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push bf834a7eef2241618d351018da1587a7ae2466d1
[wine/hacks.git] / tools / winebuild / spec32.c
blob583c422c566abb64a53bba36d87c40a310f22f07
1 /*
2 * 32-bit spec files
3 *
4 * Copyright 1993 Robert J. Amstadt
5 * Copyright 1995 Martin von Loewis
6 * Copyright 1995, 1996, 1997 Alexandre Julliard
7 * Copyright 1997 Eric Youngdale
8 * Copyright 1999 Ulrich Weigand
9 *
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
23 */
24
25 #include "config.h"
26 #include "wine/port.h"
27
28 #include <assert.h>
29 #include <ctype.h>
30 #include <stdarg.h>
31 #include <string.h>
32
33 #include "windef.h"
34 #include "winbase.h"
35 #include "wine/exception.h"
36 #include "build.h"
37
38
39 /* check if entry point needs a relay thunk */
40 static inline int needs_relay( const ORDDEF *odp )
41 {
42 /* skip nonexistent entry points */
43 if (!odp) return 0;
44 /* skip non-functions */
45 if ((odp->type != TYPE_STDCALL) && (odp->type != TYPE_CDECL)) return 0;
46 /* skip norelay and forward entry points */
47 if (odp->flags & (FLAG_NORELAY|FLAG_FORWARD)) return 0;
48 return 1;
49 }
50
51 /* check if dll will output relay thunks */
52 int has_relays( DLLSPEC *spec )
53 {
54 int i;
55
56 if (target_cpu != CPU_x86 && target_cpu != CPU_x86_64) return 0;
57
58 for (i = spec->base; i <= spec->limit; i++)
59 {
60 ORDDEF *odp = spec->ordinals[i];
61 if (needs_relay( odp )) return 1;
62 }
63 return 0;
64 }
65
66 /*******************************************************************
67 * output_relay_debug
68 *
69 * Output entry points for relay debugging
70 */
71 static void output_relay_debug( DLLSPEC *spec )
72 {
73 int i;
74 unsigned int j, args, flags;
75
76 /* first the table of entry point offsets */
77
78 output( "\t%s\n", get_asm_rodata_section() );
79 output( "\t.align %d\n", get_alignment(4) );
80 output( ".L__wine_spec_relay_entry_point_offsets:\n" );
81
82 for (i = spec->base; i <= spec->limit; i++)
83 {
84 ORDDEF *odp = spec->ordinals[i];
85
86 if (needs_relay( odp ))
87 output( "\t.long .L__wine_spec_relay_entry_point_%d-__wine_spec_relay_entry_points\n", i );
88 else
89 output( "\t.long 0\n" );
90 }
91
92 /* then the table of argument types */
93
94 output( "\t.align %d\n", get_alignment(4) );
95 output( ".L__wine_spec_relay_arg_types:\n" );
96
97 for (i = spec->base; i <= spec->limit; i++)
98 {
99 ORDDEF *odp = spec->ordinals[i];
100 unsigned int mask = 0;
101
102 if (needs_relay( odp ))
103 {
104 for (j = 0; j < 16 && odp->u.func.arg_types[j]; j++)
105 {
106 if (odp->u.func.arg_types[j] == 't') mask |= 1<< (j*2);
107 if (odp->u.func.arg_types[j] == 'W') mask |= 2<< (j*2);
108 }
109 }
110 output( "\t.long 0x%08x\n", mask );
111 }
112
113 /* then the relay thunks */
114
115 output( "\t.text\n" );
116 output( "__wine_spec_relay_entry_points:\n" );
117 output( "\tnop\n" ); /* to avoid 0 offset */
118
119 for (i = spec->base; i <= spec->limit; i++)
120 {
121 ORDDEF *odp = spec->ordinals[i];
122
123 if (!needs_relay( odp )) continue;
124
125 output( "\t.align %d\n", get_alignment(4) );
126 output( ".L__wine_spec_relay_entry_point_%d:\n", i );
127
128 args = strlen(odp->u.func.arg_types);
129 flags = 0;
130
131 switch (target_cpu)
132 {
133 case CPU_x86:
134 if (odp->flags & FLAG_REGISTER)
135 output( "\tpushl %%eax\n" );
136 else
137 output( "\tpushl %%esp\n" );
138
139 if (odp->flags & FLAG_RET64) flags |= 1;
140 output( "\tpushl $%u\n", (flags << 24) | (args << 16) | (i - spec->base) );
141
142 if (UsePIC)
143 {
144 output( "\tcall %s\n", asm_name("__wine_spec_get_pc_thunk_eax") );
145 output( "1:\tleal .L__wine_spec_relay_descr-1b(%%eax),%%eax\n" );
146 }
147 else output( "\tmovl $.L__wine_spec_relay_descr,%%eax\n" );
148 output( "\tpushl %%eax\n" );
149
150 if (odp->flags & FLAG_REGISTER)
151 {
152 output( "\tcall *8(%%eax)\n" );
153 }
154 else
155 {
156 output( "\tcall *4(%%eax)\n" );
157 if (odp->type == TYPE_STDCALL)
158 output( "\tret $%u\n", args * get_ptr_size() );
159 else
160 output( "\tret\n" );
161 }
162 break;
163
164 case CPU_x86_64:
165 output( "\tmovq %%rcx,8(%%rsp)\n" );
166 output( "\tmovq %%rdx,16(%%rsp)\n" );
167 output( "\tmovq %%r8,24(%%rsp)\n" );
168 output( "\tmovq %%r9,32(%%rsp)\n" );
169 output( "\tmovq %%rsp,%%r8\n" );
170 output( "\tmovq $%u,%%rdx\n", (flags << 24) | (args << 16) | (i - spec->base) );
171 output( "\tleaq .L__wine_spec_relay_descr(%%rip),%%rcx\n" );
172 output( "\tsubq $40,%%rsp\n" );
173 output( "\tcallq *%u(%%rcx)\n", (odp->flags & FLAG_REGISTER) ? 16 : 8 );
174 output( "\taddq $40,%%rsp\n" );
175 output( "\tret\n" );
176 break;
177
178 default:
179 assert(0);
180 }
181 }
182 }
183
184 /*******************************************************************
185 * output_exports
186 *
187 * Output the export table for a Win32 module.
188 */
189 static void output_exports( DLLSPEC *spec )
190 {
191 int i, fwd_size = 0;
192 int nr_exports = spec->base <= spec->limit ? spec->limit - spec->base + 1 : 0;
193
194 if (!nr_exports) return;
195
196 output( "\n/* export table */\n\n" );
197 output( "\t.data\n" );
198 output( "\t.align %d\n", get_alignment(4) );
199 output( ".L__wine_spec_exports:\n" );
200
201 /* export directory header */
202
203 output( "\t.long 0\n" ); /* Characteristics */
204 output( "\t.long 0\n" ); /* TimeDateStamp */
205 output( "\t.long 0\n" ); /* MajorVersion/MinorVersion */
206 output( "\t.long .L__wine_spec_exp_names-.L__wine_spec_rva_base\n" ); /* Name */
207 output( "\t.long %u\n", spec->base ); /* Base */
208 output( "\t.long %u\n", nr_exports ); /* NumberOfFunctions */
209 output( "\t.long %u\n", spec->nb_names ); /* NumberOfNames */
210 output( "\t.long .L__wine_spec_exports_funcs-.L__wine_spec_rva_base\n" ); /* AddressOfFunctions */
211 if (spec->nb_names)
212 {
213 output( "\t.long .L__wine_spec_exp_name_ptrs-.L__wine_spec_rva_base\n" ); /* AddressOfNames */
214 output( "\t.long .L__wine_spec_exp_ordinals-.L__wine_spec_rva_base\n" ); /* AddressOfNameOrdinals */
215 }
216 else
217 {
218 output( "\t.long 0\n" ); /* AddressOfNames */
219 output( "\t.long 0\n" ); /* AddressOfNameOrdinals */
220 }
221
222 /* output the function pointers */
223
224 output( "\n.L__wine_spec_exports_funcs:\n" );
225 for (i = spec->base; i <= spec->limit; i++)
226 {
227 ORDDEF *odp = spec->ordinals[i];
228 if (!odp) output( "\t%s 0\n", get_asm_ptr_keyword() );
229 else switch(odp->type)
230 {
231 case TYPE_EXTERN:
232 case TYPE_STDCALL:
233 case TYPE_VARARGS:
234 case TYPE_CDECL:
235 if (odp->flags & FLAG_FORWARD)
236 {
237 output( "\t%s .L__wine_spec_forwards+%u\n", get_asm_ptr_keyword(), fwd_size );
238 fwd_size += strlen(odp->link_name) + 1;
239 }
240 else if (odp->flags & FLAG_EXT_LINK)
241 {
242 output( "\t%s %s_%s\n",
243 get_asm_ptr_keyword(), asm_name("__wine_spec_ext_link"), odp->link_name );
244 }
245 else
246 {
247 output( "\t%s %s\n", get_asm_ptr_keyword(), asm_name(odp->link_name) );
248 }
249 break;
250 case TYPE_STUB:
251 output( "\t%s %s\n", get_asm_ptr_keyword(),
252 asm_name( get_stub_name( odp, spec )) );
253 break;
254 default:
255 assert(0);
256 }
257 }
258
259 if (spec->nb_names)
260 {
261 /* output the function name pointers */
262
263 int namepos = strlen(spec->file_name) + 1;
264
265 output( "\n.L__wine_spec_exp_name_ptrs:\n" );
266 for (i = 0; i < spec->nb_names; i++)
267 {
268 output( "\t.long .L__wine_spec_exp_names+%u-.L__wine_spec_rva_base\n", namepos );
269 namepos += strlen(spec->names[i]->name) + 1;
270 }
271
272 /* output the function ordinals */
273
274 output( "\n.L__wine_spec_exp_ordinals:\n" );
275 for (i = 0; i < spec->nb_names; i++)
276 {
277 output( "\t%s %d\n",
278 get_asm_short_keyword(), spec->names[i]->ordinal - spec->base );
279 }
280 if (spec->nb_names % 2)
281 {
282 output( "\t%s 0\n", get_asm_short_keyword() );
283 }
284 }
285
286 /* output the export name strings */
287
288 output( "\n.L__wine_spec_exp_names:\n" );
289 output( "\t%s \"%s\"\n", get_asm_string_keyword(), spec->file_name );
290 for (i = 0; i < spec->nb_names; i++)
291 output( "\t%s \"%s\"\n",
292 get_asm_string_keyword(), spec->names[i]->name );
293
294 /* output forward strings */
295
296 if (fwd_size)
297 {
298 output( "\n.L__wine_spec_forwards:\n" );
299 for (i = spec->base; i <= spec->limit; i++)
300 {
301 ORDDEF *odp = spec->ordinals[i];
302 if (odp && (odp->flags & FLAG_FORWARD))
303 output( "\t%s \"%s\"\n", get_asm_string_keyword(), odp->link_name );
304 }
305 }
306 output( "\t.align %d\n", get_alignment(get_ptr_size()) );
307 output( ".L__wine_spec_exports_end:\n" );
308
309 /* output relays */
310
311 /* we only support relay debugging on i386 and x86_64 */
312 if (target_cpu != CPU_x86 && target_cpu != CPU_x86_64)
313 {
314 output( "\t%s 0\n", get_asm_ptr_keyword() );
315 return;
316 }
317
318 output( ".L__wine_spec_relay_descr:\n" );
319 output( "\t%s 0xdeb90001\n", get_asm_ptr_keyword() ); /* magic */
320 output( "\t%s 0,0\n", get_asm_ptr_keyword() ); /* relay funcs */
321 output( "\t%s 0\n", get_asm_ptr_keyword() ); /* private data */
322 output( "\t%s __wine_spec_relay_entry_points\n", get_asm_ptr_keyword() );
323 output( "\t%s .L__wine_spec_relay_entry_point_offsets\n", get_asm_ptr_keyword() );
324 output( "\t%s .L__wine_spec_relay_arg_types\n", get_asm_ptr_keyword() );
325
326 output_relay_debug( spec );
327 }
328
329
330 /*******************************************************************
331 * output_asm_constructor
332 *
333 * Output code for calling a dll constructor.
334 */
335 static void output_asm_constructor( const char *constructor )
336 {
337 if (target_platform == PLATFORM_APPLE)
338 {
339 /* Mach-O doesn't have an init section */
340 output( "\n\t.mod_init_func\n" );
341 output( "\t.align %d\n", get_alignment(4) );
342 output( "\t.long %s\n", asm_name(constructor) );
343 }
344 else
345 {
346 output( "\n\t.section \".init\",\"ax\"\n" );
347 switch(target_cpu)
348 {
349 case CPU_x86:
350 case CPU_x86_64:
351 output( "\tcall %s\n", asm_name(constructor) );
352 break;
353 case CPU_SPARC:
354 output( "\tcall %s\n", asm_name(constructor) );
355 output( "\tnop\n" );
356 break;
357 case CPU_ALPHA:
358 output( "\tjsr $26,%s\n", asm_name(constructor) );
359 break;
360 case CPU_POWERPC:
361 output( "\tbl %s\n", asm_name(constructor) );
362 break;
363 }
364 }
365 }
366
367
368 /*******************************************************************
369 * BuildSpec32File
370 *
371 * Build a Win32 C file from a spec file.
372 */
373 void BuildSpec32File( DLLSPEC *spec )
374 {
375 int machine = 0;
376 unsigned int page_size = get_page_size();
377
378 resolve_imports( spec );
379 output_standard_file_header();
380
381 /* Reserve some space for the PE header */
382
383 switch (target_platform)
384 {
385 case PLATFORM_APPLE:
386 output( "\t.text\n" );
387 output( "\t.align %d\n", get_alignment(page_size) );
388 output( "__wine_spec_pe_header:\n" );
389 output( "\t.space 65536\n" );
390 break;
391 case PLATFORM_SOLARIS:
392 output( "\n\t.section \".text\",\"ax\"\n" );
393 output( "__wine_spec_pe_header:\n" );
394 output( "\t.skip %u\n", 65536 + page_size );
395 break;
396 default:
397 output( "\n\t.section \".init\",\"ax\"\n" );
398 switch(target_cpu)
399 {
400 case CPU_x86:
401 case CPU_x86_64:
402 case CPU_ALPHA:
403 case CPU_SPARC:
404 output( "\tjmp 1f\n" );
405 break;
406 case CPU_POWERPC:
407 output( "\tb 1f\n" );
408 break;
409 }
410 output( "__wine_spec_pe_header:\n" );
411 output( "\t.skip %u\n", 65536 + page_size );
412 output( "1:\n" );
413 break;
414 }
415
416 /* Output the NT header */
417
418 output( "\n\t.data\n" );
419 output( "\t.align %d\n", get_alignment(get_ptr_size()) );
420 output( "%s\n", asm_globl("__wine_spec_nt_header") );
421 output( ".L__wine_spec_rva_base:\n" );
422
423 output( "\t.long 0x%04x\n", IMAGE_NT_SIGNATURE ); /* Signature */
424 switch(target_cpu)
425 {
426 case CPU_x86: machine = IMAGE_FILE_MACHINE_I386; break;
427 case CPU_x86_64: machine = IMAGE_FILE_MACHINE_AMD64; break;
428 case CPU_POWERPC: machine = IMAGE_FILE_MACHINE_POWERPC; break;
429 case CPU_ALPHA: machine = IMAGE_FILE_MACHINE_ALPHA; break;
430 case CPU_SPARC: machine = IMAGE_FILE_MACHINE_UNKNOWN; break;
431 }
432 output( "\t%s 0x%04x\n", /* Machine */
433 get_asm_short_keyword(), machine );
434 output( "\t%s 0\n", /* NumberOfSections */
435 get_asm_short_keyword() );
436 output( "\t.long 0\n" ); /* TimeDateStamp */
437 output( "\t.long 0\n" ); /* PointerToSymbolTable */
438 output( "\t.long 0\n" ); /* NumberOfSymbols */
439 output( "\t%s %d\n", /* SizeOfOptionalHeader */
440 get_asm_short_keyword(),
441 get_ptr_size() == 8 ? IMAGE_SIZEOF_NT_OPTIONAL64_HEADER : IMAGE_SIZEOF_NT_OPTIONAL32_HEADER );
442 output( "\t%s 0x%04x\n", /* Characteristics */
443 get_asm_short_keyword(), spec->characteristics );
444 output( "\t%s 0x%04x\n", /* Magic */
445 get_asm_short_keyword(),
446 get_ptr_size() == 8 ? IMAGE_NT_OPTIONAL_HDR64_MAGIC : IMAGE_NT_OPTIONAL_HDR32_MAGIC );
447 output( "\t.byte 0\n" ); /* MajorLinkerVersion */
448 output( "\t.byte 0\n" ); /* MinorLinkerVersion */
449 output( "\t.long 0\n" ); /* SizeOfCode */
450 output( "\t.long 0\n" ); /* SizeOfInitializedData */
451 output( "\t.long 0\n" ); /* SizeOfUninitializedData */
452 /* note: we expand the AddressOfEntryPoint field on 64-bit by overwriting the BaseOfCode field */
453 output( "\t%s %s\n", /* AddressOfEntryPoint */
454 get_asm_ptr_keyword(), asm_name(spec->init_func) );
455 if (get_ptr_size() == 4)
456 {
457 output( "\t.long 0\n" ); /* BaseOfCode */
458 output( "\t.long 0\n" ); /* BaseOfData */
459 }
460 output( "\t%s __wine_spec_pe_header\n", /* ImageBase */
461 get_asm_ptr_keyword() );
462 output( "\t.long %u\n", page_size ); /* SectionAlignment */
463 output( "\t.long %u\n", page_size ); /* FileAlignment */
464 output( "\t%s 1,0\n", /* Major/MinorOperatingSystemVersion */
465 get_asm_short_keyword() );
466 output( "\t%s 0,0\n", /* Major/MinorImageVersion */
467 get_asm_short_keyword() );
468 output( "\t%s %u,%u\n", /* Major/MinorSubsystemVersion */
469 get_asm_short_keyword(), spec->subsystem_major, spec->subsystem_minor );
470 output( "\t.long 0\n" ); /* Win32VersionValue */
471 output( "\t.long %s-.L__wine_spec_rva_base\n", /* SizeOfImage */
472 asm_name("_end") );
473 output( "\t.long %u\n", page_size ); /* SizeOfHeaders */
474 output( "\t.long 0\n" ); /* CheckSum */
475 output( "\t%s 0x%04x\n", /* Subsystem */
476 get_asm_short_keyword(), spec->subsystem );
477 output( "\t%s 0x%04x\n", /* DllCharacteristics */
478 get_asm_short_keyword(), spec->dll_characteristics );
479 output( "\t%s %u,%u\n", /* SizeOfStackReserve/Commit */
480 get_asm_ptr_keyword(), (spec->stack_size ? spec->stack_size : 1024) * 1024, page_size );
481 output( "\t%s %u,%u\n", /* SizeOfHeapReserve/Commit */
482 get_asm_ptr_keyword(), (spec->heap_size ? spec->heap_size : 1024) * 1024, page_size );
483 output( "\t.long 0\n" ); /* LoaderFlags */
484 output( "\t.long 16\n" ); /* NumberOfRvaAndSizes */
485
486 if (spec->base <= spec->limit) /* DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT] */
487 output( "\t.long .L__wine_spec_exports-.L__wine_spec_rva_base,"
488 ".L__wine_spec_exports_end-.L__wine_spec_exports\n" );
489 else
490 output( "\t.long 0,0\n" );
491
492 if (has_imports()) /* DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT] */
493 output( "\t.long .L__wine_spec_imports-.L__wine_spec_rva_base,"
494 ".L__wine_spec_imports_end-.L__wine_spec_imports\n" );
495 else
496 output( "\t.long 0,0\n" );
497
498 if (spec->nb_resources) /* DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE] */
499 output( "\t.long .L__wine_spec_resources-.L__wine_spec_rva_base,"
500 ".L__wine_spec_resources_end-.L__wine_spec_resources\n" );
501 else
502 output( "\t.long 0,0\n" );
503
504 output( "\t.long 0,0\n" ); /* DataDirectory[3] */
505 output( "\t.long 0,0\n" ); /* DataDirectory[4] */
506 output( "\t.long 0,0\n" ); /* DataDirectory[5] */
507 output( "\t.long 0,0\n" ); /* DataDirectory[6] */
508 output( "\t.long 0,0\n" ); /* DataDirectory[7] */
509 output( "\t.long 0,0\n" ); /* DataDirectory[8] */
510 output( "\t.long 0,0\n" ); /* DataDirectory[9] */
511 output( "\t.long 0,0\n" ); /* DataDirectory[10] */
512 output( "\t.long 0,0\n" ); /* DataDirectory[11] */
513 output( "\t.long 0,0\n" ); /* DataDirectory[12] */
514 output( "\t.long 0,0\n" ); /* DataDirectory[13] */
515 output( "\t.long 0,0\n" ); /* DataDirectory[14] */
516 output( "\t.long 0,0\n" ); /* DataDirectory[15] */
517
518 output( "\n\t%s\n", get_asm_string_section() );
519 output( "%s\n", asm_globl("__wine_spec_file_name") );
520 output( ".L__wine_spec_file_name:\n" );
521 output( "\t%s \"%s\"\n", get_asm_string_keyword(), spec->file_name );
522 if (target_platform == PLATFORM_APPLE)
523 output( "\t.lcomm %s,4\n", asm_name("_end") );
524
525 output_stubs( spec );
526 output_exports( spec );
527 output_imports( spec );
528 output_resources( spec );
529 output_asm_constructor( "__wine_spec_init_ctor" );
530 output_gnu_stack_note();
531 }
532
533
534 /*******************************************************************
535 * BuildDef32File
536 *
537 * Build a Win32 def file from a spec file.
538 */
539 void BuildDef32File( DLLSPEC *spec )
540 {
541 const char *name;
542 int i, total;
543
544 if (spec_file_name)
545 output( "; File generated automatically from %s; do not edit!\n\n",
546 spec_file_name );
547 else
548 output( "; File generated automatically; do not edit!\n\n" );
549
550 output( "LIBRARY %s\n\n", spec->file_name);
551 output( "EXPORTS\n");
552
553 /* Output the exports and relay entry points */
554
555 for (i = total = 0; i < spec->nb_entry_points; i++)
556 {
557 const ORDDEF *odp = &spec->entry_points[i];
558 int is_data = 0;
559
560 if (!odp) continue;
561
562 if (odp->name) name = odp->name;
563 else if (odp->export_name) name = odp->export_name;
564 else continue;
565
566 if (!(odp->flags & FLAG_PRIVATE)) total++;
567
568 if (odp->type == TYPE_STUB) continue;
569
570 output( " %s", name );
571
572 switch(odp->type)
573 {
574 case TYPE_EXTERN:
575 is_data = 1;
576 /* fall through */
577 case TYPE_VARARGS:
578 case TYPE_CDECL:
579 /* try to reduce output */
580 if(strcmp(name, odp->link_name) || (odp->flags & FLAG_FORWARD))
581 output( "=%s", odp->link_name );
582 break;
583 case TYPE_STDCALL:
584 {
585 int at_param = strlen(odp->u.func.arg_types) * get_ptr_size();
586 if (!kill_at && target_cpu == CPU_x86) output( "@%d", at_param );
587 if (odp->flags & FLAG_FORWARD)
588 {
589 output( "=%s", odp->link_name );
590 }
591 else if (strcmp(name, odp->link_name)) /* try to reduce output */
592 {
593 output( "=%s", odp->link_name );
594 if (!kill_at && target_cpu == CPU_x86) output( "@%d", at_param );
595 }
596 break;
597 }
598 default:
599 assert(0);
600 }
601 output( " @%d", odp->ordinal );
602 if (!odp->name || (odp->flags & FLAG_ORDINAL)) output( " NONAME" );
603 if (is_data) output( " DATA" );
604 if (odp->flags & FLAG_PRIVATE) output( " PRIVATE" );
605 output( "\n" );
606 }
607 if (!total) warning( "%s: Import library doesn't export anything\n", spec->file_name );
608 }
useful hacks and other patches not (yet) suitable for mainline