dlls/ntdll/signal_powerpc.c

   1 /*
   2  * PowerPC signal handling routines
   3  *
   4  * Copyright 2002 Marcus Meissner, SuSE Linux AG
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #ifdef __powerpc__
  22
  23 #include "config.h"
  24 #include "wine/port.h"
  25
  26 #include <assert.h>
  27 #include <signal.h>
  28 #include <stdlib.h>
  29 #include <stdarg.h>
  30 #include <stdio.h>
  31 #ifdef HAVE_UNISTD_H
  32 # include <unistd.h>
  33 #endif
  34
  35 #ifdef HAVE_SYS_PARAM_H
  36 # include <sys/param.h>
  37 #endif
  38 #ifdef HAVE_SYSCALL_H
  39 # include <syscall.h>
  40 #else
  41 # ifdef HAVE_SYS_SYSCALL_H
  42 #  include <sys/syscall.h>
  43 # endif
  44 #endif
  45
  46 #ifdef HAVE_SYS_VM86_H
  47 # include <sys/vm86.h>
  48 #endif
  49
  50 #ifdef HAVE_SYS_SIGNAL_H
  51 # include <sys/signal.h>
  52 #endif
  53
  54 #include "ntstatus.h"
  55 #define WIN32_NO_STATUS
  56 #include "windef.h"
  57 #include "winternl.h"
  58 #include "wine/library.h"
  59 #include "wine/exception.h"
  60 #include "ntdll_misc.h"
  61 #include "wine/debug.h"
  62
  63 WINE_DEFAULT_DEBUG_CHANNEL(seh);
  64
  65 static pthread_key_t teb_key;
  66
  67 /***********************************************************************
  68  * signal context platform-specific definitions
  69  */
  70 #ifdef linux
  71
  72 typedef struct ucontext SIGCONTEXT;
  73
  74 # define HANDLER_DEF(name) void name( int __signal, struct siginfo *__siginfo, SIGCONTEXT *__context )
  75 # define HANDLER_CONTEXT (__context)
  76
  77 /* All Registers access - only for local access */
  78 # define REG_sig(reg_name, context)             ((context)->uc_mcontext.regs->reg_name)
  79
  80
  81 /* Gpr Registers access  */
  82 # define GPR_sig(reg_num, context)              REG_sig(gpr[reg_num], context)
  83
  84 # define IAR_sig(context)                       REG_sig(nip, context)   /* Program counter */
  85 # define MSR_sig(context)                       REG_sig(msr, context)   /* Machine State Register (Supervisor) */
  86 # define CTR_sig(context)                       REG_sig(ctr, context)   /* Count register */
  87
  88 # define XER_sig(context)                       REG_sig(xer, context) /* User's integer exception register */
  89 # define LR_sig(context)                        REG_sig(link, context) /* Link register */
  90 # define CR_sig(context)                        REG_sig(ccr, context) /* Condition register */
  91
  92 /* Float Registers access  */
  93 # define FLOAT_sig(reg_num, context)            (((double*)((char*)((context)->uc_mcontext.regs+48*4)))[reg_num])
  94
  95 # define FPSCR_sig(context)                     (*(int*)((char*)((context)->uc_mcontext.regs+(48+32*2)*4)))
  96
  97 /* Exception Registers access */
  98 # define DAR_sig(context)                       REG_sig(dar, context)
  99 # define DSISR_sig(context)                     REG_sig(dsisr, context)
 100 # define TRAP_sig(context)                      REG_sig(trap, context)
 101
 102 #endif /* linux */
 103
 104 #ifdef __APPLE__
 105
 106 # include <sys/ucontext.h>
 107
 108 # include <sys/types.h>
 109 typedef siginfo_t siginfo;
 110
 111 typedef struct ucontext SIGCONTEXT;
 112
 113
 114 # define HANDLER_DEF(name) void name( int __signal, siginfo *__siginfo, SIGCONTEXT *__context )
 115 # define HANDLER_CONTEXT (__context)
 116
 117 /* All Registers access - only for local access */
 118 # define REG_sig(reg_name, context)             ((context)->uc_mcontext->ss.reg_name)
 119 # define FLOATREG_sig(reg_name, context)        ((context)->uc_mcontext->fs.reg_name)
 120 # define EXCEPREG_sig(reg_name, context)        ((context)->uc_mcontext->es.reg_name)
 121 # define VECREG_sig(reg_name, context)          ((context)->uc_mcontext->vs.reg_name)
 122
 123 /* Gpr Registers access */
 124 # define GPR_sig(reg_num, context)              REG_sig(r##reg_num, context)
 125
 126 # define IAR_sig(context)                       REG_sig(srr0, context)  /* Program counter */
 127 # define MSR_sig(context)                       REG_sig(srr1, context)  /* Machine State Register (Supervisor) */
 128 # define CTR_sig(context)                       REG_sig(ctr, context)
 129
 130 # define XER_sig(context)                       REG_sig(xer, context) /* Link register */
 131 # define LR_sig(context)                        REG_sig(lr, context)  /* User's integer exception register */
 132 # define CR_sig(context)                        REG_sig(cr, context)  /* Condition register */
 133
 134 /* Float Registers access */
 135 # define FLOAT_sig(reg_num, context)            FLOATREG_sig(fpregs[reg_num], context)
 136
 137 # define FPSCR_sig(context)                     FLOATREG_sig(fpscr, context)
 138
 139 /* Exception Registers access */
 140 # define DAR_sig(context)                       EXCEPREG_sig(dar, context)     /* Fault registers for coredump */
 141 # define DSISR_sig(context)                     EXCEPREG_sig(dsisr, context)
 142 # define TRAP_sig(context)                      EXCEPREG_sig(exception, context) /* number of powerpc exception taken */
 143
 144 /* Signal defs : Those are undefined on darwin
 145 SIGBUS
 146 #undef BUS_ADRERR
 147 #undef BUS_OBJERR
 148 SIGILL
 149 #undef ILL_ILLOPN
 150 #undef ILL_ILLTRP
 151 #undef ILL_ILLADR
 152 #undef ILL_COPROC
 153 #undef ILL_PRVREG
 154 #undef ILL_BADSTK
 155 SIGTRAP
 156 #undef TRAP_BRKPT
 157 #undef TRAP_TRACE
 158 SIGFPE
 159 */
 160
 161 #endif /* __APPLE__ */
 162
 163
 164
 165 typedef int (*wine_signal_handler)(unsigned int sig);
 166
 167 static wine_signal_handler handlers[256];
 168
 169 /***********************************************************************
 170  *           dispatch_signal
 171  */
 172 static inline int dispatch_signal(unsigned int sig)
 173 {
 174     if (handlers[sig] == NULL) return 0;
 175     return handlers[sig](sig);
 176 }
 177
 178 /***********************************************************************
 179  *           save_context
 180  *
 181  * Set the register values from a sigcontext.
 182  */
 183 static void save_context( CONTEXT *context, const SIGCONTEXT *sigcontext )
 184 {
 185
 186 #define C(x) context->Gpr##x = GPR_sig(x,sigcontext)
 187         /* Save Gpr registers */
 188         C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
 189         C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
 190         C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
 191         C(31);
 192 #undef C
 193
 194         context->Iar = IAR_sig(sigcontext);  /* Program Counter */
 195         context->Msr = MSR_sig(sigcontext);  /* Machine State Register (Supervisor) */
 196         context->Ctr = CTR_sig(sigcontext);
 197
 198         context->Xer = XER_sig(sigcontext);
 199         context->Lr  = LR_sig(sigcontext);
 200         context->Cr  = CR_sig(sigcontext);
 201
 202         /* Saving Exception regs */
 203         context->Dar   = DAR_sig(sigcontext);
 204         context->Dsisr = DSISR_sig(sigcontext);
 205         context->Trap  = TRAP_sig(sigcontext);
 206 }
 207
 208
 209 /***********************************************************************
 210  *           restore_context
 211  *
 212  * Build a sigcontext from the register values.
 213  */
 214 static void restore_context( const CONTEXT *context, SIGCONTEXT *sigcontext )
 215 {
 216
 217 #define C(x)  GPR_sig(x,sigcontext) = context->Gpr##x
 218         C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
 219         C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
 220         C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
 221         C(31);
 222 #undef C
 223
 224         IAR_sig(sigcontext) = context->Iar;  /* Program Counter */
 225         MSR_sig(sigcontext) = context->Msr;  /* Machine State Register (Supervisor) */
 226         CTR_sig(sigcontext) = context->Ctr;
 227
 228         XER_sig(sigcontext) = context->Xer;
 229         LR_sig(sigcontext) = context->Lr;
 230         CR_sig(sigcontext) = context->Cr;
 231
 232         /* Setting Exception regs */
 233         DAR_sig(sigcontext) = context->Dar;
 234         DSISR_sig(sigcontext) = context->Dsisr;
 235         TRAP_sig(sigcontext) = context->Trap;
 236 }
 237
 238
 239 /***********************************************************************
 240  *           save_fpu
 241  *
 242  * Set the FPU context from a sigcontext.
 243  */
 244 static inline void save_fpu( CONTEXT *context, const SIGCONTEXT *sigcontext )
 245 {
 246 #define C(x)   context->Fpr##x = FLOAT_sig(x,sigcontext)
 247         C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
 248         C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
 249         C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
 250         C(31);
 251 #undef C
 252         context->Fpscr = FPSCR_sig(sigcontext);
 253 }
 254
 255
 256 /***********************************************************************
 257  *           restore_fpu
 258  *
 259  * Restore the FPU context to a sigcontext.
 260  */
 261 static inline void restore_fpu( CONTEXT *context, const SIGCONTEXT *sigcontext )
 262 {
 263 #define C(x)  FLOAT_sig(x,sigcontext) = context->Fpr##x
 264         C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
 265         C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
 266         C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
 267         C(31);
 268 #undef C
 269         FPSCR_sig(sigcontext) = context->Fpscr;
 270 }
 271
 272
 273 /***********************************************************************
 274  *              RtlCaptureContext (NTDLL.@)
 275  */
 276 void WINAPI RtlCaptureContext( CONTEXT *context )
 277 {
 278     FIXME("not implemented\n");
 279     memset( context, 0, sizeof(*context) );
 280 }
 281
 282
 283 /***********************************************************************
 284  *           set_cpu_context
 285  *
 286  * Set the new CPU context.
 287  */
 288 void set_cpu_context( const CONTEXT *context )
 289 {
 290     FIXME("not implemented\n");
 291 }
 292
 293
 294 /***********************************************************************
 295  *           copy_context
 296  *
 297  * Copy a register context according to the flags.
 298  */
 299 void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
 300 {
 301     if (flags & CONTEXT_CONTROL)
 302     {
 303         to->Msr   = from->Msr;
 304         to->Ctr   = from->Ctr;
 305         to->Iar   = from->Iar;
 306         to->Lr    = from->Lr;
 307         to->Dar   = from->Dar;
 308         to->Dsisr = from->Dsisr;
 309         to->Trap  = from->Trap;
 310     }
 311     if (flags & CONTEXT_INTEGER)
 312     {
 313         to->Gpr0  = from->Gpr0;
 314         to->Gpr1  = from->Gpr1;
 315         to->Gpr2  = from->Gpr2;
 316         to->Gpr3  = from->Gpr3;
 317         to->Gpr4  = from->Gpr4;
 318         to->Gpr5  = from->Gpr5;
 319         to->Gpr6  = from->Gpr6;
 320         to->Gpr7  = from->Gpr7;
 321         to->Gpr8  = from->Gpr8;
 322         to->Gpr9  = from->Gpr9;
 323         to->Gpr10 = from->Gpr10;
 324         to->Gpr11 = from->Gpr11;
 325         to->Gpr12 = from->Gpr12;
 326         to->Gpr13 = from->Gpr13;
 327         to->Gpr14 = from->Gpr14;
 328         to->Gpr15 = from->Gpr15;
 329         to->Gpr16 = from->Gpr16;
 330         to->Gpr17 = from->Gpr17;
 331         to->Gpr18 = from->Gpr18;
 332         to->Gpr19 = from->Gpr19;
 333         to->Gpr20 = from->Gpr20;
 334         to->Gpr21 = from->Gpr21;
 335         to->Gpr22 = from->Gpr22;
 336         to->Gpr23 = from->Gpr23;
 337         to->Gpr24 = from->Gpr24;
 338         to->Gpr25 = from->Gpr25;
 339         to->Gpr26 = from->Gpr26;
 340         to->Gpr27 = from->Gpr27;
 341         to->Gpr28 = from->Gpr28;
 342         to->Gpr29 = from->Gpr29;
 343         to->Gpr30 = from->Gpr30;
 344         to->Gpr31 = from->Gpr31;
 345         to->Xer   = from->Xer;
 346         to->Cr    = from->Cr;
 347     }
 348     if (flags & CONTEXT_FLOATING_POINT)
 349     {
 350         to->Fpr0  = from->Fpr0;
 351         to->Fpr1  = from->Fpr1;
 352         to->Fpr2  = from->Fpr2;
 353         to->Fpr3  = from->Fpr3;
 354         to->Fpr4  = from->Fpr4;
 355         to->Fpr5  = from->Fpr5;
 356         to->Fpr6  = from->Fpr6;
 357         to->Fpr7  = from->Fpr7;
 358         to->Fpr8  = from->Fpr8;
 359         to->Fpr9  = from->Fpr9;
 360         to->Fpr10 = from->Fpr10;
 361         to->Fpr11 = from->Fpr11;
 362         to->Fpr12 = from->Fpr12;
 363         to->Fpr13 = from->Fpr13;
 364         to->Fpr14 = from->Fpr14;
 365         to->Fpr15 = from->Fpr15;
 366         to->Fpr16 = from->Fpr16;
 367         to->Fpr17 = from->Fpr17;
 368         to->Fpr18 = from->Fpr18;
 369         to->Fpr19 = from->Fpr19;
 370         to->Fpr20 = from->Fpr20;
 371         to->Fpr21 = from->Fpr21;
 372         to->Fpr22 = from->Fpr22;
 373         to->Fpr23 = from->Fpr23;
 374         to->Fpr24 = from->Fpr24;
 375         to->Fpr25 = from->Fpr25;
 376         to->Fpr26 = from->Fpr26;
 377         to->Fpr27 = from->Fpr27;
 378         to->Fpr28 = from->Fpr28;
 379         to->Fpr29 = from->Fpr29;
 380         to->Fpr30 = from->Fpr30;
 381         to->Fpr31 = from->Fpr31;
 382         to->Fpscr = from->Fpscr;
 383     }
 384 }
 385
 386
 387 /***********************************************************************
 388  *           context_to_server
 389  *
 390  * Convert a register context to the server format.
 391  */
 392 NTSTATUS context_to_server( context_t *to, const CONTEXT *from )
 393 {
 394     DWORD flags = from->ContextFlags;  /* no CPU id? */
 395
 396     memset( to, 0, sizeof(*to) );
 397     to->cpu = CPU_POWERPC;
 398
 399     if (flags & CONTEXT_CONTROL)
 400     {
 401         to->flags |= SERVER_CTX_CONTROL;
 402         to->ctl.powerpc_regs.iar   = from->Iar;
 403         to->ctl.powerpc_regs.msr   = from->Msr;
 404         to->ctl.powerpc_regs.ctr   = from->Ctr;
 405         to->ctl.powerpc_regs.lr    = from->Lr;
 406         to->ctl.powerpc_regs.dar   = from->Dar;
 407         to->ctl.powerpc_regs.dsisr = from->Dsisr;
 408         to->ctl.powerpc_regs.trap  = from->Trap;
 409     }
 410     if (flags & CONTEXT_INTEGER)
 411     {
 412         to->flags |= SERVER_CTX_INTEGER;
 413         to->integer.powerpc_regs.gpr[0]  = from->Gpr0;
 414         to->integer.powerpc_regs.gpr[1]  = from->Gpr1;
 415         to->integer.powerpc_regs.gpr[2]  = from->Gpr2;
 416         to->integer.powerpc_regs.gpr[3]  = from->Gpr3;
 417         to->integer.powerpc_regs.gpr[4]  = from->Gpr4;
 418         to->integer.powerpc_regs.gpr[5]  = from->Gpr5;
 419         to->integer.powerpc_regs.gpr[6]  = from->Gpr6;
 420         to->integer.powerpc_regs.gpr[7]  = from->Gpr7;
 421         to->integer.powerpc_regs.gpr[8]  = from->Gpr8;
 422         to->integer.powerpc_regs.gpr[9]  = from->Gpr9;
 423         to->integer.powerpc_regs.gpr[10] = from->Gpr10;
 424         to->integer.powerpc_regs.gpr[11] = from->Gpr11;
 425         to->integer.powerpc_regs.gpr[12] = from->Gpr12;
 426         to->integer.powerpc_regs.gpr[13] = from->Gpr13;
 427         to->integer.powerpc_regs.gpr[14] = from->Gpr14;
 428         to->integer.powerpc_regs.gpr[15] = from->Gpr15;
 429         to->integer.powerpc_regs.gpr[16] = from->Gpr16;
 430         to->integer.powerpc_regs.gpr[17] = from->Gpr17;
 431         to->integer.powerpc_regs.gpr[18] = from->Gpr18;
 432         to->integer.powerpc_regs.gpr[19] = from->Gpr19;
 433         to->integer.powerpc_regs.gpr[20] = from->Gpr20;
 434         to->integer.powerpc_regs.gpr[21] = from->Gpr21;
 435         to->integer.powerpc_regs.gpr[22] = from->Gpr22;
 436         to->integer.powerpc_regs.gpr[23] = from->Gpr23;
 437         to->integer.powerpc_regs.gpr[24] = from->Gpr24;
 438         to->integer.powerpc_regs.gpr[25] = from->Gpr25;
 439         to->integer.powerpc_regs.gpr[26] = from->Gpr26;
 440         to->integer.powerpc_regs.gpr[27] = from->Gpr27;
 441         to->integer.powerpc_regs.gpr[28] = from->Gpr28;
 442         to->integer.powerpc_regs.gpr[29] = from->Gpr29;
 443         to->integer.powerpc_regs.gpr[30] = from->Gpr30;
 444         to->integer.powerpc_regs.gpr[31] = from->Gpr31;
 445         to->integer.powerpc_regs.xer     = from->Xer;
 446         to->integer.powerpc_regs.cr      = from->Cr;
 447     }
 448     if (flags & CONTEXT_FLOATING_POINT)
 449     {
 450         to->flags |= SERVER_CTX_FLOATING_POINT;
 451         to->fp.powerpc_regs.fpr[0]  = from->Fpr0;
 452         to->fp.powerpc_regs.fpr[1]  = from->Fpr1;
 453         to->fp.powerpc_regs.fpr[2]  = from->Fpr2;
 454         to->fp.powerpc_regs.fpr[3]  = from->Fpr3;
 455         to->fp.powerpc_regs.fpr[4]  = from->Fpr4;
 456         to->fp.powerpc_regs.fpr[5]  = from->Fpr5;
 457         to->fp.powerpc_regs.fpr[6]  = from->Fpr6;
 458         to->fp.powerpc_regs.fpr[7]  = from->Fpr7;
 459         to->fp.powerpc_regs.fpr[8]  = from->Fpr8;
 460         to->fp.powerpc_regs.fpr[9]  = from->Fpr9;
 461         to->fp.powerpc_regs.fpr[10] = from->Fpr10;
 462         to->fp.powerpc_regs.fpr[11] = from->Fpr11;
 463         to->fp.powerpc_regs.fpr[12] = from->Fpr12;
 464         to->fp.powerpc_regs.fpr[13] = from->Fpr13;
 465         to->fp.powerpc_regs.fpr[14] = from->Fpr14;
 466         to->fp.powerpc_regs.fpr[15] = from->Fpr15;
 467         to->fp.powerpc_regs.fpr[16] = from->Fpr16;
 468         to->fp.powerpc_regs.fpr[17] = from->Fpr17;
 469         to->fp.powerpc_regs.fpr[18] = from->Fpr18;
 470         to->fp.powerpc_regs.fpr[19] = from->Fpr19;
 471         to->fp.powerpc_regs.fpr[20] = from->Fpr20;
 472         to->fp.powerpc_regs.fpr[21] = from->Fpr21;
 473         to->fp.powerpc_regs.fpr[22] = from->Fpr22;
 474         to->fp.powerpc_regs.fpr[23] = from->Fpr23;
 475         to->fp.powerpc_regs.fpr[24] = from->Fpr24;
 476         to->fp.powerpc_regs.fpr[25] = from->Fpr25;
 477         to->fp.powerpc_regs.fpr[26] = from->Fpr26;
 478         to->fp.powerpc_regs.fpr[27] = from->Fpr27;
 479         to->fp.powerpc_regs.fpr[28] = from->Fpr28;
 480         to->fp.powerpc_regs.fpr[29] = from->Fpr29;
 481         to->fp.powerpc_regs.fpr[30] = from->Fpr30;
 482         to->fp.powerpc_regs.fpr[31] = from->Fpr31;
 483         to->fp.powerpc_regs.fpscr   = from->Fpscr;
 484     }
 485     return STATUS_SUCCESS;
 486 }
 487
 488
 489 /***********************************************************************
 490  *           context_from_server
 491  *
 492  * Convert a register context from the server format.
 493  */
 494 NTSTATUS context_from_server( CONTEXT *to, const context_t *from )
 495 {
 496     if (from->cpu != CPU_POWERPC) return STATUS_INVALID_PARAMETER;
 497
 498     to->ContextFlags = 0;  /* no CPU id? */
 499     if (from->flags & SERVER_CTX_CONTROL)
 500     {
 501         to->ContextFlags |= CONTEXT_CONTROL;
 502         to->Msr   = from->ctl.powerpc_regs.msr;
 503         to->Ctr   = from->ctl.powerpc_regs.ctr;
 504         to->Iar   = from->ctl.powerpc_regs.iar;
 505         to->Lr    = from->ctl.powerpc_regs.lr;
 506         to->Dar   = from->ctl.powerpc_regs.dar;
 507         to->Dsisr = from->ctl.powerpc_regs.dsisr;
 508         to->Trap  = from->ctl.powerpc_regs.trap;
 509     }
 510     if (from->flags & SERVER_CTX_INTEGER)
 511     {
 512         to->ContextFlags |= CONTEXT_INTEGER;
 513         to->Gpr0  = from->integer.powerpc_regs.gpr[0];
 514         to->Gpr1  = from->integer.powerpc_regs.gpr[1];
 515         to->Gpr2  = from->integer.powerpc_regs.gpr[2];
 516         to->Gpr3  = from->integer.powerpc_regs.gpr[3];
 517         to->Gpr4  = from->integer.powerpc_regs.gpr[4];
 518         to->Gpr5  = from->integer.powerpc_regs.gpr[5];
 519         to->Gpr6  = from->integer.powerpc_regs.gpr[6];
 520         to->Gpr7  = from->integer.powerpc_regs.gpr[7];
 521         to->Gpr8  = from->integer.powerpc_regs.gpr[8];
 522         to->Gpr9  = from->integer.powerpc_regs.gpr[9];
 523         to->Gpr10 = from->integer.powerpc_regs.gpr[10];
 524         to->Gpr11 = from->integer.powerpc_regs.gpr[11];
 525         to->Gpr12 = from->integer.powerpc_regs.gpr[12];
 526         to->Gpr13 = from->integer.powerpc_regs.gpr[13];
 527         to->Gpr14 = from->integer.powerpc_regs.gpr[14];
 528         to->Gpr15 = from->integer.powerpc_regs.gpr[15];
 529         to->Gpr16 = from->integer.powerpc_regs.gpr[16];
 530         to->Gpr17 = from->integer.powerpc_regs.gpr[17];
 531         to->Gpr18 = from->integer.powerpc_regs.gpr[18];
 532         to->Gpr19 = from->integer.powerpc_regs.gpr[19];
 533         to->Gpr20 = from->integer.powerpc_regs.gpr[20];
 534         to->Gpr21 = from->integer.powerpc_regs.gpr[21];
 535         to->Gpr22 = from->integer.powerpc_regs.gpr[22];
 536         to->Gpr23 = from->integer.powerpc_regs.gpr[23];
 537         to->Gpr24 = from->integer.powerpc_regs.gpr[24];
 538         to->Gpr25 = from->integer.powerpc_regs.gpr[25];
 539         to->Gpr26 = from->integer.powerpc_regs.gpr[26];
 540         to->Gpr27 = from->integer.powerpc_regs.gpr[27];
 541         to->Gpr28 = from->integer.powerpc_regs.gpr[28];
 542         to->Gpr29 = from->integer.powerpc_regs.gpr[29];
 543         to->Gpr30 = from->integer.powerpc_regs.gpr[30];
 544         to->Gpr31 = from->integer.powerpc_regs.gpr[31];
 545         to->Xer   = from->integer.powerpc_regs.xer;
 546         to->Cr    = from->integer.powerpc_regs.cr;
 547     }
 548     if (from->flags & SERVER_CTX_FLOATING_POINT)
 549     {
 550         to->ContextFlags |= CONTEXT_FLOATING_POINT;
 551         to->Fpr0  = from->fp.powerpc_regs.fpr[0];
 552         to->Fpr1  = from->fp.powerpc_regs.fpr[1];
 553         to->Fpr2  = from->fp.powerpc_regs.fpr[2];
 554         to->Fpr3  = from->fp.powerpc_regs.fpr[3];
 555         to->Fpr4  = from->fp.powerpc_regs.fpr[4];
 556         to->Fpr5  = from->fp.powerpc_regs.fpr[5];
 557         to->Fpr6  = from->fp.powerpc_regs.fpr[6];
 558         to->Fpr7  = from->fp.powerpc_regs.fpr[7];
 559         to->Fpr8  = from->fp.powerpc_regs.fpr[8];
 560         to->Fpr9  = from->fp.powerpc_regs.fpr[9];
 561         to->Fpr10 = from->fp.powerpc_regs.fpr[10];
 562         to->Fpr11 = from->fp.powerpc_regs.fpr[11];
 563         to->Fpr12 = from->fp.powerpc_regs.fpr[12];
 564         to->Fpr13 = from->fp.powerpc_regs.fpr[13];
 565         to->Fpr14 = from->fp.powerpc_regs.fpr[14];
 566         to->Fpr15 = from->fp.powerpc_regs.fpr[15];
 567         to->Fpr16 = from->fp.powerpc_regs.fpr[16];
 568         to->Fpr17 = from->fp.powerpc_regs.fpr[17];
 569         to->Fpr18 = from->fp.powerpc_regs.fpr[18];
 570         to->Fpr19 = from->fp.powerpc_regs.fpr[19];
 571         to->Fpr20 = from->fp.powerpc_regs.fpr[20];
 572         to->Fpr21 = from->fp.powerpc_regs.fpr[21];
 573         to->Fpr22 = from->fp.powerpc_regs.fpr[22];
 574         to->Fpr23 = from->fp.powerpc_regs.fpr[23];
 575         to->Fpr24 = from->fp.powerpc_regs.fpr[24];
 576         to->Fpr25 = from->fp.powerpc_regs.fpr[25];
 577         to->Fpr26 = from->fp.powerpc_regs.fpr[26];
 578         to->Fpr27 = from->fp.powerpc_regs.fpr[27];
 579         to->Fpr28 = from->fp.powerpc_regs.fpr[28];
 580         to->Fpr29 = from->fp.powerpc_regs.fpr[29];
 581         to->Fpr30 = from->fp.powerpc_regs.fpr[30];
 582         to->Fpr31 = from->fp.powerpc_regs.fpr[31];
 583         to->Fpscr = from->fp.powerpc_regs.fpscr;
 584     }
 585     return STATUS_SUCCESS;
 586 }
 587
 588
 589 /**********************************************************************
 590  *              get_fpu_code
 591  *
 592  * Get the FPU exception code from the FPU status.
 593  */
 594 static inline DWORD get_fpu_code( const CONTEXT *context )
 595 {
 596     DWORD status  = context->Fpscr;
 597
 598     if (status & 0x01)  /* IE */
 599     {
 600         if (status & 0x40)  /* SF */
 601             return EXCEPTION_FLT_STACK_CHECK;
 602         else
 603             return EXCEPTION_FLT_INVALID_OPERATION;
 604     }
 605     if (status & 0x02) return EXCEPTION_FLT_DENORMAL_OPERAND;  /* DE flag */
 606     if (status & 0x04) return EXCEPTION_FLT_DIVIDE_BY_ZERO;    /* ZE flag */
 607     if (status & 0x08) return EXCEPTION_FLT_OVERFLOW;          /* OE flag */
 608     if (status & 0x10) return EXCEPTION_FLT_UNDERFLOW;         /* UE flag */
 609     if (status & 0x20) return EXCEPTION_FLT_INEXACT_RESULT;    /* PE flag */
 610     return EXCEPTION_FLT_INVALID_OPERATION;  /* generic error */
 611 }
 612
 613 /**********************************************************************
 614  *              do_segv
 615  *
 616  * Implementation of SIGSEGV handler.
 617  */
 618 static void do_segv( CONTEXT *context, int trap, int err, int code, void * addr )
 619 {
 620     EXCEPTION_RECORD rec;
 621
 622     rec.ExceptionRecord  = NULL;
 623     rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
 624     rec.ExceptionAddress = addr;
 625     rec.NumberParameters = 0;
 626
 627     switch (trap) {
 628     case SIGSEGV:
 629         switch ( code & 0xffff ) {
 630         case SEGV_MAPERR:
 631         case SEGV_ACCERR:
 632                 rec.NumberParameters = 2;
 633                 rec.ExceptionInformation[0] = 0; /* FIXME ? */
 634                 rec.ExceptionInformation[1] = (ULONG_PTR)addr;
 635                 if (!(rec.ExceptionCode = virtual_handle_fault(addr, rec.ExceptionInformation[0])))
 636                         return;
 637                 break;
 638         default:FIXME("Unhandled SIGSEGV/%x\n",code);
 639                 break;
 640         }
 641         break;
 642     case SIGBUS:
 643         switch ( code & 0xffff ) {
 644         case BUS_ADRALN:
 645                 rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
 646                 break;
 647 #ifdef BUS_ADRERR
 648         case BUS_ADRERR:
 649 #endif
 650 #ifdef BUS_OBJERR
 651         case BUS_OBJERR:
 652                 /* FIXME: correct for all cases ? */
 653                 rec.NumberParameters = 2;
 654                 rec.ExceptionInformation[0] = 0; /* FIXME ? */
 655                 rec.ExceptionInformation[1] = (ULONG_PTR)addr;
 656                 if (!(rec.ExceptionCode = virtual_handle_fault(addr, rec.ExceptionInformation[0])))
 657                         return;
 658                 break;
 659 #endif
 660         default:FIXME("Unhandled SIGBUS/%x\n",code);
 661                 break;
 662         }
 663         break;
 664     case SIGILL:
 665         switch ( code & 0xffff ) {
 666         case ILL_ILLOPC: /* illegal opcode */
 667 #ifdef ILL_ILLOPN
 668         case ILL_ILLOPN: /* illegal operand */
 669 #endif
 670 #ifdef ILL_ILLADR
 671         case ILL_ILLADR: /* illegal addressing mode */
 672 #endif
 673 #ifdef ILL_ILLTRP
 674         case ILL_ILLTRP: /* illegal trap */
 675 #endif
 676 #ifdef ILL_COPROC
 677         case ILL_COPROC: /* coprocessor error */
 678 #endif
 679                 rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
 680                 break;
 681         case ILL_PRVOPC: /* privileged opcode */
 682 #ifdef ILL_PRVREG
 683         case ILL_PRVREG: /* privileged register */
 684 #endif
 685                 rec.ExceptionCode = EXCEPTION_PRIV_INSTRUCTION;
 686                 break;
 687 #ifdef ILL_BADSTK
 688         case ILL_BADSTK: /* internal stack error */
 689                 rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
 690                 break;
 691 #endif
 692         default:FIXME("Unhandled SIGILL/%x\n", code);
 693                 break;
 694         }
 695         break;
 696     }
 697     __regs_RtlRaiseException( &rec, context );
 698 }
 699
 700 /**********************************************************************
 701  *              do_trap
 702  *
 703  * Implementation of SIGTRAP handler.
 704  */
 705 static void do_trap( CONTEXT *context, int code, void * addr )
 706 {
 707     EXCEPTION_RECORD rec;
 708
 709     rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
 710     rec.ExceptionRecord  = NULL;
 711     rec.ExceptionAddress = addr;
 712     rec.NumberParameters = 0;
 713
 714     /* FIXME: check if we might need to modify PC */
 715     switch (code & 0xffff) {
 716 #ifdef TRAP_BRKPT
 717     case TRAP_BRKPT:
 718         rec.ExceptionCode = EXCEPTION_BREAKPOINT;
 719         break;
 720 #endif
 721 #ifdef TRAP_TRACE
 722     case TRAP_TRACE:
 723         rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
 724         break;
 725 #endif
 726     default:FIXME("Unhandled SIGTRAP/%x\n", code);
 727                 break;
 728     }
 729     __regs_RtlRaiseException( &rec, context );
 730 }
 731
 732 /**********************************************************************
 733  *              do_trap
 734  *
 735  * Implementation of SIGFPE handler.
 736  */
 737 static void do_fpe( CONTEXT *context, int code, void * addr )
 738 {
 739     EXCEPTION_RECORD rec;
 740
 741     switch ( code  & 0xffff ) {
 742 #ifdef FPE_FLTSUB
 743     case FPE_FLTSUB:
 744         rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
 745         break;
 746 #endif
 747 #ifdef FPE_INTDIV
 748     case FPE_INTDIV:
 749         rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
 750         break;
 751 #endif
 752 #ifdef FPE_INTOVF
 753     case FPE_INTOVF:
 754         rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
 755         break;
 756 #endif
 757 #ifdef FPE_FLTDIV
 758     case FPE_FLTDIV:
 759         rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
 760         break;
 761 #endif
 762 #ifdef FPE_FLTOVF
 763     case FPE_FLTOVF:
 764         rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
 765         break;
 766 #endif
 767 #ifdef FPE_FLTUND
 768     case FPE_FLTUND:
 769         rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
 770         break;
 771 #endif
 772 #ifdef FPE_FLTRES
 773     case FPE_FLTRES:
 774         rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
 775         break;
 776 #endif
 777 #ifdef FPE_FLTINV
 778     case FPE_FLTINV:
 779 #endif
 780     default:
 781         rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
 782         break;
 783     }
 784     rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
 785     rec.ExceptionRecord  = NULL;
 786     rec.ExceptionAddress = addr;
 787     rec.NumberParameters = 0;
 788     __regs_RtlRaiseException( &rec, context );
 789 }
 790
 791 /**********************************************************************
 792  *              segv_handler
 793  *
 794  * Handler for SIGSEGV and related errors.
 795  */
 796 static HANDLER_DEF(segv_handler)
 797 {
 798     CONTEXT context;
 799     save_context( &context, HANDLER_CONTEXT );
 800     do_segv( &context, __siginfo->si_signo, __siginfo->si_errno, __siginfo->si_code, __siginfo->si_addr );
 801     restore_context( &context, HANDLER_CONTEXT );
 802 }
 803
 804 /**********************************************************************
 805  *              trap_handler
 806  *
 807  * Handler for SIGTRAP.
 808  */
 809 static HANDLER_DEF(trap_handler)
 810 {
 811     CONTEXT context;
 812     save_context( &context, HANDLER_CONTEXT );
 813     do_trap( &context, __siginfo->si_code, __siginfo->si_addr );
 814     restore_context( &context, HANDLER_CONTEXT );
 815 }
 816
 817 /**********************************************************************
 818  *              fpe_handler
 819  *
 820  * Handler for SIGFPE.
 821  */
 822 static HANDLER_DEF(fpe_handler)
 823 {
 824     CONTEXT context;
 825     save_fpu( &context, HANDLER_CONTEXT );
 826     save_context( &context, HANDLER_CONTEXT );
 827     do_fpe( &context,  __siginfo->si_code, __siginfo->si_addr );
 828     restore_context( &context, HANDLER_CONTEXT );
 829     restore_fpu( &context, HANDLER_CONTEXT );
 830 }
 831
 832 /**********************************************************************
 833  *              int_handler
 834  *
 835  * Handler for SIGINT.
 836  */
 837 static HANDLER_DEF(int_handler)
 838 {
 839     if (!dispatch_signal(SIGINT))
 840     {
 841         EXCEPTION_RECORD rec;
 842         CONTEXT context;
 843
 844         save_context( &context, HANDLER_CONTEXT );
 845         rec.ExceptionCode    = CONTROL_C_EXIT;
 846         rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
 847         rec.ExceptionRecord  = NULL;
 848         rec.ExceptionAddress = (LPVOID)context.Iar;
 849         rec.NumberParameters = 0;
 850         __regs_RtlRaiseException( &rec, &context );
 851         restore_context( &context, HANDLER_CONTEXT );
 852     }
 853 }
 854
 855
 856 /**********************************************************************
 857  *              abrt_handler
 858  *
 859  * Handler for SIGABRT.
 860  */
 861 static HANDLER_DEF(abrt_handler)
 862 {
 863     EXCEPTION_RECORD rec;
 864     CONTEXT context;
 865
 866     save_context( &context, HANDLER_CONTEXT );
 867     rec.ExceptionCode    = EXCEPTION_WINE_ASSERTION;
 868     rec.ExceptionFlags   = EH_NONCONTINUABLE;
 869     rec.ExceptionRecord  = NULL;
 870     rec.ExceptionAddress = (LPVOID)context.Iar;
 871     rec.NumberParameters = 0;
 872     __regs_RtlRaiseException( &rec, &context ); /* Should never return.. */
 873     restore_context( &context, HANDLER_CONTEXT );
 874 }
 875
 876
 877 /**********************************************************************
 878  *              quit_handler
 879  *
 880  * Handler for SIGQUIT.
 881  */
 882 static HANDLER_DEF(quit_handler)
 883 {
 884     abort_thread(0);
 885 }
 886
 887
 888 /**********************************************************************
 889  *              usr1_handler
 890  *
 891  * Handler for SIGUSR1, used to signal a thread that it got suspended.
 892  */
 893 static HANDLER_DEF(usr1_handler)
 894 {
 895     CONTEXT context;
 896
 897     save_context( &context, HANDLER_CONTEXT );
 898     wait_suspend( &context );
 899     restore_context( &context, HANDLER_CONTEXT );
 900 }
 901
 902
 903 /**********************************************************************
 904  *              get_signal_stack_total_size
 905  *
 906  * Retrieve the size to allocate for the signal stack, including the TEB at the bottom.
 907  * Must be a power of two.
 908  */
 909 size_t get_signal_stack_total_size(void)
 910 {
 911     assert( sizeof(TEB) <= getpagesize() );
 912     return getpagesize();  /* this is just for the TEB, we don't need a signal stack */
 913 }
 914
 915
 916 /***********************************************************************
 917  *           set_handler
 918  *
 919  * Set a signal handler
 920  */
 921 static int set_handler( int sig, void (*func)() )
 922 {
 923     struct sigaction sig_act;
 924
 925     sig_act.sa_sigaction = func;
 926     sig_act.sa_mask = server_block_set;
 927     sig_act.sa_flags = SA_RESTART | SA_SIGINFO;
 928     return sigaction( sig, &sig_act, NULL );
 929 }
 930
 931
 932 /***********************************************************************
 933  *           __wine_set_signal_handler   (NTDLL.@)
 934  */
 935 int CDECL __wine_set_signal_handler(unsigned int sig, wine_signal_handler wsh)
 936 {
 937     if (sig > sizeof(handlers) / sizeof(handlers[0])) return -1;
 938     if (handlers[sig] != NULL) return -2;
 939     handlers[sig] = wsh;
 940     return 0;
 941 }
 942
 943
 944 /**********************************************************************
 945  *              signal_init_thread
 946  */
 947 void signal_init_thread( TEB *teb )
 948 {
 949     static int init_done;
 950
 951     if (!init_done)
 952     {
 953         pthread_key_create( &teb_key, NULL );
 954         init_done = 1;
 955     }
 956     pthread_setspecific( teb_key, teb );
 957 }
 958
 959
 960 /**********************************************************************
 961  *              signal_init_process
 962  */
 963 void signal_init_process(void)
 964 {
 965     if (set_handler( SIGINT,  (void (*)())int_handler ) == -1) goto error;
 966     if (set_handler( SIGFPE,  (void (*)())fpe_handler ) == -1) goto error;
 967     if (set_handler( SIGSEGV, (void (*)())segv_handler ) == -1) goto error;
 968     if (set_handler( SIGILL,  (void (*)())segv_handler ) == -1) goto error;
 969     if (set_handler( SIGABRT, (void (*)())abrt_handler ) == -1) goto error;
 970     if (set_handler( SIGQUIT, (void (*)())quit_handler ) == -1) goto error;
 971     if (set_handler( SIGUSR1, (void (*)())usr1_handler ) == -1) goto error;
 972 #ifdef SIGBUS
 973     if (set_handler( SIGBUS,  (void (*)())segv_handler ) == -1) goto error;
 974 #endif
 975 #ifdef SIGTRAP
 976     if (set_handler( SIGTRAP, (void (*)())trap_handler ) == -1) goto error;
 977 #endif
 978     return;
 979
 980  error:
 981     perror("sigaction");
 982     exit(1);
 983 }
 984
 985
 986 /**********************************************************************
 987  *              __wine_enter_vm86   (NTDLL.@)
 988  */
 989 void __wine_enter_vm86( CONTEXT *context )
 990 {
 991     MESSAGE("vm86 mode not supported on this platform\n");
 992 }
 993
 994 /**********************************************************************
 995  *              DbgBreakPoint   (NTDLL.@)
 996  */
 997 void WINAPI DbgBreakPoint(void)
 998 {
 999      kill(getpid(), SIGTRAP);
1000 }
1001
1002 /**********************************************************************
1003  *              DbgUserBreakPoint   (NTDLL.@)
1004  */
1005 void WINAPI DbgUserBreakPoint(void)
1006 {
1007      kill(getpid(), SIGTRAP);
1008 }
1009
1010 /**********************************************************************
1011  *           NtCurrentTeb   (NTDLL.@)
1012  */
1013 TEB * WINAPI NtCurrentTeb(void)
1014 {
1015     return pthread_getspecific( teb_key );
1016 }
1017
1018 #endif  /* __powerpc__ */