2 * Sparc signal handling routines
4 * Copyright 1999 Ulrich Weigand
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.
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.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 #include <sys/ucontext.h>
35 #include "wine/exception.h"
37 #include "stackframe.h"
39 #include "wine/debug.h"
41 WINE_DEFAULT_DEBUG_CHANNEL(seh);
43 static sigset_t all_sigs;
46 * FIXME: All this works only on Solaris for now
49 /**********************************************************************
52 static void save_context( CONTEXT *context, ucontext_t *ucontext )
54 /* Special registers */
55 context->psr = ucontext->uc_mcontext.gregs[REG_PSR];
56 context->pc = ucontext->uc_mcontext.gregs[REG_PC];
57 context->npc = ucontext->uc_mcontext.gregs[REG_nPC];
58 context->y = ucontext->uc_mcontext.gregs[REG_Y];
59 context->wim = 0; /* FIXME */
60 context->tbr = 0; /* FIXME */
62 /* Global registers */
63 context->g0 = 0; /* always */
64 context->g1 = ucontext->uc_mcontext.gregs[REG_G1];
65 context->g2 = ucontext->uc_mcontext.gregs[REG_G2];
66 context->g3 = ucontext->uc_mcontext.gregs[REG_G3];
67 context->g4 = ucontext->uc_mcontext.gregs[REG_G4];
68 context->g5 = ucontext->uc_mcontext.gregs[REG_G5];
69 context->g6 = ucontext->uc_mcontext.gregs[REG_G6];
70 context->g7 = ucontext->uc_mcontext.gregs[REG_G7];
72 /* Current 'out' registers */
73 context->o0 = ucontext->uc_mcontext.gregs[REG_O0];
74 context->o1 = ucontext->uc_mcontext.gregs[REG_O1];
75 context->o2 = ucontext->uc_mcontext.gregs[REG_O2];
76 context->o3 = ucontext->uc_mcontext.gregs[REG_O3];
77 context->o4 = ucontext->uc_mcontext.gregs[REG_O4];
78 context->o5 = ucontext->uc_mcontext.gregs[REG_O5];
79 context->o6 = ucontext->uc_mcontext.gregs[REG_O6];
80 context->o7 = ucontext->uc_mcontext.gregs[REG_O7];
82 /* FIXME: what if the current register window isn't saved? */
83 if ( ucontext->uc_mcontext.gwins && ucontext->uc_mcontext.gwins->wbcnt > 0 )
85 /* Current 'local' registers from first register window */
86 context->l0 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[0];
87 context->l1 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[1];
88 context->l2 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[2];
89 context->l3 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[3];
90 context->l4 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[4];
91 context->l5 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[5];
92 context->l6 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[6];
93 context->l7 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[7];
95 /* Current 'in' registers from first register window */
96 context->i0 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[0];
97 context->i1 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[1];
98 context->i2 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[2];
99 context->i3 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[3];
100 context->i4 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[4];
101 context->i5 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[5];
102 context->i6 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[6];
103 context->i7 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[7];
107 /**********************************************************************
110 static void restore_context( CONTEXT *context, ucontext_t *ucontext )
115 /**********************************************************************
118 static void save_fpu( CONTEXT *context, ucontext_t *ucontext )
123 /**********************************************************************
126 static void restore_fpu( CONTEXT *context, ucontext_t *ucontext )
132 /**********************************************************************
135 * Handler for SIGSEGV.
137 static void segv_handler( int signal, siginfo_t *info, ucontext_t *ucontext )
139 EXCEPTION_RECORD rec;
142 /* we want the page-fault case to be fast */
143 if ( info->si_code == SEGV_ACCERR )
144 if (VIRTUAL_HandleFault( (LPVOID)info->si_addr )) return;
146 save_context( &context, ucontext );
147 rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
148 rec.ExceptionRecord = NULL;
149 rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
150 rec.ExceptionAddress = (LPVOID)context.pc;
151 rec.NumberParameters = 2;
152 rec.ExceptionInformation[0] = 0; /* FIXME: read/write access ? */
153 rec.ExceptionInformation[1] = (DWORD)info->si_addr;
155 EXC_RtlRaiseException( &rec, &context );
156 restore_context( &context, ucontext );
159 /**********************************************************************
162 * Handler for SIGBUS.
164 static void bus_handler( int signal, siginfo_t *info, ucontext_t *ucontext )
166 EXCEPTION_RECORD rec;
169 save_context( &context, ucontext );
170 rec.ExceptionRecord = NULL;
171 rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
172 rec.ExceptionAddress = (LPVOID)context.pc;
173 rec.NumberParameters = 0;
175 if ( info->si_code == BUS_ADRALN )
176 rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
178 rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
180 EXC_RtlRaiseException( &rec, &context );
181 restore_context( &context, ucontext );
184 /**********************************************************************
187 * Handler for SIGILL.
189 static void ill_handler( int signal, siginfo_t *info, ucontext_t *ucontext )
191 EXCEPTION_RECORD rec;
194 switch ( info->si_code )
201 rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
206 rec.ExceptionCode = EXCEPTION_PRIV_INSTRUCTION;
210 rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
214 save_context( &context, ucontext );
215 rec.ExceptionRecord = NULL;
216 rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
217 rec.ExceptionAddress = (LPVOID)context.pc;
218 rec.NumberParameters = 0;
219 EXC_RtlRaiseException( &rec, &context );
220 restore_context( &context, ucontext );
224 /**********************************************************************
227 * Handler for SIGTRAP.
229 static void trap_handler( int signal, siginfo_t *info, ucontext_t *ucontext )
231 EXCEPTION_RECORD rec;
234 switch ( info->si_code )
237 rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
241 rec.ExceptionCode = EXCEPTION_BREAKPOINT;
245 save_context( &context, ucontext );
246 rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
247 rec.ExceptionRecord = NULL;
248 rec.ExceptionAddress = (LPVOID)context.pc;
249 rec.NumberParameters = 0;
250 EXC_RtlRaiseException( &rec, &context );
251 restore_context( &context, ucontext );
255 /**********************************************************************
258 * Handler for SIGFPE.
260 static void fpe_handler( int signal, siginfo_t *info, ucontext_t *ucontext )
262 EXCEPTION_RECORD rec;
265 switch ( info->si_code )
268 rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
271 rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
274 rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
277 rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
280 rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
283 rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
286 rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
290 rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
294 save_context( &context, ucontext );
295 save_fpu( &context, ucontext );
296 rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
297 rec.ExceptionRecord = NULL;
298 rec.ExceptionAddress = (LPVOID)context.pc;
299 rec.NumberParameters = 0;
300 EXC_RtlRaiseException( &rec, &context );
301 restore_context( &context, ucontext );
302 restore_fpu( &context, ucontext );
306 /**********************************************************************
309 * Handler for SIGINT.
311 static void int_handler( int signal, siginfo_t *info, ucontext_t *ucontext )
313 EXCEPTION_RECORD rec;
316 save_context( &context, ucontext );
317 rec.ExceptionCode = CONTROL_C_EXIT;
318 rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
319 rec.ExceptionRecord = NULL;
320 rec.ExceptionAddress = (LPVOID)context.pc;
321 rec.NumberParameters = 0;
322 EXC_RtlRaiseException( &rec, &context );
323 restore_context( &context, ucontext );
327 /***********************************************************************
330 * Set a signal handler
332 static int set_handler( int sig, void (*func)() )
334 struct sigaction sig_act;
336 sig_act.sa_handler = NULL;
337 sig_act.sa_sigaction = func;
338 sigemptyset( &sig_act.sa_mask );
339 sig_act.sa_flags = SA_SIGINFO;
341 return sigaction( sig, &sig_act, NULL );
345 /***********************************************************************
348 * Unblock signals. Called from EXC_RtlRaiseException.
350 void SIGNAL_Unblock( void )
352 sigprocmask( SIG_UNBLOCK, &all_sigs, NULL );
356 /**********************************************************************
359 BOOL SIGNAL_Init(void)
361 /* ignore SIGPIPE so that WINSOCK can get a EPIPE error instead */
362 signal( SIGPIPE, SIG_IGN );
363 /* automatic child reaping to avoid zombies */
364 signal( SIGCHLD, SIG_IGN );
366 sigfillset( &all_sigs );
368 if (set_handler( SIGINT, (void (*)())int_handler ) == -1) goto error;
369 if (set_handler( SIGFPE, (void (*)())fpe_handler ) == -1) goto error;
370 if (set_handler( SIGSEGV, (void (*)())segv_handler ) == -1) goto error;
371 if (set_handler( SIGILL, (void (*)())ill_handler ) == -1) goto error;
372 if (set_handler( SIGBUS, (void (*)())bus_handler ) == -1) goto error;
373 if (set_handler( SIGTRAP, (void (*)())trap_handler ) == -1) goto error;
382 /**********************************************************************
385 void SIGNAL_Reset(void)
389 /* block the async signals */
390 sigemptyset( &block_set );
391 sigaddset( &block_set, SIGALRM );
392 sigaddset( &block_set, SIGIO );
393 sigaddset( &block_set, SIGHUP );
394 sigaddset( &block_set, SIGUSR2 );
395 sigprocmask( SIG_BLOCK, &block_set, NULL );
397 /* restore default handlers */
398 signal( SIGINT, SIG_DFL );
399 signal( SIGFPE, SIG_DFL );
400 signal( SIGSEGV, SIG_DFL );
401 signal( SIGILL, SIG_DFL );
402 signal( SIGBUS, SIG_DFL );
403 signal( SIGTRAP, SIG_DFL );
407 /**********************************************************************
410 void __wine_enter_vm86( CONTEXT *context )
412 MESSAGE("vm86 mode not supported on this platform\n");
415 /**********************************************************************
416 * DbgBreakPoint (NTDLL.@)
418 void WINAPI DbgBreakPoint(void)
423 /**********************************************************************
424 * DbgUserBreakPoint (NTDLL.@)
426 void WINAPI DbgUserBreakPoint(void)
431 #endif /* __sparc__ */