dlls/ntdll/signal_sparc.c

   1 /*
   2  * Sparc signal handling routines
   3  *
   4  * Copyright 1999 Ulrich Weigand
   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 __sparc__
  22
  23 #include "config.h"
  24 #include "wine/port.h"
  25
  26 #include <assert.h>
  27 #include <signal.h>
  28 #include <stdlib.h>
  29 #ifdef HAVE_UNISTD_H
  30 # include <unistd.h>
  31 #endif
  32 #include <stdarg.h>
  33 #include <stdio.h>
  34 #include <sys/ucontext.h>
  35
  36 #include "ntstatus.h"
  37 #define WIN32_NO_STATUS
  38 #include "windef.h"
  39 #include "winternl.h"
  40 #include "winnt.h"
  41
  42 #include "wine/exception.h"
  43 #include "ntdll_misc.h"
  44
  45 #include "wine/debug.h"
  46
  47 WINE_DEFAULT_DEBUG_CHANNEL(seh);
  48
  49 static pthread_key_t teb_key;
  50
  51 typedef int (*wine_signal_handler)(unsigned int sig);
  52
  53 static wine_signal_handler handlers[256];
  54
  55 /***********************************************************************
  56  *           dispatch_signal
  57  */
  58 static inline int dispatch_signal(unsigned int sig)
  59 {
  60     if (handlers[sig] == NULL) return 0;
  61     return handlers[sig](sig);
  62 }
  63
  64
  65 /*
  66  * FIXME:  All this works only on Solaris for now
  67  */
  68
  69 /**********************************************************************
  70  *              save_context
  71  */
  72 static void save_context( CONTEXT *context, ucontext_t *ucontext )
  73 {
  74     context->ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER;
  75
  76     /* Special registers */
  77     context->psr = ucontext->uc_mcontext.gregs[REG_PSR];
  78     context->pc  = ucontext->uc_mcontext.gregs[REG_PC];
  79     context->npc = ucontext->uc_mcontext.gregs[REG_nPC];
  80     context->y   = ucontext->uc_mcontext.gregs[REG_Y];
  81     context->wim = 0;  /* FIXME */
  82     context->tbr = 0;  /* FIXME */
  83
  84     /* Global registers */
  85     context->g0 = 0;  /* always */
  86     context->g1 = ucontext->uc_mcontext.gregs[REG_G1];
  87     context->g2 = ucontext->uc_mcontext.gregs[REG_G2];
  88     context->g3 = ucontext->uc_mcontext.gregs[REG_G3];
  89     context->g4 = ucontext->uc_mcontext.gregs[REG_G4];
  90     context->g5 = ucontext->uc_mcontext.gregs[REG_G5];
  91     context->g6 = ucontext->uc_mcontext.gregs[REG_G6];
  92     context->g7 = ucontext->uc_mcontext.gregs[REG_G7];
  93
  94     /* Current 'out' registers */
  95     context->o0 = ucontext->uc_mcontext.gregs[REG_O0];
  96     context->o1 = ucontext->uc_mcontext.gregs[REG_O1];
  97     context->o2 = ucontext->uc_mcontext.gregs[REG_O2];
  98     context->o3 = ucontext->uc_mcontext.gregs[REG_O3];
  99     context->o4 = ucontext->uc_mcontext.gregs[REG_O4];
 100     context->o5 = ucontext->uc_mcontext.gregs[REG_O5];
 101     context->o6 = ucontext->uc_mcontext.gregs[REG_O6];
 102     context->o7 = ucontext->uc_mcontext.gregs[REG_O7];
 103
 104     /* FIXME: what if the current register window isn't saved? */
 105     if ( ucontext->uc_mcontext.gwins && ucontext->uc_mcontext.gwins->wbcnt > 0 )
 106     {
 107         /* Current 'local' registers from first register window */
 108         context->l0 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[0];
 109         context->l1 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[1];
 110         context->l2 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[2];
 111         context->l3 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[3];
 112         context->l4 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[4];
 113         context->l5 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[5];
 114         context->l6 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[6];
 115         context->l7 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[7];
 116
 117         /* Current 'in' registers from first register window */
 118         context->i0 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[0];
 119         context->i1 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[1];
 120         context->i2 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[2];
 121         context->i3 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[3];
 122         context->i4 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[4];
 123         context->i5 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[5];
 124         context->i6 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[6];
 125         context->i7 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[7];
 126     }
 127 }
 128
 129 /**********************************************************************
 130  *              restore_context
 131  */
 132 static void restore_context( CONTEXT *context, ucontext_t *ucontext )
 133 {
 134    /* FIXME */
 135 }
 136
 137 /**********************************************************************
 138  *              save_fpu
 139  */
 140 static void save_fpu( CONTEXT *context, ucontext_t *ucontext )
 141 {
 142    /* FIXME */
 143 }
 144
 145 /**********************************************************************
 146  *              restore_fpu
 147  */
 148 static void restore_fpu( CONTEXT *context, ucontext_t *ucontext )
 149 {
 150    /* FIXME */
 151 }
 152
 153
 154 /**********************************************************************
 155  *           call_stack_handlers
 156  *
 157  * Call the stack handlers chain.
 158  */
 159 static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *context )
 160 {
 161     EXCEPTION_POINTERS ptrs;
 162
 163     FIXME( "not implemented on Sparc\n" );
 164
 165     /* hack: call unhandled exception filter directly */
 166     ptrs.ExceptionRecord = rec;
 167     ptrs.ContextRecord = context;
 168     unhandled_exception_filter( &ptrs );
 169     return STATUS_UNHANDLED_EXCEPTION;
 170 }
 171
 172
 173 /*******************************************************************
 174  *              raise_exception
 175  *
 176  * Implementation of NtRaiseException.
 177  */
 178 static NTSTATUS raise_exception( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
 179 {
 180     NTSTATUS status;
 181
 182     if (first_chance)
 183     {
 184         DWORD c;
 185
 186         TRACE( "code=%x flags=%x addr=%p ip=%x tid=%04x\n",
 187                rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
 188                context->pc, GetCurrentThreadId() );
 189         for (c = 0; c < rec->NumberParameters; c++)
 190             TRACE( " info[%d]=%08lx\n", c, rec->ExceptionInformation[c] );
 191         if (rec->ExceptionCode == EXCEPTION_WINE_STUB)
 192         {
 193             if (rec->ExceptionInformation[1] >> 16)
 194                 MESSAGE( "wine: Call from %p to unimplemented function %s.%s, aborting\n",
 195                          rec->ExceptionAddress,
 196                          (char*)rec->ExceptionInformation[0], (char*)rec->ExceptionInformation[1] );
 197             else
 198                 MESSAGE( "wine: Call from %p to unimplemented function %s.%ld, aborting\n",
 199                          rec->ExceptionAddress,
 200                          (char*)rec->ExceptionInformation[0], rec->ExceptionInformation[1] );
 201         }
 202         else
 203         {
 204             /* FIXME: dump context */
 205         }
 206
 207         status = send_debug_event( rec, TRUE, context );
 208         if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
 209             return STATUS_SUCCESS;
 210
 211         if (call_vectored_handlers( rec, context ) == EXCEPTION_CONTINUE_EXECUTION)
 212             return STATUS_SUCCESS;
 213
 214         if ((status = call_stack_handlers( rec, context )) != STATUS_UNHANDLED_EXCEPTION)
 215             return status;
 216     }
 217
 218     /* last chance exception */
 219
 220     status = send_debug_event( rec, FALSE, context );
 221     if (status != DBG_CONTINUE)
 222     {
 223         if (rec->ExceptionFlags & EH_STACK_INVALID)
 224             ERR("Exception frame is not in stack limits => unable to dispatch exception.\n");
 225         else if (rec->ExceptionCode == STATUS_NONCONTINUABLE_EXCEPTION)
 226             ERR("Process attempted to continue execution after noncontinuable exception.\n");
 227         else
 228             ERR("Unhandled exception code %x flags %x addr %p\n",
 229                 rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress );
 230         NtTerminateProcess( NtCurrentProcess(), rec->ExceptionCode );
 231     }
 232     return STATUS_SUCCESS;
 233 }
 234
 235
 236 /***********************************************************************
 237  *              RtlCaptureContext (NTDLL.@)
 238  */
 239 void WINAPI RtlCaptureContext( CONTEXT *context )
 240 {
 241     FIXME("not implemented\n");
 242     memset( context, 0, sizeof(*context) );
 243 }
 244
 245
 246 /***********************************************************************
 247  *           set_cpu_context
 248  *
 249  * Set the new CPU context.
 250  */
 251 void set_cpu_context( const CONTEXT *context )
 252 {
 253     FIXME("not implemented\n");
 254 }
 255
 256
 257 /***********************************************************************
 258  *           copy_context
 259  *
 260  * Copy a register context according to the flags.
 261  */
 262 void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
 263 {
 264     flags &= ~CONTEXT_SPARC;  /* get rid of CPU id */
 265     if (flags & CONTEXT_CONTROL)
 266     {
 267         to->psr = from->psr;
 268         to->pc  = from->pc;
 269         to->npc = from->npc;
 270         to->y   = from->y;
 271         to->wim = from->wim;
 272         to->tbr = from->tbr;
 273     }
 274     if (flags & CONTEXT_INTEGER)
 275     {
 276         to->g0 = from->g0;
 277         to->g1 = from->g1;
 278         to->g2 = from->g2;
 279         to->g3 = from->g3;
 280         to->g4 = from->g4;
 281         to->g5 = from->g5;
 282         to->g6 = from->g6;
 283         to->g7 = from->g7;
 284         to->o0 = from->o0;
 285         to->o1 = from->o1;
 286         to->o2 = from->o2;
 287         to->o3 = from->o3;
 288         to->o4 = from->o4;
 289         to->o5 = from->o5;
 290         to->o6 = from->o6;
 291         to->o7 = from->o7;
 292         to->l0 = from->l0;
 293         to->l1 = from->l1;
 294         to->l2 = from->l2;
 295         to->l3 = from->l3;
 296         to->l4 = from->l4;
 297         to->l5 = from->l5;
 298         to->l6 = from->l6;
 299         to->l7 = from->l7;
 300         to->i0 = from->i0;
 301         to->i1 = from->i1;
 302         to->i2 = from->i2;
 303         to->i3 = from->i3;
 304         to->i4 = from->i4;
 305         to->i5 = from->i5;
 306         to->i6 = from->i6;
 307         to->i7 = from->i7;
 308     }
 309     if (flags & CONTEXT_FLOATING_POINT)
 310     {
 311         /* FIXME */
 312     }
 313 }
 314
 315
 316 /***********************************************************************
 317  *           context_to_server
 318  *
 319  * Convert a register context to the server format.
 320  */
 321 NTSTATUS context_to_server( context_t *to, const CONTEXT *from )
 322 {
 323     DWORD flags = from->ContextFlags & ~CONTEXT_SPARC;  /* get rid of CPU id */
 324
 325     memset( to, 0, sizeof(*to) );
 326     to->cpu = CPU_SPARC;
 327
 328     if (flags & CONTEXT_CONTROL)
 329     {
 330         to->flags |= SERVER_CTX_CONTROL;
 331         to->ctl.sparc_regs.psr = from->psr;
 332         to->ctl.sparc_regs.pc  = from->pc;
 333         to->ctl.sparc_regs.npc = from->npc;
 334         to->ctl.sparc_regs.y   = from->y;
 335         to->ctl.sparc_regs.wim = from->wim;
 336         to->ctl.sparc_regs.tbr = from->tbr;
 337     }
 338     if (flags & CONTEXT_INTEGER)
 339     {
 340         to->flags |= SERVER_CTX_INTEGER;
 341         to->integer.sparc_regs.g[0] = from->g0;
 342         to->integer.sparc_regs.g[1] = from->g1;
 343         to->integer.sparc_regs.g[2] = from->g2;
 344         to->integer.sparc_regs.g[3] = from->g3;
 345         to->integer.sparc_regs.g[4] = from->g4;
 346         to->integer.sparc_regs.g[5] = from->g5;
 347         to->integer.sparc_regs.g[6] = from->g6;
 348         to->integer.sparc_regs.g[7] = from->g7;
 349         to->integer.sparc_regs.o[0] = from->o0;
 350         to->integer.sparc_regs.o[1] = from->o1;
 351         to->integer.sparc_regs.o[2] = from->o2;
 352         to->integer.sparc_regs.o[3] = from->o3;
 353         to->integer.sparc_regs.o[4] = from->o4;
 354         to->integer.sparc_regs.o[5] = from->o5;
 355         to->integer.sparc_regs.o[6] = from->o6;
 356         to->integer.sparc_regs.o[7] = from->o7;
 357         to->integer.sparc_regs.l[0] = from->l0;
 358         to->integer.sparc_regs.l[1] = from->l1;
 359         to->integer.sparc_regs.l[2] = from->l2;
 360         to->integer.sparc_regs.l[3] = from->l3;
 361         to->integer.sparc_regs.l[4] = from->l4;
 362         to->integer.sparc_regs.l[5] = from->l5;
 363         to->integer.sparc_regs.l[6] = from->l6;
 364         to->integer.sparc_regs.l[7] = from->l7;
 365         to->integer.sparc_regs.i[0] = from->i0;
 366         to->integer.sparc_regs.i[1] = from->i1;
 367         to->integer.sparc_regs.i[2] = from->i2;
 368         to->integer.sparc_regs.i[3] = from->i3;
 369         to->integer.sparc_regs.i[4] = from->i4;
 370         to->integer.sparc_regs.i[5] = from->i5;
 371         to->integer.sparc_regs.i[6] = from->i6;
 372         to->integer.sparc_regs.i[7] = from->i7;
 373     }
 374     if (flags & CONTEXT_FLOATING_POINT)
 375     {
 376         /* FIXME */
 377     }
 378     return STATUS_SUCCESS;
 379 }
 380
 381
 382 /***********************************************************************
 383  *           context_from_server
 384  *
 385  * Convert a register context from the server format.
 386  */
 387 NTSTATUS context_from_server( CONTEXT *to, const context_t *from )
 388 {
 389     if (from->cpu != CPU_SPARC) return STATUS_INVALID_PARAMETER;
 390
 391     to->ContextFlags = CONTEXT_SPARC;
 392     if (from->flags & SERVER_CTX_CONTROL)
 393     {
 394         to->ContextFlags |= CONTEXT_CONTROL;
 395         to->psr = from->ctl.sparc_regs.psr;
 396         to->pc  = from->ctl.sparc_regs.pc;
 397         to->npc = from->ctl.sparc_regs.npc;
 398         to->y   = from->ctl.sparc_regs.y;
 399         to->wim = from->ctl.sparc_regs.wim;
 400         to->tbr = from->ctl.sparc_regs.tbr;
 401     }
 402     if (from->flags & SERVER_CTX_INTEGER)
 403     {
 404         to->ContextFlags |= CONTEXT_INTEGER;
 405         to->g0 = from->integer.sparc_regs.g[0];
 406         to->g1 = from->integer.sparc_regs.g[1];
 407         to->g2 = from->integer.sparc_regs.g[2];
 408         to->g3 = from->integer.sparc_regs.g[3];
 409         to->g4 = from->integer.sparc_regs.g[4];
 410         to->g5 = from->integer.sparc_regs.g[5];
 411         to->g6 = from->integer.sparc_regs.g[6];
 412         to->g7 = from->integer.sparc_regs.g[7];
 413         to->o0 = from->integer.sparc_regs.o[0];
 414         to->o1 = from->integer.sparc_regs.o[1];
 415         to->o2 = from->integer.sparc_regs.o[2];
 416         to->o3 = from->integer.sparc_regs.o[3];
 417         to->o4 = from->integer.sparc_regs.o[4];
 418         to->o5 = from->integer.sparc_regs.o[5];
 419         to->o6 = from->integer.sparc_regs.o[6];
 420         to->o7 = from->integer.sparc_regs.o[7];
 421         to->l0 = from->integer.sparc_regs.l[0];
 422         to->l1 = from->integer.sparc_regs.l[1];
 423         to->l2 = from->integer.sparc_regs.l[2];
 424         to->l3 = from->integer.sparc_regs.l[3];
 425         to->l4 = from->integer.sparc_regs.l[4];
 426         to->l5 = from->integer.sparc_regs.l[5];
 427         to->l6 = from->integer.sparc_regs.l[6];
 428         to->l7 = from->integer.sparc_regs.l[7];
 429         to->i0 = from->integer.sparc_regs.i[0];
 430         to->i1 = from->integer.sparc_regs.i[1];
 431         to->i2 = from->integer.sparc_regs.i[2];
 432         to->i3 = from->integer.sparc_regs.i[3];
 433         to->i4 = from->integer.sparc_regs.i[4];
 434         to->i5 = from->integer.sparc_regs.i[5];
 435         to->i6 = from->integer.sparc_regs.i[6];
 436         to->i7 = from->integer.sparc_regs.i[7];
 437     }
 438     if (from->flags & SERVER_CTX_FLOATING_POINT)
 439     {
 440         /* FIXME */
 441     }
 442     return STATUS_SUCCESS;
 443 }
 444
 445
 446 /**********************************************************************
 447  *              segv_handler
 448  *
 449  * Handler for SIGSEGV.
 450  */
 451 static void segv_handler( int signal, siginfo_t *info, void *ucontext )
 452 {
 453     EXCEPTION_RECORD rec;
 454     CONTEXT context;
 455     NTSTATUS status;
 456
 457     rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
 458
 459     /* we want the page-fault case to be fast */
 460     if ( info->si_code == SEGV_ACCERR )
 461         if (!(rec.ExceptionCode = virtual_handle_fault( info->si_addr, 0 ))) return;
 462
 463     save_context( &context, ucontext );
 464     rec.ExceptionRecord  = NULL;
 465     rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
 466     rec.ExceptionAddress = (LPVOID)context.pc;
 467     rec.NumberParameters = 2;
 468     rec.ExceptionInformation[0] = 0;  /* FIXME: read/write access ? */
 469     rec.ExceptionInformation[1] = (ULONG_PTR)info->si_addr;
 470
 471     status = raise_exception( &rec, &context, TRUE );
 472     if (status) raise_status( status, &rec );
 473     restore_context( &context, ucontext );
 474 }
 475
 476 /**********************************************************************
 477  *              bus_handler
 478  *
 479  * Handler for SIGBUS.
 480  */
 481 static void bus_handler( int signal, siginfo_t *info, void *ucontext )
 482 {
 483     EXCEPTION_RECORD rec;
 484     CONTEXT context;
 485     NTSTATUS status;
 486
 487     save_context( &context, ucontext );
 488     rec.ExceptionRecord  = NULL;
 489     rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
 490     rec.ExceptionAddress = (LPVOID)context.pc;
 491     rec.NumberParameters = 0;
 492
 493     if ( info->si_code == BUS_ADRALN )
 494         rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
 495     else
 496         rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
 497
 498     status = raise_exception( &rec, &context, TRUE );
 499     if (status) raise_status( status, &rec );
 500     restore_context( &context, ucontext );
 501 }
 502
 503 /**********************************************************************
 504  *              ill_handler
 505  *
 506  * Handler for SIGILL.
 507  */
 508 static void ill_handler( int signal, siginfo_t *info, void *ucontext )
 509 {
 510     EXCEPTION_RECORD rec;
 511     CONTEXT context;
 512     NTSTATUS status;
 513
 514     switch ( info->si_code )
 515     {
 516     default:
 517     case ILL_ILLOPC:
 518     case ILL_ILLOPN:
 519     case ILL_ILLADR:
 520     case ILL_ILLTRP:
 521         rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
 522         break;
 523
 524     case ILL_PRVOPC:
 525     case ILL_PRVREG:
 526         rec.ExceptionCode = EXCEPTION_PRIV_INSTRUCTION;
 527         break;
 528
 529     case ILL_BADSTK:
 530         rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
 531         break;
 532     }
 533
 534     save_context( &context, ucontext );
 535     rec.ExceptionRecord  = NULL;
 536     rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
 537     rec.ExceptionAddress = (LPVOID)context.pc;
 538     rec.NumberParameters = 0;
 539     status = raise_exception( &rec, &context, TRUE );
 540     if (status) raise_status( status, &rec );
 541     restore_context( &context, ucontext );
 542 }
 543
 544
 545 /**********************************************************************
 546  *              trap_handler
 547  *
 548  * Handler for SIGTRAP.
 549  */
 550 static void trap_handler( int signal, siginfo_t *info, void *ucontext )
 551 {
 552     EXCEPTION_RECORD rec;
 553     CONTEXT context;
 554     NTSTATUS status;
 555
 556     switch ( info->si_code )
 557     {
 558     case TRAP_TRACE:
 559         rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
 560         break;
 561     case TRAP_BRKPT:
 562     default:
 563         rec.ExceptionCode = EXCEPTION_BREAKPOINT;
 564         break;
 565     }
 566
 567     save_context( &context, ucontext );
 568     rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
 569     rec.ExceptionRecord  = NULL;
 570     rec.ExceptionAddress = (LPVOID)context.pc;
 571     rec.NumberParameters = 0;
 572     status = raise_exception( &rec, &context, TRUE );
 573     if (status) raise_status( status, &rec );
 574     restore_context( &context, ucontext );
 575 }
 576
 577
 578 /**********************************************************************
 579  *              fpe_handler
 580  *
 581  * Handler for SIGFPE.
 582  */
 583 static void fpe_handler( int signal, siginfo_t *info, void *ucontext )
 584 {
 585     EXCEPTION_RECORD rec;
 586     CONTEXT context;
 587     NTSTATUS status;
 588
 589     switch ( info->si_code )
 590     {
 591     case FPE_FLTSUB:
 592         rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
 593         break;
 594     case FPE_INTDIV:
 595         rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
 596         break;
 597     case FPE_INTOVF:
 598         rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
 599         break;
 600     case FPE_FLTDIV:
 601         rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
 602         break;
 603     case FPE_FLTOVF:
 604         rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
 605         break;
 606     case FPE_FLTUND:
 607         rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
 608         break;
 609     case FPE_FLTRES:
 610         rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
 611         break;
 612     case FPE_FLTINV:
 613     default:
 614         rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
 615         break;
 616     }
 617
 618     save_context( &context, ucontext );
 619     save_fpu( &context, ucontext );
 620     rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
 621     rec.ExceptionRecord  = NULL;
 622     rec.ExceptionAddress = (LPVOID)context.pc;
 623     rec.NumberParameters = 0;
 624     status = raise_exception( &rec, &context, TRUE );
 625     if (status) raise_status( status, &rec );
 626     restore_context( &context, ucontext );
 627     restore_fpu( &context, ucontext );
 628 }
 629
 630
 631 /**********************************************************************
 632  *              int_handler
 633  *
 634  * Handler for SIGINT.
 635  */
 636 static void int_handler( int signal, siginfo_t *info, void *ucontext )
 637 {
 638     if (!dispatch_signal(SIGINT))
 639     {
 640         EXCEPTION_RECORD rec;
 641         CONTEXT context;
 642         NTSTATUS status;
 643
 644         save_context( &context, ucontext );
 645         rec.ExceptionCode    = CONTROL_C_EXIT;
 646         rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
 647         rec.ExceptionRecord  = NULL;
 648         rec.ExceptionAddress = (LPVOID)context.pc;
 649         rec.NumberParameters = 0;
 650         status = raise_exception( &rec, &context, TRUE );
 651         if (status) raise_status( status, &rec );
 652         restore_context( &context, ucontext );
 653     }
 654 }
 655
 656 /**********************************************************************
 657  *              abrt_handler
 658  *
 659  * Handler for SIGABRT.
 660  */
 661 static void abrt_handler( int signal, struct siginfo *info, void *ucontext )
 662 {
 663     EXCEPTION_RECORD rec;
 664     CONTEXT context;
 665     NTSTATUS status;
 666
 667     save_context( &context, ucontext );
 668     rec.ExceptionCode    = EXCEPTION_WINE_ASSERTION;
 669     rec.ExceptionFlags   = EH_NONCONTINUABLE;
 670     rec.ExceptionRecord  = NULL;
 671     rec.ExceptionAddress = (LPVOID)context.pc;
 672     rec.NumberParameters = 0;
 673     status = raise_exception( &rec, &context, TRUE );
 674     if (status) raise_status( status, &rec );
 675     restore_context( &context, ucontext );
 676 }
 677
 678
 679 /**********************************************************************
 680  *              quit_handler
 681  *
 682  * Handler for SIGQUIT.
 683  */
 684 static void quit_handler( int signal, struct siginfo *info, void *ucontext )
 685 {
 686     abort_thread(0);
 687 }
 688
 689
 690 /**********************************************************************
 691  *              usr1_handler
 692  *
 693  * Handler for SIGUSR1, used to signal a thread that it got suspended.
 694  */
 695 static void usr1_handler( int signal, struct siginfo *info, void *ucontext )
 696 {
 697     CONTEXT context;
 698
 699     save_context( &context, ucontext );
 700     wait_suspend( &context );
 701     restore_context( &context, ucontext );
 702 }
 703
 704
 705 /***********************************************************************
 706  *           __wine_set_signal_handler   (NTDLL.@)
 707  */
 708 int CDECL __wine_set_signal_handler(unsigned int sig, wine_signal_handler wsh)
 709 {
 710     if (sig > sizeof(handlers) / sizeof(handlers[0])) return -1;
 711     if (handlers[sig] != NULL) return -2;
 712     handlers[sig] = wsh;
 713     return 0;
 714 }
 715
 716
 717 /**********************************************************************
 718  *              signal_alloc_thread
 719  */
 720 NTSTATUS signal_alloc_thread( TEB **teb )
 721 {
 722     static size_t sigstack_zero_bits;
 723     SIZE_T size;
 724     NTSTATUS status;
 725
 726     if (!sigstack_zero_bits)
 727     {
 728         size_t min_size = getpagesize();  /* this is just for the TEB, we don't use a signal stack yet */
 729         /* find the first power of two not smaller than min_size */
 730         while ((1u << sigstack_zero_bits) < min_size) sigstack_zero_bits++;
 731         assert( sizeof(TEB) <= min_size );
 732     }
 733
 734     size = 1 << sigstack_zero_bits;
 735     *teb = NULL;
 736     if (!(status = NtAllocateVirtualMemory( NtCurrentProcess(), (void **)teb, sigstack_zero_bits,
 737                                             &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE )))
 738     {
 739         (*teb)->Tib.Self = &(*teb)->Tib;
 740         (*teb)->Tib.ExceptionList = (void *)~0UL;
 741     }
 742     return status;
 743 }
 744
 745
 746 /**********************************************************************
 747  *              signal_free_thread
 748  */
 749 void signal_free_thread( TEB *teb )
 750 {
 751     SIZE_T size;
 752
 753     if (teb->DeallocationStack)
 754     {
 755         size = 0;
 756         NtFreeVirtualMemory( GetCurrentProcess(), &teb->DeallocationStack, &size, MEM_RELEASE );
 757     }
 758     size = 0;
 759     NtFreeVirtualMemory( NtCurrentProcess(), (void **)&teb, &size, MEM_RELEASE );
 760 }
 761
 762
 763 /**********************************************************************
 764  *              signal_init_thread
 765  */
 766 void signal_init_thread( TEB *teb )
 767 {
 768     static int init_done;
 769
 770     if (!init_done)
 771     {
 772         pthread_key_create( &teb_key, NULL );
 773         init_done = 1;
 774     }
 775     pthread_setspecific( teb_key, teb );
 776 }
 777
 778
 779 /**********************************************************************
 780  *              signal_init_process
 781  */
 782 void signal_init_process(void)
 783 {
 784     struct sigaction sig_act;
 785
 786     sig_act.sa_mask = server_block_set;
 787     sig_act.sa_flags = SA_RESTART | SA_SIGINFO;
 788
 789     sig_act.sa_sigaction = int_handler;
 790     if (sigaction( SIGINT, &sig_act, NULL ) == -1) goto error;
 791     sig_act.sa_sigaction = fpe_handler;
 792     if (sigaction( SIGFPE, &sig_act, NULL ) == -1) goto error;
 793     sig_act.sa_sigaction = abrt_handler;
 794     if (sigaction( SIGABRT, &sig_act, NULL ) == -1) goto error;
 795     sig_act.sa_sigaction = quit_handler;
 796     if (sigaction( SIGQUIT, &sig_act, NULL ) == -1) goto error;
 797     sig_act.sa_sigaction = usr1_handler;
 798     if (sigaction( SIGUSR1, &sig_act, NULL ) == -1) goto error;
 799
 800     sig_act.sa_sigaction = segv_handler;
 801     if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;
 802     sig_act.sa_sigaction = ill_handler;
 803     if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
 804 #ifdef SIGBUS
 805     sig_act.sa_sigaction = bus_handler;
 806     if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
 807 #endif
 808
 809 #ifdef SIGTRAP
 810     sig_act.sa_sigaction = trap_handler;
 811     if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error;
 812 #endif
 813
 814 #ifdef __sun__
 815     /* 'ta 6' tells the kernel to synthesize any unaligned accesses this
 816        process makes, instead of just signalling an error and terminating
 817        the process.  wine-devel did not reach a conclusion on whether
 818        this is correct, because that is what x86 does, or it is harmful
 819        because it could obscure problems in user code */
 820     __asm__("ta 6"); /* 6 == ST_FIX_ALIGN defined in sys/trap.h */
 821 #endif
 822
 823     return;
 824  error:
 825     perror("sigaction");
 826     exit(1);
 827 }
 828
 829
 830 /**********************************************************************
 831  *              __wine_enter_vm86
 832  */
 833 void __wine_enter_vm86( CONTEXT *context )
 834 {
 835     MESSAGE("vm86 mode not supported on this platform\n");
 836 }
 837
 838 /***********************************************************************
 839  *            RtlUnwind  (NTDLL.@)
 840  */
 841 void WINAPI RtlUnwind( PVOID pEndFrame, PVOID targetIp, PEXCEPTION_RECORD pRecord, PVOID retval )
 842 {
 843     FIXME( "Not implemented on Sparc\n" );
 844 }
 845
 846 /*******************************************************************
 847  *              NtRaiseException (NTDLL.@)
 848  */
 849 NTSTATUS WINAPI NtRaiseException( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
 850 {
 851     NTSTATUS status = raise_exception( rec, context, first_chance );
 852     if (status == STATUS_SUCCESS) NtSetContextThread( GetCurrentThread(), context );
 853     return status;
 854 }
 855
 856 /***********************************************************************
 857  *              RtlRaiseException (NTDLL.@)
 858  */
 859 void WINAPI RtlRaiseException( EXCEPTION_RECORD *rec )
 860 {
 861     CONTEXT context;
 862     NTSTATUS status;
 863
 864     RtlCaptureContext( &context );
 865     rec->ExceptionAddress = (void *)context.pc;
 866     status = raise_exception( rec, &context, TRUE );
 867     if (status) raise_status( status, rec );
 868 }
 869
 870 /*************************************************************************
 871  *              RtlCaptureStackBackTrace (NTDLL.@)
 872  */
 873 USHORT WINAPI RtlCaptureStackBackTrace( ULONG skip, ULONG count, PVOID *buffer, ULONG *hash )
 874 {
 875     FIXME( "(%d, %d, %p, %p) stub!\n", skip, count, buffer, hash );
 876     return 0;
 877 }
 878
 879 /***********************************************************************
 880  *           call_thread_entry_point
 881  */
 882 void call_thread_entry_point( LPTHREAD_START_ROUTINE entry, void *arg )
 883 {
 884     __TRY
 885     {
 886         exit_thread( entry( arg ));
 887     }
 888     __EXCEPT(unhandled_exception_filter)
 889     {
 890         NtTerminateThread( GetCurrentThread(), GetExceptionCode() );
 891     }
 892     __ENDTRY
 893     abort();  /* should not be reached */
 894 }
 895
 896 /***********************************************************************
 897  *           RtlExitUserThread  (NTDLL.@)
 898  */
 899 void WINAPI RtlExitUserThread( ULONG status )
 900 {
 901     exit_thread( status );
 902 }
 903
 904 /***********************************************************************
 905  *           abort_thread
 906  */
 907 void abort_thread( int status )
 908 {
 909     terminate_thread( status );
 910 }
 911
 912 /**********************************************************************
 913  *              DbgBreakPoint   (NTDLL.@)
 914  */
 915 void WINAPI DbgBreakPoint(void)
 916 {
 917      kill(getpid(), SIGTRAP);
 918 }
 919
 920 /**********************************************************************
 921  *              DbgUserBreakPoint   (NTDLL.@)
 922  */
 923 void WINAPI DbgUserBreakPoint(void)
 924 {
 925      kill(getpid(), SIGTRAP);
 926 }
 927
 928 /**********************************************************************
 929  *           NtCurrentTeb   (NTDLL.@)
 930  */
 931 TEB * WINAPI NtCurrentTeb(void)
 932 {
 933     return pthread_getspecific( teb_key );
 934 }
 935
 936 #endif  /* __sparc__ */