sim/m32r/traps-linux.c

   1 /* m32r exception, interrupt, and trap (EIT) support
   2    Copyright (C) 1998-2013 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   void *addr;
 145   SIM_DESC sd = (SIM_DESC) sc->p1;
 146   SIM_CPU *cpu = (SIM_CPU *) sc->p2;
 147
 148   if (taddr == 0)
 149     return NULL;
 150
 151   return sim_core_trans_addr (sd, cpu, read_map, taddr);
 152 }
 153
 154 static unsigned int
 155 conv_endian (unsigned int tvalue)
 156 {
 157   unsigned int hvalue;
 158   unsigned int t1, t2, t3, t4;
 159
 160   if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN)
 161     {
 162       t1 = tvalue & 0xff000000;
 163       t2 = tvalue & 0x00ff0000;
 164       t3 = tvalue & 0x0000ff00;
 165       t4 = tvalue & 0x000000ff;
 166
 167       hvalue =  t1 >> 24;
 168       hvalue += t2 >> 8;
 169       hvalue += t3 << 8;
 170       hvalue += t4 << 24;
 171     }
 172   else
 173     hvalue = tvalue;
 174
 175   return hvalue;
 176 }
 177
 178 static unsigned short
 179 conv_endian16 (unsigned short tvalue)
 180 {
 181   unsigned short hvalue;
 182   unsigned short t1, t2;
 183
 184   if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN)
 185     {
 186       t1 = tvalue & 0xff00;
 187       t2 = tvalue & 0x00ff;
 188
 189       hvalue =  t1 >> 8;
 190       hvalue += t2 << 8;
 191     }
 192   else
 193     hvalue = tvalue;
 194
 195   return hvalue;
 196 }
 197
 198 static void
 199 translate_endian(void *addr, size_t size)
 200 {
 201   unsigned int *p = (unsigned int *) addr;
 202   int i;
 203
 204   for (i = 0; i <= size - 4; i += 4,p++)
 205     *p = conv_endian(*p);
 206
 207   if (i <= size - 2)
 208     *((unsigned short *) p) = conv_endian16(*((unsigned short *) p));
 209 }
 210
 211 /* Trap support.
 212    The result is the pc address to continue at.
 213    Preprocessing like saving the various registers has already been done.  */
 214
 215 USI
 216 m32r_trap (SIM_CPU *current_cpu, PCADDR pc, int num)
 217 {
 218   SIM_DESC sd = CPU_STATE (current_cpu);
 219   host_callback *cb = STATE_CALLBACK (sd);
 220
 221 #ifdef SIM_HAVE_BREAKPOINTS
 222   /* Check for breakpoints "owned" by the simulator first, regardless
 223      of --environment.  */
 224   if (num == TRAP_BREAKPOINT)
 225     {
 226       /* First try sim-break.c.  If it's a breakpoint the simulator "owns"
 227          it doesn't return.  Otherwise it returns and let's us try.  */
 228       sim_handle_breakpoint (sd, current_cpu, pc);
 229       /* Fall through.  */
 230     }
 231 #endif
 232
 233   switch (num)
 234     {
 235     case TRAP_ELF_SYSCALL :
 236       {
 237         CB_SYSCALL s;
 238
 239         CB_SYSCALL_INIT (&s);
 240         s.func = m32rbf_h_gr_get (current_cpu, 0);
 241         s.arg1 = m32rbf_h_gr_get (current_cpu, 1);
 242         s.arg2 = m32rbf_h_gr_get (current_cpu, 2);
 243         s.arg3 = m32rbf_h_gr_get (current_cpu, 3);
 244
 245         if (s.func == TARGET_SYS_exit)
 246           {
 247             sim_engine_halt (sd, current_cpu, NULL, pc, sim_exited, s.arg1);
 248           }
 249
 250         s.p1 = (PTR) sd;
 251         s.p2 = (PTR) current_cpu;
 252         s.read_mem = syscall_read_mem;
 253         s.write_mem = syscall_write_mem;
 254         cb_syscall (cb, &s);
 255         m32rbf_h_gr_set (current_cpu, 2, s.errcode);
 256         m32rbf_h_gr_set (current_cpu, 0, s.result);
 257         m32rbf_h_gr_set (current_cpu, 1, s.result2);
 258         break;
 259       }
 260
 261     case TRAP_LINUX_SYSCALL :
 262       {
 263         CB_SYSCALL s;
 264         unsigned int func, arg1, arg2, arg3, arg4, arg5, arg6, arg7;
 265         int result, result2, errcode;
 266
 267         if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)
 268           {
 269             /* The new pc is the trap vector entry.
 270                We assume there's a branch there to some handler.
 271                Use cr5 as EVB (EIT Vector Base) register.  */
 272             USI new_pc = m32rbf_h_cr_get (current_cpu, 5) + 0x40 + num * 4;
 273             return new_pc;
 274           }
 275
 276         func = m32rbf_h_gr_get (current_cpu, 7);
 277         arg1 = m32rbf_h_gr_get (current_cpu, 0);
 278         arg2 = m32rbf_h_gr_get (current_cpu, 1);
 279         arg3 = m32rbf_h_gr_get (current_cpu, 2);
 280         arg4 = m32rbf_h_gr_get (current_cpu, 3);
 281         arg5 = m32rbf_h_gr_get (current_cpu, 4);
 282         arg6 = m32rbf_h_gr_get (current_cpu, 5);
 283         arg7 = m32rbf_h_gr_get (current_cpu, 6);
 284
 285         CB_SYSCALL_INIT (&s);
 286         s.func = func;
 287         s.arg1 = arg1;
 288         s.arg2 = arg2;
 289         s.arg3 = arg3;
 290
 291         s.p1 = (PTR) sd;
 292         s.p2 = (PTR) current_cpu;
 293         s.read_mem = syscall_read_mem;
 294         s.write_mem = syscall_write_mem;
 295
 296         result = 0;
 297         result2 = 0;
 298         errcode = 0;
 299
 300         switch (func)
 301           {
 302           case __NR_exit:
 303             sim_engine_halt (sd, current_cpu, NULL, pc, sim_exited, arg1);
 304             break;
 305
 306           case __NR_read:
 307             result = read(arg1, t2h_addr(cb, &s, arg2), arg3);
 308             errcode = errno;
 309             break;
 310
 311           case __NR_write:
 312             result = write(arg1, t2h_addr(cb, &s, arg2), arg3);
 313             errcode = errno;
 314             break;
 315
 316           case __NR_open:
 317             result = open((char *) t2h_addr(cb, &s, arg1), arg2, arg3);
 318             errcode = errno;
 319             break;
 320
 321           case __NR_close:
 322             result = close(arg1);
 323             errcode = errno;
 324             break;
 325
 326           case __NR_creat:
 327             result = creat((char *) t2h_addr(cb, &s, arg1), arg2);
 328             errcode = errno;
 329             break;
 330
 331           case __NR_link:
 332             result = link((char *) t2h_addr(cb, &s, arg1),
 333                           (char *) t2h_addr(cb, &s, arg2));
 334             errcode = errno;
 335             break;
 336
 337           case __NR_unlink:
 338             result = unlink((char *) t2h_addr(cb, &s, arg1));
 339             errcode = errno;
 340             break;
 341
 342           case __NR_chdir:
 343             result = chdir((char *) t2h_addr(cb, &s, arg1));
 344             errcode = errno;
 345             break;
 346
 347           case __NR_time:
 348             {
 349               time_t t;
 350
 351               if (arg1 == 0)
 352                 {
 353                   result = (int) time(NULL);
 354                   errcode = errno;
 355                 }
 356               else
 357                 {
 358                   result = (int) time(&t);
 359                   errcode = errno;
 360
 361                   if (result != 0)
 362                     break;
 363
 364                   translate_endian((void *) &t, sizeof(t));
 365                   if ((s.write_mem) (cb, &s, arg1, (char *) &t, sizeof(t)) != sizeof(t))
 366                     {
 367                       result = -1;
 368                       errcode = EINVAL;
 369                     }
 370                 }
 371             }
 372             break;
 373
 374           case __NR_mknod:
 375             result = mknod((char *) t2h_addr(cb, &s, arg1),
 376                            (mode_t) arg2, (dev_t) arg3);
 377             errcode = errno;
 378             break;
 379
 380           case __NR_chmod:
 381             result = chmod((char *) t2h_addr(cb, &s, arg1), (mode_t) arg2);
 382             errcode = errno;
 383             break;
 384
 385           case __NR_lchown32:
 386           case __NR_lchown:
 387             result = lchown((char *) t2h_addr(cb, &s, arg1),
 388                             (uid_t) arg2, (gid_t) arg3);
 389             errcode = errno;
 390             break;
 391
 392           case __NR_lseek:
 393             result = (int) lseek(arg1, (off_t) arg2, arg3);
 394             errcode = errno;
 395             break;
 396
 397           case __NR_getpid:
 398             result = getpid();
 399             errcode = errno;
 400             break;
 401
 402           case __NR_getuid32:
 403           case __NR_getuid:
 404             result = getuid();
 405             errcode = errno;
 406             break;
 407
 408           case __NR_utime:
 409             {
 410               struct utimbuf buf;
 411
 412               if (arg2 == 0)
 413                 {
 414                   result = utime((char *) t2h_addr(cb, &s, arg1), NULL);
 415                   errcode = errno;
 416                 }
 417               else
 418                 {
 419                   buf = *((struct utimbuf *) t2h_addr(cb, &s, arg2));
 420                   translate_endian((void *) &buf, sizeof(buf));
 421                   result = utime((char *) t2h_addr(cb, &s, arg1), &buf);
 422                   errcode = errno;
 423                 }
 424             }
 425             break;
 426
 427           case __NR_access:
 428             result = access((char *) t2h_addr(cb, &s, arg1), arg2);
 429             errcode = errno;
 430             break;
 431
 432           case __NR_ftime:
 433             {
 434               struct timeb t;
 435
 436               result = ftime(&t);
 437               errcode = errno;
 438
 439               if (result != 0)
 440                 break;
 441
 442               t.time = conv_endian(t.time);
 443               t.millitm = conv_endian16(t.millitm);
 444               t.timezone = conv_endian16(t.timezone);
 445               t.dstflag = conv_endian16(t.dstflag);
 446               if ((s.write_mem) (cb, &s, arg1, (char *) &t, sizeof(t))
 447                   != sizeof(t))
 448                 {
 449                   result = -1;
 450                   errcode = EINVAL;
 451                 }
 452             }
 453
 454           case __NR_sync:
 455             sync();
 456             result = 0;
 457             break;
 458
 459           case __NR_rename:
 460             result = rename((char *) t2h_addr(cb, &s, arg1),
 461                             (char *) t2h_addr(cb, &s, arg2));
 462             errcode = errno;
 463             break;
 464
 465           case __NR_mkdir:
 466             result = mkdir((char *) t2h_addr(cb, &s, arg1), arg2);
 467             errcode = errno;
 468             break;
 469
 470           case __NR_rmdir:
 471             result = rmdir((char *) t2h_addr(cb, &s, arg1));
 472             errcode = errno;
 473             break;
 474
 475           case __NR_dup:
 476             result = dup(arg1);
 477             errcode = errno;
 478             break;
 479
 480           case __NR_brk:
 481             result = brk((void *) arg1);
 482             errcode = errno;
 483             //result = arg1;
 484             break;
 485
 486           case __NR_getgid32:
 487           case __NR_getgid:
 488             result = getgid();
 489             errcode = errno;
 490             break;
 491
 492           case __NR_geteuid32:
 493           case __NR_geteuid:
 494             result = geteuid();
 495             errcode = errno;
 496             break;
 497
 498           case __NR_getegid32:
 499           case __NR_getegid:
 500             result = getegid();
 501             errcode = errno;
 502             break;
 503
 504           case __NR_ioctl:
 505             result = ioctl(arg1, arg2, arg3);
 506             errcode = errno;
 507             break;
 508
 509           case __NR_fcntl:
 510             result = fcntl(arg1, arg2, arg3);
 511             errcode = errno;
 512             break;
 513
 514           case __NR_dup2:
 515             result = dup2(arg1, arg2);
 516             errcode = errno;
 517             break;
 518
 519           case __NR_getppid:
 520             result = getppid();
 521             errcode = errno;
 522             break;
 523
 524           case __NR_getpgrp:
 525             result = getpgrp();
 526             errcode = errno;
 527             break;
 528
 529           case __NR_getrlimit:
 530             {
 531               struct rlimit rlim;
 532
 533               result = getrlimit(arg1, &rlim);
 534               errcode = errno;
 535
 536               if (result != 0)
 537                 break;
 538
 539               translate_endian((void *) &rlim, sizeof(rlim));
 540               if ((s.write_mem) (cb, &s, arg2, (char *) &rlim, sizeof(rlim))
 541                   != sizeof(rlim))
 542                 {
 543                   result = -1;
 544                   errcode = EINVAL;
 545                 }
 546             }
 547             break;
 548
 549           case __NR_getrusage:
 550             {
 551               struct rusage usage;
 552
 553               result = getrusage(arg1, &usage);
 554               errcode = errno;
 555
 556               if (result != 0)
 557                 break;
 558
 559               translate_endian((void *) &usage, sizeof(usage));
 560               if ((s.write_mem) (cb, &s, arg2, (char *) &usage, sizeof(usage))
 561                   != sizeof(usage))
 562                 {
 563                   result = -1;
 564                   errcode = EINVAL;
 565                 }
 566             }
 567             break;
 568
 569           case __NR_gettimeofday:
 570             {
 571               struct timeval tv;
 572               struct timezone tz;
 573
 574               result = gettimeofday(&tv, &tz);
 575               errcode = errno;
 576
 577               if (result != 0)
 578                 break;
 579
 580               translate_endian((void *) &tv, sizeof(tv));
 581               if ((s.write_mem) (cb, &s, arg1, (char *) &tv, sizeof(tv))
 582                   != sizeof(tv))
 583                 {
 584                   result = -1;
 585                   errcode = EINVAL;
 586                 }
 587
 588               translate_endian((void *) &tz, sizeof(tz));
 589               if ((s.write_mem) (cb, &s, arg2, (char *) &tz, sizeof(tz))
 590                   != sizeof(tz))
 591                 {
 592                   result = -1;
 593                   errcode = EINVAL;
 594                 }
 595             }
 596             break;
 597
 598           case __NR_getgroups32:
 599           case __NR_getgroups:
 600             {
 601               gid_t *list;
 602
 603               if (arg1 > 0)
 604                 list = (gid_t *) malloc(arg1 * sizeof(gid_t));
 605
 606               result = getgroups(arg1, list);
 607               errcode = errno;
 608
 609               if (result != 0)
 610                 break;
 611
 612               translate_endian((void *) list, arg1 * sizeof(gid_t));
 613               if (arg1 > 0)
 614                 if ((s.write_mem) (cb, &s, arg2, (char *) list, arg1 * sizeof(gid_t))
 615                     != arg1 * sizeof(gid_t))
 616                   {
 617                     result = -1;
 618                      errcode = EINVAL;
 619                   }
 620             }
 621             break;
 622
 623           case __NR_select:
 624             {
 625               int n;
 626               fd_set readfds;
 627               fd_set *treadfdsp;
 628               fd_set *hreadfdsp;
 629               fd_set writefds;
 630               fd_set *twritefdsp;
 631               fd_set *hwritefdsp;
 632               fd_set exceptfds;
 633               fd_set *texceptfdsp;
 634               fd_set *hexceptfdsp;
 635               struct timeval *ttimeoutp;
 636               struct timeval timeout;
 637
 638               n = arg1;
 639
 640               treadfdsp = (fd_set *) arg2;
 641               if (treadfdsp != NULL)
 642                 {
 643                   readfds = *((fd_set *) t2h_addr(cb, &s, (unsigned int) treadfdsp));
 644                   translate_endian((void *) &readfds, sizeof(readfds));
 645                   hreadfdsp = &readfds;
 646                 }
 647               else
 648                 hreadfdsp = NULL;
 649
 650               twritefdsp  = (fd_set *) arg3;
 651               if (twritefdsp != NULL)
 652                 {
 653                   writefds = *((fd_set *) t2h_addr(cb, &s, (unsigned int) twritefdsp));
 654                   translate_endian((void *) &writefds, sizeof(writefds));
 655                   hwritefdsp = &writefds;
 656                 }
 657               else
 658                 hwritefdsp = NULL;
 659
 660               texceptfdsp = (fd_set *) arg4;
 661               if (texceptfdsp != NULL)
 662                 {
 663                   exceptfds = *((fd_set *) t2h_addr(cb, &s, (unsigned int) texceptfdsp));
 664                   translate_endian((void *) &exceptfds, sizeof(exceptfds));
 665                   hexceptfdsp = &exceptfds;
 666                 }
 667               else
 668                 hexceptfdsp = NULL;
 669
 670               ttimeoutp = (struct timeval *) arg5;
 671               timeout = *((struct timeval *) t2h_addr(cb, &s, (unsigned int) ttimeoutp));
 672               translate_endian((void *) &timeout, sizeof(timeout));
 673
 674               result = select(n, hreadfdsp, hwritefdsp, hexceptfdsp, &timeout);
 675               errcode = errno;
 676
 677               if (result != 0)
 678                 break;
 679
 680               if (treadfdsp != NULL)
 681                 {
 682                   translate_endian((void *) &readfds, sizeof(readfds));
 683                   if ((s.write_mem) (cb, &s, (unsigned long) treadfdsp,
 684                        (char *) &readfds, sizeof(readfds)) != sizeof(readfds))
 685                     {
 686                       result = -1;
 687                       errcode = EINVAL;
 688                     }
 689                 }
 690
 691               if (twritefdsp != NULL)
 692                 {
 693                   translate_endian((void *) &writefds, sizeof(writefds));
 694                   if ((s.write_mem) (cb, &s, (unsigned long) twritefdsp,
 695                        (char *) &writefds, sizeof(writefds)) != sizeof(writefds))
 696                     {
 697                       result = -1;
 698                       errcode = EINVAL;
 699                     }
 700                 }
 701
 702               if (texceptfdsp != NULL)
 703                 {
 704                   translate_endian((void *) &exceptfds, sizeof(exceptfds));
 705                   if ((s.write_mem) (cb, &s, (unsigned long) texceptfdsp,
 706                        (char *) &exceptfds, sizeof(exceptfds)) != sizeof(exceptfds))
 707                     {
 708                       result = -1;
 709                       errcode = EINVAL;
 710                     }
 711                 }
 712
 713               translate_endian((void *) &timeout, sizeof(timeout));
 714               if ((s.write_mem) (cb, &s, (unsigned long) ttimeoutp,
 715                    (char *) &timeout, sizeof(timeout)) != sizeof(timeout))
 716                 {
 717                   result = -1;
 718                   errcode = EINVAL;
 719                 }
 720             }
 721             break;
 722
 723           case __NR_symlink:
 724             result = symlink((char *) t2h_addr(cb, &s, arg1),
 725                              (char *) t2h_addr(cb, &s, arg2));
 726             errcode = errno;
 727             break;
 728
 729           case __NR_readlink:
 730             result = readlink((char *) t2h_addr(cb, &s, arg1),
 731                               (char *) t2h_addr(cb, &s, arg2),
 732                               arg3);
 733             errcode = errno;
 734             break;
 735
 736           case __NR_readdir:
 737             result = (int) readdir((DIR *) t2h_addr(cb, &s, arg1));
 738             errcode = errno;
 739             break;
 740
 741 #if 0
 742           case __NR_mmap:
 743             {
 744               result = (int) mmap((void *) t2h_addr(cb, &s, arg1),
 745                                   arg2, arg3, arg4, arg5, arg6);
 746               errcode = errno;
 747
 748               if (errno == 0)
 749                 {
 750                   sim_core_attach (sd, NULL,
 751                                    0, access_read_write_exec, 0,
 752                                    result, arg2, 0, NULL, NULL);
 753                 }
 754             }
 755             break;
 756 #endif
 757           case __NR_mmap2:
 758             {
 759               void *addr;
 760               size_t len;
 761               int prot, flags, fildes;
 762               off_t off;
 763
 764               addr   = (void *)  t2h_addr(cb, &s, arg1);
 765               len    = arg2;
 766               prot   = arg3;
 767               flags  = arg4;
 768               fildes = arg5;
 769               off    = arg6 << 12;
 770
 771               result = (int) mmap(addr, len, prot, flags, fildes, off);
 772               errcode = errno;
 773               if (result != -1)
 774                 {
 775                   char c;
 776                   if (sim_core_read_buffer (sd, NULL, read_map, &c, result, 1) == 0)
 777                     sim_core_attach (sd, NULL,
 778                                      0, access_read_write_exec, 0,
 779                                      result, len, 0, NULL, NULL);
 780                 }
 781             }
 782             break;
 783
 784           case __NR_mmap:
 785             {
 786               void *addr;
 787               size_t len;
 788               int prot, flags, fildes;
 789               off_t off;
 790
 791               addr   = *((void **)  t2h_addr(cb, &s, arg1));
 792               len    = *((size_t *) t2h_addr(cb, &s, arg1 + 4));
 793               prot   = *((int *)    t2h_addr(cb, &s, arg1 + 8));
 794               flags  = *((int *)    t2h_addr(cb, &s, arg1 + 12));
 795               fildes = *((int *)    t2h_addr(cb, &s, arg1 + 16));
 796               off    = *((off_t *)  t2h_addr(cb, &s, arg1 + 20));
 797
 798               addr   = (void *) conv_endian((unsigned int) addr);
 799               len    = conv_endian(len);
 800               prot   = conv_endian(prot);
 801               flags  = conv_endian(flags);
 802               fildes = conv_endian(fildes);
 803               off    = conv_endian(off);
 804
 805               //addr   = (void *) t2h_addr(cb, &s, (unsigned int) addr);
 806               result = (int) mmap(addr, len, prot, flags, fildes, off);
 807               errcode = errno;
 808
 809               //if (errno == 0)
 810               if (result != -1)
 811                 {
 812                   char c;
 813                   if (sim_core_read_buffer (sd, NULL, read_map, &c, result, 1) == 0)
 814                     sim_core_attach (sd, NULL,
 815                                      0, access_read_write_exec, 0,
 816                                      result, len, 0, NULL, NULL);
 817                 }
 818             }
 819             break;
 820
 821           case __NR_munmap:
 822             {
 823             result = munmap((void *)arg1, arg2);
 824             errcode = errno;
 825             if (result != -1)
 826               {
 827                 sim_core_detach (sd, NULL, 0, arg2, result);
 828               }
 829             }
 830             break;
 831
 832           case __NR_truncate:
 833             result = truncate((char *) t2h_addr(cb, &s, arg1), arg2);
 834             errcode = errno;
 835             break;
 836
 837           case __NR_ftruncate:
 838             result = ftruncate(arg1, arg2);
 839             errcode = errno;
 840             break;
 841
 842           case __NR_fchmod:
 843             result = fchmod(arg1, arg2);
 844             errcode = errno;
 845             break;
 846
 847           case __NR_fchown32:
 848           case __NR_fchown:
 849             result = fchown(arg1, arg2, arg3);
 850             errcode = errno;
 851             break;
 852
 853           case __NR_statfs:
 854             {
 855               struct statfs statbuf;
 856
 857               result = statfs((char *) t2h_addr(cb, &s, arg1), &statbuf);
 858               errcode = errno;
 859
 860               if (result != 0)
 861                 break;
 862
 863               translate_endian((void *) &statbuf, sizeof(statbuf));
 864               if ((s.write_mem) (cb, &s, arg2, (char *) &statbuf, sizeof(statbuf))
 865                   != sizeof(statbuf))
 866                 {
 867                   result = -1;
 868                   errcode = EINVAL;
 869                 }
 870             }
 871             break;
 872
 873           case __NR_fstatfs:
 874             {
 875               struct statfs statbuf;
 876
 877               result = fstatfs(arg1, &statbuf);
 878               errcode = errno;
 879
 880               if (result != 0)
 881                 break;
 882
 883               translate_endian((void *) &statbuf, sizeof(statbuf));
 884               if ((s.write_mem) (cb, &s, arg2, (char *) &statbuf, sizeof(statbuf))
 885                   != sizeof(statbuf))
 886                 {
 887                   result = -1;
 888                   errcode = EINVAL;
 889                 }
 890             }
 891             break;
 892
 893           case __NR_syslog:
 894             result = syslog(arg1, (char *) t2h_addr(cb, &s, arg2));
 895             errcode = errno;
 896             break;
 897
 898           case __NR_setitimer:
 899             {
 900               struct itimerval value, ovalue;
 901
 902               value = *((struct itimerval *) t2h_addr(cb, &s, arg2));
 903               translate_endian((void *) &value, sizeof(value));
 904
 905               if (arg2 == 0)
 906                 {
 907                   result = setitimer(arg1, &value, NULL);
 908                   errcode = errno;
 909                 }
 910               else
 911                 {
 912                   result = setitimer(arg1, &value, &ovalue);
 913                   errcode = errno;
 914
 915                   if (result != 0)
 916                     break;
 917
 918                   translate_endian((void *) &ovalue, sizeof(ovalue));
 919                   if ((s.write_mem) (cb, &s, arg3, (char *) &ovalue, sizeof(ovalue))
 920                       != sizeof(ovalue))
 921                     {
 922                       result = -1;
 923                       errcode = EINVAL;
 924                     }
 925                 }
 926             }
 927             break;
 928
 929           case __NR_getitimer:
 930             {
 931               struct itimerval value;
 932
 933               result = getitimer(arg1, &value);
 934               errcode = errno;
 935
 936               if (result != 0)
 937                 break;
 938
 939               translate_endian((void *) &value, sizeof(value));
 940               if ((s.write_mem) (cb, &s, arg2, (char *) &value, sizeof(value))
 941                   != sizeof(value))
 942                 {
 943                   result = -1;
 944                   errcode = EINVAL;
 945                 }
 946             }
 947             break;
 948
 949           case __NR_stat:
 950             {
 951               char *buf;
 952               int buflen;
 953               struct stat statbuf;
 954
 955               result = stat((char *) t2h_addr(cb, &s, arg1), &statbuf);
 956               errcode = errno;
 957               if (result < 0)
 958                 break;
 959
 960               buflen = cb_host_to_target_stat (cb, NULL, NULL);
 961               buf = xmalloc (buflen);
 962               if (cb_host_to_target_stat (cb, &statbuf, buf) != buflen)
 963                 {
 964                   /* The translation failed.  This is due to an internal
 965                      host program error, not the target's fault.  */
 966                   free (buf);
 967                   result = -1;
 968                   errcode = ENOSYS;
 969                   break;
 970                 }
 971               if ((s.write_mem) (cb, &s, arg2, buf, buflen) != buflen)
 972                 {
 973                   free (buf);
 974                   result = -1;
 975                   errcode = EINVAL;
 976                   break;
 977                 }
 978               free (buf);
 979             }
 980             break;
 981
 982           case __NR_lstat:
 983             {
 984               char *buf;
 985               int buflen;
 986               struct stat statbuf;
 987
 988               result = lstat((char *) t2h_addr(cb, &s, arg1), &statbuf);
 989               errcode = errno;
 990               if (result < 0)
 991                 break;
 992
 993               buflen = cb_host_to_target_stat (cb, NULL, NULL);
 994               buf = xmalloc (buflen);
 995               if (cb_host_to_target_stat (cb, &statbuf, buf) != buflen)
 996                 {
 997                   /* The translation failed.  This is due to an internal
 998                      host program error, not the target's fault.  */
 999                   free (buf);
1000                   result = -1;
1001                   errcode = ENOSYS;
1002                   break;
1003                 }
1004               if ((s.write_mem) (cb, &s, arg2, buf, buflen) != buflen)
1005                 {
1006                   free (buf);
1007                   result = -1;
1008                   errcode = EINVAL;
1009                   break;
1010                 }
1011               free (buf);
1012             }
1013             break;
1014
1015           case __NR_fstat:
1016             {
1017               char *buf;
1018               int buflen;
1019               struct stat statbuf;
1020
1021               result = fstat(arg1, &statbuf);
1022               errcode = errno;
1023               if (result < 0)
1024                 break;
1025
1026               buflen = cb_host_to_target_stat (cb, NULL, NULL);
1027               buf = xmalloc (buflen);
1028               if (cb_host_to_target_stat (cb, &statbuf, buf) != buflen)
1029                 {
1030                   /* The translation failed.  This is due to an internal
1031                      host program error, not the target's fault.  */
1032                   free (buf);
1033                   result = -1;
1034                   errcode = ENOSYS;
1035                   break;
1036                 }
1037               if ((s.write_mem) (cb, &s, arg2, buf, buflen) != buflen)
1038                 {
1039                   free (buf);
1040                   result = -1;
1041                   errcode = EINVAL;
1042                   break;
1043                 }
1044               free (buf);
1045             }
1046             break;
1047
1048           case __NR_sysinfo:
1049             {
1050               struct sysinfo info;
1051
1052               result = sysinfo(&info);
1053               errcode = errno;
1054
1055               if (result != 0)
1056                 break;
1057
1058               info.uptime    = conv_endian(info.uptime);
1059               info.loads[0]  = conv_endian(info.loads[0]);
1060               info.loads[1]  = conv_endian(info.loads[1]);
1061               info.loads[2]  = conv_endian(info.loads[2]);
1062               info.totalram  = conv_endian(info.totalram);
1063               info.freeram   = conv_endian(info.freeram);
1064               info.sharedram = conv_endian(info.sharedram);
1065               info.bufferram = conv_endian(info.bufferram);
1066               info.totalswap = conv_endian(info.totalswap);
1067               info.freeswap  = conv_endian(info.freeswap);
1068               info.procs     = conv_endian16(info.procs);
1069 #if LINUX_VERSION_CODE >= 0x20400
1070               info.totalhigh = conv_endian(info.totalhigh);
1071               info.freehigh  = conv_endian(info.freehigh);
1072               info.mem_unit  = conv_endian(info.mem_unit);
1073 #endif
1074               if ((s.write_mem) (cb, &s, arg1, (char *) &info, sizeof(info))
1075                   != sizeof(info))
1076                 {
1077                   result = -1;
1078                   errcode = EINVAL;
1079                 }
1080             }
1081             break;
1082
1083 #if 0
1084           case __NR_ipc:
1085             {
1086               result = ipc(arg1, arg2, arg3, arg4,
1087                            (void *) t2h_addr(cb, &s, arg5), arg6);
1088               errcode = errno;
1089             }
1090             break;
1091 #endif
1092
1093           case __NR_fsync:
1094             result = fsync(arg1);
1095             errcode = errno;
1096             break;
1097
1098           case __NR_uname:
1099             /* utsname contains only arrays of char, so it is not necessary
1100                to translate endian. */
1101             result = uname((struct utsname *) t2h_addr(cb, &s, arg1));
1102             errcode = errno;
1103             break;
1104
1105           case __NR_adjtimex:
1106             {
1107               struct timex buf;
1108
1109               result = adjtimex(&buf);
1110               errcode = errno;
1111
1112               if (result != 0)
1113                 break;
1114
1115               translate_endian((void *) &buf, sizeof(buf));
1116               if ((s.write_mem) (cb, &s, arg1, (char *) &buf, sizeof(buf))
1117                   != sizeof(buf))
1118                 {
1119                   result = -1;
1120                   errcode = EINVAL;
1121                 }
1122             }
1123             break;
1124
1125           case __NR_mprotect:
1126             result = mprotect((void *) arg1, arg2, arg3);
1127             errcode = errno;
1128             break;
1129
1130           case __NR_fchdir:
1131             result = fchdir(arg1);
1132             errcode = errno;
1133             break;
1134
1135           case __NR_setfsuid32:
1136           case __NR_setfsuid:
1137             result = setfsuid(arg1);
1138             errcode = errno;
1139             break;
1140
1141           case __NR_setfsgid32:
1142           case __NR_setfsgid:
1143             result = setfsgid(arg1);
1144             errcode = errno;
1145             break;
1146
1147 #if 0
1148           case __NR__llseek:
1149             {
1150               loff_t buf;
1151
1152               result = _llseek(arg1, arg2, arg3, &buf, arg5);
1153               errcode = errno;
1154
1155               if (result != 0)
1156                 break;
1157
1158               translate_endian((void *) &buf, sizeof(buf));
1159               if ((s.write_mem) (cb, &s, t2h_addr(cb, &s, arg4),
1160                                  (char *) &buf, sizeof(buf)) != sizeof(buf))
1161                 {
1162                   result = -1;
1163                   errcode = EINVAL;
1164                 }
1165             }
1166             break;
1167
1168           case __NR_getdents:
1169             {
1170               struct dirent dir;
1171
1172               result = getdents(arg1, &dir, arg3);
1173               errcode = errno;
1174
1175               if (result != 0)
1176                 break;
1177
1178               dir.d_ino = conv_endian(dir.d_ino);
1179               dir.d_off = conv_endian(dir.d_off);
1180               dir.d_reclen = conv_endian16(dir.d_reclen);
1181               if ((s.write_mem) (cb, &s, arg2, (char *) &dir, sizeof(dir))
1182                   != sizeof(dir))
1183                 {
1184                   result = -1;
1185                   errcode = EINVAL;
1186                 }
1187             }
1188             break;
1189 #endif
1190
1191           case __NR_flock:
1192             result = flock(arg1, arg2);
1193             errcode = errno;
1194             break;
1195
1196           case __NR_msync:
1197             result = msync((void *) arg1, arg2, arg3);
1198             errcode = errno;
1199             break;
1200
1201           case __NR_readv:
1202             {
1203               struct iovec vector;
1204
1205               vector = *((struct iovec *) t2h_addr(cb, &s, arg2));
1206               translate_endian((void *) &vector, sizeof(vector));
1207
1208               result = readv(arg1, &vector, arg3);
1209               errcode = errno;
1210             }
1211             break;
1212
1213           case __NR_writev:
1214             {
1215               struct iovec vector;
1216
1217               vector = *((struct iovec *) t2h_addr(cb, &s, arg2));
1218               translate_endian((void *) &vector, sizeof(vector));
1219
1220               result = writev(arg1, &vector, arg3);
1221               errcode = errno;
1222             }
1223             break;
1224
1225           case __NR_fdatasync:
1226             result = fdatasync(arg1);
1227             errcode = errno;
1228             break;
1229
1230           case __NR_mlock:
1231             result = mlock((void *) t2h_addr(cb, &s, arg1), arg2);
1232             errcode = errno;
1233             break;
1234
1235           case __NR_munlock:
1236             result = munlock((void *) t2h_addr(cb, &s, arg1), arg2);
1237             errcode = errno;
1238             break;
1239
1240           case __NR_nanosleep:
1241             {
1242               struct timespec req, rem;
1243
1244               req = *((struct timespec *) t2h_addr(cb, &s, arg2));
1245               translate_endian((void *) &req, sizeof(req));
1246
1247               result = nanosleep(&req, &rem);
1248               errcode = errno;
1249
1250               if (result != 0)
1251                 break;
1252
1253               translate_endian((void *) &rem, sizeof(rem));
1254               if ((s.write_mem) (cb, &s, arg2, (char *) &rem, sizeof(rem))
1255                   != sizeof(rem))
1256                 {
1257                   result = -1;
1258                   errcode = EINVAL;
1259                 }
1260             }
1261             break;
1262
1263           case __NR_mremap: /* FIXME */
1264             result = (int) mremap((void *) t2h_addr(cb, &s, arg1), arg2, arg3, arg4);
1265             errcode = errno;
1266             break;
1267
1268           case __NR_getresuid32:
1269           case __NR_getresuid:
1270             {
1271               uid_t ruid, euid, suid;
1272
1273               result = getresuid(&ruid, &euid, &suid);
1274               errcode = errno;
1275
1276               if (result != 0)
1277                 break;
1278
1279               *((uid_t *) t2h_addr(cb, &s, arg1)) = conv_endian(ruid);
1280               *((uid_t *) t2h_addr(cb, &s, arg2)) = conv_endian(euid);
1281               *((uid_t *) t2h_addr(cb, &s, arg3)) = conv_endian(suid);
1282             }
1283             break;
1284
1285           case __NR_poll:
1286             {
1287               struct pollfd ufds;
1288
1289               ufds = *((struct pollfd *) t2h_addr(cb, &s, arg1));
1290               ufds.fd = conv_endian(ufds.fd);
1291               ufds.events = conv_endian16(ufds.events);
1292               ufds.revents = conv_endian16(ufds.revents);
1293
1294               result = poll(&ufds, arg2, arg3);
1295               errcode = errno;
1296             }
1297             break;
1298
1299           case __NR_getresgid32:
1300           case __NR_getresgid:
1301             {
1302               uid_t rgid, egid, sgid;
1303
1304               result = getresgid(&rgid, &egid, &sgid);
1305               errcode = errno;
1306
1307               if (result != 0)
1308                 break;
1309
1310               *((uid_t *) t2h_addr(cb, &s, arg1)) = conv_endian(rgid);
1311               *((uid_t *) t2h_addr(cb, &s, arg2)) = conv_endian(egid);
1312               *((uid_t *) t2h_addr(cb, &s, arg3)) = conv_endian(sgid);
1313             }
1314             break;
1315
1316           case __NR_pread:
1317             result =  pread(arg1, (void *) t2h_addr(cb, &s, arg2), arg3, arg4);
1318             errcode = errno;
1319             break;
1320
1321           case __NR_pwrite:
1322             result =  pwrite(arg1, (void *) t2h_addr(cb, &s, arg2), arg3, arg4);
1323             errcode = errno;
1324             break;
1325
1326           case __NR_chown32:
1327           case __NR_chown:
1328             result = chown((char *) t2h_addr(cb, &s, arg1), arg2, arg3);
1329             errcode = errno;
1330             break;
1331
1332           case __NR_getcwd:
1333             result = (int) getcwd((char *) t2h_addr(cb, &s, arg1), arg2);
1334             errcode = errno;
1335             break;
1336
1337           case __NR_sendfile:
1338             {
1339               off_t offset;
1340
1341               offset = *((off_t *) t2h_addr(cb, &s, arg3));
1342               offset = conv_endian(offset);
1343
1344               result = sendfile(arg1, arg2, &offset, arg3);
1345               errcode = errno;
1346
1347               if (result != 0)
1348                 break;
1349
1350               *((off_t *) t2h_addr(cb, &s, arg3)) = conv_endian(offset);
1351             }
1352             break;
1353
1354           default:
1355             result = -1;
1356             errcode = ENOSYS;
1357             break;
1358           }
1359
1360         if (result == -1)
1361           m32rbf_h_gr_set (current_cpu, 0, -errcode);
1362         else
1363           m32rbf_h_gr_set (current_cpu, 0, result);
1364         break;
1365       }
1366
1367     case TRAP_BREAKPOINT:
1368       sim_engine_halt (sd, current_cpu, NULL, pc,
1369                        sim_stopped, SIM_SIGTRAP);
1370       break;
1371
1372     case TRAP_FLUSH_CACHE:
1373       /* Do nothing.  */
1374       break;
1375
1376     default :
1377       {
1378         /* Use cr5 as EVB (EIT Vector Base) register.  */
1379         USI new_pc = m32rbf_h_cr_get (current_cpu, 5) + 0x40 + num * 4;
1380         return new_pc;
1381       }
1382     }
1383
1384   /* Fake an "rte" insn.  */
1385   /* FIXME: Should duplicate all of rte processing.  */
1386   return (pc & -4) + 4;
1387 }