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