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dbghelp: Use local declarations of r_debug and link_map structs.
[wine.git] / dlls / ntdll / signal_powerpc.c
blob70b79f1d8ac52cb60ee2508a02ef08ae10fd0e59
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 #include <sys/types.h>
32 #ifdef HAVE_UNISTD_H
33 # include <unistd.h>
34 #endif
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 #ifdef HAVE_SYS_SIGNAL_H
46 # include <sys/signal.h>
47 #endif
48 #ifdef HAVE_SYS_UCONTEXT_H
49 # include <sys/ucontext.h>
50 #endif
51
52 #include "ntstatus.h"
53 #define WIN32_NO_STATUS
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 WINE_DECLARE_DEBUG_CHANNEL(relay);
63
64 static pthread_key_t teb_key;
65
66 /***********************************************************************
67 * signal context platform-specific definitions
68 */
69 #ifdef linux
70
71 /* All Registers access - only for local access */
72 # define REG_sig(reg_name, context) ((context)->uc_mcontext.regs->reg_name)
73
74
75 /* Gpr Registers access */
76 # define GPR_sig(reg_num, context) REG_sig(gpr[reg_num], context)
77
78 # define IAR_sig(context) REG_sig(nip, context) /* Program counter */
79 # define MSR_sig(context) REG_sig(msr, context) /* Machine State Register (Supervisor) */
80 # define CTR_sig(context) REG_sig(ctr, context) /* Count register */
81
82 # define XER_sig(context) REG_sig(xer, context) /* User's integer exception register */
83 # define LR_sig(context) REG_sig(link, context) /* Link register */
84 # define CR_sig(context) REG_sig(ccr, context) /* Condition register */
85
86 /* Float Registers access */
87 # define FLOAT_sig(reg_num, context) (((double*)((char*)((context)->uc_mcontext.regs+48*4)))[reg_num])
88
89 # define FPSCR_sig(context) (*(int*)((char*)((context)->uc_mcontext.regs+(48+32*2)*4)))
90
91 /* Exception Registers access */
92 # define DAR_sig(context) REG_sig(dar, context)
93 # define DSISR_sig(context) REG_sig(dsisr, context)
94 # define TRAP_sig(context) REG_sig(trap, context)
95
96 #endif /* linux */
97
98 #ifdef __APPLE__
99
100 /* All Registers access - only for local access */
101 # define REG_sig(reg_name, context) ((context)->uc_mcontext->ss.reg_name)
102 # define FLOATREG_sig(reg_name, context) ((context)->uc_mcontext->fs.reg_name)
103 # define EXCEPREG_sig(reg_name, context) ((context)->uc_mcontext->es.reg_name)
104 # define VECREG_sig(reg_name, context) ((context)->uc_mcontext->vs.reg_name)
105
106 /* Gpr Registers access */
107 # define GPR_sig(reg_num, context) REG_sig(r##reg_num, context)
108
109 # define IAR_sig(context) REG_sig(srr0, context) /* Program counter */
110 # define MSR_sig(context) REG_sig(srr1, context) /* Machine State Register (Supervisor) */
111 # define CTR_sig(context) REG_sig(ctr, context)
112
113 # define XER_sig(context) REG_sig(xer, context) /* Link register */
114 # define LR_sig(context) REG_sig(lr, context) /* User's integer exception register */
115 # define CR_sig(context) REG_sig(cr, context) /* Condition register */
116
117 /* Float Registers access */
118 # define FLOAT_sig(reg_num, context) FLOATREG_sig(fpregs[reg_num], context)
119
120 # define FPSCR_sig(context) FLOATREG_sig(fpscr, context)
121
122 /* Exception Registers access */
123 # define DAR_sig(context) EXCEPREG_sig(dar, context) /* Fault registers for coredump */
124 # define DSISR_sig(context) EXCEPREG_sig(dsisr, context)
125 # define TRAP_sig(context) EXCEPREG_sig(exception, context) /* number of powerpc exception taken */
126
127 /* Signal defs : Those are undefined on darwin
128 SIGBUS
129 #undef BUS_ADRERR
130 #undef BUS_OBJERR
131 SIGILL
132 #undef ILL_ILLOPN
133 #undef ILL_ILLTRP
134 #undef ILL_ILLADR
135 #undef ILL_COPROC
136 #undef ILL_PRVREG
137 #undef ILL_BADSTK
138 SIGTRAP
139 #undef TRAP_BRKPT
140 #undef TRAP_TRACE
141 SIGFPE
142 */
143
144 #endif /* __APPLE__ */
145
146
147
148 typedef int (*wine_signal_handler)(unsigned int sig);
149
150 static wine_signal_handler handlers[256];
151
152 /***********************************************************************
153 * dispatch_signal
154 */
155 static inline int dispatch_signal(unsigned int sig)
156 {
157 if (handlers[sig] == NULL) return 0;
158 return handlers[sig](sig);
159 }
160
161 /***********************************************************************
162 * save_context
163 *
164 * Set the register values from a sigcontext.
165 */
166 static void save_context( CONTEXT *context, const ucontext_t *sigcontext )
167 {
168
169 #define C(x) context->Gpr##x = GPR_sig(x,sigcontext)
170 /* Save Gpr registers */
171 C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
172 C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
173 C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
174 C(31);
175 #undef C
176
177 context->Iar = IAR_sig(sigcontext); /* Program Counter */
178 context->Msr = MSR_sig(sigcontext); /* Machine State Register (Supervisor) */
179 context->Ctr = CTR_sig(sigcontext);
180
181 context->Xer = XER_sig(sigcontext);
182 context->Lr = LR_sig(sigcontext);
183 context->Cr = CR_sig(sigcontext);
184
185 /* Saving Exception regs */
186 context->Dar = DAR_sig(sigcontext);
187 context->Dsisr = DSISR_sig(sigcontext);
188 context->Trap = TRAP_sig(sigcontext);
189 }
190
191
192 /***********************************************************************
193 * restore_context
194 *
195 * Build a sigcontext from the register values.
196 */
197 static void restore_context( const CONTEXT *context, ucontext_t *sigcontext )
198 {
199
200 #define C(x) GPR_sig(x,sigcontext) = context->Gpr##x
201 C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
202 C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
203 C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
204 C(31);
205 #undef C
206
207 IAR_sig(sigcontext) = context->Iar; /* Program Counter */
208 MSR_sig(sigcontext) = context->Msr; /* Machine State Register (Supervisor) */
209 CTR_sig(sigcontext) = context->Ctr;
210
211 XER_sig(sigcontext) = context->Xer;
212 LR_sig(sigcontext) = context->Lr;
213 CR_sig(sigcontext) = context->Cr;
214
215 /* Setting Exception regs */
216 DAR_sig(sigcontext) = context->Dar;
217 DSISR_sig(sigcontext) = context->Dsisr;
218 TRAP_sig(sigcontext) = context->Trap;
219 }
220
221
222 /***********************************************************************
223 * save_fpu
224 *
225 * Set the FPU context from a sigcontext.
226 */
227 static inline void save_fpu( CONTEXT *context, const ucontext_t *sigcontext )
228 {
229 #define C(x) context->Fpr##x = FLOAT_sig(x,sigcontext)
230 C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
231 C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
232 C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
233 C(31);
234 #undef C
235 context->Fpscr = FPSCR_sig(sigcontext);
236 }
237
238
239 /***********************************************************************
240 * restore_fpu
241 *
242 * Restore the FPU context to a sigcontext.
243 */
244 static inline void restore_fpu( CONTEXT *context, const ucontext_t *sigcontext )
245 {
246 #define C(x) FLOAT_sig(x,sigcontext) = context->Fpr##x
247 C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
248 C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
249 C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
250 C(31);
251 #undef C
252 FPSCR_sig(sigcontext) = context->Fpscr;
253 }
254
255
256 /***********************************************************************
257 * RtlCaptureContext (NTDLL.@)
258 */
259 void WINAPI RtlCaptureContext( CONTEXT *context )
260 {
261 FIXME("not implemented\n");
262 memset( context, 0, sizeof(*context) );
263 }
264
265
266 /***********************************************************************
267 * set_cpu_context
268 *
269 * Set the new CPU context.
270 */
271 static void set_cpu_context( const CONTEXT *context )
272 {
273 FIXME("not implemented\n");
274 }
275
276
277 /***********************************************************************
278 * get_server_context_flags
279 *
280 * Convert CPU-specific flags to generic server flags
281 */
282 static unsigned int get_server_context_flags( DWORD flags )
283 {
284 unsigned int ret = 0;
285
286 if (flags & CONTEXT_CONTROL) ret |= SERVER_CTX_CONTROL;
287 if (flags & CONTEXT_INTEGER) ret |= SERVER_CTX_INTEGER;
288 if (flags & CONTEXT_FLOATING_POINT) ret |= SERVER_CTX_FLOATING_POINT;
289 if (flags & CONTEXT_DEBUG_REGISTERS) ret |= SERVER_CTX_DEBUG_REGISTERS;
290 return ret;
291 }
292
293
294 /***********************************************************************
295 * copy_context
296 *
297 * Copy a register context according to the flags.
298 */
299 static void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
300 {
301 if (flags & CONTEXT_CONTROL)
302 {
303 to->Msr = from->Msr;
304 to->Ctr = from->Ctr;
305 to->Iar = from->Iar;
306 to->Lr = from->Lr;
307 to->Dar = from->Dar;
308 to->Dsisr = from->Dsisr;
309 to->Trap = from->Trap;
310 }
311 if (flags & CONTEXT_INTEGER)
312 {
313 to->Gpr0 = from->Gpr0;
314 to->Gpr1 = from->Gpr1;
315 to->Gpr2 = from->Gpr2;
316 to->Gpr3 = from->Gpr3;
317 to->Gpr4 = from->Gpr4;
318 to->Gpr5 = from->Gpr5;
319 to->Gpr6 = from->Gpr6;
320 to->Gpr7 = from->Gpr7;
321 to->Gpr8 = from->Gpr8;
322 to->Gpr9 = from->Gpr9;
323 to->Gpr10 = from->Gpr10;
324 to->Gpr11 = from->Gpr11;
325 to->Gpr12 = from->Gpr12;
326 to->Gpr13 = from->Gpr13;
327 to->Gpr14 = from->Gpr14;
328 to->Gpr15 = from->Gpr15;
329 to->Gpr16 = from->Gpr16;
330 to->Gpr17 = from->Gpr17;
331 to->Gpr18 = from->Gpr18;
332 to->Gpr19 = from->Gpr19;
333 to->Gpr20 = from->Gpr20;
334 to->Gpr21 = from->Gpr21;
335 to->Gpr22 = from->Gpr22;
336 to->Gpr23 = from->Gpr23;
337 to->Gpr24 = from->Gpr24;
338 to->Gpr25 = from->Gpr25;
339 to->Gpr26 = from->Gpr26;
340 to->Gpr27 = from->Gpr27;
341 to->Gpr28 = from->Gpr28;
342 to->Gpr29 = from->Gpr29;
343 to->Gpr30 = from->Gpr30;
344 to->Gpr31 = from->Gpr31;
345 to->Xer = from->Xer;
346 to->Cr = from->Cr;
347 }
348 if (flags & CONTEXT_FLOATING_POINT)
349 {
350 to->Fpr0 = from->Fpr0;
351 to->Fpr1 = from->Fpr1;
352 to->Fpr2 = from->Fpr2;
353 to->Fpr3 = from->Fpr3;
354 to->Fpr4 = from->Fpr4;
355 to->Fpr5 = from->Fpr5;
356 to->Fpr6 = from->Fpr6;
357 to->Fpr7 = from->Fpr7;
358 to->Fpr8 = from->Fpr8;
359 to->Fpr9 = from->Fpr9;
360 to->Fpr10 = from->Fpr10;
361 to->Fpr11 = from->Fpr11;
362 to->Fpr12 = from->Fpr12;
363 to->Fpr13 = from->Fpr13;
364 to->Fpr14 = from->Fpr14;
365 to->Fpr15 = from->Fpr15;
366 to->Fpr16 = from->Fpr16;
367 to->Fpr17 = from->Fpr17;
368 to->Fpr18 = from->Fpr18;
369 to->Fpr19 = from->Fpr19;
370 to->Fpr20 = from->Fpr20;
371 to->Fpr21 = from->Fpr21;
372 to->Fpr22 = from->Fpr22;
373 to->Fpr23 = from->Fpr23;
374 to->Fpr24 = from->Fpr24;
375 to->Fpr25 = from->Fpr25;
376 to->Fpr26 = from->Fpr26;
377 to->Fpr27 = from->Fpr27;
378 to->Fpr28 = from->Fpr28;
379 to->Fpr29 = from->Fpr29;
380 to->Fpr30 = from->Fpr30;
381 to->Fpr31 = from->Fpr31;
382 to->Fpscr = from->Fpscr;
383 }
384 }
385
386
387 /***********************************************************************
388 * context_to_server
389 *
390 * Convert a register context to the server format.
391 */
392 NTSTATUS context_to_server( context_t *to, const CONTEXT *from )
393 {
394 DWORD flags = from->ContextFlags; /* no CPU id? */
395
396 memset( to, 0, sizeof(*to) );
397 to->cpu = CPU_POWERPC;
398
399 if (flags & CONTEXT_CONTROL)
400 {
401 to->flags |= SERVER_CTX_CONTROL;
402 to->ctl.powerpc_regs.iar = from->Iar;
403 to->ctl.powerpc_regs.msr = from->Msr;
404 to->ctl.powerpc_regs.ctr = from->Ctr;
405 to->ctl.powerpc_regs.lr = from->Lr;
406 to->ctl.powerpc_regs.dar = from->Dar;
407 to->ctl.powerpc_regs.dsisr = from->Dsisr;
408 to->ctl.powerpc_regs.trap = from->Trap;
409 }
410 if (flags & CONTEXT_INTEGER)
411 {
412 to->flags |= SERVER_CTX_INTEGER;
413 to->integer.powerpc_regs.gpr[0] = from->Gpr0;
414 to->integer.powerpc_regs.gpr[1] = from->Gpr1;
415 to->integer.powerpc_regs.gpr[2] = from->Gpr2;
416 to->integer.powerpc_regs.gpr[3] = from->Gpr3;
417 to->integer.powerpc_regs.gpr[4] = from->Gpr4;
418 to->integer.powerpc_regs.gpr[5] = from->Gpr5;
419 to->integer.powerpc_regs.gpr[6] = from->Gpr6;
420 to->integer.powerpc_regs.gpr[7] = from->Gpr7;
421 to->integer.powerpc_regs.gpr[8] = from->Gpr8;
422 to->integer.powerpc_regs.gpr[9] = from->Gpr9;
423 to->integer.powerpc_regs.gpr[10] = from->Gpr10;
424 to->integer.powerpc_regs.gpr[11] = from->Gpr11;
425 to->integer.powerpc_regs.gpr[12] = from->Gpr12;
426 to->integer.powerpc_regs.gpr[13] = from->Gpr13;
427 to->integer.powerpc_regs.gpr[14] = from->Gpr14;
428 to->integer.powerpc_regs.gpr[15] = from->Gpr15;
429 to->integer.powerpc_regs.gpr[16] = from->Gpr16;
430 to->integer.powerpc_regs.gpr[17] = from->Gpr17;
431 to->integer.powerpc_regs.gpr[18] = from->Gpr18;
432 to->integer.powerpc_regs.gpr[19] = from->Gpr19;
433 to->integer.powerpc_regs.gpr[20] = from->Gpr20;
434 to->integer.powerpc_regs.gpr[21] = from->Gpr21;
435 to->integer.powerpc_regs.gpr[22] = from->Gpr22;
436 to->integer.powerpc_regs.gpr[23] = from->Gpr23;
437 to->integer.powerpc_regs.gpr[24] = from->Gpr24;
438 to->integer.powerpc_regs.gpr[25] = from->Gpr25;
439 to->integer.powerpc_regs.gpr[26] = from->Gpr26;
440 to->integer.powerpc_regs.gpr[27] = from->Gpr27;
441 to->integer.powerpc_regs.gpr[28] = from->Gpr28;
442 to->integer.powerpc_regs.gpr[29] = from->Gpr29;
443 to->integer.powerpc_regs.gpr[30] = from->Gpr30;
444 to->integer.powerpc_regs.gpr[31] = from->Gpr31;
445 to->integer.powerpc_regs.xer = from->Xer;
446 to->integer.powerpc_regs.cr = from->Cr;
447 }
448 if (flags & CONTEXT_FLOATING_POINT)
449 {
450 to->flags |= SERVER_CTX_FLOATING_POINT;
451 to->fp.powerpc_regs.fpr[0] = from->Fpr0;
452 to->fp.powerpc_regs.fpr[1] = from->Fpr1;
453 to->fp.powerpc_regs.fpr[2] = from->Fpr2;
454 to->fp.powerpc_regs.fpr[3] = from->Fpr3;
455 to->fp.powerpc_regs.fpr[4] = from->Fpr4;
456 to->fp.powerpc_regs.fpr[5] = from->Fpr5;
457 to->fp.powerpc_regs.fpr[6] = from->Fpr6;
458 to->fp.powerpc_regs.fpr[7] = from->Fpr7;
459 to->fp.powerpc_regs.fpr[8] = from->Fpr8;
460 to->fp.powerpc_regs.fpr[9] = from->Fpr9;
461 to->fp.powerpc_regs.fpr[10] = from->Fpr10;
462 to->fp.powerpc_regs.fpr[11] = from->Fpr11;
463 to->fp.powerpc_regs.fpr[12] = from->Fpr12;
464 to->fp.powerpc_regs.fpr[13] = from->Fpr13;
465 to->fp.powerpc_regs.fpr[14] = from->Fpr14;
466 to->fp.powerpc_regs.fpr[15] = from->Fpr15;
467 to->fp.powerpc_regs.fpr[16] = from->Fpr16;
468 to->fp.powerpc_regs.fpr[17] = from->Fpr17;
469 to->fp.powerpc_regs.fpr[18] = from->Fpr18;
470 to->fp.powerpc_regs.fpr[19] = from->Fpr19;
471 to->fp.powerpc_regs.fpr[20] = from->Fpr20;
472 to->fp.powerpc_regs.fpr[21] = from->Fpr21;
473 to->fp.powerpc_regs.fpr[22] = from->Fpr22;
474 to->fp.powerpc_regs.fpr[23] = from->Fpr23;
475 to->fp.powerpc_regs.fpr[24] = from->Fpr24;
476 to->fp.powerpc_regs.fpr[25] = from->Fpr25;
477 to->fp.powerpc_regs.fpr[26] = from->Fpr26;
478 to->fp.powerpc_regs.fpr[27] = from->Fpr27;
479 to->fp.powerpc_regs.fpr[28] = from->Fpr28;
480 to->fp.powerpc_regs.fpr[29] = from->Fpr29;
481 to->fp.powerpc_regs.fpr[30] = from->Fpr30;
482 to->fp.powerpc_regs.fpr[31] = from->Fpr31;
483 to->fp.powerpc_regs.fpscr = from->Fpscr;
484 }
485 return STATUS_SUCCESS;
486 }
487
488
489 /***********************************************************************
490 * context_from_server
491 *
492 * Convert a register context from the server format.
493 */
494 NTSTATUS context_from_server( CONTEXT *to, const context_t *from )
495 {
496 if (from->cpu != CPU_POWERPC) return STATUS_INVALID_PARAMETER;
497
498 to->ContextFlags = 0; /* no CPU id? */
499 if (from->flags & SERVER_CTX_CONTROL)
500 {
501 to->ContextFlags |= CONTEXT_CONTROL;
502 to->Msr = from->ctl.powerpc_regs.msr;
503 to->Ctr = from->ctl.powerpc_regs.ctr;
504 to->Iar = from->ctl.powerpc_regs.iar;
505 to->Lr = from->ctl.powerpc_regs.lr;
506 to->Dar = from->ctl.powerpc_regs.dar;
507 to->Dsisr = from->ctl.powerpc_regs.dsisr;
508 to->Trap = from->ctl.powerpc_regs.trap;
509 }
510 if (from->flags & SERVER_CTX_INTEGER)
511 {
512 to->ContextFlags |= CONTEXT_INTEGER;
513 to->Gpr0 = from->integer.powerpc_regs.gpr[0];
514 to->Gpr1 = from->integer.powerpc_regs.gpr[1];
515 to->Gpr2 = from->integer.powerpc_regs.gpr[2];
516 to->Gpr3 = from->integer.powerpc_regs.gpr[3];
517 to->Gpr4 = from->integer.powerpc_regs.gpr[4];
518 to->Gpr5 = from->integer.powerpc_regs.gpr[5];
519 to->Gpr6 = from->integer.powerpc_regs.gpr[6];
520 to->Gpr7 = from->integer.powerpc_regs.gpr[7];
521 to->Gpr8 = from->integer.powerpc_regs.gpr[8];
522 to->Gpr9 = from->integer.powerpc_regs.gpr[9];
523 to->Gpr10 = from->integer.powerpc_regs.gpr[10];
524 to->Gpr11 = from->integer.powerpc_regs.gpr[11];
525 to->Gpr12 = from->integer.powerpc_regs.gpr[12];
526 to->Gpr13 = from->integer.powerpc_regs.gpr[13];
527 to->Gpr14 = from->integer.powerpc_regs.gpr[14];
528 to->Gpr15 = from->integer.powerpc_regs.gpr[15];
529 to->Gpr16 = from->integer.powerpc_regs.gpr[16];
530 to->Gpr17 = from->integer.powerpc_regs.gpr[17];
531 to->Gpr18 = from->integer.powerpc_regs.gpr[18];
532 to->Gpr19 = from->integer.powerpc_regs.gpr[19];
533 to->Gpr20 = from->integer.powerpc_regs.gpr[20];
534 to->Gpr21 = from->integer.powerpc_regs.gpr[21];
535 to->Gpr22 = from->integer.powerpc_regs.gpr[22];
536 to->Gpr23 = from->integer.powerpc_regs.gpr[23];
537 to->Gpr24 = from->integer.powerpc_regs.gpr[24];
538 to->Gpr25 = from->integer.powerpc_regs.gpr[25];
539 to->Gpr26 = from->integer.powerpc_regs.gpr[26];
540 to->Gpr27 = from->integer.powerpc_regs.gpr[27];
541 to->Gpr28 = from->integer.powerpc_regs.gpr[28];
542 to->Gpr29 = from->integer.powerpc_regs.gpr[29];
543 to->Gpr30 = from->integer.powerpc_regs.gpr[30];
544 to->Gpr31 = from->integer.powerpc_regs.gpr[31];
545 to->Xer = from->integer.powerpc_regs.xer;
546 to->Cr = from->integer.powerpc_regs.cr;
547 }
548 if (from->flags & SERVER_CTX_FLOATING_POINT)
549 {
550 to->ContextFlags |= CONTEXT_FLOATING_POINT;
551 to->Fpr0 = from->fp.powerpc_regs.fpr[0];
552 to->Fpr1 = from->fp.powerpc_regs.fpr[1];
553 to->Fpr2 = from->fp.powerpc_regs.fpr[2];
554 to->Fpr3 = from->fp.powerpc_regs.fpr[3];
555 to->Fpr4 = from->fp.powerpc_regs.fpr[4];
556 to->Fpr5 = from->fp.powerpc_regs.fpr[5];
557 to->Fpr6 = from->fp.powerpc_regs.fpr[6];
558 to->Fpr7 = from->fp.powerpc_regs.fpr[7];
559 to->Fpr8 = from->fp.powerpc_regs.fpr[8];
560 to->Fpr9 = from->fp.powerpc_regs.fpr[9];
561 to->Fpr10 = from->fp.powerpc_regs.fpr[10];
562 to->Fpr11 = from->fp.powerpc_regs.fpr[11];
563 to->Fpr12 = from->fp.powerpc_regs.fpr[12];
564 to->Fpr13 = from->fp.powerpc_regs.fpr[13];
565 to->Fpr14 = from->fp.powerpc_regs.fpr[14];
566 to->Fpr15 = from->fp.powerpc_regs.fpr[15];
567 to->Fpr16 = from->fp.powerpc_regs.fpr[16];
568 to->Fpr17 = from->fp.powerpc_regs.fpr[17];
569 to->Fpr18 = from->fp.powerpc_regs.fpr[18];
570 to->Fpr19 = from->fp.powerpc_regs.fpr[19];
571 to->Fpr20 = from->fp.powerpc_regs.fpr[20];
572 to->Fpr21 = from->fp.powerpc_regs.fpr[21];
573 to->Fpr22 = from->fp.powerpc_regs.fpr[22];
574 to->Fpr23 = from->fp.powerpc_regs.fpr[23];
575 to->Fpr24 = from->fp.powerpc_regs.fpr[24];
576 to->Fpr25 = from->fp.powerpc_regs.fpr[25];
577 to->Fpr26 = from->fp.powerpc_regs.fpr[26];
578 to->Fpr27 = from->fp.powerpc_regs.fpr[27];
579 to->Fpr28 = from->fp.powerpc_regs.fpr[28];
580 to->Fpr29 = from->fp.powerpc_regs.fpr[29];
581 to->Fpr30 = from->fp.powerpc_regs.fpr[30];
582 to->Fpr31 = from->fp.powerpc_regs.fpr[31];
583 to->Fpscr = from->fp.powerpc_regs.fpscr;
584 }
585 return STATUS_SUCCESS;
586 }
587
588
589 /***********************************************************************
590 * NtSetContextThread (NTDLL.@)
591 * ZwSetContextThread (NTDLL.@)
592 */
593 NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
594 {
595 NTSTATUS ret;
596 BOOL self;
597 context_t server_context;
598
599 context_to_server( &server_context, context );
600 ret = set_thread_context( handle, &server_context, &self );
601 if (self && ret == STATUS_SUCCESS) set_cpu_context( context );
602 return ret;
603 }
604
605
606 /***********************************************************************
607 * NtGetContextThread (NTDLL.@)
608 * ZwGetContextThread (NTDLL.@)
609 */
610 NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
611 {
612 NTSTATUS ret;
613 DWORD needed_flags = context->ContextFlags;
614 BOOL self = (handle == GetCurrentThread());
615
616 if (!self)
617 {
618 context_t server_context;
619 unsigned int server_flags = get_server_context_flags( context->ContextFlags );
620
621 if ((ret = get_thread_context( handle, &server_context, server_flags, &self ))) return ret;
622 if ((ret = context_from_server( context, &server_context ))) return ret;
623 needed_flags &= ~context->ContextFlags;
624 }
625
626 if (self && needed_flags)
627 {
628 CONTEXT ctx;
629 RtlCaptureContext( &ctx );
630 copy_context( context, &ctx, ctx.ContextFlags & needed_flags );
631 context->ContextFlags |= ctx.ContextFlags & needed_flags;
632 }
633 return STATUS_SUCCESS;
634 }
635
636
637 /**********************************************************************
638 * call_stack_handlers
639 *
640 * Call the stack handlers chain.
641 */
642 static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *context )
643 {
644 EXCEPTION_POINTERS ptrs;
645
646 FIXME( "not implemented on PowerPC\n" );
647
648 /* hack: call unhandled exception filter directly */
649 ptrs.ExceptionRecord = rec;
650 ptrs.ContextRecord = context;
651 call_unhandled_exception_filter( &ptrs );
652 return STATUS_UNHANDLED_EXCEPTION;
653 }
654
655
656 /*******************************************************************
657 * raise_exception
658 *
659 * Implementation of NtRaiseException.
660 */
661 static NTSTATUS raise_exception( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
662 {
663 NTSTATUS status;
664
665 if (first_chance)
666 {
667 DWORD c;
668
669 TRACE( "code=%x flags=%x addr=%p ip=%x tid=%04x\n",
670 rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
671 context->Iar, GetCurrentThreadId() );
672 for (c = 0; c < rec->NumberParameters; c++)
673 TRACE( " info[%d]=%08lx\n", c, rec->ExceptionInformation[c] );
674 if (rec->ExceptionCode == EXCEPTION_WINE_STUB)
675 {
676 if (rec->ExceptionInformation[1] >> 16)
677 MESSAGE( "wine: Call from %p to unimplemented function %s.%s, aborting\n",
678 rec->ExceptionAddress,
679 (char*)rec->ExceptionInformation[0], (char*)rec->ExceptionInformation[1] );
680 else
681 MESSAGE( "wine: Call from %p to unimplemented function %s.%ld, aborting\n",
682 rec->ExceptionAddress,
683 (char*)rec->ExceptionInformation[0], rec->ExceptionInformation[1] );
684 }
685 else
686 {
687 /* FIXME: dump context */
688 }
689
690 status = send_debug_event( rec, TRUE, context );
691 if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
692 return STATUS_SUCCESS;
693
694 if (call_vectored_handlers( rec, context ) == EXCEPTION_CONTINUE_EXECUTION)
695 return STATUS_SUCCESS;
696
697 if ((status = call_stack_handlers( rec, context )) != STATUS_UNHANDLED_EXCEPTION)
698 return status;
699 }
700
701 /* last chance exception */
702
703 status = send_debug_event( rec, FALSE, context );
704 if (status != DBG_CONTINUE)
705 {
706 if (rec->ExceptionFlags & EH_STACK_INVALID)
707 ERR("Exception frame is not in stack limits => unable to dispatch exception.\n");
708 else if (rec->ExceptionCode == STATUS_NONCONTINUABLE_EXCEPTION)
709 ERR("Process attempted to continue execution after noncontinuable exception.\n");
710 else
711 ERR("Unhandled exception code %x flags %x addr %p\n",
712 rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress );
713 NtTerminateProcess( NtCurrentProcess(), rec->ExceptionCode );
714 }
715 return STATUS_SUCCESS;
716 }
717
718
719 /**********************************************************************
720 * segv_handler
721 *
722 * Handler for SIGSEGV and related errors.
723 */
724 static void segv_handler( int signal, siginfo_t *siginfo, void *sigcontext )
725 {
726 EXCEPTION_RECORD rec;
727 CONTEXT context;
728 NTSTATUS status;
729
730 save_context( &context, sigcontext );
731
732 rec.ExceptionRecord = NULL;
733 rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
734 rec.ExceptionAddress = (LPVOID)context.Iar;
735 rec.NumberParameters = 0;
736
737 switch (signal)
738 {
739 case SIGSEGV:
740 switch (siginfo->si_code & 0xffff)
741 {
742 case SEGV_MAPERR:
743 case SEGV_ACCERR:
744 rec.NumberParameters = 2;
745 rec.ExceptionInformation[0] = 0; /* FIXME ? */
746 rec.ExceptionInformation[1] = (ULONG_PTR)siginfo->si_addr;
747 if (!(rec.ExceptionCode = virtual_handle_fault(siginfo->si_addr, rec.ExceptionInformation[0], FALSE)))
748 goto done;
749 break;
750 default:
751 FIXME("Unhandled SIGSEGV/%x\n",siginfo->si_code);
752 break;
753 }
754 break;
755 case SIGBUS:
756 switch (siginfo->si_code & 0xffff)
757 {
758 case BUS_ADRALN:
759 rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
760 break;
761 #ifdef BUS_ADRERR
762 case BUS_ADRERR:
763 #endif
764 #ifdef BUS_OBJERR
765 case BUS_OBJERR:
766 /* FIXME: correct for all cases ? */
767 rec.NumberParameters = 2;
768 rec.ExceptionInformation[0] = 0; /* FIXME ? */
769 rec.ExceptionInformation[1] = (ULONG_PTR)siginfo->si_addr;
770 if (!(rec.ExceptionCode = virtual_handle_fault(siginfo->si_addr, rec.ExceptionInformation[0], FALSE)))
771 goto done;
772 break;
773 #endif
774 default:
775 FIXME("Unhandled SIGBUS/%x\n",siginfo->si_code);
776 break;
777 }
778 break;
779 case SIGILL:
780 switch (siginfo->si_code & 0xffff)
781 {
782 case ILL_ILLOPC: /* illegal opcode */
783 #ifdef ILL_ILLOPN
784 case ILL_ILLOPN: /* illegal operand */
785 #endif
786 #ifdef ILL_ILLADR
787 case ILL_ILLADR: /* illegal addressing mode */
788 #endif
789 #ifdef ILL_ILLTRP
790 case ILL_ILLTRP: /* illegal trap */
791 #endif
792 #ifdef ILL_COPROC
793 case ILL_COPROC: /* coprocessor error */
794 #endif
795 rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
796 break;
797 case ILL_PRVOPC: /* privileged opcode */
798 #ifdef ILL_PRVREG
799 case ILL_PRVREG: /* privileged register */
800 #endif
801 rec.ExceptionCode = EXCEPTION_PRIV_INSTRUCTION;
802 break;
803 #ifdef ILL_BADSTK
804 case ILL_BADSTK: /* internal stack error */
805 rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
806 break;
807 #endif
808 default:
809 FIXME("Unhandled SIGILL/%x\n", siginfo->si_code);
810 break;
811 }
812 break;
813 }
814 status = raise_exception( &rec, &context, TRUE );
815 if (status) raise_status( status, &rec );
816 done:
817 restore_context( &context, sigcontext );
818 }
819
820 /**********************************************************************
821 * trap_handler
822 *
823 * Handler for SIGTRAP.
824 */
825 static void trap_handler( int signal, siginfo_t *siginfo, void *sigcontext )
826 {
827 EXCEPTION_RECORD rec;
828 CONTEXT context;
829 NTSTATUS status;
830
831 save_context( &context, sigcontext );
832
833 rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
834 rec.ExceptionRecord = NULL;
835 rec.ExceptionAddress = (LPVOID)context.Iar;
836 rec.NumberParameters = 0;
837
838 /* FIXME: check if we might need to modify PC */
839 switch (siginfo->si_code & 0xffff)
840 {
841 #ifdef TRAP_BRKPT
842 case TRAP_BRKPT:
843 rec.ExceptionCode = EXCEPTION_BREAKPOINT;
844 break;
845 #endif
846 #ifdef TRAP_TRACE
847 case TRAP_TRACE:
848 rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
849 break;
850 #endif
851 default:
852 FIXME("Unhandled SIGTRAP/%x\n", siginfo->si_code);
853 break;
854 }
855 status = raise_exception( &rec, &context, TRUE );
856 if (status) raise_status( status, &rec );
857 restore_context( &context, sigcontext );
858 }
859
860 /**********************************************************************
861 * fpe_handler
862 *
863 * Handler for SIGFPE.
864 */
865 static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
866 {
867 EXCEPTION_RECORD rec;
868 CONTEXT context;
869 NTSTATUS status;
870
871 save_fpu( &context, sigcontext );
872 save_context( &context, sigcontext );
873
874 switch (siginfo->si_code & 0xffff )
875 {
876 #ifdef FPE_FLTSUB
877 case FPE_FLTSUB:
878 rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
879 break;
880 #endif
881 #ifdef FPE_INTDIV
882 case FPE_INTDIV:
883 rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
884 break;
885 #endif
886 #ifdef FPE_INTOVF
887 case FPE_INTOVF:
888 rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
889 break;
890 #endif
891 #ifdef FPE_FLTDIV
892 case FPE_FLTDIV:
893 rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
894 break;
895 #endif
896 #ifdef FPE_FLTOVF
897 case FPE_FLTOVF:
898 rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
899 break;
900 #endif
901 #ifdef FPE_FLTUND
902 case FPE_FLTUND:
903 rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
904 break;
905 #endif
906 #ifdef FPE_FLTRES
907 case FPE_FLTRES:
908 rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
909 break;
910 #endif
911 #ifdef FPE_FLTINV
912 case FPE_FLTINV:
913 #endif
914 default:
915 rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
916 break;
917 }
918 rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
919 rec.ExceptionRecord = NULL;
920 rec.ExceptionAddress = (LPVOID)context.Iar;
921 rec.NumberParameters = 0;
922 status = raise_exception( &rec, &context, TRUE );
923 if (status) raise_status( status, &rec );
924
925 restore_context( &context, sigcontext );
926 restore_fpu( &context, sigcontext );
927 }
928
929 /**********************************************************************
930 * int_handler
931 *
932 * Handler for SIGINT.
933 */
934 static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
935 {
936 if (!dispatch_signal(SIGINT))
937 {
938 EXCEPTION_RECORD rec;
939 CONTEXT context;
940 NTSTATUS status;
941
942 save_context( &context, sigcontext );
943 rec.ExceptionCode = CONTROL_C_EXIT;
944 rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
945 rec.ExceptionRecord = NULL;
946 rec.ExceptionAddress = (LPVOID)context.Iar;
947 rec.NumberParameters = 0;
948 status = raise_exception( &rec, &context, TRUE );
949 if (status) raise_status( status, &rec );
950 restore_context( &context, sigcontext );
951 }
952 }
953
954
955 /**********************************************************************
956 * abrt_handler
957 *
958 * Handler for SIGABRT.
959 */
960 static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext )
961 {
962 EXCEPTION_RECORD rec;
963 CONTEXT context;
964 NTSTATUS status;
965
966 save_context( &context, sigcontext );
967 rec.ExceptionCode = EXCEPTION_WINE_ASSERTION;
968 rec.ExceptionFlags = EH_NONCONTINUABLE;
969 rec.ExceptionRecord = NULL;
970 rec.ExceptionAddress = (LPVOID)context.Iar;
971 rec.NumberParameters = 0;
972 status = raise_exception( &rec, &context, TRUE );
973 if (status) raise_status( status, &rec );
974 restore_context( &context, sigcontext );
975 }
976
977
978 /**********************************************************************
979 * quit_handler
980 *
981 * Handler for SIGQUIT.
982 */
983 static void quit_handler( int signal, siginfo_t *siginfo, void *sigcontext )
984 {
985 abort_thread(0);
986 }
987
988
989 /**********************************************************************
990 * usr1_handler
991 *
992 * Handler for SIGUSR1, used to signal a thread that it got suspended.
993 */
994 static void usr1_handler( int signal, siginfo_t *siginfo, void *sigcontext )
995 {
996 CONTEXT context;
997
998 save_context( &context, sigcontext );
999 wait_suspend( &context );
1000 restore_context( &context, sigcontext );
1001 }
1002
1003
1004 /***********************************************************************
1005 * __wine_set_signal_handler (NTDLL.@)
1006 */
1007 int CDECL __wine_set_signal_handler(unsigned int sig, wine_signal_handler wsh)
1008 {
1009 if (sig >= ARRAY_SIZE(handlers)) return -1;
1010 if (handlers[sig] != NULL) return -2;
1011 handlers[sig] = wsh;
1012 return 0;
1013 }
1014
1015
1016 /**********************************************************************
1017 * signal_alloc_thread
1018 */
1019 NTSTATUS signal_alloc_thread( TEB **teb )
1020 {
1021 static size_t sigstack_alignment;
1022 SIZE_T size;
1023 NTSTATUS status;
1024
1025 if (!sigstack_alignment)
1026 {
1027 size_t min_size = page_size; /* this is just for the TEB, we don't use a signal stack yet */
1028 /* find the first power of two not smaller than min_size */
1029 while ((1u << sigstack_alignment) < min_size) sigstack_alignment++;
1030 assert( sizeof(TEB) <= min_size );
1031 }
1032
1033 size = 1 << sigstack_alignment;
1034 *teb = NULL;
1035 if (!(status = virtual_alloc_aligned( (void **)teb, 0, &size, MEM_COMMIT | MEM_TOP_DOWN,
1036 PAGE_READWRITE, sigstack_alignment )))
1037 {
1038 (*teb)->Tib.Self = &(*teb)->Tib;
1039 (*teb)->Tib.ExceptionList = (void *)~0UL;
1040 }
1041 return status;
1042 }
1043
1044
1045 /**********************************************************************
1046 * signal_free_thread
1047 */
1048 void signal_free_thread( TEB *teb )
1049 {
1050 SIZE_T size = 0;
1051
1052 NtFreeVirtualMemory( NtCurrentProcess(), (void **)&teb, &size, MEM_RELEASE );
1053 }
1054
1055
1056 /**********************************************************************
1057 * signal_init_thread
1058 */
1059 void signal_init_thread( TEB *teb )
1060 {
1061 static BOOL init_done;
1062
1063 if (!init_done)
1064 {
1065 pthread_key_create( &teb_key, NULL );
1066 init_done = TRUE;
1067 }
1068 pthread_setspecific( teb_key, teb );
1069 }
1070
1071
1072 /**********************************************************************
1073 * signal_init_process
1074 */
1075 void signal_init_process(void)
1076 {
1077 struct sigaction sig_act;
1078
1079 sig_act.sa_mask = server_block_set;
1080 sig_act.sa_flags = SA_RESTART | SA_SIGINFO;
1081
1082 sig_act.sa_sigaction = int_handler;
1083 if (sigaction( SIGINT, &sig_act, NULL ) == -1) goto error;
1084 sig_act.sa_sigaction = fpe_handler;
1085 if (sigaction( SIGFPE, &sig_act, NULL ) == -1) goto error;
1086 sig_act.sa_sigaction = abrt_handler;
1087 if (sigaction( SIGABRT, &sig_act, NULL ) == -1) goto error;
1088 sig_act.sa_sigaction = quit_handler;
1089 if (sigaction( SIGQUIT, &sig_act, NULL ) == -1) goto error;
1090 sig_act.sa_sigaction = usr1_handler;
1091 if (sigaction( SIGUSR1, &sig_act, NULL ) == -1) goto error;
1092
1093 sig_act.sa_sigaction = segv_handler;
1094 if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;
1095 if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
1096 #ifdef SIGBUS
1097 if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
1098 #endif
1099
1100 #ifdef SIGTRAP
1101 sig_act.sa_sigaction = trap_handler;
1102 if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error;
1103 #endif
1104 return;
1105
1106 error:
1107 perror("sigaction");
1108 exit(1);
1109 }
1110
1111
1112 /***********************************************************************
1113 * RtlUnwind (NTDLL.@)
1114 */
1115 void WINAPI RtlUnwind( PVOID pEndFrame, PVOID targetIp, PEXCEPTION_RECORD pRecord, PVOID retval )
1116 {
1117 FIXME( "Not implemented on PowerPC\n" );
1118 }
1119
1120 /*******************************************************************
1121 * NtRaiseException (NTDLL.@)
1122 */
1123 NTSTATUS WINAPI NtRaiseException( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
1124 {
1125 NTSTATUS status = raise_exception( rec, context, first_chance );
1126 if (status == STATUS_SUCCESS) NtSetContextThread( GetCurrentThread(), context );
1127 return status;
1128 }
1129
1130 /***********************************************************************
1131 * RtlRaiseException (NTDLL.@)
1132 */
1133 void WINAPI RtlRaiseException( EXCEPTION_RECORD *rec )
1134 {
1135 CONTEXT context;
1136 NTSTATUS status;
1137
1138 RtlCaptureContext( &context );
1139 rec->ExceptionAddress = (void *)context.Iar;
1140 status = raise_exception( rec, &context, TRUE );
1141 if (status) raise_status( status, rec );
1142 }
1143
1144 /*************************************************************************
1145 * RtlCaptureStackBackTrace (NTDLL.@)
1146 */
1147 USHORT WINAPI RtlCaptureStackBackTrace( ULONG skip, ULONG count, PVOID *buffer, ULONG *hash )
1148 {
1149 FIXME( "(%d, %d, %p, %p) stub!\n", skip, count, buffer, hash );
1150 return 0;
1151 }
1152
1153 /***********************************************************************
1154 * call_thread_entry_point
1155 */
1156 static void WINAPI call_thread_entry_point( LPTHREAD_START_ROUTINE entry, void *arg )
1157 {
1158 __TRY
1159 {
1160 TRACE_(relay)( "\1Starting thread proc %p (arg=%p)\n", entry, arg );
1161 RtlExitUserThread( entry( arg ));
1162 }
1163 __EXCEPT(call_unhandled_exception_filter)
1164 {
1165 NtTerminateThread( GetCurrentThread(), GetExceptionCode() );
1166 }
1167 __ENDTRY
1168 abort(); /* should not be reached */
1169 }
1170
1171 typedef void (WINAPI *thread_start_func)(LPTHREAD_START_ROUTINE,void *);
1172
1173 struct startup_info
1174 {
1175 thread_start_func start;
1176 LPTHREAD_START_ROUTINE entry;
1177 void *arg;
1178 BOOL suspend;
1179 };
1180
1181 /* FIXME: should set the full context instead */
1182 extern void DECLSPEC_NORETURN switch_to_stack( void (*func)(void *), void *arg, void *stack );
1183 __ASM_GLOBAL_FUNC( switch_to_stack,
1184 "subi 5, 5, 16\n\t" /* reserve space on new stack */
1185 "mtctr 3\n\t" /* func -> ctr */
1186 "mr 3,4\n\t" /* args -> function param 1 (r3) */
1187 "mr 1,5\n\t" /* stack */
1188 "li 0, 0\n\t" /* zero */
1189 "stw 0, 0(1)\n\t" /* bottom of stack */
1190 "stwu 1, -16(1)\n\t" /* create a frame for this function */
1191 "bctrl" ) /* call ctr */
1192
1193 /***********************************************************************
1194 * thread_startup
1195 */
1196 static void thread_startup( void *param )
1197 {
1198 CONTEXT context = { 0 };
1199 struct startup_info *info = param;
1200
1201 /* build the initial context */
1202 context.ContextFlags = CONTEXT_FULL;
1203 context.Gpr1 = (DWORD)NtCurrentTeb()->Tib.StackBase;
1204 context.Gpr3 = (DWORD)info->entry;
1205 context.Gpr4 = (DWORD)info->arg;
1206 context.Iar = (DWORD)info->start;
1207
1208 if (info->suspend) wait_suspend( &context );
1209 LdrInitializeThunk( &context, (void **)&context.Gpr3, 0, 0 );
1210
1211 ((thread_start_func)context.Iar)( (LPTHREAD_START_ROUTINE)context.Gpr3, (void *)context.Gpr4 );
1212 }
1213
1214 /***********************************************************************
1215 * signal_start_thread
1216 *
1217 * Thread startup sequence:
1218 * signal_start_thread()
1219 * -> thread_startup()
1220 * -> call_thread_entry_point()
1221 */
1222 void signal_start_thread( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend )
1223 {
1224 struct startup_info info = { call_thread_entry_point, entry, arg, suspend };
1225 switch_to_stack( thread_startup, &info, NtCurrentTeb()->Tib.StackBase );
1226 }
1227
1228 /**********************************************************************
1229 * signal_start_process
1230 *
1231 * Process startup sequence:
1232 * signal_start_process()
1233 * -> thread_startup()
1234 * -> kernel32_start_process()
1235 */
1236 void signal_start_process( LPTHREAD_START_ROUTINE entry, BOOL suspend )
1237 {
1238 struct startup_info info = { kernel32_start_process, entry, NtCurrentTeb()->Peb, suspend };
1239 switch_to_stack( thread_startup, &info, NtCurrentTeb()->Tib.StackBase );
1240 }
1241
1242 /***********************************************************************
1243 * signal_exit_thread
1244 */
1245 void signal_exit_thread( int status )
1246 {
1247 exit_thread( status );
1248 }
1249
1250 /***********************************************************************
1251 * signal_exit_process
1252 */
1253 void signal_exit_process( int status )
1254 {
1255 exit( status );
1256 }
1257
1258 /**********************************************************************
1259 * DbgBreakPoint (NTDLL.@)
1260 */
1261 void WINAPI DbgBreakPoint(void)
1262 {
1263 kill(getpid(), SIGTRAP);
1264 }
1265
1266 /**********************************************************************
1267 * DbgUserBreakPoint (NTDLL.@)
1268 */
1269 void WINAPI DbgUserBreakPoint(void)
1270 {
1271 kill(getpid(), SIGTRAP);
1272 }
1273
1274 /**********************************************************************
1275 * NtCurrentTeb (NTDLL.@)
1276 */
1277 TEB * WINAPI NtCurrentTeb(void)
1278 {
1279 return pthread_getspecific( teb_key );
1280 }
1281
1282 #endif /* __powerpc__ */
Windows API implementation