dlls/ntdll/signal_arm.c

   1 /*
   2  * ARM signal handling routines
   3  *
   4  * Copyright 2002 Marcus Meissner, SuSE Linux AG
   5  * Copyright 2010 André Hentschel
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #ifdef __arm__
  23
  24 #include "config.h"
  25 #include "wine/port.h"
  26
  27 #include <assert.h>
  28 #include <signal.h>
  29 #include <stdlib.h>
  30 #include <stdarg.h>
  31 #include <stdio.h>
  32 #ifdef HAVE_UNISTD_H
  33 # include <unistd.h>
  34 #endif
  35
  36 #ifdef HAVE_SYS_PARAM_H
  37 # include <sys/param.h>
  38 #endif
  39 #ifdef HAVE_SYSCALL_H
  40 # include <syscall.h>
  41 #else
  42 # ifdef HAVE_SYS_SYSCALL_H
  43 #  include <sys/syscall.h>
  44 # endif
  45 #endif
  46 #ifdef HAVE_SYS_SIGNAL_H
  47 # include <sys/signal.h>
  48 #endif
  49
  50 #include "ntstatus.h"
  51 #define WIN32_NO_STATUS
  52 #include "windef.h"
  53 #include "winternl.h"
  54 #include "wine/library.h"
  55 #include "wine/exception.h"
  56 #include "ntdll_misc.h"
  57 #include "wine/debug.h"
  58 #include "winnt.h"
  59
  60 WINE_DEFAULT_DEBUG_CHANNEL(seh);
  61
  62 static pthread_key_t teb_key;
  63
  64 /***********************************************************************
  65  * signal context platform-specific definitions
  66  */
  67 #ifdef linux
  68
  69 /* All Registers access - only for local access */
  70 # define REG_sig(reg_name, context) ((context)->uc_mcontext.reg_name)
  71 # define REGn_sig(reg_num, context) ((context)->uc_mcontext.arm_r##reg_num)
  72
  73 /* Special Registers access  */
  74 # define SP_sig(context)            REG_sig(arm_sp, context)    /* Stack pointer */
  75 # define LR_sig(context)            REG_sig(arm_lr, context)    /* Link register */
  76 # define PC_sig(context)            REG_sig(arm_pc, context)    /* Program counter */
  77 # define CPSR_sig(context)          REG_sig(arm_cpsr, context)  /* Current State Register */
  78 # define IP_sig(context)            REG_sig(arm_ip, context)    /* Program counter (2?) */
  79 # define FP_sig(context)            REG_sig(arm_fp, context)    /* Frame pointer */
  80
  81 #endif /* linux */
  82
  83 typedef int (*wine_signal_handler)(unsigned int sig);
  84
  85 static wine_signal_handler handlers[256];
  86
  87 /***********************************************************************
  88  *           dispatch_signal
  89  */
  90 static inline int dispatch_signal(unsigned int sig)
  91 {
  92     if (handlers[sig] == NULL) return 0;
  93     return handlers[sig](sig);
  94 }
  95
  96 /***********************************************************************
  97  *           save_context
  98  *
  99  * Set the register values from a sigcontext.
 100  */
 101 static void save_context( CONTEXT *context, const ucontext_t *sigcontext )
 102 {
 103 #define C(x) context->R##x = REGn_sig(x,sigcontext)
 104     /* Save normal registers */
 105     C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
 106 #undef C
 107
 108     context->Sp   = SP_sig(sigcontext);   /* Stack pointer */
 109     context->Lr   = LR_sig(sigcontext);   /* Link register */
 110     context->Pc   = PC_sig(sigcontext);   /* Program Counter */
 111     context->Cpsr = CPSR_sig(sigcontext); /* Current State Register */
 112     context->Ip   = IP_sig(sigcontext);   /* Intra-Procedure-call scratch register */
 113     context->Fp   = FP_sig(sigcontext);   /* Frame pointer */
 114 }
 115
 116
 117 /***********************************************************************
 118  *           restore_context
 119  *
 120  * Build a sigcontext from the register values.
 121  */
 122 static void restore_context( const CONTEXT *context, ucontext_t *sigcontext )
 123 {
 124 #define C(x)  REGn_sig(x,sigcontext) = context->R##x
 125     /* Restore normal registers */
 126     C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
 127 #undef C
 128
 129     SP_sig(sigcontext)   = context->Sp;   /* Stack pointer */
 130     LR_sig(sigcontext)   = context->Lr ;  /* Link register */
 131     PC_sig(sigcontext)   = context->Pc;   /* Program Counter */
 132     CPSR_sig(sigcontext) = context->Cpsr; /* Current State Register */
 133     IP_sig(sigcontext)   = context->Ip;   /* Intra-Procedure-call scratch register */
 134     FP_sig(sigcontext)   = context->Fp;   /* Frame pointer */
 135 }
 136
 137
 138 /***********************************************************************
 139  *           save_fpu
 140  *
 141  * Set the FPU context from a sigcontext.
 142  */
 143 static inline void save_fpu( CONTEXT *context, const ucontext_t *sigcontext )
 144 {
 145     FIXME("not implemented\n");
 146 }
 147
 148
 149 /***********************************************************************
 150  *           restore_fpu
 151  *
 152  * Restore the FPU context to a sigcontext.
 153  */
 154 static inline void restore_fpu( CONTEXT *context, const ucontext_t *sigcontext )
 155 {
 156     FIXME("not implemented\n");
 157 }
 158
 159
 160 /***********************************************************************
 161  *              RtlCaptureContext (NTDLL.@)
 162  */
 163 void WINAPI RtlCaptureContext( CONTEXT *context )
 164 {
 165     FIXME("not implemented\n");
 166     memset( context, 0, sizeof(*context) );
 167 }
 168
 169
 170 /***********************************************************************
 171  *           set_cpu_context
 172  *
 173  * Set the new CPU context.
 174  */
 175 void set_cpu_context( const CONTEXT *context )
 176 {
 177     FIXME("not implemented\n");
 178     return;
 179 }
 180
 181
 182 /***********************************************************************
 183  *           copy_context
 184  *
 185  * Copy a register context according to the flags.
 186  */
 187 void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
 188 {
 189     if (flags & CONTEXT_CONTROL)
 190     {
 191         to->Sp      = from->Sp;
 192         to->Lr      = from->Lr;
 193         to->Pc      = from->Pc;
 194         to->Cpsr    = from->Cpsr;
 195     }
 196     if (flags & CONTEXT_INTEGER)
 197     {
 198         to->R0  = from->R0;
 199         to->R1  = from->R1;
 200         to->R2  = from->R2;
 201         to->R3  = from->R3;
 202         to->R4  = from->R4;
 203         to->R5  = from->R5;
 204         to->R6  = from->R6;
 205         to->R7  = from->R7;
 206         to->R8  = from->R8;
 207         to->R9  = from->R9;
 208         to->R10 = from->R10;
 209         to->Ip  = from->Ip;
 210         to->Fp  = from->Fp;
 211     }
 212 }
 213
 214
 215 /***********************************************************************
 216  *           context_to_server
 217  *
 218  * Convert a register context to the server format.
 219  */
 220 NTSTATUS context_to_server( context_t *to, const CONTEXT *from )
 221 {
 222     DWORD flags = from->ContextFlags;  /* no CPU id? */
 223
 224     memset( to, 0, sizeof(*to) );
 225     to->cpu = CPU_ARM;
 226
 227     if (flags & CONTEXT_CONTROL)
 228     {
 229         to->flags |= SERVER_CTX_CONTROL;
 230         to->ctl.arm_regs.sp   = from->Sp;
 231         to->ctl.arm_regs.lr   = from->Lr;
 232         to->ctl.arm_regs.pc   = from->Pc;
 233         to->ctl.arm_regs.cpsr = from->Cpsr;
 234     }
 235     if (flags & CONTEXT_INTEGER)
 236     {
 237         to->flags |= SERVER_CTX_INTEGER;
 238         to->integer.arm_regs.r[0]  = from->R0;
 239         to->integer.arm_regs.r[1]  = from->R1;
 240         to->integer.arm_regs.r[2]  = from->R2;
 241         to->integer.arm_regs.r[3]  = from->R3;
 242         to->integer.arm_regs.r[4]  = from->R4;
 243         to->integer.arm_regs.r[5]  = from->R5;
 244         to->integer.arm_regs.r[6]  = from->R6;
 245         to->integer.arm_regs.r[7]  = from->R7;
 246         to->integer.arm_regs.r[8]  = from->R8;
 247         to->integer.arm_regs.r[9]  = from->R9;
 248         to->integer.arm_regs.r[10] = from->R10;
 249         to->integer.arm_regs.r[11] = from->Fp;
 250         to->integer.arm_regs.r[12] = from->Ip;
 251     }
 252     return STATUS_SUCCESS;
 253 }
 254
 255
 256 /***********************************************************************
 257  *           context_from_server
 258  *
 259  * Convert a register context from the server format.
 260  */
 261 NTSTATUS context_from_server( CONTEXT *to, const context_t *from )
 262 {
 263     if (from->cpu != CPU_ARM) return STATUS_INVALID_PARAMETER;
 264
 265     to->ContextFlags = 0;  /* no CPU id? */
 266     if (from->flags & SERVER_CTX_CONTROL)
 267     {
 268         to->ContextFlags |= CONTEXT_CONTROL;
 269         to->Sp   = from->ctl.arm_regs.sp;
 270         to->Lr   = from->ctl.arm_regs.lr;
 271         to->Pc   = from->ctl.arm_regs.pc;
 272         to->Cpsr = from->ctl.arm_regs.cpsr;
 273     }
 274     if (from->flags & SERVER_CTX_INTEGER)
 275     {
 276         to->ContextFlags |= CONTEXT_INTEGER;
 277         to->R0  = from->integer.arm_regs.r[0];
 278         to->R1  = from->integer.arm_regs.r[1];
 279         to->R2  = from->integer.arm_regs.r[2];
 280         to->R3  = from->integer.arm_regs.r[3];
 281         to->R4  = from->integer.arm_regs.r[4];
 282         to->R5  = from->integer.arm_regs.r[5];
 283         to->R6  = from->integer.arm_regs.r[6];
 284         to->R7  = from->integer.arm_regs.r[7];
 285         to->R8  = from->integer.arm_regs.r[8];
 286         to->R9  = from->integer.arm_regs.r[9];
 287         to->R10 = from->integer.arm_regs.r[10];
 288         to->Fp  = from->integer.arm_regs.r[11];
 289         to->Ip  = from->integer.arm_regs.r[12];
 290      }
 291     return STATUS_SUCCESS;
 292 }
 293
 294
 295 /**********************************************************************
 296  *           call_stack_handlers
 297  *
 298  * Call the stack handlers chain.
 299  */
 300 static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *context )
 301 {
 302     EXCEPTION_POINTERS ptrs;
 303
 304     FIXME( "not implemented on ARM, exceptioncode: %x\n", rec->ExceptionCode );
 305
 306     /* hack: call unhandled exception filter directly */
 307     ptrs.ExceptionRecord = rec;
 308     ptrs.ContextRecord = context;
 309     unhandled_exception_filter( &ptrs );
 310     return STATUS_UNHANDLED_EXCEPTION;
 311 }
 312
 313
 314 /*******************************************************************
 315  *              raise_exception
 316  *
 317  * Implementation of NtRaiseException.
 318  */
 319 static NTSTATUS raise_exception( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
 320 {
 321     NTSTATUS status;
 322
 323     if (first_chance)
 324     {
 325         DWORD c;
 326
 327         for (c = 0; c < rec->NumberParameters; c++)
 328             TRACE( " info[%d]=%08lx\n", c, rec->ExceptionInformation[c] );
 329         if (rec->ExceptionCode == EXCEPTION_WINE_STUB)
 330         {
 331             if (rec->ExceptionInformation[1] >> 16)
 332                 MESSAGE( "wine: Call from %p to unimplemented function %s.%s, aborting\n",
 333                          rec->ExceptionAddress,
 334                          (char*)rec->ExceptionInformation[0], (char*)rec->ExceptionInformation[1] );
 335             else
 336                 MESSAGE( "wine: Call from %p to unimplemented function %s.%ld, aborting\n",
 337                          rec->ExceptionAddress,
 338                          (char*)rec->ExceptionInformation[0], rec->ExceptionInformation[1] );
 339         }
 340         else
 341         {
 342             /* FIXME: dump context */
 343         }
 344
 345         status = send_debug_event( rec, TRUE, context );
 346         if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
 347             return STATUS_SUCCESS;
 348
 349         if (call_vectored_handlers( rec, context ) == EXCEPTION_CONTINUE_EXECUTION)
 350             return STATUS_SUCCESS;
 351
 352         if ((status = call_stack_handlers( rec, context )) != STATUS_UNHANDLED_EXCEPTION)
 353             return status;
 354     }
 355
 356     /* last chance exception */
 357
 358     status = send_debug_event( rec, FALSE, context );
 359     if (status != DBG_CONTINUE)
 360     {
 361         if (rec->ExceptionFlags & EH_STACK_INVALID)
 362             ERR("Exception frame is not in stack limits => unable to dispatch exception.\n");
 363         else if (rec->ExceptionCode == STATUS_NONCONTINUABLE_EXCEPTION)
 364             ERR("Process attempted to continue execution after noncontinuable exception.\n");
 365         else
 366             ERR("Unhandled exception code %x flags %x addr %p\n",
 367                 rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress );
 368         NtTerminateProcess( NtCurrentProcess(), rec->ExceptionCode );
 369     }
 370     return STATUS_SUCCESS;
 371 }
 372
 373
 374 /**********************************************************************
 375  *              segv_handler
 376  *
 377  * Handler for SIGSEGV and related errors.
 378  */
 379 static void segv_handler( int signal, siginfo_t *info, void *ucontext )
 380 {
 381     EXCEPTION_RECORD rec;
 382     CONTEXT context;
 383     NTSTATUS status;
 384
 385     rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
 386
 387     /* we want the page-fault case to be fast */
 388     if ( info->si_code == SEGV_ACCERR )
 389         if (!(rec.ExceptionCode = virtual_handle_fault( info->si_addr, 0 ))) return;
 390
 391     save_context( &context, ucontext );
 392     rec.ExceptionRecord  = NULL;
 393     rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
 394     rec.ExceptionAddress = (LPVOID)context.Pc;
 395     rec.NumberParameters = 2;
 396     rec.ExceptionInformation[0] = 0;  /* FIXME: read/write access ? */
 397     rec.ExceptionInformation[1] = (ULONG_PTR)info->si_addr;
 398
 399     status = raise_exception( &rec, &context, TRUE );
 400     if (status) raise_status( status, &rec );
 401     restore_context( &context, ucontext );
 402 }
 403
 404 /**********************************************************************
 405  *              trap_handler
 406  *
 407  * Handler for SIGTRAP.
 408  */
 409 static void trap_handler( int signal, siginfo_t *info, void *ucontext )
 410 {
 411     EXCEPTION_RECORD rec;
 412     CONTEXT context;
 413     NTSTATUS status;
 414
 415     switch ( info->si_code )
 416     {
 417     case TRAP_TRACE:
 418         rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
 419         break;
 420     case TRAP_BRKPT:
 421     default:
 422         rec.ExceptionCode = EXCEPTION_BREAKPOINT;
 423         break;
 424     }
 425
 426     save_context( &context, ucontext );
 427     rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
 428     rec.ExceptionRecord  = NULL;
 429     rec.ExceptionAddress = (LPVOID)context.Pc;
 430     rec.NumberParameters = 0;
 431     status = raise_exception( &rec, &context, TRUE );
 432     if (status) raise_status( status, &rec );
 433     restore_context( &context, ucontext );
 434 }
 435
 436 /**********************************************************************
 437  *              fpe_handler
 438  *
 439  * Handler for SIGFPE.
 440  */
 441 static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
 442 {
 443     EXCEPTION_RECORD rec;
 444     CONTEXT context;
 445     NTSTATUS status;
 446
 447     save_fpu( &context, sigcontext );
 448     save_context( &context, sigcontext );
 449
 450     switch (siginfo->si_code & 0xffff )
 451     {
 452 #ifdef FPE_FLTSUB
 453     case FPE_FLTSUB:
 454         rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
 455         break;
 456 #endif
 457 #ifdef FPE_INTDIV
 458     case FPE_INTDIV:
 459         rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
 460         break;
 461 #endif
 462 #ifdef FPE_INTOVF
 463     case FPE_INTOVF:
 464         rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
 465         break;
 466 #endif
 467 #ifdef FPE_FLTDIV
 468     case FPE_FLTDIV:
 469         rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
 470         break;
 471 #endif
 472 #ifdef FPE_FLTOVF
 473     case FPE_FLTOVF:
 474         rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
 475         break;
 476 #endif
 477 #ifdef FPE_FLTUND
 478     case FPE_FLTUND:
 479         rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
 480         break;
 481 #endif
 482 #ifdef FPE_FLTRES
 483     case FPE_FLTRES:
 484         rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
 485         break;
 486 #endif
 487 #ifdef FPE_FLTINV
 488     case FPE_FLTINV:
 489 #endif
 490     default:
 491         rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
 492         break;
 493     }
 494     rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
 495     rec.ExceptionRecord  = NULL;
 496     /*rec.ExceptionAddress = (LPVOID)context.Iar;*/
 497     rec.NumberParameters = 0;
 498     status = raise_exception( &rec, &context, TRUE );
 499     if (status) raise_status( status, &rec );
 500
 501     restore_context( &context, sigcontext );
 502     restore_fpu( &context, sigcontext );
 503 }
 504
 505 /**********************************************************************
 506  *              int_handler
 507  *
 508  * Handler for SIGINT.
 509  */
 510 static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
 511 {
 512     if (!dispatch_signal(SIGINT))
 513     {
 514         EXCEPTION_RECORD rec;
 515         CONTEXT context;
 516         NTSTATUS status;
 517
 518         save_context( &context, sigcontext );
 519         rec.ExceptionCode    = CONTROL_C_EXIT;
 520         rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
 521         rec.ExceptionRecord  = NULL;
 522         /*rec.ExceptionAddress = (LPVOID)context.Iar;*/
 523         rec.NumberParameters = 0;
 524         status = raise_exception( &rec, &context, TRUE );
 525         if (status) raise_status( status, &rec );
 526         restore_context( &context, sigcontext );
 527     }
 528 }
 529
 530
 531 /**********************************************************************
 532  *              abrt_handler
 533  *
 534  * Handler for SIGABRT.
 535  */
 536 static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext )
 537 {
 538     EXCEPTION_RECORD rec;
 539     CONTEXT context;
 540     NTSTATUS status;
 541
 542     save_context( &context, sigcontext );
 543     rec.ExceptionCode    = EXCEPTION_WINE_ASSERTION;
 544     rec.ExceptionFlags   = EH_NONCONTINUABLE;
 545     rec.ExceptionRecord  = NULL;
 546     /*rec.ExceptionAddress = (LPVOID)context.Iar;*/
 547     rec.NumberParameters = 0;
 548     status = raise_exception( &rec, &context, TRUE );
 549     if (status) raise_status( status, &rec );
 550     restore_context( &context, sigcontext );
 551 }
 552
 553
 554 /**********************************************************************
 555  *              quit_handler
 556  *
 557  * Handler for SIGQUIT.
 558  */
 559 static void quit_handler( int signal, siginfo_t *siginfo, void *sigcontext )
 560 {
 561     abort_thread(0);
 562 }
 563
 564
 565 /**********************************************************************
 566  *              usr1_handler
 567  *
 568  * Handler for SIGUSR1, used to signal a thread that it got suspended.
 569  */
 570 static void usr1_handler( int signal, siginfo_t *siginfo, void *sigcontext )
 571 {
 572     CONTEXT context;
 573
 574     save_context( &context, sigcontext );
 575     wait_suspend( &context );
 576     restore_context( &context, sigcontext );
 577 }
 578
 579
 580 /***********************************************************************
 581  *           __wine_set_signal_handler   (NTDLL.@)
 582  */
 583 int CDECL __wine_set_signal_handler(unsigned int sig, wine_signal_handler wsh)
 584 {
 585     if (sig > sizeof(handlers) / sizeof(handlers[0])) return -1;
 586     if (handlers[sig] != NULL) return -2;
 587     handlers[sig] = wsh;
 588     return 0;
 589 }
 590
 591
 592 /**********************************************************************
 593  *             signal_alloc_thread
 594  */
 595 NTSTATUS signal_alloc_thread( TEB **teb )
 596 {
 597     static size_t sigstack_zero_bits;
 598     SIZE_T size;
 599     NTSTATUS status;
 600
 601     if (!sigstack_zero_bits)
 602     {
 603         size_t min_size = getpagesize();  /* this is just for the TEB, we don't use a signal stack yet */
 604         /* find the first power of two not smaller than min_size */
 605         while ((1u << sigstack_zero_bits) < min_size) sigstack_zero_bits++;
 606         assert( sizeof(TEB) <= min_size );
 607     }
 608
 609     size = 1 << sigstack_zero_bits;
 610     *teb = NULL;
 611     if (!(status = NtAllocateVirtualMemory( NtCurrentProcess(), (void **)teb, sigstack_zero_bits,
 612                                             &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE )))
 613     {
 614         (*teb)->Tib.Self = &(*teb)->Tib;
 615         (*teb)->Tib.ExceptionList = (void *)~0UL;
 616     }
 617     return status;
 618 }
 619
 620
 621 /**********************************************************************
 622  *             signal_free_thread
 623  */
 624 void signal_free_thread( TEB *teb )
 625 {
 626     SIZE_T size;
 627
 628     if (teb->DeallocationStack)
 629     {
 630         size = 0;
 631         NtFreeVirtualMemory( GetCurrentProcess(), &teb->DeallocationStack, &size, MEM_RELEASE );
 632     }
 633     size = 0;
 634     NtFreeVirtualMemory( NtCurrentProcess(), (void **)&teb, &size, MEM_RELEASE );
 635 }
 636
 637
 638 /**********************************************************************
 639  *              signal_init_thread
 640  */
 641 void signal_init_thread( TEB *teb )
 642 {
 643     static int init_done;
 644
 645     if (!init_done)
 646     {
 647         pthread_key_create( &teb_key, NULL );
 648         init_done = 1;
 649     }
 650     pthread_setspecific( teb_key, teb );
 651 }
 652
 653
 654 /**********************************************************************
 655  *              signal_init_process
 656  */
 657 void signal_init_process(void)
 658 {
 659     struct sigaction sig_act;
 660
 661     sig_act.sa_mask = server_block_set;
 662     sig_act.sa_flags = SA_RESTART | SA_SIGINFO;
 663
 664     sig_act.sa_sigaction = int_handler;
 665     if (sigaction( SIGINT, &sig_act, NULL ) == -1) goto error;
 666     sig_act.sa_sigaction = fpe_handler;
 667     if (sigaction( SIGFPE, &sig_act, NULL ) == -1) goto error;
 668     sig_act.sa_sigaction = abrt_handler;
 669     if (sigaction( SIGABRT, &sig_act, NULL ) == -1) goto error;
 670     sig_act.sa_sigaction = quit_handler;
 671     if (sigaction( SIGQUIT, &sig_act, NULL ) == -1) goto error;
 672     sig_act.sa_sigaction = usr1_handler;
 673     if (sigaction( SIGUSR1, &sig_act, NULL ) == -1) goto error;
 674
 675     sig_act.sa_sigaction = segv_handler;
 676     if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;
 677     if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
 678 #ifdef SIGBUS
 679     if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
 680 #endif
 681
 682 #ifdef SIGTRAP
 683     sig_act.sa_sigaction = trap_handler;
 684     if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error;
 685 #endif
 686     return;
 687
 688  error:
 689     perror("sigaction");
 690     exit(1);
 691 }
 692
 693
 694 /**********************************************************************
 695  *              __wine_enter_vm86   (NTDLL.@)
 696  */
 697 void __wine_enter_vm86( CONTEXT *context )
 698 {
 699     MESSAGE("vm86 mode not supported on this platform\n");
 700 }
 701
 702 /***********************************************************************
 703  *            RtlUnwind  (NTDLL.@)
 704  */
 705 void WINAPI RtlUnwind( PVOID pEndFrame, PVOID targetIp, PEXCEPTION_RECORD pRecord, PVOID retval )
 706 {
 707     FIXME( "Not implemented on ARM\n" );
 708 }
 709
 710 /*******************************************************************
 711  *              NtRaiseException (NTDLL.@)
 712  */
 713 NTSTATUS WINAPI NtRaiseException( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
 714 {
 715     NTSTATUS status = raise_exception( rec, context, first_chance );
 716     if (status == STATUS_SUCCESS) NtSetContextThread( GetCurrentThread(), context );
 717     return status;
 718 }
 719
 720 /***********************************************************************
 721  *              RtlRaiseException (NTDLL.@)
 722  */
 723 void WINAPI RtlRaiseException( EXCEPTION_RECORD *rec )
 724 {
 725     CONTEXT context;
 726     NTSTATUS status;
 727
 728     RtlCaptureContext( &context );
 729     /*rec->ExceptionAddress = (void *)context.Iar;*/
 730     status = raise_exception( rec, &context, TRUE );
 731     if (status) raise_status( status, rec );
 732 }
 733
 734 /*************************************************************************
 735  *             RtlCaptureStackBackTrace (NTDLL.@)
 736  */
 737 USHORT WINAPI RtlCaptureStackBackTrace( ULONG skip, ULONG count, PVOID *buffer, ULONG *hash )
 738 {
 739     FIXME( "(%d, %d, %p, %p) stub!\n", skip, count, buffer, hash );
 740     return 0;
 741 }
 742
 743 /***********************************************************************
 744  *           call_thread_entry_point
 745  */
 746 void call_thread_entry_point( LPTHREAD_START_ROUTINE entry, void *arg )
 747 {
 748     __TRY
 749     {
 750         exit_thread( entry( arg ));
 751     }
 752     __EXCEPT(unhandled_exception_filter)
 753     {
 754         NtTerminateThread( GetCurrentThread(), GetExceptionCode() );
 755     }
 756     __ENDTRY
 757     abort();  /* should not be reached */
 758 }
 759
 760 /***********************************************************************
 761  *           RtlExitUserThread  (NTDLL.@)
 762  */
 763 void WINAPI RtlExitUserThread( ULONG status )
 764 {
 765     exit_thread( status );
 766 }
 767
 768 /***********************************************************************
 769  *           abort_thread
 770  */
 771 void abort_thread( int status )
 772 {
 773     terminate_thread( status );
 774 }
 775
 776 /**********************************************************************
 777  *              DbgBreakPoint   (NTDLL.@)
 778  */
 779 void WINAPI DbgBreakPoint(void)
 780 {
 781      kill(getpid(), SIGTRAP);
 782 }
 783
 784 /**********************************************************************
 785  *              DbgUserBreakPoint   (NTDLL.@)
 786  */
 787 void WINAPI DbgUserBreakPoint(void)
 788 {
 789      kill(getpid(), SIGTRAP);
 790 }
 791
 792 /**********************************************************************
 793  *           NtCurrentTeb   (NTDLL.@)
 794  */
 795 TEB * WINAPI NtCurrentTeb(void)
 796 {
 797     return pthread_getspecific( teb_key );
 798 }
 799
 800 #endif  /* __arm__ */