sim/m32r/traps-linux.c

   1 /* m32r exception, interrupt, and trap (EIT) support
   2    Copyright (C) 1998, 2003, 2007, 2008, 2009 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 3 of the License, or
  10    (at your option) 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
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include "sim-main.h"
  21 #include "syscall.h"
  22 #include "targ-vals.h"
  23 #include <dirent.h>
  24 #include <errno.h>
  25 #include <fcntl.h>
  26 #include <time.h>
  27 #include <unistd.h>
  28 #include <utime.h>
  29 #include <sys/mman.h>
  30 #include <sys/poll.h>
  31 #include <sys/resource.h>
  32 #include <sys/sysinfo.h>
  33 #include <sys/stat.h>
  34 #include <sys/time.h>
  35 #include <sys/timeb.h>
  36 #include <sys/timex.h>
  37 #include <sys/types.h>
  38 #include <sys/uio.h>
  39 #include <sys/utsname.h>
  40 #include <sys/vfs.h>
  41 #include <linux/sysctl.h>
  42 #include <linux/types.h>
  43 #include <linux/unistd.h>
  44
  45 #define TRAP_ELF_SYSCALL 0
  46 #define TRAP_LINUX_SYSCALL 2
  47 #define TRAP_FLUSH_CACHE 12
  48
  49 /* The semantic code invokes this for invalid (unrecognized) instructions.  */
  50
  51 SEM_PC
  52 sim_engine_invalid_insn (SIM_CPU *current_cpu, IADDR cia, SEM_PC vpc)
  53 {
  54   SIM_DESC sd = CPU_STATE (current_cpu);
  55
  56 #if 0
  57   if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)
  58     {
  59       h_bsm_set (current_cpu, h_sm_get (current_cpu));
  60       h_bie_set (current_cpu, h_ie_get (current_cpu));
  61       h_bcond_set (current_cpu, h_cond_get (current_cpu));
  62       /* sm not changed */
  63       h_ie_set (current_cpu, 0);
  64       h_cond_set (current_cpu, 0);
  65
  66       h_bpc_set (current_cpu, cia);
  67
  68       sim_engine_restart (CPU_STATE (current_cpu), current_cpu, NULL,
  69                           EIT_RSVD_INSN_ADDR);
  70     }
  71   else
  72 #endif
  73     sim_engine_halt (sd, current_cpu, NULL, cia, sim_stopped, SIM_SIGILL);
  74   return vpc;
  75 }
  76
  77 /* Process an address exception.  */
  78
  79 void
  80 m32r_core_signal (SIM_DESC sd, SIM_CPU *current_cpu, sim_cia cia,
  81                   unsigned int map, int nr_bytes, address_word addr,
  82                   transfer_type transfer, sim_core_signals sig)
  83 {
  84   if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)
  85     {
  86       m32rbf_h_cr_set (current_cpu, H_CR_BBPC,
  87                        m32rbf_h_cr_get (current_cpu, H_CR_BPC));
  88       if (MACH_NUM (CPU_MACH (current_cpu)) == MACH_M32R)
  89         {
  90           m32rbf_h_bpsw_set (current_cpu, m32rbf_h_psw_get (current_cpu));
  91           /* sm not changed */
  92           m32rbf_h_psw_set (current_cpu, m32rbf_h_psw_get (current_cpu) & 0x80);
  93         }
  94       else if (MACH_NUM (CPU_MACH (current_cpu)) == MACH_M32RX)
  95         {
  96           m32rxf_h_bpsw_set (current_cpu, m32rxf_h_psw_get (current_cpu));
  97           /* sm not changed */
  98           m32rxf_h_psw_set (current_cpu, m32rxf_h_psw_get (current_cpu) & 0x80);
  99         }
 100       else
 101         {
 102           m32r2f_h_bpsw_set (current_cpu, m32r2f_h_psw_get (current_cpu));
 103           /* sm not changed */
 104           m32r2f_h_psw_set (current_cpu, m32r2f_h_psw_get (current_cpu) & 0x80);
 105         }
 106       m32rbf_h_cr_set (current_cpu, H_CR_BPC, cia);
 107
 108       sim_engine_restart (CPU_STATE (current_cpu), current_cpu, NULL,
 109                           EIT_ADDR_EXCP_ADDR);
 110     }
 111   else
 112     sim_core_signal (sd, current_cpu, cia, map, nr_bytes, addr,
 113                      transfer, sig);
 114 }
 115 \f
 116 /* Read/write functions for system call interface.  */
 117
 118 static int
 119 syscall_read_mem (host_callback *cb, struct cb_syscall *sc,
 120                   unsigned long taddr, char *buf, int bytes)
 121 {
 122   SIM_DESC sd = (SIM_DESC) sc->p1;
 123   SIM_CPU *cpu = (SIM_CPU *) sc->p2;
 124
 125   return sim_core_read_buffer (sd, cpu, read_map, buf, taddr, bytes);
 126 }
 127
 128 static int
 129 syscall_write_mem (host_callback *cb, struct cb_syscall *sc,
 130                    unsigned long taddr, const char *buf, int bytes)
 131 {
 132   SIM_DESC sd = (SIM_DESC) sc->p1;
 133   SIM_CPU *cpu = (SIM_CPU *) sc->p2;
 134
 135   return sim_core_write_buffer (sd, cpu, write_map, buf, taddr, bytes);
 136 }
 137
 138 /* Translate target's address to host's address.  */
 139
 140 static void *
 141 t2h_addr (host_callback *cb, struct cb_syscall *sc,
 142           unsigned long taddr)
 143 {
 144   extern sim_core_trans_addr (SIM_DESC, sim_cpu *, unsigned, address_word);
 145   void *addr;
 146   SIM_DESC sd = (SIM_DESC) sc->p1;
 147   SIM_CPU *cpu = (SIM_CPU *) sc->p2;
 148
 149   if (taddr == 0)
 150     return NULL;
 151
 152   return sim_core_trans_addr (sd, cpu, read_map, taddr);
 153 }
 154
 155 static unsigned int
 156 conv_endian (unsigned int tvalue)
 157 {
 158   unsigned int hvalue;
 159   unsigned int t1, t2, t3, t4;
 160
 161   if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN)
 162     {
 163       t1 = tvalue & 0xff000000;
 164       t2 = tvalue & 0x00ff0000;
 165       t3 = tvalue & 0x0000ff00;
 166       t4 = tvalue & 0x000000ff;
 167
 168       hvalue =  t1 >> 24;
 169       hvalue += t2 >> 8;
 170       hvalue += t3 << 8;
 171       hvalue += t4 << 24;
 172     }
 173   else
 174     hvalue = tvalue;
 175
 176   return hvalue;
 177 }
 178
 179 static unsigned short
 180 conv_endian16 (unsigned short tvalue)
 181 {
 182   unsigned short hvalue;
 183   unsigned short t1, t2;
 184
 185   if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN)
 186     {
 187       t1 = tvalue & 0xff00;
 188       t2 = tvalue & 0x00ff;
 189
 190       hvalue =  t1 >> 8;
 191       hvalue += t2 << 8;
 192     }
 193   else
 194     hvalue = tvalue;
 195
 196   return hvalue;
 197 }
 198
 199 static void
 200 translate_endian(void *addr, size_t size)
 201 {
 202   unsigned int *p = (unsigned int *) addr;
 203   int i;
 204
 205   for (i = 0; i <= size - 4; i += 4,p++)
 206     *p = conv_endian(*p);
 207
 208   if (i <= size - 2)
 209     *((unsigned short *) p) = conv_endian16(*((unsigned short *) p));
 210 }
 211
 212 /* Trap support.
 213    The result is the pc address to continue at.
 214    Preprocessing like saving the various registers has already been done.  */
 215
 216 USI
 217 m32r_trap (SIM_CPU *current_cpu, PCADDR pc, int num)
 218 {
 219   SIM_DESC sd = CPU_STATE (current_cpu);
 220   host_callback *cb = STATE_CALLBACK (sd);
 221
 222 #ifdef SIM_HAVE_BREAKPOINTS
 223   /* Check for breakpoints "owned" by the simulator first, regardless
 224      of --environment.  */
 225   if (num == TRAP_BREAKPOINT)
 226     {
 227       /* First try sim-break.c.  If it's a breakpoint the simulator "owns"
 228          it doesn't return.  Otherwise it returns and let's us try.  */
 229       sim_handle_breakpoint (sd, current_cpu, pc);
 230       /* Fall through.  */
 231     }
 232 #endif
 233
 234   switch (num)
 235     {
 236     case TRAP_ELF_SYSCALL :
 237       {
 238         CB_SYSCALL s;
 239
 240         CB_SYSCALL_INIT (&s);
 241         s.func = m32rbf_h_gr_get (current_cpu, 0);
 242         s.arg1 = m32rbf_h_gr_get (current_cpu, 1);
 243         s.arg2 = m32rbf_h_gr_get (current_cpu, 2);
 244         s.arg3 = m32rbf_h_gr_get (current_cpu, 3);
 245
 246         if (s.func == TARGET_SYS_exit)
 247           {
 248             sim_engine_halt (sd, current_cpu, NULL, pc, sim_exited, s.arg1);
 249           }
 250
 251         s.p1 = (PTR) sd;
 252         s.p2 = (PTR) current_cpu;
 253         s.read_mem = syscall_read_mem;
 254         s.write_mem = syscall_write_mem;
 255         cb_syscall (cb, &s);
 256         m32rbf_h_gr_set (current_cpu, 2, s.errcode);
 257         m32rbf_h_gr_set (current_cpu, 0, s.result);
 258         m32rbf_h_gr_set (current_cpu, 1, s.result2);
 259         break;
 260       }
 261
 262     case TRAP_LINUX_SYSCALL :
 263       {
 264         CB_SYSCALL s;
 265         unsigned int func, arg1, arg2, arg3, arg4, arg5, arg6, arg7;
 266         int result, result2, errcode;
 267
 268         if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)
 269           {
 270             /* The new pc is the trap vector entry.
 271                We assume there's a branch there to some handler.
 272                Use cr5 as EVB (EIT Vector Base) register.  */
 273             USI new_pc = m32rbf_h_cr_get (current_cpu, 5) + 0x40 + num * 4;
 274             return new_pc;
 275           }
 276
 277         func = m32rbf_h_gr_get (current_cpu, 7);
 278         arg1 = m32rbf_h_gr_get (current_cpu, 0);
 279         arg2 = m32rbf_h_gr_get (current_cpu, 1);
 280         arg3 = m32rbf_h_gr_get (current_cpu, 2);
 281         arg4 = m32rbf_h_gr_get (current_cpu, 3);
 282         arg5 = m32rbf_h_gr_get (current_cpu, 4);
 283         arg6 = m32rbf_h_gr_get (current_cpu, 5);
 284         arg7 = m32rbf_h_gr_get (current_cpu, 6);
 285
 286         CB_SYSCALL_INIT (&s);
 287         s.func = func;
 288         s.arg1 = arg1;
 289         s.arg2 = arg2;
 290         s.arg3 = arg3;
 291
 292         s.p1 = (PTR) sd;
 293         s.p2 = (PTR) current_cpu;
 294         s.read_mem = syscall_read_mem;
 295         s.write_mem = syscall_write_mem;
 296
 297         result = 0;
 298         result2 = 0;
 299         errcode = 0;
 300
 301         switch (func)
 302           {
 303           case __NR_exit:
 304             sim_engine_halt (sd, current_cpu, NULL, pc, sim_exited, arg1);
 305             break;
 306
 307           case __NR_read:
 308             result = read(arg1, t2h_addr(cb, &s, arg2), arg3);
 309             errcode = errno;
 310             break;
 311
 312           case __NR_write:
 313             result = write(arg1, t2h_addr(cb, &s, arg2), arg3);
 314             errcode = errno;
 315             break;
 316
 317           case __NR_open:
 318             result = open((char *) t2h_addr(cb, &s, arg1), arg2, arg3);
 319             errcode = errno;
 320             break;
 321
 322           case __NR_close:
 323             result = close(arg1);
 324             errcode = errno;
 325             break;
 326
 327           case __NR_creat:
 328             result = creat((char *) t2h_addr(cb, &s, arg1), arg2);
 329             errcode = errno;
 330             break;
 331
 332           case __NR_link:
 333             result = link((char *) t2h_addr(cb, &s, arg1),
 334                           (char *) t2h_addr(cb, &s, arg2));
 335             errcode = errno;
 336             break;
 337
 338           case __NR_unlink:
 339             result = unlink((char *) t2h_addr(cb, &s, arg1));
 340             errcode = errno;
 341             break;
 342
 343           case __NR_chdir:
 344             result = chdir((char *) t2h_addr(cb, &s, arg1));
 345             errcode = errno;
 346             break;
 347
 348           case __NR_time:
 349             {
 350               time_t t;
 351
 352               if (arg1 == 0)
 353                 {
 354                   result = (int) time(NULL);
 355                   errcode = errno;
 356                 }
 357               else
 358                 {
 359                   result = (int) time(&t);
 360                   errcode = errno;
 361
 362                   if (result != 0)
 363                     break;
 364
 365                   translate_endian((void *) &t, sizeof(t));
 366                   if ((s.write_mem) (cb, &s, arg1, (char *) &t, sizeof(t)) != sizeof(t))
 367                     {
 368                       result = -1;
 369                       errcode = EINVAL;
 370                     }
 371                 }
 372             }
 373             break;
 374
 375           case __NR_mknod:
 376             result = mknod((char *) t2h_addr(cb, &s, arg1),
 377                            (mode_t) arg2, (dev_t) arg3);
 378             errcode = errno;
 379             break;
 380
 381           case __NR_chmod:
 382             result = chmod((char *) t2h_addr(cb, &s, arg1), (mode_t) arg2);
 383             errcode = errno;
 384             break;
 385
 386           case __NR_lchown32:
 387           case __NR_lchown:
 388             result = lchown((char *) t2h_addr(cb, &s, arg1),
 389                             (uid_t) arg2, (gid_t) arg3);
 390             errcode = errno;
 391             break;
 392
 393           case __NR_lseek:
 394             result = (int) lseek(arg1, (off_t) arg2, arg3);
 395             errcode = errno;
 396             break;
 397
 398           case __NR_getpid:
 399             result = getpid();
 400             errcode = errno;
 401             break;
 402
 403           case __NR_getuid32:
 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_getgid32:
 488           case __NR_getgid:
 489             result = getgid();
 490             errcode = errno;
 491             break;
 492
 493           case __NR_geteuid32:
 494           case __NR_geteuid:
 495             result = geteuid();
 496             errcode = errno;
 497             break;
 498
 499           case __NR_getegid32:
 500           case __NR_getegid:
 501             result = getegid();
 502             errcode = errno;
 503             break;
 504
 505           case __NR_ioctl:
 506             result = ioctl(arg1, arg2, arg3);
 507             errcode = errno;
 508             break;
 509
 510           case __NR_fcntl:
 511             result = fcntl(arg1, arg2, arg3);
 512             errcode = errno;
 513             break;
 514
 515           case __NR_dup2:
 516             result = dup2(arg1, arg2);
 517             errcode = errno;
 518             break;
 519
 520           case __NR_getppid:
 521             result = getppid();
 522             errcode = errno;
 523             break;
 524
 525           case __NR_getpgrp:
 526             result = getpgrp();
 527             errcode = errno;
 528             break;
 529
 530           case __NR_getrlimit:
 531             {
 532               struct rlimit rlim;
 533
 534               result = getrlimit(arg1, &rlim);
 535               errcode = errno;
 536
 537               if (result != 0)
 538                 break;
 539
 540               translate_endian((void *) &rlim, sizeof(rlim));
 541               if ((s.write_mem) (cb, &s, arg2, (char *) &rlim, sizeof(rlim))
 542                   != sizeof(rlim))
 543                 {
 544                   result = -1;
 545                   errcode = EINVAL;
 546                 }
 547             }
 548             break;
 549
 550           case __NR_getrusage:
 551             {
 552               struct rusage usage;
 553
 554               result = getrusage(arg1, &usage);
 555               errcode = errno;
 556
 557               if (result != 0)
 558                 break;
 559
 560               translate_endian((void *) &usage, sizeof(usage));
 561               if ((s.write_mem) (cb, &s, arg2, (char *) &usage, sizeof(usage))
 562                   != sizeof(usage))
 563                 {
 564                   result = -1;
 565                   errcode = EINVAL;
 566                 }
 567             }
 568             break;
 569
 570           case __NR_gettimeofday:
 571             {
 572               struct timeval tv;
 573               struct timezone tz;
 574
 575               result = gettimeofday(&tv, &tz);
 576               errcode = errno;
 577
 578               if (result != 0)
 579                 break;
 580
 581               translate_endian((void *) &tv, sizeof(tv));
 582               if ((s.write_mem) (cb, &s, arg1, (char *) &tv, sizeof(tv))
 583                   != sizeof(tv))
 584                 {
 585                   result = -1;
 586                   errcode = EINVAL;
 587                 }
 588
 589               translate_endian((void *) &tz, sizeof(tz));
 590               if ((s.write_mem) (cb, &s, arg2, (char *) &tz, sizeof(tz))
 591                   != sizeof(tz))
 592                 {
 593                   result = -1;
 594                   errcode = EINVAL;
 595                 }
 596             }
 597             break;
 598
 599           case __NR_getgroups32:
 600           case __NR_getgroups:
 601             {
 602               gid_t *list;
 603
 604               if (arg1 > 0)
 605                 list = (gid_t *) malloc(arg1 * sizeof(gid_t));
 606
 607               result = getgroups(arg1, list);
 608               errcode = errno;
 609
 610               if (result != 0)
 611                 break;
 612
 613               translate_endian((void *) list, arg1 * sizeof(gid_t));
 614               if (arg1 > 0)
 615                 if ((s.write_mem) (cb, &s, arg2, (char *) list, arg1 * sizeof(gid_t))
 616                     != arg1 * sizeof(gid_t))
 617                   {
 618                     result = -1;
 619                      errcode = EINVAL;
 620                   }
 621             }
 622             break;
 623
 624           case __NR_select:
 625             {
 626               int n;
 627               fd_set readfds;
 628               fd_set *treadfdsp;
 629               fd_set *hreadfdsp;
 630               fd_set writefds;
 631               fd_set *twritefdsp;
 632               fd_set *hwritefdsp;
 633               fd_set exceptfds;
 634               fd_set *texceptfdsp;
 635               fd_set *hexceptfdsp;
 636               struct timeval *ttimeoutp;
 637               struct timeval timeout;
 638
 639               n = arg1;
 640
 641               treadfdsp = (fd_set *) arg2;
 642               if (treadfdsp != NULL)
 643                 {
 644                   readfds = *((fd_set *) t2h_addr(cb, &s, (unsigned int) treadfdsp));
 645                   translate_endian((void *) &readfds, sizeof(readfds));
 646                   hreadfdsp = &readfds;
 647                 }
 648               else
 649                 hreadfdsp = NULL;
 650
 651               twritefdsp  = (fd_set *) arg3;
 652               if (twritefdsp != NULL)
 653                 {
 654                   writefds = *((fd_set *) t2h_addr(cb, &s, (unsigned int) twritefdsp));
 655                   translate_endian((void *) &writefds, sizeof(writefds));
 656                   hwritefdsp = &writefds;
 657                 }
 658               else
 659                 hwritefdsp = NULL;
 660
 661               texceptfdsp = (fd_set *) arg4;
 662               if (texceptfdsp != NULL)
 663                 {
 664                   exceptfds = *((fd_set *) t2h_addr(cb, &s, (unsigned int) texceptfdsp));
 665                   translate_endian((void *) &exceptfds, sizeof(exceptfds));
 666                   hexceptfdsp = &exceptfds;
 667                 }
 668               else
 669                 hexceptfdsp = NULL;
 670
 671               ttimeoutp = (struct timeval *) arg5;
 672               timeout = *((struct timeval *) t2h_addr(cb, &s, (unsigned int) ttimeoutp));
 673               translate_endian((void *) &timeout, sizeof(timeout));
 674
 675               result = select(n, hreadfdsp, hwritefdsp, hexceptfdsp, &timeout);
 676               errcode = errno;
 677
 678               if (result != 0)
 679                 break;
 680
 681               if (treadfdsp != NULL)
 682                 {
 683                   translate_endian((void *) &readfds, sizeof(readfds));
 684                   if ((s.write_mem) (cb, &s, (unsigned long) treadfdsp,
 685                        (char *) &readfds, sizeof(readfds)) != sizeof(readfds))
 686                     {
 687                       result = -1;
 688                       errcode = EINVAL;
 689                     }
 690                 }
 691
 692               if (twritefdsp != NULL)
 693                 {
 694                   translate_endian((void *) &writefds, sizeof(writefds));
 695                   if ((s.write_mem) (cb, &s, (unsigned long) twritefdsp,
 696                        (char *) &writefds, sizeof(writefds)) != sizeof(writefds))
 697                     {
 698                       result = -1;
 699                       errcode = EINVAL;
 700                     }
 701                 }
 702
 703               if (texceptfdsp != NULL)
 704                 {
 705                   translate_endian((void *) &exceptfds, sizeof(exceptfds));
 706                   if ((s.write_mem) (cb, &s, (unsigned long) texceptfdsp,
 707                        (char *) &exceptfds, sizeof(exceptfds)) != sizeof(exceptfds))
 708                     {
 709                       result = -1;
 710                       errcode = EINVAL;
 711                     }
 712                 }
 713
 714               translate_endian((void *) &timeout, sizeof(timeout));
 715               if ((s.write_mem) (cb, &s, (unsigned long) ttimeoutp,
 716                    (char *) &timeout, sizeof(timeout)) != sizeof(timeout))
 717                 {
 718                   result = -1;
 719                   errcode = EINVAL;
 720                 }
 721             }
 722             break;
 723
 724           case __NR_symlink:
 725             result = symlink((char *) t2h_addr(cb, &s, arg1),
 726                              (char *) t2h_addr(cb, &s, arg2));
 727             errcode = errno;
 728             break;
 729
 730           case __NR_readlink:
 731             result = readlink((char *) t2h_addr(cb, &s, arg1),
 732                               (char *) t2h_addr(cb, &s, arg2),
 733                               arg3);
 734             errcode = errno;
 735             break;
 736
 737           case __NR_readdir:
 738             result = (int) readdir((DIR *) t2h_addr(cb, &s, arg1));
 739             errcode = errno;
 740             break;
 741
 742 #if 0
 743           case __NR_mmap:
 744             {
 745               result = (int) mmap((void *) t2h_addr(cb, &s, arg1),
 746                                   arg2, arg3, arg4, arg5, arg6);
 747               errcode = errno;
 748
 749               if (errno == 0)
 750                 {
 751                   sim_core_attach (sd, NULL,
 752                                    0, access_read_write_exec, 0,
 753                                    result, arg2, 0, NULL, NULL);
 754                 }
 755             }
 756             break;
 757 #endif
 758           case __NR_mmap2:
 759             {
 760               void *addr;
 761               size_t len;
 762               int prot, flags, fildes;
 763               off_t off;
 764
 765               addr   = (void *)  t2h_addr(cb, &s, arg1);
 766               len    = arg2;
 767               prot   = arg3;
 768               flags  = arg4;
 769               fildes = arg5;
 770               off    = arg6 << 12;
 771
 772               result = (int) mmap(addr, len, prot, flags, fildes, off);
 773               errcode = errno;
 774               if (result != -1)
 775                 {
 776                   char c;
 777                   if (sim_core_read_buffer (sd, NULL, read_map, &c, result, 1) == 0)
 778                     sim_core_attach (sd, NULL,
 779                                      0, access_read_write_exec, 0,
 780                                      result, len, 0, NULL, NULL);
 781                 }
 782             }
 783             break;
 784
 785           case __NR_mmap:
 786             {
 787               void *addr;
 788               size_t len;
 789               int prot, flags, fildes;
 790               off_t off;
 791
 792               addr   = *((void **)  t2h_addr(cb, &s, arg1));
 793               len    = *((size_t *) t2h_addr(cb, &s, arg1 + 4));
 794               prot   = *((int *)    t2h_addr(cb, &s, arg1 + 8));
 795               flags  = *((int *)    t2h_addr(cb, &s, arg1 + 12));
 796               fildes = *((int *)    t2h_addr(cb, &s, arg1 + 16));
 797               off    = *((off_t *)  t2h_addr(cb, &s, arg1 + 20));
 798
 799               addr   = (void *) conv_endian((unsigned int) addr);
 800               len    = conv_endian(len);
 801               prot   = conv_endian(prot);
 802               flags  = conv_endian(flags);
 803               fildes = conv_endian(fildes);
 804               off    = conv_endian(off);
 805
 806               //addr   = (void *) t2h_addr(cb, &s, (unsigned int) addr);
 807               result = (int) mmap(addr, len, prot, flags, fildes, off);
 808               errcode = errno;
 809
 810               //if (errno == 0)
 811               if (result != -1)
 812                 {
 813                   char c;
 814                   if (sim_core_read_buffer (sd, NULL, read_map, &c, result, 1) == 0)
 815                     sim_core_attach (sd, NULL,
 816                                      0, access_read_write_exec, 0,
 817                                      result, len, 0, NULL, NULL);
 818                 }
 819             }
 820             break;
 821
 822           case __NR_munmap:
 823             {
 824             result = munmap((void *)arg1, arg2);
 825             errcode = errno;
 826             if (result != -1)
 827               {
 828                 sim_core_detach (sd, NULL, 0, arg2, result);
 829               }
 830             }
 831             break;
 832
 833           case __NR_truncate:
 834             result = truncate((char *) t2h_addr(cb, &s, arg1), arg2);
 835             errcode = errno;
 836             break;
 837
 838           case __NR_ftruncate:
 839             result = ftruncate(arg1, arg2);
 840             errcode = errno;
 841             break;
 842
 843           case __NR_fchmod:
 844             result = fchmod(arg1, arg2);
 845             errcode = errno;
 846             break;
 847
 848           case __NR_fchown32:
 849           case __NR_fchown:
 850             result = fchown(arg1, arg2, arg3);
 851             errcode = errno;
 852             break;
 853
 854           case __NR_statfs:
 855             {
 856               struct statfs statbuf;
 857
 858               result = statfs((char *) t2h_addr(cb, &s, arg1), &statbuf);
 859               errcode = errno;
 860
 861               if (result != 0)
 862                 break;
 863
 864               translate_endian((void *) &statbuf, sizeof(statbuf));
 865               if ((s.write_mem) (cb, &s, arg2, (char *) &statbuf, sizeof(statbuf))
 866                   != sizeof(statbuf))
 867                 {
 868                   result = -1;
 869                   errcode = EINVAL;
 870                 }
 871             }
 872             break;
 873
 874           case __NR_fstatfs:
 875             {
 876               struct statfs statbuf;
 877
 878               result = fstatfs(arg1, &statbuf);
 879               errcode = errno;
 880
 881               if (result != 0)
 882                 break;
 883
 884               translate_endian((void *) &statbuf, sizeof(statbuf));
 885               if ((s.write_mem) (cb, &s, arg2, (char *) &statbuf, sizeof(statbuf))
 886                   != sizeof(statbuf))
 887                 {
 888                   result = -1;
 889                   errcode = EINVAL;
 890                 }
 891             }
 892             break;
 893
 894           case __NR_syslog:
 895             result = syslog(arg1, (char *) t2h_addr(cb, &s, arg2));
 896             errcode = errno;
 897             break;
 898
 899           case __NR_setitimer:
 900             {
 901               struct itimerval value, ovalue;
 902
 903               value = *((struct itimerval *) t2h_addr(cb, &s, arg2));
 904               translate_endian((void *) &value, sizeof(value));
 905
 906               if (arg2 == 0)
 907                 {
 908                   result = setitimer(arg1, &value, NULL);
 909                   errcode = errno;
 910                 }
 911               else
 912                 {
 913                   result = setitimer(arg1, &value, &ovalue);
 914                   errcode = errno;
 915
 916                   if (result != 0)
 917                     break;
 918
 919                   translate_endian((void *) &ovalue, sizeof(ovalue));
 920                   if ((s.write_mem) (cb, &s, arg3, (char *) &ovalue, sizeof(ovalue))
 921                       != sizeof(ovalue))
 922                     {
 923                       result = -1;
 924                       errcode = EINVAL;
 925                     }
 926                 }
 927             }
 928             break;
 929
 930           case __NR_getitimer:
 931             {
 932               struct itimerval value;
 933
 934               result = getitimer(arg1, &value);
 935               errcode = errno;
 936
 937               if (result != 0)
 938                 break;
 939
 940               translate_endian((void *) &value, sizeof(value));
 941               if ((s.write_mem) (cb, &s, arg2, (char *) &value, sizeof(value))
 942                   != sizeof(value))
 943                 {
 944                   result = -1;
 945                   errcode = EINVAL;
 946                 }
 947             }
 948             break;
 949
 950           case __NR_stat:
 951             {
 952               char *buf;
 953               int buflen;
 954               struct stat statbuf;
 955
 956               result = stat((char *) t2h_addr(cb, &s, arg1), &statbuf);
 957               errcode = errno;
 958               if (result < 0)
 959                 break;
 960
 961               buflen = cb_host_to_target_stat (cb, NULL, NULL);
 962               buf = xmalloc (buflen);
 963               if (cb_host_to_target_stat (cb, &statbuf, buf) != buflen)
 964                 {
 965                   /* The translation failed.  This is due to an internal
 966                      host program error, not the target's fault.  */
 967                   free (buf);
 968                   result = -1;
 969                   errcode = ENOSYS;
 970                   break;
 971                 }
 972               if ((s.write_mem) (cb, &s, arg2, buf, buflen) != buflen)
 973                 {
 974                   free (buf);
 975                   result = -1;
 976                   errcode = EINVAL;
 977                   break;
 978                 }
 979               free (buf);
 980             }
 981             break;
 982
 983           case __NR_lstat:
 984             {
 985               char *buf;
 986               int buflen;
 987               struct stat statbuf;
 988
 989               result = lstat((char *) t2h_addr(cb, &s, arg1), &statbuf);
 990               errcode = errno;
 991               if (result < 0)
 992                 break;
 993
 994               buflen = cb_host_to_target_stat (cb, NULL, NULL);
 995               buf = xmalloc (buflen);
 996               if (cb_host_to_target_stat (cb, &statbuf, buf) != buflen)
 997                 {
 998                   /* The translation failed.  This is due to an internal
 999                      host program error, not the target's fault.  */
1000                   free (buf);
1001                   result = -1;
1002                   errcode = ENOSYS;
1003                   break;
1004                 }
1005               if ((s.write_mem) (cb, &s, arg2, buf, buflen) != buflen)
1006                 {
1007                   free (buf);
1008                   result = -1;
1009                   errcode = EINVAL;
1010                   break;
1011                 }
1012               free (buf);
1013             }
1014             break;
1015
1016           case __NR_fstat:
1017             {
1018               char *buf;
1019               int buflen;
1020               struct stat statbuf;
1021
1022               result = fstat(arg1, &statbuf);
1023               errcode = errno;
1024               if (result < 0)
1025                 break;
1026
1027               buflen = cb_host_to_target_stat (cb, NULL, NULL);
1028               buf = xmalloc (buflen);
1029               if (cb_host_to_target_stat (cb, &statbuf, buf) != buflen)
1030                 {
1031                   /* The translation failed.  This is due to an internal
1032                      host program error, not the target's fault.  */
1033                   free (buf);
1034                   result = -1;
1035                   errcode = ENOSYS;
1036                   break;
1037                 }
1038               if ((s.write_mem) (cb, &s, arg2, buf, buflen) != buflen)
1039                 {
1040                   free (buf);
1041                   result = -1;
1042                   errcode = EINVAL;
1043                   break;
1044                 }
1045               free (buf);
1046             }
1047             break;
1048
1049           case __NR_sysinfo:
1050             {
1051               struct sysinfo info;
1052
1053               result = sysinfo(&info);
1054               errcode = errno;
1055
1056               if (result != 0)
1057                 break;
1058
1059               info.uptime    = conv_endian(info.uptime);
1060               info.loads[0]  = conv_endian(info.loads[0]);
1061               info.loads[1]  = conv_endian(info.loads[1]);
1062               info.loads[2]  = conv_endian(info.loads[2]);
1063               info.totalram  = conv_endian(info.totalram);
1064               info.freeram   = conv_endian(info.freeram);
1065               info.sharedram = conv_endian(info.sharedram);
1066               info.bufferram = conv_endian(info.bufferram);
1067               info.totalswap = conv_endian(info.totalswap);
1068               info.freeswap  = conv_endian(info.freeswap);
1069               info.procs     = conv_endian16(info.procs);
1070 #if LINUX_VERSION_CODE >= 0x20400
1071               info.totalhigh = conv_endian(info.totalhigh);
1072               info.freehigh  = conv_endian(info.freehigh);
1073               info.mem_unit  = conv_endian(info.mem_unit);
1074 #endif
1075               if ((s.write_mem) (cb, &s, arg1, (char *) &info, sizeof(info))
1076                   != sizeof(info))
1077                 {
1078                   result = -1;
1079                   errcode = EINVAL;
1080                 }
1081             }
1082             break;
1083
1084 #if 0
1085           case __NR_ipc:
1086             {
1087               result = ipc(arg1, arg2, arg3, arg4,
1088                            (void *) t2h_addr(cb, &s, arg5), arg6);
1089               errcode = errno;
1090             }
1091             break;
1092 #endif
1093
1094           case __NR_fsync:
1095             result = fsync(arg1);
1096             errcode = errno;
1097             break;
1098
1099           case __NR_uname:
1100             /* utsname contains only arrays of char, so it is not necessary
1101                to translate endian. */
1102             result = uname((struct utsname *) t2h_addr(cb, &s, arg1));
1103             errcode = errno;
1104             break;
1105
1106           case __NR_adjtimex:
1107             {
1108               struct timex buf;
1109
1110               result = adjtimex(&buf);
1111               errcode = errno;
1112
1113               if (result != 0)
1114                 break;
1115
1116               translate_endian((void *) &buf, sizeof(buf));
1117               if ((s.write_mem) (cb, &s, arg1, (char *) &buf, sizeof(buf))
1118                   != sizeof(buf))
1119                 {
1120                   result = -1;
1121                   errcode = EINVAL;
1122                 }
1123             }
1124             break;
1125
1126           case __NR_mprotect:
1127             result = mprotect((void *) arg1, arg2, arg3);
1128             errcode = errno;
1129             break;
1130
1131           case __NR_fchdir:
1132             result = fchdir(arg1);
1133             errcode = errno;
1134             break;
1135
1136           case __NR_setfsuid32:
1137           case __NR_setfsuid:
1138             result = setfsuid(arg1);
1139             errcode = errno;
1140             break;
1141
1142           case __NR_setfsgid32:
1143           case __NR_setfsgid:
1144             result = setfsgid(arg1);
1145             errcode = errno;
1146             break;
1147
1148 #if 0
1149           case __NR__llseek:
1150             {
1151               loff_t buf;
1152
1153               result = _llseek(arg1, arg2, arg3, &buf, arg5);
1154               errcode = errno;
1155
1156               if (result != 0)
1157                 break;
1158
1159               translate_endian((void *) &buf, sizeof(buf));
1160               if ((s.write_mem) (cb, &s, t2h_addr(cb, &s, arg4),
1161                                  (char *) &buf, sizeof(buf)) != sizeof(buf))
1162                 {
1163                   result = -1;
1164                   errcode = EINVAL;
1165                 }
1166             }
1167             break;
1168
1169           case __NR_getdents:
1170             {
1171               struct dirent dir;
1172
1173               result = getdents(arg1, &dir, arg3);
1174               errcode = errno;
1175
1176               if (result != 0)
1177                 break;
1178
1179               dir.d_ino = conv_endian(dir.d_ino);
1180               dir.d_off = conv_endian(dir.d_off);
1181               dir.d_reclen = conv_endian16(dir.d_reclen);
1182               if ((s.write_mem) (cb, &s, arg2, (char *) &dir, sizeof(dir))
1183                   != sizeof(dir))
1184                 {
1185                   result = -1;
1186                   errcode = EINVAL;
1187                 }
1188             }
1189             break;
1190 #endif
1191
1192           case __NR_flock:
1193             result = flock(arg1, arg2);
1194             errcode = errno;
1195             break;
1196
1197           case __NR_msync:
1198             result = msync((void *) arg1, arg2, arg3);
1199             errcode = errno;
1200             break;
1201
1202           case __NR_readv:
1203             {
1204               struct iovec vector;
1205
1206               vector = *((struct iovec *) t2h_addr(cb, &s, arg2));
1207               translate_endian((void *) &vector, sizeof(vector));
1208
1209               result = readv(arg1, &vector, arg3);
1210               errcode = errno;
1211             }
1212             break;
1213
1214           case __NR_writev:
1215             {
1216               struct iovec vector;
1217
1218               vector = *((struct iovec *) t2h_addr(cb, &s, arg2));
1219               translate_endian((void *) &vector, sizeof(vector));
1220
1221               result = writev(arg1, &vector, arg3);
1222               errcode = errno;
1223             }
1224             break;
1225
1226           case __NR_fdatasync:
1227             result = fdatasync(arg1);
1228             errcode = errno;
1229             break;
1230
1231           case __NR_mlock:
1232             result = mlock((void *) t2h_addr(cb, &s, arg1), arg2);
1233             errcode = errno;
1234             break;
1235
1236           case __NR_munlock:
1237             result = munlock((void *) t2h_addr(cb, &s, arg1), arg2);
1238             errcode = errno;
1239             break;
1240
1241           case __NR_nanosleep:
1242             {
1243               struct timespec req, rem;
1244
1245               req = *((struct timespec *) t2h_addr(cb, &s, arg2));
1246               translate_endian((void *) &req, sizeof(req));
1247
1248               result = nanosleep(&req, &rem);
1249               errcode = errno;
1250
1251               if (result != 0)
1252                 break;
1253
1254               translate_endian((void *) &rem, sizeof(rem));
1255               if ((s.write_mem) (cb, &s, arg2, (char *) &rem, sizeof(rem))
1256                   != sizeof(rem))
1257                 {
1258                   result = -1;
1259                   errcode = EINVAL;
1260                 }
1261             }
1262             break;
1263
1264           case __NR_mremap: /* FIXME */
1265             result = (int) mremap((void *) t2h_addr(cb, &s, arg1), arg2, arg3, arg4);
1266             errcode = errno;
1267             break;
1268
1269           case __NR_getresuid32:
1270           case __NR_getresuid:
1271             {
1272               uid_t ruid, euid, suid;
1273
1274               result = getresuid(&ruid, &euid, &suid);
1275               errcode = errno;
1276
1277               if (result != 0)
1278                 break;
1279
1280               *((uid_t *) t2h_addr(cb, &s, arg1)) = conv_endian(ruid);
1281               *((uid_t *) t2h_addr(cb, &s, arg2)) = conv_endian(euid);
1282               *((uid_t *) t2h_addr(cb, &s, arg3)) = conv_endian(suid);
1283             }
1284             break;
1285
1286           case __NR_poll:
1287             {
1288               struct pollfd ufds;
1289
1290               ufds = *((struct pollfd *) t2h_addr(cb, &s, arg1));
1291               ufds.fd = conv_endian(ufds.fd);
1292               ufds.events = conv_endian16(ufds.events);
1293               ufds.revents = conv_endian16(ufds.revents);
1294
1295               result = poll(&ufds, arg2, arg3);
1296               errcode = errno;
1297             }
1298             break;
1299
1300           case __NR_getresgid32:
1301           case __NR_getresgid:
1302             {
1303               uid_t rgid, egid, sgid;
1304
1305               result = getresgid(&rgid, &egid, &sgid);
1306               errcode = errno;
1307
1308               if (result != 0)
1309                 break;
1310
1311               *((uid_t *) t2h_addr(cb, &s, arg1)) = conv_endian(rgid);
1312               *((uid_t *) t2h_addr(cb, &s, arg2)) = conv_endian(egid);
1313               *((uid_t *) t2h_addr(cb, &s, arg3)) = conv_endian(sgid);
1314             }
1315             break;
1316
1317           case __NR_pread:
1318             result =  pread(arg1, (void *) t2h_addr(cb, &s, arg2), arg3, arg4);
1319             errcode = errno;
1320             break;
1321
1322           case __NR_pwrite:
1323             result =  pwrite(arg1, (void *) t2h_addr(cb, &s, arg2), arg3, arg4);
1324             errcode = errno;
1325             break;
1326
1327           case __NR_chown32:
1328           case __NR_chown:
1329             result = chown((char *) t2h_addr(cb, &s, arg1), arg2, arg3);
1330             errcode = errno;
1331             break;
1332
1333           case __NR_getcwd:
1334             result = (int) getcwd((char *) t2h_addr(cb, &s, arg1), arg2);
1335             errcode = errno;
1336             break;
1337
1338           case __NR_sendfile:
1339             {
1340               off_t offset;
1341
1342               offset = *((off_t *) t2h_addr(cb, &s, arg3));
1343               offset = conv_endian(offset);
1344
1345               result = sendfile(arg1, arg2, &offset, arg3);
1346               errcode = errno;
1347
1348               if (result != 0)
1349                 break;
1350
1351               *((off_t *) t2h_addr(cb, &s, arg3)) = conv_endian(offset);
1352             }
1353             break;
1354
1355           default:
1356             result = -1;
1357             errcode = ENOSYS;
1358             break;
1359           }
1360
1361         if (result == -1)
1362           m32rbf_h_gr_set (current_cpu, 0, -errcode);
1363         else
1364           m32rbf_h_gr_set (current_cpu, 0, result);
1365         break;
1366       }
1367
1368     case TRAP_BREAKPOINT:
1369       sim_engine_halt (sd, current_cpu, NULL, pc,
1370                        sim_stopped, SIM_SIGTRAP);
1371       break;
1372
1373     case TRAP_FLUSH_CACHE:
1374       /* Do nothing.  */
1375       break;
1376
1377     default :
1378       {
1379         /* Use cr5 as EVB (EIT Vector Base) register.  */
1380         USI new_pc = m32rbf_h_cr_get (current_cpu, 5) + 0x40 + num * 4;
1381         return new_pc;
1382       }
1383     }
1384
1385   /* Fake an "rte" insn.  */
1386   /* FIXME: Should duplicate all of rte processing.  */
1387   return (pc & -4) + 4;
1388 }