | #define OBJECT_FORMAT_ELF | |
31 | ||
32 | #define SDB_DEBUGGING_INFO | |
33 | ||
34 | #undef ASM_FINAL_SPEC | |
35 | ||
36 | #undef CPP_PREDEFINES | |
37 | #define CPP_PREDEFINES "\ | |
38 | -D__alpha -D__alpha__ -D__linux__ -D__linux -D_LONGLONG -Dlinux -Dunix \ | |
39 | -Asystem(linux) -Acpu(alpha) -Amachine(alpha) -D__ELF__" | |
40 | ||
41 | #undef LINK_SPEC | |
42 | #define LINK_SPEC "-m elf64alpha -G 8 %{O*:-O3} %{!O*:-O1} \ | |
43 | %{shared:-shared} \ | |
44 | %{!shared: \ | |
45 | %{!static: \ | |
46 | %{rdynamic:-export-dynamic} \ | |
47 | %{!dynamic-linker:-dynamic-linker /lib/ld-gnu.so.1}} \ | |
48 | %{static:-static}}" | |
49 | ||
50 | /* Output at beginning of assembler file. */ | |
51 | ||
52 | #undef ASM_FILE_START | |
53 | #define ASM_FILE_START(FILE) \ | |
54 | { \ | |
55 | alpha_write_verstamp (FILE); \ | |
56 | output_file_directive (FILE, main_input_filename); \ | |
57 | fprintf (FILE, "\t.version\t\"01.01\"\n"); \ | |
58 | fprintf (FILE, "\t.set noat\n"); \ | |
59 | } | |
60 | ||
61 | #define ASM_OUTPUT_SOURCE_LINE(STREAM, LINE) \ | |
62 | alpha_output_lineno (STREAM, LINE) | |
63 | extern void alpha_output_lineno (); | |
64 | ||
65 | extern void output_file_directive (); | |
66 | ||
67 | /* Attach a special .ident directive to the end of the file to identify | |
68 | the version of GCC which compiled this code. The format of the | |
69 | .ident string is patterned after the ones produced by native svr4 | |
70 | C compilers. */ | |
71 | ||
72 | #define IDENT_ASM_OP ".ident" | |
73 | ||
74 | #ifdef IDENTIFY_WITH_IDENT | |
75 | #define ASM_IDENTIFY_GCC(FILE) /* nothing */ | |
76 | #define ASM_IDENTIFY_LANGUAGE(FILE) \ | |
77 | fprintf(FILE, "\t%s \"GCC (%s) %s\"\n", IDENT_ASM_OP, \ | |
78 | lang_identify(), version_string) | |
79 | #else | |
80 | #define ASM_FILE_END(FILE) \ | |
81 | do { \ | |
82 | fprintf ((FILE), "\t%s\t\"GCC: (GNU) %s\"\n", \ | |
83 | IDENT_ASM_OP, version_string); \ | |
84 | } while (0) | |
85 | #endif | |
86 | ||
87 | /* Allow #sccs in preprocessor. */ | |
88 | ||
89 | #define SCCS_DIRECTIVE | |
90 | ||
91 | /* Output #ident as a .ident. */ | |
92 | ||
93 | #define ASM_OUTPUT_IDENT(FILE, NAME) \ | |
94 | fprintf (FILE, "\t%s\t\"%s\"\n", IDENT_ASM_OP, NAME); | |
95 | ||
96 | /* This is how to allocate empty space in some section. The .zero | |
97 | pseudo-op is used for this on most svr4 assemblers. */ | |
98 | ||
99 | #define SKIP_ASM_OP ".zero" | |
100 | ||
101 | #undef ASM_OUTPUT_SKIP | |
102 | #define ASM_OUTPUT_SKIP(FILE,SIZE) \ | |
103 | fprintf (FILE, "\t%s\t%u\n", SKIP_ASM_OP, (SIZE)) | |
104 | ||
105 | /* Output the label which precedes a jumptable. Note that for all svr4 | |
106 | systems where we actually generate jumptables (which is to say every | |
107 | svr4 target except i386, where we use casesi instead) we put the jump- | |
108 | tables into the .rodata section and since other stuff could have been | |
109 | put into the .rodata section prior to any given jumptable, we have to | |
110 | make sure that the location counter for the .rodata section gets pro- | |
111 | perly re-aligned prior to the actual beginning of the jump table. */ | |
112 | ||
113 | #define ALIGN_ASM_OP ".align" | |
114 | ||
115 | #ifndef ASM_OUTPUT_BEFORE_CASE_LABEL | |
116 | #define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \ | |
117 | ASM_OUTPUT_ALIGN ((FILE), 2); | |
118 | #endif | |
119 | ||
120 | #undef ASM_OUTPUT_CASE_LABEL | |
121 | #define ASM_OUTPUT_CASE_LABEL(FILE,PREFIX,NUM,JUMPTABLE) \ | |
122 | do { \ | |
123 | ASM_OUTPUT_BEFORE_CASE_LABEL (FILE, PREFIX, NUM, JUMPTABLE) \ | |
124 | ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM); \ | |
125 | } while (0) | |
126 | ||
127 | /* The standard SVR4 assembler seems to require that certain builtin | |
128 | library routines (e.g. .udiv) be explicitly declared as .globl | |
129 | in each assembly file where they are referenced. */ | |
130 | ||
131 | #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \ | |
132 | ASM_GLOBALIZE_LABEL (FILE, XSTR (FUN, 0)) | |
133 | ||
134 | /* This says how to output assembler code to declare an | |
135 | uninitialized external linkage data object. Under SVR4, | |
136 | the linker seems to want the alignment of data objects | |
137 | to depend on their types. We do exactly that here. */ | |
138 | ||
139 | #define COMMON_ASM_OP ".comm" | |
140 | ||
141 | #undef ASM_OUTPUT_ALIGNED_COMMON | |
142 | #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \ | |
143 | do { \ | |
144 | fprintf ((FILE), "\t%s\t", COMMON_ASM_OP); \ | |
145 | assemble_name ((FILE), (NAME)); \ | |
146 | fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT); \ | |
147 | } while (0) | |
148 | ||
149 | /* This says how to output assembler code to declare an | |
150 | uninitialized internal linkage data object. Under SVR4, | |
151 | the linker seems to want the alignment of data objects | |
152 | to depend on their types. We do exactly that here. */ | |
153 | ||
154 | #define LOCAL_ASM_OP ".local" | |
155 | ||
156 | #undef ASM_OUTPUT_ALIGNED_LOCAL | |
157 | #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \ | |
158 | do { \ | |
159 | fprintf ((FILE), "\t%s\t", LOCAL_ASM_OP); \ | |
160 | assemble_name ((FILE), (NAME)); \ | |
161 | fprintf ((FILE), "\n"); \ | |
162 | ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \ | |
163 | } while (0) | |
164 | ||
165 | /* This is the pseudo-op used to generate a 64-bit word of data with a | |
166 | specific value in some section. */ | |
167 | ||
168 | #define INT_ASM_OP ".quad" | |
169 | ||
170 | /* This is the pseudo-op used to generate a contiguous sequence of byte | |
171 | values from a double-quoted string WITHOUT HAVING A TERMINATING NUL | |
172 | AUTOMATICALLY APPENDED. This is the same for most svr4 assemblers. */ | |
173 | ||
174 | #undef ASCII_DATA_ASM_OP | |
175 | #define ASCII_DATA_ASM_OP ".ascii" | |
176 | ||
177 | /* Support const sections and the ctors and dtors sections for g++. | |
178 | Note that there appears to be two different ways to support const | |
179 | sections at the moment. You can either #define the symbol | |
180 | READONLY_DATA_SECTION (giving it some code which switches to the | |
181 | readonly data section) or else you can #define the symbols | |
182 | EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and | |
183 | SELECT_RTX_SECTION. We do both here just to be on the safe side. */ | |
184 | ||
185 | #define USE_CONST_SECTION 1 | |
186 | ||
187 | #define CONST_SECTION_ASM_OP ".section\t.rodata" | |
188 | ||
189 | /* Define the pseudo-ops used to switch to the .ctors and .dtors sections. | |
190 | ||
191 | Note that we want to give these sections the SHF_WRITE attribute | |
192 | because these sections will actually contain data (i.e. tables of | |
193 | addresses of functions in the current root executable or shared library | |
194 | file) and, in the case of a shared library, the relocatable addresses | |
195 | will have to be properly resolved/relocated (and then written into) by | |
196 | the dynamic linker when it actually attaches the given shared library | |
197 | to the executing process. (Note that on SVR4, you may wish to use the | |
198 | `-z text' option to the ELF linker, when building a shared library, as | |
199 | an additional check that you are doing everything right. But if you do | |
200 | use the `-z text' option when building a shared library, you will get | |
201 | errors unless the .ctors and .dtors sections are marked as writable | |
202 | via the SHF_WRITE attribute.) */ | |
203 | ||
204 | #define CTORS_SECTION_ASM_OP ".section\t.ctors,\"aw\"" | |
205 | #define DTORS_SECTION_ASM_OP ".section\t.dtors,\"aw\"" | |
206 | ||
207 | /* On svr4, we *do* have support for the .init and .fini sections, and we | |
208 | can put stuff in there to be executed before and after `main'. We let | |
209 | crtstuff.c and other files know this by defining the following symbols. | |
210 | The definitions say how to change sections to the .init and .fini | |
211 | sections. This is the same for all known svr4 assemblers. */ | |
212 | ||
213 | #define INIT_SECTION_ASM_OP ".section\t.init" | |
214 | #define FINI_SECTION_ASM_OP ".section\t.fini" | |
215 | ||
216 | /* A default list of other sections which we might be "in" at any given | |
217 | time. For targets that use additional sections (e.g. .tdesc) you | |
218 | should override this definition in the target-specific file which | |
219 | includes this file. */ | |
220 | ||
221 | #undef EXTRA_SECTIONS | |
222 | #define EXTRA_SECTIONS in_const, in_ctors, in_dtors | |
223 | ||
224 | /* A default list of extra section function definitions. For targets | |
225 | that use additional sections (e.g. .tdesc) you should override this | |
226 | definition in the target-specific file which includes this file. */ | |
227 | ||
228 | #undef EXTRA_SECTION_FUNCTIONS | |
229 | #define EXTRA_SECTION_FUNCTIONS \ | |
230 | CONST_SECTION_FUNCTION \ | |
231 | CTORS_SECTION_FUNCTION \ | |
232 | DTORS_SECTION_FUNCTION | |
233 | ||
234 | #undef READONLY_DATA_SECTION | |
235 | #define READONLY_DATA_SECTION() const_section () | |
236 | ||
237 | extern void text_section (); | |
238 | ||
239 | #define CONST_SECTION_FUNCTION \ | |
240 | void \ | |
241 | const_section () \ | |
242 | { \ | |
243 | if (!USE_CONST_SECTION) \ | |
244 | text_section(); \ | |
245 | else if (in_section != in_const) \ | |
246 | { \ | |
247 | fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP); \ | |
248 | in_section = in_const; \ | |
249 | } \ | |
250 | } | |
251 | ||
252 | #define CTORS_SECTION_FUNCTION \ | |
253 | void \ | |
254 | ctors_section () \ | |
255 | { \ | |
256 | if (in_section != in_ctors) \ | |
257 | { \ | |
258 | fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \ | |
259 | in_section = in_ctors; \ | |
260 | } \ | |
261 | } | |
262 | ||
263 | #define DTORS_SECTION_FUNCTION \ | |
264 | void \ | |
265 | dtors_section () \ | |
266 | { \ | |
267 | if (in_section != in_dtors) \ | |
268 | { \ | |
269 | fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \ | |
270 | in_section = in_dtors; \ | |
271 | } \ | |
272 | } | |
273 | ||
274 | /* Switch into a generic section. | |
275 | This is currently only used to support section attributes. | |
276 | ||
277 | We make the section read-only and executable for a function decl, | |
278 | read-only for a const data decl, and writable for a non-const data decl. */ | |
279 | #define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME) \ | |
280 | fprintf (FILE, ".section\t%s,\"%s\",@progbits\n", NAME, \ | |
281 | (DECL) && TREE_CODE (DECL) == FUNCTION_DECL ? "ax" : \ | |
282 | (DECL) && TREE_READONLY (DECL) ? "a" : "aw") | |
283 | ||
284 | ||
285 | /* A C statement (sans semicolon) to output an element in the table of | |
286 | global constructors. */ | |
287 | #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \ | |
288 | do { \ | |
289 | ctors_section (); \ | |
290 | fprintf (FILE, "\t%s\t ", INT_ASM_OP); \ | |
291 | assemble_name (FILE, NAME); \ | |
292 | fprintf (FILE, "\n"); \ | |
293 | } while (0) | |
294 | ||
295 | /* A C statement (sans semicolon) to output an element in the table of | |
296 | global destructors. */ | |
297 | #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \ | |
298 | do { \ | |
299 | dtors_section (); \ | |
300 | fprintf (FILE, "\t%s\t ", INT_ASM_OP); \ | |
301 | assemble_name (FILE, NAME); \ | |
302 | fprintf (FILE, "\n"); \ | |
303 | } while (0) | |
304 | ||
305 | /* A C statement or statements to switch to the appropriate | |
306 | section for output of DECL. DECL is either a `VAR_DECL' node | |
307 | or a constant of some sort. RELOC indicates whether forming | |
308 | the initial value of DECL requires link-time relocations. */ | |
309 | ||
310 | #define SELECT_SECTION(DECL,RELOC) \ | |
311 | { \ | |
312 | if (TREE_CODE (DECL) == STRING_CST) \ | |
313 | { \ | |
314 | if (! flag_writable_strings) \ | |
315 | const_section (); \ | |
316 | else \ | |
317 | data_section (); \ | |
318 | } \ | |
319 | else if (TREE_CODE (DECL) == VAR_DECL) \ | |
320 | { \ | |
321 | if ((flag_pic && RELOC) \ | |
322 | || !TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL) \ | |
323 | || !DECL_INITIAL (DECL) \ | |
324 | || (DECL_INITIAL (DECL) != error_mark_node \ | |
325 | && !TREE_CONSTANT (DECL_INITIAL (DECL)))) \ | |
326 | data_section (); \ | |
327 | else \ | |
328 | const_section (); \ | |
329 | } \ | |
330 | else \ | |
331 | const_section (); \ | |
332 | } | |
333 | ||
334 | /* A C statement or statements to switch to the appropriate | |
335 | section for output of RTX in mode MODE. RTX is some kind | |
336 | of constant in RTL. The argument MODE is redundant except | |
337 | in the case of a `const_int' rtx. Currently, these always | |
338 | go into the const section. */ | |
339 | ||
340 | #undef SELECT_RTX_SECTION | |
341 | #define SELECT_RTX_SECTION(MODE,RTX) const_section() | |
342 | ||
343 | /* Define the strings used for the special svr4 .type and .size directives. | |
344 | These strings generally do not vary from one system running svr4 to | |
345 | another, but if a given system (e.g. m88k running svr) needs to use | |
346 | different pseudo-op names for these, they may be overridden in the | |
347 | file which includes this one. */ | |
348 | ||
349 | #define TYPE_ASM_OP ".type" | |
350 | #define SIZE_ASM_OP ".size" | |
351 | ||
352 | /* This is how we tell the assembler that a symbol is weak. */ | |
353 | ||
354 | #define ASM_WEAKEN_LABEL(FILE,NAME) \ | |
355 | do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \ | |
356 | fputc ('\n', FILE); } while (0) | |
357 | ||
358 | /* This is how we tell the assembler that two symbols have the same value. */ | |
359 | ||
360 | #define ASM_OUTPUT_DEF(FILE,NAME1,NAME2) \ | |
361 | do { assemble_name(FILE, NAME1); \ | |
362 | fputs(" = ", FILE); \ | |
363 | assemble_name(FILE, NAME2); \ | |
364 | fputc('\n', FILE); } while (0) | |
365 | ||
366 | /* The following macro defines the format used to output the second | |
367 | operand of the .type assembler directive. Different svr4 assemblers | |
368 | expect various different forms for this operand. The one given here | |
369 | is just a default. You may need to override it in your machine- | |
370 | specific tm.h file (depending upon the particulars of your assembler). */ | |
371 | ||
372 | #define TYPE_OPERAND_FMT "@%s" | |
373 | ||
374 | /* Write the extra assembler code needed to declare a function's result. | |
375 | Most svr4 assemblers don't require any special declaration of the | |
376 | result value, but there are exceptions. */ | |
377 | ||
378 | #ifndef ASM_DECLARE_RESULT | |
379 | #define ASM_DECLARE_RESULT(FILE, RESULT) | |
380 | #endif | |
381 | ||
382 | /* These macros generate the special .type and .size directives which | |
383 | are used to set the corresponding fields of the linker symbol table | |
384 | entries in an ELF object file under SVR4. These macros also output | |
385 | the starting labels for the relevant functions/objects. */ | |
386 | ||
387 | /* Write the extra assembler code needed to declare an object properly. */ | |
388 | ||
389 | #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \ | |
390 | do { \ | |
391 | fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \ | |
392 | assemble_name (FILE, NAME); \ | |
393 | putc (',', FILE); \ | |
394 | fprintf (FILE, TYPE_OPERAND_FMT, "object"); \ | |
395 | putc ('\n', FILE); \ | |
396 | size_directive_output = 0; \ | |
397 | if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \ | |
398 | { \ | |
399 | size_directive_output = 1; \ | |
400 | fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \ | |
401 | assemble_name (FILE, NAME); \ | |
402 | fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \ | |
403 | } \ | |
404 | ASM_OUTPUT_LABEL(FILE, NAME); \ | |
405 | } while (0) | |
406 | ||
407 | /* Output the size directive for a decl in rest_of_decl_compilation | |
408 | in the case where we did not do so before the initializer. | |
409 | Once we find the error_mark_node, we know that the value of | |
410 | size_directive_output was set | |
411 | by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */ | |
412 | ||
413 | #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \ | |
414 | do { \ | |
415 | char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \ | |
416 | if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \ | |
417 | && ! AT_END && TOP_LEVEL \ | |
418 | && DECL_INITIAL (DECL) == error_mark_node \ | |
419 | && !size_directive_output) \ | |
420 | { \ | |
421 | size_directive_output = 1; \ | |
422 | fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \ | |
423 | assemble_name (FILE, name); \ | |
424 | fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \ | |
425 | } \ | |
426 | } while (0) | |
427 | ||
428 | /* A table of bytes codes used by the ASM_OUTPUT_ASCII and | |
429 | ASM_OUTPUT_LIMITED_STRING macros. Each byte in the table | |
430 | corresponds to a particular byte value [0..255]. For any | |
431 | given byte value, if the value in the corresponding table | |
432 | position is zero, the given character can be output directly. | |
433 | If the table value is 1, the byte must be output as a \ooo | |
434 | octal escape. If the tables value is anything else, then the | |
435 | byte value should be output as a \ followed by the value | |
436 | in the table. Note that we can use standard UN*X escape | |
437 | sequences for many control characters, but we don't use | |
438 | \a to represent BEL because some svr4 assemblers (e.g. on | |
439 | the i386) don't know about that. Also, we don't use \v | |
440 | since some versions of gas, such as 2.2 did not accept it. */ | |
441 | ||
442 | #define ESCAPES \ | |
443 | "\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\ | |
444 | \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\ | |
445 | \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\ | |
446 | \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\ | |
447 | \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\ | |
448 | \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\ | |
449 | \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\ | |
450 | \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" | |
451 | ||
452 | /* Some svr4 assemblers have a limit on the number of characters which | |
453 | can appear in the operand of a .string directive. If your assembler | |
454 | has such a limitation, you should define STRING_LIMIT to reflect that | |
455 | limit. Note that at least some svr4 assemblers have a limit on the | |
456 | actual number of bytes in the double-quoted string, and that they | |
457 | count each character in an escape sequence as one byte. Thus, an | |
458 | escape sequence like \377 would count as four bytes. | |
459 | ||
460 | If your target assembler doesn't support the .string directive, you | |
461 | should define this to zero. | |
462 | */ | |
463 | ||
464 | #define STRING_LIMIT ((unsigned) 256) | |
465 | ||
466 | #define STRING_ASM_OP ".string" | |
467 | ||
468 | /* | |
469 | * We always use gas here, so we don't worry about ECOFF assembler problems. | |
470 | */ | |
471 | #undef TARGET_GAS | |
472 | #define TARGET_GAS (1) | |
473 | ||
474 | #undef PREFERRED_DEBUGGING_TYPE | |
475 | #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG | |
476 | ||
477 | /* Provide a STARTFILE_SPEC appropriate for Linux. Here we add | |
478 | the Linux magical crtbegin.o file (see crtstuff.c) which | |
479 | provides part of the support for getting C++ file-scope static | |
480 | object constructed before entering `main'. */ | |
481 | ||
482 | #undef STARTFILE_SPEC | |
483 | #define STARTFILE_SPEC \ | |
484 | "%{!shared: \ | |
485 | %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\ | |
486 | crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}" | |
487 | ||
488 | /* Provide a ENDFILE_SPEC appropriate for Linux. Here we tack on | |
489 | the Linux magical crtend.o file (see crtstuff.c) which | |
490 | provides part of the support for getting C++ file-scope static | |
491 | object constructed before entering `main', followed by a normal | |
492 | Linux "finalizer" file, `crtn.o'. */ | |
493 | ||
494 | #undef ENDFILE_SPEC | |
495 | #define ENDFILE_SPEC \ | |
496 | "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s" |