sim/m32r/traps-linux.c

   1 /* m32r exception, interrupt, and trap (EIT) support
   2    Copyright (C) 1998, 2003 Free Software Foundation, Inc.
   3    Contributed by Renesas.
   4
   5    This file is part of GDB, the GNU debugger.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2, or (at your option)
  10    any later version.
  11
  12    This program 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
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License along
  18    with this program; if not, write to the Free Software Foundation, Inc.,
  19    59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #include "sim-main.h"
  22 #include "syscall.h"
  23 #include "targ-vals.h"
  24 #include <dirent.h>
  25 #include <errno.h>
  26 #include <fcntl.h>
  27 #include <time.h>
  28 #include <unistd.h>
  29 #include <utime.h>
  30 #include <sys/mman.h>
  31 #include <sys/poll.h>
  32 #include <sys/resource.h>
  33 #include <sys/sysinfo.h>
  34 #include <sys/stat.h>
  35 #include <sys/time.h>
  36 #include <sys/timeb.h>
  37 #include <sys/timex.h>
  38 #include <sys/types.h>
  39 #include <sys/uio.h>
  40 #include <sys/utsname.h>
  41 #include <sys/vfs.h>
  42 #include <linux/module.h>
  43 #include <linux/sysctl.h>
  44 #include <linux/types.h>
  45 #include <linux/unistd.h>
  46
  47 #define TRAP_ELF_SYSCALL 0
  48 #define TRAP_LINUX_SYSCALL 2
  49 #define TRAP_FLUSH_CACHE 12
  50
  51 /* The semantic code invokes this for invalid (unrecognized) instructions.  */
  52
  53 SEM_PC
  54 sim_engine_invalid_insn (SIM_CPU *current_cpu, IADDR cia, SEM_PC vpc)
  55 {
  56   SIM_DESC sd = CPU_STATE (current_cpu);
  57
  58 #if 0
  59   if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)
  60     {
  61       h_bsm_set (current_cpu, h_sm_get (current_cpu));
  62       h_bie_set (current_cpu, h_ie_get (current_cpu));
  63       h_bcond_set (current_cpu, h_cond_get (current_cpu));
  64       /* sm not changed */
  65       h_ie_set (current_cpu, 0);
  66       h_cond_set (current_cpu, 0);
  67
  68       h_bpc_set (current_cpu, cia);
  69
  70       sim_engine_restart (CPU_STATE (current_cpu), current_cpu, NULL,
  71                           EIT_RSVD_INSN_ADDR);
  72     }
  73   else
  74 #endif
  75     sim_engine_halt (sd, current_cpu, NULL, cia, sim_stopped, SIM_SIGILL);
  76   return vpc;
  77 }
  78
  79 /* Process an address exception.  */
  80
  81 void
  82 m32r_core_signal (SIM_DESC sd, SIM_CPU *current_cpu, sim_cia cia,
  83                   unsigned int map, int nr_bytes, address_word addr,
  84                   transfer_type transfer, sim_core_signals sig)
  85 {
  86   if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)
  87     {
  88       m32rbf_h_cr_set (current_cpu, H_CR_BBPC,
  89                        m32rbf_h_cr_get (current_cpu, H_CR_BPC));
  90       if (MACH_NUM (CPU_MACH (current_cpu)) == MACH_M32R)
  91         {
  92           m32rbf_h_bpsw_set (current_cpu, m32rbf_h_psw_get (current_cpu));
  93           /* sm not changed */
  94           m32rbf_h_psw_set (current_cpu, m32rbf_h_psw_get (current_cpu) & 0x80);
  95         }
  96       else if (MACH_NUM (CPU_MACH (current_cpu)) == MACH_M32RX)
  97         {
  98           m32rxf_h_bpsw_set (current_cpu, m32rxf_h_psw_get (current_cpu));
  99           /* sm not changed */
 100           m32rxf_h_psw_set (current_cpu, m32rxf_h_psw_get (current_cpu) & 0x80);
 101         }
 102       else
 103         {
 104           m32r2f_h_bpsw_set (current_cpu, m32r2f_h_psw_get (current_cpu));
 105           /* sm not changed */
 106           m32r2f_h_psw_set (current_cpu, m32r2f_h_psw_get (current_cpu) & 0x80);
 107         }
 108       m32rbf_h_cr_set (current_cpu, H_CR_BPC, cia);
 109
 110       sim_engine_restart (CPU_STATE (current_cpu), current_cpu, NULL,
 111                           EIT_ADDR_EXCP_ADDR);
 112     }
 113   else
 114     sim_core_signal (sd, current_cpu, cia, map, nr_bytes, addr,
 115                      transfer, sig);
 116 }
 117 \f
 118 /* Read/write functions for system call interface.  */
 119
 120 static int
 121 syscall_read_mem (host_callback *cb, struct cb_syscall *sc,
 122                   unsigned long taddr, char *buf, int bytes)
 123 {
 124   SIM_DESC sd = (SIM_DESC) sc->p1;
 125   SIM_CPU *cpu = (SIM_CPU *) sc->p2;
 126
 127   return sim_core_read_buffer (sd, cpu, read_map, buf, taddr, bytes);
 128 }
 129
 130 static int
 131 syscall_write_mem (host_callback *cb, struct cb_syscall *sc,
 132                    unsigned long taddr, const char *buf, int bytes)
 133 {
 134   SIM_DESC sd = (SIM_DESC) sc->p1;
 135   SIM_CPU *cpu = (SIM_CPU *) sc->p2;
 136
 137   return sim_core_write_buffer (sd, cpu, write_map, buf, taddr, bytes);
 138 }
 139
 140 /* Translate target's address to host's address.  */
 141
 142 static void *
 143 t2h_addr (host_callback *cb, struct cb_syscall *sc,
 144           unsigned long taddr)
 145 {
 146   extern sim_core_trans_addr (SIM_DESC, sim_cpu *, unsigned, address_word);
 147   void *addr;
 148   SIM_DESC sd = (SIM_DESC) sc->p1;
 149   SIM_CPU *cpu = (SIM_CPU *) sc->p2;
 150
 151   if (taddr == 0)
 152     return NULL;
 153
 154   return sim_core_trans_addr (sd, cpu, read_map, taddr);
 155 }
 156
 157 static unsigned int
 158 conv_endian (unsigned int tvalue)
 159 {
 160   unsigned int hvalue;
 161   unsigned int t1, t2, t3, t4;
 162
 163   if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN)
 164     {
 165       t1 = tvalue & 0xff000000;
 166       t2 = tvalue & 0x00ff0000;
 167       t3 = tvalue & 0x0000ff00;
 168       t4 = tvalue & 0x000000ff;
 169
 170       hvalue =  t1 >> 24;
 171       hvalue += t2 >> 8;
 172       hvalue += t3 << 8;
 173       hvalue += t4 << 24;
 174     }
 175   else
 176     hvalue = tvalue;
 177
 178   return hvalue;
 179 }
 180
 181 static unsigned short
 182 conv_endian16 (unsigned short tvalue)
 183 {
 184   unsigned short hvalue;
 185   unsigned short t1, t2;
 186
 187   if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN)
 188     {
 189       t1 = tvalue & 0xff00;
 190       t2 = tvalue & 0x00ff;
 191
 192       hvalue =  t1 >> 8;
 193       hvalue += t2 << 8;
 194     }
 195   else
 196     hvalue = tvalue;
 197
 198   return hvalue;
 199 }
 200
 201 static void
 202 translate_endian(void *addr, size_t size)
 203 {
 204   unsigned int *p = (unsigned int *) addr;
 205   int i;
 206
 207   for (i = 0; i <= size - 4; i += 4,p++)
 208     *p = conv_endian(*p);
 209
 210   if (i <= size - 2)
 211     *((unsigned short *) p) = conv_endian16(*((unsigned short *) p));
 212 }
 213
 214 /* Trap support.
 215    The result is the pc address to continue at.
 216    Preprocessing like saving the various registers has already been done.  */
 217
 218 USI
 219 m32r_trap (SIM_CPU *current_cpu, PCADDR pc, int num)
 220 {
 221   SIM_DESC sd = CPU_STATE (current_cpu);
 222   host_callback *cb = STATE_CALLBACK (sd);
 223
 224 #ifdef SIM_HAVE_BREAKPOINTS
 225   /* Check for breakpoints "owned" by the simulator first, regardless
 226      of --environment.  */
 227   if (num == TRAP_BREAKPOINT)
 228     {
 229       /* First try sim-break.c.  If it's a breakpoint the simulator "owns"
 230          it doesn't return.  Otherwise it returns and let's us try.  */
 231       sim_handle_breakpoint (sd, current_cpu, pc);
 232       /* Fall through.  */
 233     }
 234 #endif
 235
 236   switch (num)
 237     {
 238     case TRAP_ELF_SYSCALL :
 239       {
 240         CB_SYSCALL s;
 241
 242         CB_SYSCALL_INIT (&s);
 243         s.func = m32rbf_h_gr_get (current_cpu, 0);
 244         s.arg1 = m32rbf_h_gr_get (current_cpu, 1);
 245         s.arg2 = m32rbf_h_gr_get (current_cpu, 2);
 246         s.arg3 = m32rbf_h_gr_get (current_cpu, 3);
 247
 248         if (s.func == TARGET_SYS_exit)
 249           {
 250             sim_engine_halt (sd, current_cpu, NULL, pc, sim_exited, s.arg1);
 251           }
 252
 253         s.p1 = (PTR) sd;
 254         s.p2 = (PTR) current_cpu;
 255         s.read_mem = syscall_read_mem;
 256         s.write_mem = syscall_write_mem;
 257         cb_syscall (cb, &s);
 258         m32rbf_h_gr_set (current_cpu, 2, s.errcode);
 259         m32rbf_h_gr_set (current_cpu, 0, s.result);
 260         m32rbf_h_gr_set (current_cpu, 1, s.result2);
 261         break;
 262       }
 263
 264     case TRAP_LINUX_SYSCALL :
 265       {
 266         CB_SYSCALL s;
 267         unsigned int func, arg1, arg2, arg3, arg4, arg5, arg6, arg7;
 268         int result, result2, errcode;
 269
 270         if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)
 271           {
 272             /* The new pc is the trap vector entry.
 273                We assume there's a branch there to some handler.
 274                Use cr5 as EVB (EIT Vector Base) register.  */
 275             USI new_pc = m32rbf_h_cr_get (current_cpu, 5) + 0x40 + num * 4;
 276             return new_pc;
 277           }
 278
 279         func = m32rbf_h_gr_get (current_cpu, 7);
 280         arg1 = m32rbf_h_gr_get (current_cpu, 0);
 281         arg2 = m32rbf_h_gr_get (current_cpu, 1);
 282         arg3 = m32rbf_h_gr_get (current_cpu, 2);
 283         arg4 = m32rbf_h_gr_get (current_cpu, 3);
 284         arg5 = m32rbf_h_gr_get (current_cpu, 4);
 285         arg6 = m32rbf_h_gr_get (current_cpu, 5);
 286         arg7 = m32rbf_h_gr_get (current_cpu, 6);
 287
 288         CB_SYSCALL_INIT (&s);
 289         s.func = func;
 290         s.arg1 = arg1;
 291         s.arg2 = arg2;
 292         s.arg3 = arg3;
 293
 294         s.p1 = (PTR) sd;
 295         s.p2 = (PTR) current_cpu;
 296         s.read_mem = syscall_read_mem;
 297         s.write_mem = syscall_write_mem;
 298
 299         result = 0;
 300         result2 = 0;
 301         errcode = 0;
 302
 303         switch (func)
 304           {
 305           case __NR_exit:
 306             sim_engine_halt (sd, current_cpu, NULL, pc, sim_exited, arg1);
 307             break;
 308
 309           case __NR_read:
 310             result = read(arg1, t2h_addr(cb, &s, arg2), arg3);
 311             errcode = errno;
 312             break;
 313
 314           case __NR_write:
 315             result = write(arg1, t2h_addr(cb, &s, arg2), arg3);
 316             errcode = errno;
 317             break;
 318
 319           case __NR_open:
 320             result = open((char *) t2h_addr(cb, &s, arg1), arg2, arg3);
 321             errcode = errno;
 322             break;
 323
 324           case __NR_close:
 325             result = close(arg1);
 326             errcode = errno;
 327             break;
 328
 329           case __NR_creat:
 330             result = creat((char *) t2h_addr(cb, &s, arg1), arg2);
 331             errcode = errno;
 332             break;
 333
 334           case __NR_link:
 335             result = link((char *) t2h_addr(cb, &s, arg1),
 336                           (char *) t2h_addr(cb, &s, arg2));
 337             errcode = errno;
 338             break;
 339
 340           case __NR_unlink:
 341             result = unlink((char *) t2h_addr(cb, &s, arg1));
 342             errcode = errno;
 343             break;
 344
 345           case __NR_chdir:
 346             result = chdir((char *) t2h_addr(cb, &s, arg1));
 347             errcode = errno;
 348             break;
 349
 350           case __NR_time:
 351             {
 352               time_t t;
 353
 354               if (arg1 == 0)
 355                 {
 356                   result = (int) time(NULL);
 357                   errcode = errno;
 358                 }
 359               else
 360                 {
 361                   result = (int) time(&t);
 362                   errcode = errno;
 363
 364                   if (result != 0)
 365                     break;
 366
 367                   translate_endian((void *) &t, sizeof(t));
 368                   if ((s.write_mem) (cb, &s, arg1, (char *) &t, sizeof(t)) != sizeof(t))
 369                     {
 370                       result = -1;
 371                       errcode = EINVAL;
 372                     }
 373                 }
 374             }
 375             break;
 376
 377           case __NR_mknod:
 378             result = mknod((char *) t2h_addr(cb, &s, arg1),
 379                            (mode_t) arg2, (dev_t) arg3);
 380             errcode = errno;
 381             break;
 382
 383           case __NR_chmod:
 384             result = chmod((char *) t2h_addr(cb, &s, arg1), (mode_t) arg2);
 385             errcode = errno;
 386             break;
 387
 388           case __NR_lchown:
 389             result = lchown((char *) t2h_addr(cb, &s, arg1),
 390                             (uid_t) arg2, (gid_t) arg3);
 391             errcode = errno;
 392             break;
 393
 394           case __NR_lseek:
 395             result = (int) lseek(arg1, (off_t) arg2, arg3);
 396             errcode = errno;
 397             break;
 398
 399           case __NR_getpid:
 400             result = getpid();
 401             errcode = errno;
 402             break;
 403
 404           case __NR_getuid:
 405             result = getuid();
 406             errcode = errno;
 407             break;
 408
 409           case __NR_utime:
 410             {
 411               struct utimbuf buf;
 412
 413               if (arg2 == 0)
 414                 {
 415                   result = utime((char *) t2h_addr(cb, &s, arg1), NULL);
 416                   errcode = errno;
 417                 }
 418               else
 419                 {
 420                   buf = *((struct utimbuf *) t2h_addr(cb, &s, arg2));
 421                   translate_endian((void *) &buf, sizeof(buf));
 422                   result = utime((char *) t2h_addr(cb, &s, arg1), &buf);
 423                   errcode = errno;
 424                 }
 425             }
 426             break;
 427
 428           case __NR_access:
 429             result = access((char *) t2h_addr(cb, &s, arg1), arg2);
 430             errcode = errno;
 431             break;
 432
 433           case __NR_ftime:
 434             {
 435               struct timeb t;
 436
 437               result = ftime(&t);
 438               errcode = errno;
 439
 440               if (result != 0)
 441                 break;
 442
 443               t.time = conv_endian(t.time);
 444               t.millitm = conv_endian16(t.millitm);
 445               t.timezone = conv_endian16(t.timezone);
 446               t.dstflag = conv_endian16(t.dstflag);
 447               if ((s.write_mem) (cb, &s, arg1, (char *) &t, sizeof(t))
 448                   != sizeof(t))
 449                 {
 450                   result = -1;
 451                   errcode = EINVAL;
 452                 }
 453             }
 454
 455           case __NR_sync:
 456             sync();
 457             result = 0;
 458             break;
 459
 460           case __NR_rename:
 461             result = rename((char *) t2h_addr(cb, &s, arg1),
 462                             (char *) t2h_addr(cb, &s, arg2));
 463             errcode = errno;
 464             break;
 465
 466           case __NR_mkdir:
 467             result = mkdir((char *) t2h_addr(cb, &s, arg1), arg2);
 468             errcode = errno;
 469             break;
 470
 471           case __NR_rmdir:
 472             result = rmdir((char *) t2h_addr(cb, &s, arg1));
 473             errcode = errno;
 474             break;
 475
 476           case __NR_dup:
 477             result = dup(arg1);
 478             errcode = errno;
 479             break;
 480
 481           case __NR_brk:
 482             result = brk((void *) arg1);
 483             errcode = errno;
 484             //result = arg1;
 485             break;
 486
 487           case __NR_getgid:
 488             result = getgid();
 489             errcode = errno;
 490             break;
 491
 492           case __NR_geteuid:
 493             result = geteuid();
 494             errcode = errno;
 495             break;
 496
 497           case __NR_getegid:
 498             result = getegid();
 499             errcode = errno;
 500             break;
 501
 502           case __NR_ioctl:
 503             result = ioctl(arg1, arg2, arg3);
 504             errcode = errno;
 505             break;
 506
 507           case __NR_fcntl:
 508             result = fcntl(arg1, arg2, arg3);
 509             errcode = errno;
 510             break;
 511
 512           case __NR_ustat:
 513             {
 514               struct ustat ubuf;
 515
 516               result = ustat(arg1, &ubuf);
 517               errcode = errno;
 518
 519               if (result != 0)
 520                 break;
 521
 522               ubuf.f_tfree = conv_endian(ubuf.f_tfree);
 523               ubuf.f_tinode = conv_endian(ubuf.f_tinode);
 524               if ((s.write_mem) (cb, &s, arg2, (char *) &ubuf, sizeof(ubuf))
 525                   != sizeof(ubuf))
 526                 {
 527                   result = -1;
 528                   errcode = EINVAL;
 529                 }
 530             }
 531             break;
 532
 533           case __NR_dup2:
 534             result = dup2(arg1, arg2);
 535             errcode = errno;
 536             break;
 537
 538           case __NR_getppid:
 539             result = getppid();
 540             errcode = errno;
 541             break;
 542
 543           case __NR_getpgrp:
 544             result = getpgrp();
 545             errcode = errno;
 546             break;
 547
 548           case __NR_getrlimit:
 549             {
 550               struct rlimit rlim;
 551
 552               result = getrlimit(arg1, &rlim);
 553               errcode = errno;
 554
 555               if (result != 0)
 556                 break;
 557
 558               translate_endian((void *) &rlim, sizeof(rlim));
 559               if ((s.write_mem) (cb, &s, arg2, (char *) &rlim, sizeof(rlim))
 560                   != sizeof(rlim))
 561                 {
 562                   result = -1;
 563                   errcode = EINVAL;
 564                 }
 565             }
 566             break;
 567
 568           case __NR_getrusage:
 569             {
 570               struct rusage usage;
 571
 572               result = getrusage(arg1, &usage);
 573               errcode = errno;
 574
 575               if (result != 0)
 576                 break;
 577
 578               translate_endian((void *) &usage, sizeof(usage));
 579               if ((s.write_mem) (cb, &s, arg2, (char *) &usage, sizeof(usage))
 580                   != sizeof(usage))
 581                 {
 582                   result = -1;
 583                   errcode = EINVAL;
 584                 }
 585             }
 586             break;
 587
 588           case __NR_gettimeofday:
 589             {
 590               struct timeval tv;
 591               struct timezone tz;
 592
 593               result = gettimeofday(&tv, &tz);
 594               errcode = errno;
 595
 596               if (result != 0)
 597                 break;
 598
 599               translate_endian((void *) &tv, sizeof(tv));
 600               if ((s.write_mem) (cb, &s, arg1, (char *) &tv, sizeof(tv))
 601                   != sizeof(tv))
 602                 {
 603                   result = -1;
 604                   errcode = EINVAL;
 605                 }
 606
 607               translate_endian((void *) &tz, sizeof(tz));
 608               if ((s.write_mem) (cb, &s, arg2, (char *) &tz, sizeof(tz))
 609                   != sizeof(tz))
 610                 {
 611                   result = -1;
 612                   errcode = EINVAL;
 613                 }
 614             }
 615             break;
 616
 617           case __NR_getgroups:
 618             {
 619               gid_t *list;
 620
 621               if (arg1 > 0)
 622                 list = (gid_t *) malloc(arg1 * sizeof(gid_t));
 623
 624               result = getgroups(arg1, list);
 625               errcode = errno;
 626
 627               if (result != 0)
 628                 break;
 629
 630               translate_endian((void *) list, arg1 * sizeof(gid_t));
 631               if (arg1 > 0)
 632                 if ((s.write_mem) (cb, &s, arg2, (char *) list, arg1 * sizeof(gid_t))
 633                     != arg1 * sizeof(gid_t))
 634                   {
 635                     result = -1;
 636                      errcode = EINVAL;
 637                   }
 638             }
 639             break;
 640
 641           case __NR_select:
 642             {
 643               int n;
 644               fd_set readfds;
 645               fd_set *treadfdsp;
 646               fd_set *hreadfdsp;
 647               fd_set writefds;
 648               fd_set *twritefdsp;
 649               fd_set *hwritefdsp;
 650               fd_set exceptfds;
 651               fd_set *texceptfdsp;
 652               fd_set *hexceptfdsp;
 653               struct timeval *ttimeoutp;
 654               struct timeval timeout;
 655
 656               n = arg1;
 657
 658               treadfdsp = (fd_set *) arg2;
 659               if (treadfdsp != NULL)
 660                 {
 661                   readfds = *((fd_set *) t2h_addr(cb, &s, (unsigned int) treadfdsp));
 662                   translate_endian((void *) &readfds, sizeof(readfds));
 663                   hreadfdsp = &readfds;
 664                 }
 665               else
 666                 hreadfdsp = NULL;
 667
 668               twritefdsp  = (fd_set *) arg3;
 669               if (twritefdsp != NULL)
 670                 {
 671                   writefds = *((fd_set *) t2h_addr(cb, &s, (unsigned int) twritefdsp));
 672                   translate_endian((void *) &writefds, sizeof(writefds));
 673                   hwritefdsp = &writefds;
 674                 }
 675               else
 676                 hwritefdsp = NULL;
 677
 678               texceptfdsp = (fd_set *) arg4;
 679               if (texceptfdsp != NULL)
 680                 {
 681                   exceptfds = *((fd_set *) t2h_addr(cb, &s, (unsigned int) texceptfdsp));
 682                   translate_endian((void *) &exceptfds, sizeof(exceptfds));
 683                   hexceptfdsp = &exceptfds;
 684                 }
 685               else
 686                 hexceptfdsp = NULL;
 687
 688               ttimeoutp = (struct timeval *) arg5;
 689               timeout = *((struct timeval *) t2h_addr(cb, &s, (unsigned int) ttimeoutp));
 690               translate_endian((void *) &timeout, sizeof(timeout));
 691
 692               result = select(n, hreadfdsp, hwritefdsp, hexceptfdsp, &timeout);
 693               errcode = errno;
 694
 695               if (result != 0)
 696                 break;
 697
 698               if (treadfdsp != NULL)
 699                 {
 700                   translate_endian((void *) &readfds, sizeof(readfds));
 701                   if ((s.write_mem) (cb, &s, (unsigned long) treadfdsp,
 702                        (char *) &readfds, sizeof(readfds)) != sizeof(readfds))
 703                     {
 704                       result = -1;
 705                       errcode = EINVAL;
 706                     }
 707                 }
 708
 709               if (twritefdsp != NULL)
 710                 {
 711                   translate_endian((void *) &writefds, sizeof(writefds));
 712                   if ((s.write_mem) (cb, &s, (unsigned long) twritefdsp,
 713                        (char *) &writefds, sizeof(writefds)) != sizeof(writefds))
 714                     {
 715                       result = -1;
 716                       errcode = EINVAL;
 717                     }
 718                 }
 719
 720               if (texceptfdsp != NULL)
 721                 {
 722                   translate_endian((void *) &exceptfds, sizeof(exceptfds));
 723                   if ((s.write_mem) (cb, &s, (unsigned long) texceptfdsp,
 724                        (char *) &exceptfds, sizeof(exceptfds)) != sizeof(exceptfds))
 725                     {
 726                       result = -1;
 727                       errcode = EINVAL;
 728                     }
 729                 }
 730
 731               translate_endian((void *) &timeout, sizeof(timeout));
 732               if ((s.write_mem) (cb, &s, (unsigned long) ttimeoutp,
 733                    (char *) &timeout, sizeof(timeout)) != sizeof(timeout))
 734                 {
 735                   result = -1;
 736                   errcode = EINVAL;
 737                 }
 738             }
 739             break;
 740
 741           case __NR_symlink:
 742             result = symlink((char *) t2h_addr(cb, &s, arg1),
 743                              (char *) t2h_addr(cb, &s, arg2));
 744             errcode = errno;
 745             break;
 746
 747           case __NR_readlink:
 748             result = readlink((char *) t2h_addr(cb, &s, arg1),
 749                               (char *) t2h_addr(cb, &s, arg2),
 750                               arg3);
 751             errcode = errno;
 752             break;
 753
 754           case __NR_readdir:
 755             result = (int) readdir((DIR *) t2h_addr(cb, &s, arg1));
 756             errcode = errno;
 757             break;
 758
 759 #if 0
 760           case __NR_mmap:
 761             {
 762               result = (int) mmap((void *) t2h_addr(cb, &s, arg1),
 763                                   arg2, arg3, arg4, arg5, arg6);
 764               errcode = errno;
 765
 766               if (errno == 0)
 767                 {
 768                   sim_core_attach (sd, NULL,
 769                                    0, access_read_write_exec, 0,
 770                                    result, arg2, 0, NULL, NULL);
 771                 }
 772             }
 773             break;
 774 #endif
 775           case __NR_mmap:
 776             {
 777               void *addr;
 778               size_t len;
 779               int prot, flags, fildes;
 780               off_t off;
 781
 782               addr   = *((void **)  t2h_addr(cb, &s, arg1));
 783               len    = *((size_t *) t2h_addr(cb, &s, arg1 + 4));
 784               prot   = *((int *)    t2h_addr(cb, &s, arg1 + 8));
 785               flags  = *((int *)    t2h_addr(cb, &s, arg1 + 12));
 786               fildes = *((int *)    t2h_addr(cb, &s, arg1 + 16));
 787               off    = *((off_t *)  t2h_addr(cb, &s, arg1 + 20));
 788
 789               addr   = (void *) conv_endian((unsigned int) addr);
 790               len    = conv_endian(len);
 791               prot   = conv_endian(prot);
 792               flags  = conv_endian(flags);
 793               fildes = conv_endian(fildes);
 794               off    = conv_endian(off);
 795
 796               //addr   = (void *) t2h_addr(cb, &s, (unsigned int) addr);
 797               result = (int) mmap(addr, len, prot, flags, fildes, off);
 798               errcode = errno;
 799
 800               //if (errno == 0)
 801               if (result != -1)
 802                 {
 803                   char c;
 804                   if (sim_core_read_buffer (sd, NULL, read_map, &c, result, 1) == 0)
 805                     sim_core_attach (sd, NULL,
 806                                      0, access_read_write_exec, 0,
 807                                      result, len, 0, NULL, NULL);
 808                 }
 809             }
 810             break;
 811
 812           case __NR_munmap:
 813             {
 814             result = munmap((void *)arg1, arg2);
 815             errcode = errno;
 816             if (result != -1)
 817               {
 818                 sim_core_detach (sd, NULL, 0, arg2, result);
 819               }
 820             }
 821             break;
 822
 823           case __NR_truncate:
 824             result = truncate((char *) t2h_addr(cb, &s, arg1), arg2);
 825             errcode = errno;
 826             break;
 827
 828           case __NR_ftruncate:
 829             result = ftruncate(arg1, arg2);
 830             errcode = errno;
 831             break;
 832
 833           case __NR_fchmod:
 834             result = fchmod(arg1, arg2);
 835             errcode = errno;
 836             break;
 837
 838           case __NR_fchown:
 839             result = fchown(arg1, arg2, arg3);
 840             errcode = errno;
 841             break;
 842
 843           case __NR_statfs:
 844             {
 845               struct statfs statbuf;
 846
 847               result = statfs((char *) t2h_addr(cb, &s, arg1), &statbuf);
 848               errcode = errno;
 849
 850               if (result != 0)
 851                 break;
 852
 853               translate_endian((void *) &statbuf, sizeof(statbuf));
 854               if ((s.write_mem) (cb, &s, arg2, (char *) &statbuf, sizeof(statbuf))
 855                   != sizeof(statbuf))
 856                 {
 857                   result = -1;
 858                   errcode = EINVAL;
 859                 }
 860             }
 861             break;
 862
 863           case __NR_fstatfs:
 864             {
 865               struct statfs statbuf;
 866
 867               result = fstatfs(arg1, &statbuf);
 868               errcode = errno;
 869
 870               if (result != 0)
 871                 break;
 872
 873               translate_endian((void *) &statbuf, sizeof(statbuf));
 874               if ((s.write_mem) (cb, &s, arg2, (char *) &statbuf, sizeof(statbuf))
 875                   != sizeof(statbuf))
 876                 {
 877                   result = -1;
 878                   errcode = EINVAL;
 879                 }
 880             }
 881             break;
 882
 883           case __NR_syslog:
 884             result = syslog(arg1, (char *) t2h_addr(cb, &s, arg2));
 885             errcode = errno;
 886             break;
 887
 888           case __NR_setitimer:
 889             {
 890               struct itimerval value, ovalue;
 891
 892               value = *((struct itimerval *) t2h_addr(cb, &s, arg2));
 893               translate_endian((void *) &value, sizeof(value));
 894
 895               if (arg2 == 0)
 896                 {
 897                   result = setitimer(arg1, &value, NULL);
 898                   errcode = errno;
 899                 }
 900               else
 901                 {
 902                   result = setitimer(arg1, &value, &ovalue);
 903                   errcode = errno;
 904
 905                   if (result != 0)
 906                     break;
 907
 908                   translate_endian((void *) &ovalue, sizeof(ovalue));
 909                   if ((s.write_mem) (cb, &s, arg3, (char *) &ovalue, sizeof(ovalue))
 910                       != sizeof(ovalue))
 911                     {
 912                       result = -1;
 913                       errcode = EINVAL;
 914                     }
 915                 }
 916             }
 917             break;
 918
 919           case __NR_getitimer:
 920             {
 921               struct itimerval value;
 922
 923               result = getitimer(arg1, &value);
 924               errcode = errno;
 925
 926               if (result != 0)
 927                 break;
 928
 929               translate_endian((void *) &value, sizeof(value));
 930               if ((s.write_mem) (cb, &s, arg2, (char *) &value, sizeof(value))
 931                   != sizeof(value))
 932                 {
 933                   result = -1;
 934                   errcode = EINVAL;
 935                 }
 936             }
 937             break;
 938
 939           case __NR_stat:
 940             {
 941               char *buf;
 942               int buflen;
 943               struct stat statbuf;
 944
 945               result = stat((char *) t2h_addr(cb, &s, arg1), &statbuf);
 946               errcode = errno;
 947               if (result < 0)
 948                 break;
 949
 950               buflen = cb_host_to_target_stat (cb, NULL, NULL);
 951               buf = xmalloc (buflen);
 952               if (cb_host_to_target_stat (cb, &statbuf, buf) != buflen)
 953                 {
 954                   /* The translation failed.  This is due to an internal
 955                      host program error, not the target's fault.  */
 956                   free (buf);
 957                   result = -1;
 958                   errcode = ENOSYS;
 959                   break;
 960                 }
 961               if ((s.write_mem) (cb, &s, arg2, buf, buflen) != buflen)
 962                 {
 963                   free (buf);
 964                   result = -1;
 965                   errcode = EINVAL;
 966                   break;
 967                 }
 968               free (buf);
 969             }
 970             break;
 971
 972           case __NR_lstat:
 973             {
 974               char *buf;
 975               int buflen;
 976               struct stat statbuf;
 977
 978               result = lstat((char *) t2h_addr(cb, &s, arg1), &statbuf);
 979               errcode = errno;
 980               if (result < 0)
 981                 break;
 982
 983               buflen = cb_host_to_target_stat (cb, NULL, NULL);
 984               buf = xmalloc (buflen);
 985               if (cb_host_to_target_stat (cb, &statbuf, buf) != buflen)
 986                 {
 987                   /* The translation failed.  This is due to an internal
 988                      host program error, not the target's fault.  */
 989                   free (buf);
 990                   result = -1;
 991                   errcode = ENOSYS;
 992                   break;
 993                 }
 994               if ((s.write_mem) (cb, &s, arg2, buf, buflen) != buflen)
 995                 {
 996                   free (buf);
 997                   result = -1;
 998                   errcode = EINVAL;
 999                   break;
1000                 }
1001               free (buf);
1002             }
1003             break;
1004
1005           case __NR_fstat:
1006             {
1007               char *buf;
1008               int buflen;
1009               struct stat statbuf;
1010
1011               result = fstat(arg1, &statbuf);
1012               errcode = errno;
1013               if (result < 0)
1014                 break;
1015
1016               buflen = cb_host_to_target_stat (cb, NULL, NULL);
1017               buf = xmalloc (buflen);
1018               if (cb_host_to_target_stat (cb, &statbuf, buf) != buflen)
1019                 {
1020                   /* The translation failed.  This is due to an internal
1021                      host program error, not the target's fault.  */
1022                   free (buf);
1023                   result = -1;
1024                   errcode = ENOSYS;
1025                   break;
1026                 }
1027               if ((s.write_mem) (cb, &s, arg2, buf, buflen) != buflen)
1028                 {
1029                   free (buf);
1030                   result = -1;
1031                   errcode = EINVAL;
1032                   break;
1033                 }
1034               free (buf);
1035             }
1036             break;
1037
1038           case __NR_sysinfo:
1039             {
1040               struct sysinfo info;
1041
1042               result = sysinfo(&info);
1043               errcode = errno;
1044
1045               if (result != 0)
1046                 break;
1047
1048               info.uptime    = conv_endian(info.uptime);
1049               info.loads[0]  = conv_endian(info.loads[0]);
1050               info.loads[1]  = conv_endian(info.loads[1]);
1051               info.loads[2]  = conv_endian(info.loads[2]);
1052               info.totalram  = conv_endian(info.totalram);
1053               info.freeram   = conv_endian(info.freeram);
1054               info.sharedram = conv_endian(info.sharedram);
1055               info.bufferram = conv_endian(info.bufferram);
1056               info.totalswap = conv_endian(info.totalswap);
1057               info.freeswap  = conv_endian(info.freeswap);
1058               info.procs     = conv_endian16(info.procs);
1059 #if LINUX_VERSION_CODE >= 0x20400
1060               info.totalhigh = conv_endian(info.totalhigh);
1061               info.freehigh  = conv_endian(info.freehigh);
1062               info.mem_unit  = conv_endian(info.mem_unit);
1063 #endif
1064               if ((s.write_mem) (cb, &s, arg1, (char *) &info, sizeof(info))
1065                   != sizeof(info))
1066                 {
1067                   result = -1;
1068                   errcode = EINVAL;
1069                 }
1070             }
1071             break;
1072
1073 #if 0
1074           case __NR_ipc:
1075             {
1076               result = ipc(arg1, arg2, arg3, arg4,
1077                            (void *) t2h_addr(cb, &s, arg5), arg6);
1078               errcode = errno;
1079             }
1080             break;
1081 #endif
1082
1083           case __NR_fsync:
1084             result = fsync(arg1);
1085             errcode = errno;
1086             break;
1087
1088           case __NR_uname:
1089             /* utsname contains only arrays of char, so it is not necessary
1090                to translate endian. */
1091             result = uname((struct utsname *) t2h_addr(cb, &s, arg1));
1092             errcode = errno;
1093             break;
1094
1095           case __NR_adjtimex:
1096             {
1097               struct timex buf;
1098
1099               result = adjtimex(&buf);
1100               errcode = errno;
1101
1102               if (result != 0)
1103                 break;
1104
1105               translate_endian((void *) &buf, sizeof(buf));
1106               if ((s.write_mem) (cb, &s, arg1, (char *) &buf, sizeof(buf))
1107                   != sizeof(buf))
1108                 {
1109                   result = -1;
1110                   errcode = EINVAL;
1111                 }
1112             }
1113             break;
1114
1115           case __NR_mprotect:
1116             result = mprotect((void *) arg1, arg2, arg3);
1117             errcode = errno;
1118             break;
1119
1120           case __NR_get_kernel_syms:
1121             {
1122               struct kernel_sym table;
1123
1124               result = get_kernel_syms(&table);
1125               errcode = errno;
1126
1127               if (result != 0)
1128                 break;
1129
1130               table.value = conv_endian(table.value);
1131               if ((s.write_mem) (cb, &s, arg1, (char *) &table, sizeof(table))
1132                   != sizeof(table))
1133                 {
1134                   result = -1;
1135                   errcode = EINVAL;
1136                 }
1137             }
1138             break;
1139
1140           case __NR_fchdir:
1141             result = fchdir(arg1);
1142             errcode = errno;
1143             break;
1144
1145           case __NR_setfsuid:
1146             result = setfsuid(arg1);
1147             errcode = errno;
1148             break;
1149
1150           case __NR_setfsgid:
1151             result = setfsgid(arg1);
1152             errcode = errno;
1153             break;
1154
1155 #if 0
1156           case __NR__llseek:
1157             {
1158               loff_t buf;
1159
1160               result = _llseek(arg1, arg2, arg3, &buf, arg5);
1161               errcode = errno;
1162
1163               if (result != 0)
1164                 break;
1165
1166               translate_endian((void *) &buf, sizeof(buf));
1167               if ((s.write_mem) (cb, &s, t2h_addr(cb, &s, arg4),
1168                                  (char *) &buf, sizeof(buf)) != sizeof(buf))
1169                 {
1170                   result = -1;
1171                   errcode = EINVAL;
1172                 }
1173             }
1174             break;
1175
1176           case __NR_getdents:
1177             {
1178               struct dirent dir;
1179
1180               result = getdents(arg1, &dir, arg3);
1181               errcode = errno;
1182
1183               if (result != 0)
1184                 break;
1185
1186               dir.d_ino = conv_endian(dir.d_ino);
1187               dir.d_off = conv_endian(dir.d_off);
1188               dir.d_reclen = conv_endian16(dir.d_reclen);
1189               if ((s.write_mem) (cb, &s, arg2, (char *) &dir, sizeof(dir))
1190                   != sizeof(dir))
1191                 {
1192                   result = -1;
1193                   errcode = EINVAL;
1194                 }
1195             }
1196             break;
1197 #endif
1198
1199           case __NR_flock:
1200             result = flock(arg1, arg2);
1201             errcode = errno;
1202             break;
1203
1204           case __NR_msync:
1205             result = msync((void *) arg1, arg2, arg3);
1206             errcode = errno;
1207             break;
1208
1209           case __NR_readv:
1210             {
1211               struct iovec vector;
1212
1213               vector = *((struct iovec *) t2h_addr(cb, &s, arg2));
1214               translate_endian((void *) &vector, sizeof(vector));
1215
1216               result = readv(arg1, &vector, arg3);
1217               errcode = errno;
1218             }
1219             break;
1220
1221           case __NR_writev:
1222             {
1223               struct iovec vector;
1224
1225               vector = *((struct iovec *) t2h_addr(cb, &s, arg2));
1226               translate_endian((void *) &vector, sizeof(vector));
1227
1228               result = writev(arg1, &vector, arg3);
1229               errcode = errno;
1230             }
1231             break;
1232
1233           case __NR_fdatasync:
1234             result = fdatasync(arg1);
1235             errcode = errno;
1236             break;
1237
1238           case __NR_mlock:
1239             result = mlock((void *) t2h_addr(cb, &s, arg1), arg2);
1240             errcode = errno;
1241             break;
1242
1243           case __NR_munlock:
1244             result = munlock((void *) t2h_addr(cb, &s, arg1), arg2);
1245             errcode = errno;
1246             break;
1247
1248           case __NR_nanosleep:
1249             {
1250               struct timespec req, rem;
1251
1252               req = *((struct timespec *) t2h_addr(cb, &s, arg2));
1253               translate_endian((void *) &req, sizeof(req));
1254
1255               result = nanosleep(&req, &rem);
1256               errcode = errno;
1257
1258               if (result != 0)
1259                 break;
1260
1261               translate_endian((void *) &rem, sizeof(rem));
1262               if ((s.write_mem) (cb, &s, arg2, (char *) &rem, sizeof(rem))
1263                   != sizeof(rem))
1264                 {
1265                   result = -1;
1266                   errcode = EINVAL;
1267                 }
1268             }
1269             break;
1270
1271           case __NR_mremap: /* FIXME */
1272             result = (int) mremap((void *) t2h_addr(cb, &s, arg1), arg2, arg3, arg4);
1273             errcode = errno;
1274             break;
1275
1276           case __NR_getresuid:
1277             {
1278               uid_t ruid, euid, suid;
1279
1280               result = getresuid(&ruid, &euid, &suid);
1281               errcode = errno;
1282
1283               if (result != 0)
1284                 break;
1285
1286               *((uid_t *) t2h_addr(cb, &s, arg1)) = conv_endian(ruid);
1287               *((uid_t *) t2h_addr(cb, &s, arg2)) = conv_endian(euid);
1288               *((uid_t *) t2h_addr(cb, &s, arg3)) = conv_endian(suid);
1289             }
1290             break;
1291
1292           case __NR_poll:
1293             {
1294               struct pollfd ufds;
1295
1296               ufds = *((struct pollfd *) t2h_addr(cb, &s, arg1));
1297               ufds.fd = conv_endian(ufds.fd);
1298               ufds.events = conv_endian16(ufds.events);
1299               ufds.revents = conv_endian16(ufds.revents);
1300
1301               result = poll(&ufds, arg2, arg3);
1302               errcode = errno;
1303             }
1304             break;
1305
1306           case __NR_getresgid:
1307             {
1308               uid_t rgid, egid, sgid;
1309
1310               result = getresgid(&rgid, &egid, &sgid);
1311               errcode = errno;
1312
1313               if (result != 0)
1314                 break;
1315
1316               *((uid_t *) t2h_addr(cb, &s, arg1)) = conv_endian(rgid);
1317               *((uid_t *) t2h_addr(cb, &s, arg2)) = conv_endian(egid);
1318               *((uid_t *) t2h_addr(cb, &s, arg3)) = conv_endian(sgid);
1319             }
1320             break;
1321
1322           case __NR_pread:
1323             result =  pread(arg1, (void *) t2h_addr(cb, &s, arg2), arg3, arg4);
1324             errcode = errno;
1325             break;
1326
1327           case __NR_pwrite:
1328             result =  pwrite(arg1, (void *) t2h_addr(cb, &s, arg2), arg3, arg4);
1329             errcode = errno;
1330             break;
1331
1332           case __NR_chown:
1333             result = chown((char *) t2h_addr(cb, &s, arg1), arg2, arg3);
1334             errcode = errno;
1335             break;
1336
1337           case __NR_getcwd:
1338             result = (int) getcwd((char *) t2h_addr(cb, &s, arg1), arg2);
1339             errcode = errno;
1340             break;
1341
1342           case __NR_sendfile:
1343             {
1344               off_t offset;
1345
1346               offset = *((off_t *) t2h_addr(cb, &s, arg3));
1347               offset = conv_endian(offset);
1348
1349               result = sendfile(arg1, arg2, &offset, arg3);
1350               errcode = errno;
1351
1352               if (result != 0)
1353                 break;
1354
1355               *((off_t *) t2h_addr(cb, &s, arg3)) = conv_endian(offset);
1356             }
1357             break;
1358
1359           default:
1360             result = -1;
1361             errcode = ENOSYS;
1362             break;
1363           }
1364
1365         if (result == -1)
1366           m32rbf_h_gr_set (current_cpu, 0, -errcode);
1367         else
1368           m32rbf_h_gr_set (current_cpu, 0, result);
1369         break;
1370       }
1371
1372     case TRAP_BREAKPOINT:
1373       sim_engine_halt (sd, current_cpu, NULL, pc,
1374                        sim_stopped, SIM_SIGTRAP);
1375       break;
1376
1377     case TRAP_FLUSH_CACHE:
1378       /* Do nothing.  */
1379       break;
1380
1381     default :
1382       {
1383         /* Use cr5 as EVB (EIT Vector Base) register.  */
1384         USI new_pc = m32rbf_h_cr_get (current_cpu, 5) + 0x40 + num * 4;
1385         return new_pc;
1386       }
1387     }
1388
1389   /* Fake an "rte" insn.  */
1390   /* FIXME: Should duplicate all of rte processing.  */
1391   return (pc & -4) + 4;
1392 }