1 /*
2 * PowerPC signal handling routines
3 *
4 * Copyright 2002 Marcus Meissner, SuSE Linux AG
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #ifdef __powerpc__
22
23 #include "config.h"
24 #include "wine/port.h"
25
26 #include <assert.h>
27 #include <signal.h>
28 #include <stdlib.h>
29 #include <stdarg.h>
30 #include <stdio.h>
31 #ifdef HAVE_UNISTD_H
32 # include <unistd.h>
33 #endif
34
35 #ifdef HAVE_SYS_PARAM_H
36 # include <sys/param.h>
37 #endif
38 #ifdef HAVE_SYSCALL_H
39 # include <syscall.h>
40 #else
41 # ifdef HAVE_SYS_SYSCALL_H
42 # include <sys/syscall.h>
43 # endif
44 #endif
45
46 #ifdef HAVE_SYS_VM86_H
47 # include <sys/vm86.h>
48 #endif
49
50 #ifdef HAVE_SYS_SIGNAL_H
51 # include <sys/signal.h>
52 #endif
53
54 #include "windef.h"
55 #include "winternl.h"
56 #include "wine/library.h"
57 #include "wine/exception.h"
58 #include "ntdll_misc.h"
59 #include "wine/debug.h"
60
61 WINE_DEFAULT_DEBUG_CHANNEL(seh);
62
63
64 /***********************************************************************
65 * signal context platform-specific definitions
66 */
67 #ifdef linux
68
69 typedef struct ucontext SIGCONTEXT;
70
71 # define HANDLER_DEF(name) void name( int __signal, struct siginfo *__siginfo, SIGCONTEXT *__context )
72 # define HANDLER_CONTEXT (__context)
73
74 /* All Registers access - only for local access */
75 # define REG_sig(reg_name, context) ((context)->uc_mcontext.regs->reg_name)
76
77
78 /* Gpr Registers access */
79 # define GPR_sig(reg_num, context) REG_sig(gpr[reg_num], context)
80
81 # define IAR_sig(context) REG_sig(nip, context) /* Program counter */
82 # define MSR_sig(context) REG_sig(msr, context) /* Machine State Register (Supervisor) */
83 # define CTR_sig(context) REG_sig(ctr, context) /* Count register */
84
85 # define XER_sig(context) REG_sig(xer, context) /* User's integer exception register */
86 # define LR_sig(context) REG_sig(link, context) /* Link register */
87 # define CR_sig(context) REG_sig(ccr, context) /* Condition register */
88
89 /* Float Registers access */
90 # define FLOAT_sig(reg_num, context) (((double*)((char*)((context)->uc_mcontext.regs+48*4)))[reg_num])
91
92 # define FPSCR_sig(context) (*(int*)((char*)((context)->uc_mcontext.regs+(48+32*2)*4)))
93
94 /* Exception Registers access */
95 # define DAR_sig(context) REG_sig(dar, context)
96 # define DSISR_sig(context) REG_sig(dsisr, context)
97 # define TRAP_sig(context) REG_sig(trap, context)
98
99 #endif /* linux */
100
101 #ifdef __APPLE__
102
103 # include <sys/ucontext.h>
104
105 # include <sys/types.h>
106 typedef siginfo_t siginfo;
107
108 typedef struct ucontext SIGCONTEXT;
109
110
111 # define HANDLER_DEF(name) void name( int __signal, siginfo *__siginfo, SIGCONTEXT *__context )
112 # define HANDLER_CONTEXT (__context)
113
114 /* All Registers access - only for local access */
115 # define REG_sig(reg_name, context) ((context)->uc_mcontext->ss.reg_name)
116 # define FLOATREG_sig(reg_name, context) ((context)->uc_mcontext->fs.reg_name)
117 # define EXCEPREG_sig(reg_name, context) ((context)->uc_mcontext->es.reg_name)
118 # define VECREG_sig(reg_name, context) ((context)->uc_mcontext->vs.reg_name)
119
120 /* Gpr Registers access */
121 # define GPR_sig(reg_num, context) REG_sig(r##reg_num, context)
122
123 # define IAR_sig(context) REG_sig(srr0, context) /* Program counter */
124 # define MSR_sig(context) REG_sig(srr1, context) /* Machine State Register (Supervisor) */
125 # define CTR_sig(context) REG_sig(ctr, context)
126
127 # define XER_sig(context) REG_sig(xer, context) /* Link register */
128 # define LR_sig(context) REG_sig(lr, context) /* User's integer exception register */
129 # define CR_sig(context) REG_sig(cr, context) /* Condition register */
130
131 /* Float Registers access */
132 # define FLOAT_sig(reg_num, context) FLOATREG_sig(fpregs[reg_num], context)
133
134 # define FPSCR_sig(context) FLOATREG_sig(fpscr, context)
135
136 /* Exception Registers access */
137 # define DAR_sig(context) EXCEPREG_sig(dar, context) /* Fault registers for coredump */
138 # define DSISR_sig(context) EXCEPREG_sig(dsisr, context)
139 # define TRAP_sig(context) EXCEPREG_sig(exception, context) /* number of powerpc exception taken */
140
141 /* Signal defs : Those are undefined on darwin
142 SIGBUS
143 #undef BUS_ADRERR
144 #undef BUS_OBJERR
145 SIGILL
146 #undef ILL_ILLOPN
147 #undef ILL_ILLTRP
148 #undef ILL_ILLADR
149 #undef ILL_COPROC
150 #undef ILL_PRVREG
151 #undef ILL_BADSTK
152 SIGTRAP
153 #undef TRAP_BRKPT
154 #undef TRAP_TRACE
155 SIGFPE
156 */
157
158 #endif /* __APPLE__ */
159
160
161
162 typedef int (*wine_signal_handler)(unsigned int sig);
163
164 static wine_signal_handler handlers[256];
165
166 /***********************************************************************
167 * dispatch_signal
168 */
169 static inline int dispatch_signal(unsigned int sig)
170 {
171 if (handlers[sig] == NULL) return 0;
172 return handlers[sig](sig);
173 }
174
175 /***********************************************************************
176 * save_context
177 *
178 * Set the register values from a sigcontext.
179 */
180 static void save_context( CONTEXT *context, const SIGCONTEXT *sigcontext )
181 {
182
183 #define C(x) context->Gpr##x = GPR_sig(x,sigcontext)
184 /* Save Gpr registers */
185 C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
186 C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
187 C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
188 C(31);
189 #undef C
190
191 context->Iar = IAR_sig(sigcontext); /* Program Counter */
192 context->Msr = MSR_sig(sigcontext); /* Machine State Register (Supervisor) */
193 context->Ctr = CTR_sig(sigcontext);
194
195 context->Xer = XER_sig(sigcontext);
196 context->Lr = LR_sig(sigcontext);
197 context->Cr = CR_sig(sigcontext);
198
199 /* Saving Exception regs */
200 context->Dar = DAR_sig(sigcontext);
201 context->Dsisr = DSISR_sig(sigcontext);
202 context->Trap = TRAP_sig(sigcontext);
203 }
204
205
206 /***********************************************************************
207 * restore_context
208 *
209 * Build a sigcontext from the register values.
210 */
211 static void restore_context( const CONTEXT *context, SIGCONTEXT *sigcontext )
212 {
213
214 #define C(x) GPR_sig(x,sigcontext) = context->Gpr##x
215 C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
216 C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
217 C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
218 C(31);
219 #undef C
220
221 IAR_sig(sigcontext) = context->Iar; /* Program Counter */
222 MSR_sig(sigcontext) = context->Msr; /* Machine State Register (Supervisor) */
223 CTR_sig(sigcontext) = context->Ctr;
224
225 XER_sig(sigcontext) = context->Xer;
226 LR_sig(sigcontext) = context->Lr;
227 CR_sig(sigcontext) = context->Cr;
228
229 /* Setting Exception regs */
230 DAR_sig(sigcontext) = context->Dar;
231 DSISR_sig(sigcontext) = context->Dsisr;
232 TRAP_sig(sigcontext) = context->Trap;
233 }
234
235
236 /***********************************************************************
237 * save_fpu
238 *
239 * Set the FPU context from a sigcontext.
240 */
241 static inline void save_fpu( CONTEXT *context, const SIGCONTEXT *sigcontext )
242 {
243 #define C(x) context->Fpr##x = FLOAT_sig(x,sigcontext)
244 C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
245 C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
246 C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
247 C(31);
248 #undef C
249 context->Fpscr = FPSCR_sig(sigcontext);
250 }
251
252
253 /***********************************************************************
254 * restore_fpu
255 *
256 * Restore the FPU context to a sigcontext.
257 */
258 static inline void restore_fpu( CONTEXT *context, const SIGCONTEXT *sigcontext )
259 {
260 #define C(x) FLOAT_sig(x,sigcontext) = context->Fpr##x
261 C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
262 C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
263 C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
264 C(31);
265 #undef C
266 FPSCR_sig(sigcontext) = context->Fpscr;
267 }
268
269
270 /***********************************************************************
271 * RtlCaptureContext (NTDLL.@)
272 */
273 void WINAPI RtlCaptureContext( CONTEXT *context )
274 {
275 FIXME("not implemented\n");
276 memset( context, 0, sizeof(*context) );
277 }
278
279
280 /***********************************************************************
281 * set_cpu_context
282 *
283 * Set the new CPU context.
284 */
285 void set_cpu_context( const CONTEXT *context )
286 {
287 FIXME("not implemented\n");
288 }
289
290
291 /**********************************************************************
292 * get_fpu_code
293 *
294 * Get the FPU exception code from the FPU status.
295 */
296 static inline DWORD get_fpu_code( const CONTEXT *context )
297 {
298 DWORD status = context->Fpscr;
299
300 if (status & 0x01) /* IE */
301 {
302 if (status & 0x40) /* SF */
303 return EXCEPTION_FLT_STACK_CHECK;
304 else
305 return EXCEPTION_FLT_INVALID_OPERATION;
306 }
307 if (status & 0x02) return EXCEPTION_FLT_DENORMAL_OPERAND; /* DE flag */
308 if (status & 0x04) return EXCEPTION_FLT_DIVIDE_BY_ZERO; /* ZE flag */
309 if (status & 0x08) return EXCEPTION_FLT_OVERFLOW; /* OE flag */
310 if (status & 0x10) return EXCEPTION_FLT_UNDERFLOW; /* UE flag */
311 if (status & 0x20) return EXCEPTION_FLT_INEXACT_RESULT; /* PE flag */
312 return EXCEPTION_FLT_INVALID_OPERATION; /* generic error */
313 }
314
315 /**********************************************************************
316 * do_segv
317 *
318 * Implementation of SIGSEGV handler.
319 */
320 static void do_segv( CONTEXT *context, int trap, int err, int code, void * addr )
321 {
322 EXCEPTION_RECORD rec;
323
324 rec.ExceptionRecord = NULL;
325 rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
326 rec.ExceptionAddress = addr;
327 rec.NumberParameters = 0;
328
329 switch (trap) {
330 case SIGSEGV:
331 switch ( code & 0xffff ) {
332 case SEGV_MAPERR:
333 case SEGV_ACCERR:
334 rec.NumberParameters = 2;
335 rec.ExceptionInformation[0] = 0; /* FIXME ? */
336 rec.ExceptionInformation[1] = (ULONG_PTR)addr;
337 if (!(rec.ExceptionCode = virtual_handle_fault(addr, rec.ExceptionInformation[0])))
338 return;
339 break;
340 default:FIXME("Unhandled SIGSEGV/%x\n",code);
341 break;
342 }
343 break;
344 case SIGBUS:
345 switch ( code & 0xffff ) {
346 case BUS_ADRALN:
347 rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
348 break;
349 #ifdef BUS_ADRERR
350 case BUS_ADRERR:
351 #endif
352 #ifdef BUS_OBJERR
353 case BUS_OBJERR:
354 /* FIXME: correct for all cases ? */
355 rec.NumberParameters = 2;
356 rec.ExceptionInformation[0] = 0; /* FIXME ? */
357 rec.ExceptionInformation[1] = (ULONG_PTR)addr;
358 if (!(rec.ExceptionCode = virtual_handle_fault(addr, rec.ExceptionInformation[0])))
359 return;
360 break;
361 #endif
362 default:FIXME("Unhandled SIGBUS/%x\n",code);
363 break;
364 }
365 break;
366 case SIGILL:
367 switch ( code & 0xffff ) {
368 case ILL_ILLOPC: /* illegal opcode */
369 #ifdef ILL_ILLOPN
370 case ILL_ILLOPN: /* illegal operand */
371 #endif
372 #ifdef ILL_ILLADR
373 case ILL_ILLADR: /* illegal addressing mode */
374 #endif
375 #ifdef ILL_ILLTRP
376 case ILL_ILLTRP: /* illegal trap */
377 #endif
378 #ifdef ILL_COPROC
379 case ILL_COPROC: /* coprocessor error */
380 #endif
381 rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
382 break;
383 case ILL_PRVOPC: /* privileged opcode */
384 #ifdef ILL_PRVREG
385 case ILL_PRVREG: /* privileged register */
386 #endif
387 rec.ExceptionCode = EXCEPTION_PRIV_INSTRUCTION;
388 break;
389 #ifdef ILL_BADSTK
390 case ILL_BADSTK: /* internal stack error */
391 rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
392 break;
393 #endif
394 default:FIXME("Unhandled SIGILL/%x\n", code);
395 break;
396 }
397 break;
398 }
399 __regs_RtlRaiseException( &rec, context );
400 }
401
402 /**********************************************************************
403 * do_trap
404 *
405 * Implementation of SIGTRAP handler.
406 */
407 static void do_trap( CONTEXT *context, int code, void * addr )
408 {
409 EXCEPTION_RECORD rec;
410
411 rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
412 rec.ExceptionRecord = NULL;
413 rec.ExceptionAddress = addr;
414 rec.NumberParameters = 0;
415
416 /* FIXME: check if we might need to modify PC */
417 switch (code & 0xffff) {
418 #ifdef TRAP_BRKPT
419 case TRAP_BRKPT:
420 rec.ExceptionCode = EXCEPTION_BREAKPOINT;
421 break;
422 #endif
423 #ifdef TRAP_TRACE
424 case TRAP_TRACE:
425 rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
426 break;
427 #endif
428 default:FIXME("Unhandled SIGTRAP/%x\n", code);
429 break;
430 }
431 __regs_RtlRaiseException( &rec, context );
432 }
433
434 /**********************************************************************
435 * do_trap
436 *
437 * Implementation of SIGFPE handler.
438 */
439 static void do_fpe( CONTEXT *context, int code, void * addr )
440 {
441 EXCEPTION_RECORD rec;
442
443 switch ( code & 0xffff ) {
444 #ifdef FPE_FLTSUB
445 case FPE_FLTSUB:
446 rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
447 break;
448 #endif
449 #ifdef FPE_INTDIV
450 case FPE_INTDIV:
451 rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
452 break;
453 #endif
454 #ifdef FPE_INTOVF
455 case FPE_INTOVF:
456 rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
457 break;
458 #endif
459 #ifdef FPE_FLTDIV
460 case FPE_FLTDIV:
461 rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
462 break;
463 #endif
464 #ifdef FPE_FLTOVF
465 case FPE_FLTOVF:
466 rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
467 break;
468 #endif
469 #ifdef FPE_FLTUND
470 case FPE_FLTUND:
471 rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
472 break;
473 #endif
474 #ifdef FPE_FLTRES
475 case FPE_FLTRES:
476 rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
477 break;
478 #endif
479 #ifdef FPE_FLTINV
480 case FPE_FLTINV:
481 #endif
482 default:
483 rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
484 break;
485 }
486 rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
487 rec.ExceptionRecord = NULL;
488 rec.ExceptionAddress = addr;
489 rec.NumberParameters = 0;
490 __regs_RtlRaiseException( &rec, context );
491 }
492
493 /**********************************************************************
494 * segv_handler
495 *
496 * Handler for SIGSEGV and related errors.
497 */
498 static HANDLER_DEF(segv_handler)
499 {
500 CONTEXT context;
501 save_context( &context, HANDLER_CONTEXT );
502 do_segv( &context, __siginfo->si_signo, __siginfo->si_errno, __siginfo->si_code, __siginfo->si_addr );
503 restore_context( &context, HANDLER_CONTEXT );
504 }
505
506 /**********************************************************************
507 * trap_handler
508 *
509 * Handler for SIGTRAP.
510 */
511 static HANDLER_DEF(trap_handler)
512 {
513 CONTEXT context;
514 save_context( &context, HANDLER_CONTEXT );
515 do_trap( &context, __siginfo->si_code, __siginfo->si_addr );
516 restore_context( &context, HANDLER_CONTEXT );
517 }
518
519 /**********************************************************************
520 * fpe_handler
521 *
522 * Handler for SIGFPE.
523 */
524 static HANDLER_DEF(fpe_handler)
525 {
526 CONTEXT context;
527 save_fpu( &context, HANDLER_CONTEXT );
528 save_context( &context, HANDLER_CONTEXT );
529 do_fpe( &context, __siginfo->si_code, __siginfo->si_addr );
530 restore_context( &context, HANDLER_CONTEXT );
531 restore_fpu( &context, HANDLER_CONTEXT );
532 }
533
534 /**********************************************************************
535 * int_handler
536 *
537 * Handler for SIGINT.
538 */
539 static HANDLER_DEF(int_handler)
540 {
541 if (!dispatch_signal(SIGINT))
542 {
543 EXCEPTION_RECORD rec;
544 CONTEXT context;
545
546 save_context( &context, HANDLER_CONTEXT );
547 rec.ExceptionCode = CONTROL_C_EXIT;
548 rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
549 rec.ExceptionRecord = NULL;
550 rec.ExceptionAddress = (LPVOID)context.Iar;
551 rec.NumberParameters = 0;
552 __regs_RtlRaiseException( &rec, &context );
553 restore_context( &context, HANDLER_CONTEXT );
554 }
555 }
556
557
558 /**********************************************************************
559 * abrt_handler
560 *
561 * Handler for SIGABRT.
562 */
563 static HANDLER_DEF(abrt_handler)
564 {
565 EXCEPTION_RECORD rec;
566 CONTEXT context;
567
568 save_context( &context, HANDLER_CONTEXT );
569 rec.ExceptionCode = EXCEPTION_WINE_ASSERTION;
570 rec.ExceptionFlags = EH_NONCONTINUABLE;
571 rec.ExceptionRecord = NULL;
572 rec.ExceptionAddress = (LPVOID)context.Iar;
573 rec.NumberParameters = 0;
574 __regs_RtlRaiseException( &rec, &context ); /* Should never return.. */
575 restore_context( &context, HANDLER_CONTEXT );
576 }
577
578
579 /**********************************************************************
580 * quit_handler
581 *
582 * Handler for SIGQUIT.
583 */
584 static HANDLER_DEF(quit_handler)
585 {
586 server_abort_thread(0);
587 }
588
589
590 /**********************************************************************
591 * usr1_handler
592 *
593 * Handler for SIGUSR1, used to signal a thread that it got suspended.
594 */
595 static HANDLER_DEF(usr1_handler)
596 {
597 CONTEXT context;
598
599 save_context( &context, HANDLER_CONTEXT );
600 wait_suspend( &context );
601 restore_context( &context, HANDLER_CONTEXT );
602 }
603
604
605 /**********************************************************************
606 * get_signal_stack_total_size
607 *
608 * Retrieve the size to allocate for the signal stack, including the TEB at the bottom.
609 * Must be a power of two.
610 */
611 size_t get_signal_stack_total_size(void)
612 {
613 assert( sizeof(TEB) <= getpagesize() );
614 return getpagesize(); /* this is just for the TEB, we don't need a signal stack */
615 }
616
617
618 /***********************************************************************
619 * set_handler
620 *
621 * Set a signal handler
622 */
623 static int set_handler( int sig, void (*func)() )
624 {
625 struct sigaction sig_act;
626
627 sig_act.sa_sigaction = func;
628 sig_act.sa_mask = server_block_set;
629 sig_act.sa_flags = SA_RESTART | SA_SIGINFO;
630 return sigaction( sig, &sig_act, NULL );
631 }
632
633
634 /***********************************************************************
635 * __wine_set_signal_handler (NTDLL.@)
636 */
637 int CDECL __wine_set_signal_handler(unsigned int sig, wine_signal_handler wsh)
638 {
639 if (sig > sizeof(handlers) / sizeof(handlers[0])) return -1;
640 if (handlers[sig] != NULL) return -2;
641 handlers[sig] = wsh;
642 return 0;
643 }
644
645
646 /**********************************************************************
647 * signal_init_thread
648 */
649 void signal_init_thread(void)
650 {
651 }
652
653 /**********************************************************************
654 * signal_init_process
655 */
656 void signal_init_process(void)
657 {
658 if (set_handler( SIGINT, (void (*)())int_handler ) == -1) goto error;
659 if (set_handler( SIGFPE, (void (*)())fpe_handler ) == -1) goto error;
660 if (set_handler( SIGSEGV, (void (*)())segv_handler ) == -1) goto error;
661 if (set_handler( SIGILL, (void (*)())segv_handler ) == -1) goto error;
662 if (set_handler( SIGABRT, (void (*)())abrt_handler ) == -1) goto error;
663 if (set_handler( SIGQUIT, (void (*)())quit_handler ) == -1) goto error;
664 if (set_handler( SIGUSR1, (void (*)())usr1_handler ) == -1) goto error;
665 #ifdef SIGBUS
666 if (set_handler( SIGBUS, (void (*)())segv_handler ) == -1) goto error;
667 #endif
668 #ifdef SIGTRAP
669 if (set_handler( SIGTRAP, (void (*)())trap_handler ) == -1) goto error;
670 #endif
671 signal_init_thread();
672 return;
673
674 error:
675 perror("sigaction");
676 exit(1);
677 }
678
679
680 /**********************************************************************
681 * __wine_enter_vm86 (NTDLL.@)
682 */
683 void __wine_enter_vm86( CONTEXT *context )
684 {
685 MESSAGE("vm86 mode not supported on this platform\n");
686 }
687
688 /**********************************************************************
689 * DbgBreakPoint (NTDLL.@)
690 */
691 void WINAPI DbgBreakPoint(void)
692 {
693 kill(getpid(), SIGTRAP);
694 }
695
696 /**********************************************************************
697 * DbgUserBreakPoint (NTDLL.@)
698 */
699 void WINAPI DbgUserBreakPoint(void)
700 {
701 kill(getpid(), SIGTRAP);
702 }
703
704 #endif /* __powerpc__ */
705
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