sim/m32r/traps-linux.c

   1 /* m32r exception, interrupt, and trap (EIT) support
   2    Copyright (C) 1998-2015 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 "sim-syscall.h"
  22 #include "syscall.h"
  23 #include "targ-vals.h"
  24 #include <dirent.h>
  25 #include <errno.h>
  26 #include <fcntl.h>
  27 #include <time.h>
  28 #include <unistd.h>
  29 #include <utime.h>
  30 #include <sys/mman.h>
  31 #include <sys/poll.h>
  32 #include <sys/resource.h>
  33 #include <sys/sysinfo.h>
  34 #include <sys/stat.h>
  35 #include <sys/time.h>
  36 #include <sys/timeb.h>
  37 #include <sys/timex.h>
  38 #include <sys/types.h>
  39 #include <sys/uio.h>
  40 #include <sys/utsname.h>
  41 #include <sys/vfs.h>
  42 #include <linux/sysctl.h>
  43 #include <linux/types.h>
  44 #include <linux/unistd.h>
  45
  46 #define TRAP_ELF_SYSCALL 0
  47 #define TRAP_LINUX_SYSCALL 2
  48 #define TRAP_FLUSH_CACHE 12
  49
  50 /* The semantic code invokes this for invalid (unrecognized) instructions.  */
  51
  52 SEM_PC
  53 sim_engine_invalid_insn (SIM_CPU *current_cpu, IADDR cia, SEM_PC vpc)
  54 {
  55   SIM_DESC sd = CPU_STATE (current_cpu);
  56
  57 #if 0
  58   if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)
  59     {
  60       h_bsm_set (current_cpu, h_sm_get (current_cpu));
  61       h_bie_set (current_cpu, h_ie_get (current_cpu));
  62       h_bcond_set (current_cpu, h_cond_get (current_cpu));
  63       /* sm not changed */
  64       h_ie_set (current_cpu, 0);
  65       h_cond_set (current_cpu, 0);
  66
  67       h_bpc_set (current_cpu, cia);
  68
  69       sim_engine_restart (CPU_STATE (current_cpu), current_cpu, NULL,
  70                           EIT_RSVD_INSN_ADDR);
  71     }
  72   else
  73 #endif
  74     sim_engine_halt (sd, current_cpu, NULL, cia, sim_stopped, SIM_SIGILL);
  75   return vpc;
  76 }
  77
  78 /* Process an address exception.  */
  79
  80 void
  81 m32r_core_signal (SIM_DESC sd, SIM_CPU *current_cpu, sim_cia cia,
  82                   unsigned int map, int nr_bytes, address_word addr,
  83                   transfer_type transfer, sim_core_signals sig)
  84 {
  85   if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)
  86     {
  87       m32rbf_h_cr_set (current_cpu, H_CR_BBPC,
  88                        m32rbf_h_cr_get (current_cpu, H_CR_BPC));
  89       if (MACH_NUM (CPU_MACH (current_cpu)) == MACH_M32R)
  90         {
  91           m32rbf_h_bpsw_set (current_cpu, m32rbf_h_psw_get (current_cpu));
  92           /* sm not changed */
  93           m32rbf_h_psw_set (current_cpu, m32rbf_h_psw_get (current_cpu) & 0x80);
  94         }
  95       else if (MACH_NUM (CPU_MACH (current_cpu)) == MACH_M32RX)
  96         {
  97           m32rxf_h_bpsw_set (current_cpu, m32rxf_h_psw_get (current_cpu));
  98           /* sm not changed */
  99           m32rxf_h_psw_set (current_cpu, m32rxf_h_psw_get (current_cpu) & 0x80);
 100         }
 101       else
 102         {
 103           m32r2f_h_bpsw_set (current_cpu, m32r2f_h_psw_get (current_cpu));
 104           /* sm not changed */
 105           m32r2f_h_psw_set (current_cpu, m32r2f_h_psw_get (current_cpu) & 0x80);
 106         }
 107       m32rbf_h_cr_set (current_cpu, H_CR_BPC, cia);
 108
 109       sim_engine_restart (CPU_STATE (current_cpu), current_cpu, NULL,
 110                           EIT_ADDR_EXCP_ADDR);
 111     }
 112   else
 113     sim_core_signal (sd, current_cpu, cia, map, nr_bytes, addr,
 114                      transfer, sig);
 115 }
 116 \f
 117 /* Translate target's address to host's address.  */
 118
 119 static void *
 120 t2h_addr (host_callback *cb, struct cb_syscall *sc,
 121           unsigned long taddr)
 122 {
 123   void *addr;
 124   SIM_DESC sd = (SIM_DESC) sc->p1;
 125   SIM_CPU *cpu = (SIM_CPU *) sc->p2;
 126
 127   if (taddr == 0)
 128     return NULL;
 129
 130   return sim_core_trans_addr (sd, cpu, read_map, taddr);
 131 }
 132
 133 static unsigned int
 134 conv_endian (unsigned int tvalue)
 135 {
 136   unsigned int hvalue;
 137   unsigned int t1, t2, t3, t4;
 138
 139   if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN)
 140     {
 141       t1 = tvalue & 0xff000000;
 142       t2 = tvalue & 0x00ff0000;
 143       t3 = tvalue & 0x0000ff00;
 144       t4 = tvalue & 0x000000ff;
 145
 146       hvalue =  t1 >> 24;
 147       hvalue += t2 >> 8;
 148       hvalue += t3 << 8;
 149       hvalue += t4 << 24;
 150     }
 151   else
 152     hvalue = tvalue;
 153
 154   return hvalue;
 155 }
 156
 157 static unsigned short
 158 conv_endian16 (unsigned short tvalue)
 159 {
 160   unsigned short hvalue;
 161   unsigned short t1, t2;
 162
 163   if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN)
 164     {
 165       t1 = tvalue & 0xff00;
 166       t2 = tvalue & 0x00ff;
 167
 168       hvalue =  t1 >> 8;
 169       hvalue += t2 << 8;
 170     }
 171   else
 172     hvalue = tvalue;
 173
 174   return hvalue;
 175 }
 176
 177 static void
 178 translate_endian(void *addr, size_t size)
 179 {
 180   unsigned int *p = (unsigned int *) addr;
 181   int i;
 182
 183   for (i = 0; i <= size - 4; i += 4,p++)
 184     *p = conv_endian(*p);
 185
 186   if (i <= size - 2)
 187     *((unsigned short *) p) = conv_endian16(*((unsigned short *) p));
 188 }
 189
 190 /* Trap support.
 191    The result is the pc address to continue at.
 192    Preprocessing like saving the various registers has already been done.  */
 193
 194 USI
 195 m32r_trap (SIM_CPU *current_cpu, PCADDR pc, int num)
 196 {
 197   SIM_DESC sd = CPU_STATE (current_cpu);
 198   host_callback *cb = STATE_CALLBACK (sd);
 199
 200   switch (num)
 201     {
 202     case TRAP_ELF_SYSCALL :
 203       {
 204         long result, result2;
 205         int errcode;
 206
 207         sim_syscall_multi (current_cpu,
 208                            m32rbf_h_gr_get (current_cpu, 0),
 209                            m32rbf_h_gr_get (current_cpu, 1),
 210                            m32rbf_h_gr_get (current_cpu, 2),
 211                            m32rbf_h_gr_get (current_cpu, 3),
 212                            m32rbf_h_gr_get (current_cpu, 4),
 213                            &result, &result2, &errcode);
 214
 215         m32rbf_h_gr_set (current_cpu, 2, errcode);
 216         m32rbf_h_gr_set (current_cpu, 0, result);
 217         m32rbf_h_gr_set (current_cpu, 1, result2);
 218         break;
 219       }
 220
 221     case TRAP_LINUX_SYSCALL :
 222       {
 223         CB_SYSCALL s;
 224         unsigned int func, arg1, arg2, arg3, arg4, arg5, arg6, arg7;
 225         int result, result2, errcode;
 226
 227         if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)
 228           {
 229             /* The new pc is the trap vector entry.
 230                We assume there's a branch there to some handler.
 231                Use cr5 as EVB (EIT Vector Base) register.  */
 232             USI new_pc = m32rbf_h_cr_get (current_cpu, 5) + 0x40 + num * 4;
 233             return new_pc;
 234           }
 235
 236         func = m32rbf_h_gr_get (current_cpu, 7);
 237         arg1 = m32rbf_h_gr_get (current_cpu, 0);
 238         arg2 = m32rbf_h_gr_get (current_cpu, 1);
 239         arg3 = m32rbf_h_gr_get (current_cpu, 2);
 240         arg4 = m32rbf_h_gr_get (current_cpu, 3);
 241         arg5 = m32rbf_h_gr_get (current_cpu, 4);
 242         arg6 = m32rbf_h_gr_get (current_cpu, 5);
 243         arg7 = m32rbf_h_gr_get (current_cpu, 6);
 244
 245         CB_SYSCALL_INIT (&s);
 246         s.func = func;
 247         s.arg1 = arg1;
 248         s.arg2 = arg2;
 249         s.arg3 = arg3;
 250
 251         s.p1 = (PTR) sd;
 252         s.p2 = (PTR) current_cpu;
 253         s.read_mem = sim_syscall_read_mem;
 254         s.write_mem = sim_syscall_write_mem;
 255
 256         result = 0;
 257         result2 = 0;
 258         errcode = 0;
 259
 260         switch (func)
 261           {
 262           case __NR_exit:
 263             sim_engine_halt (sd, current_cpu, NULL, pc, sim_exited, arg1);
 264             break;
 265
 266           case __NR_read:
 267             result = read(arg1, t2h_addr(cb, &s, arg2), arg3);
 268             errcode = errno;
 269             break;
 270
 271           case __NR_write:
 272             result = write(arg1, t2h_addr(cb, &s, arg2), arg3);
 273             errcode = errno;
 274             break;
 275
 276           case __NR_open:
 277             result = open((char *) t2h_addr(cb, &s, arg1), arg2, arg3);
 278             errcode = errno;
 279             break;
 280
 281           case __NR_close:
 282             result = close(arg1);
 283             errcode = errno;
 284             break;
 285
 286           case __NR_creat:
 287             result = creat((char *) t2h_addr(cb, &s, arg1), arg2);
 288             errcode = errno;
 289             break;
 290
 291           case __NR_link:
 292             result = link((char *) t2h_addr(cb, &s, arg1),
 293                           (char *) t2h_addr(cb, &s, arg2));
 294             errcode = errno;
 295             break;
 296
 297           case __NR_unlink:
 298             result = unlink((char *) t2h_addr(cb, &s, arg1));
 299             errcode = errno;
 300             break;
 301
 302           case __NR_chdir:
 303             result = chdir((char *) t2h_addr(cb, &s, arg1));
 304             errcode = errno;
 305             break;
 306
 307           case __NR_time:
 308             {
 309               time_t t;
 310
 311               if (arg1 == 0)
 312                 {
 313                   result = (int) time(NULL);
 314                   errcode = errno;
 315                 }
 316               else
 317                 {
 318                   result = (int) time(&t);
 319                   errcode = errno;
 320
 321                   if (result != 0)
 322                     break;
 323
 324                   translate_endian((void *) &t, sizeof(t));
 325                   if ((s.write_mem) (cb, &s, arg1, (char *) &t, sizeof(t)) != sizeof(t))
 326                     {
 327                       result = -1;
 328                       errcode = EINVAL;
 329                     }
 330                 }
 331             }
 332             break;
 333
 334           case __NR_mknod:
 335             result = mknod((char *) t2h_addr(cb, &s, arg1),
 336                            (mode_t) arg2, (dev_t) arg3);
 337             errcode = errno;
 338             break;
 339
 340           case __NR_chmod:
 341             result = chmod((char *) t2h_addr(cb, &s, arg1), (mode_t) arg2);
 342             errcode = errno;
 343             break;
 344
 345           case __NR_lchown32:
 346           case __NR_lchown:
 347             result = lchown((char *) t2h_addr(cb, &s, arg1),
 348                             (uid_t) arg2, (gid_t) arg3);
 349             errcode = errno;
 350             break;
 351
 352           case __NR_lseek:
 353             result = (int) lseek(arg1, (off_t) arg2, arg3);
 354             errcode = errno;
 355             break;
 356
 357           case __NR_getpid:
 358             result = getpid();
 359             errcode = errno;
 360             break;
 361
 362           case __NR_getuid32:
 363           case __NR_getuid:
 364             result = getuid();
 365             errcode = errno;
 366             break;
 367
 368           case __NR_utime:
 369             {
 370               struct utimbuf buf;
 371
 372               if (arg2 == 0)
 373                 {
 374                   result = utime((char *) t2h_addr(cb, &s, arg1), NULL);
 375                   errcode = errno;
 376                 }
 377               else
 378                 {
 379                   buf = *((struct utimbuf *) t2h_addr(cb, &s, arg2));
 380                   translate_endian((void *) &buf, sizeof(buf));
 381                   result = utime((char *) t2h_addr(cb, &s, arg1), &buf);
 382                   errcode = errno;
 383                 }
 384             }
 385             break;
 386
 387           case __NR_access:
 388             result = access((char *) t2h_addr(cb, &s, arg1), arg2);
 389             errcode = errno;
 390             break;
 391
 392           case __NR_ftime:
 393             {
 394               struct timeb t;
 395
 396               result = ftime(&t);
 397               errcode = errno;
 398
 399               if (result != 0)
 400                 break;
 401
 402               t.time = conv_endian(t.time);
 403               t.millitm = conv_endian16(t.millitm);
 404               t.timezone = conv_endian16(t.timezone);
 405               t.dstflag = conv_endian16(t.dstflag);
 406               if ((s.write_mem) (cb, &s, arg1, (char *) &t, sizeof(t))
 407                   != sizeof(t))
 408                 {
 409                   result = -1;
 410                   errcode = EINVAL;
 411                 }
 412             }
 413
 414           case __NR_sync:
 415             sync();
 416             result = 0;
 417             break;
 418
 419           case __NR_rename:
 420             result = rename((char *) t2h_addr(cb, &s, arg1),
 421                             (char *) t2h_addr(cb, &s, arg2));
 422             errcode = errno;
 423             break;
 424
 425           case __NR_mkdir:
 426             result = mkdir((char *) t2h_addr(cb, &s, arg1), arg2);
 427             errcode = errno;
 428             break;
 429
 430           case __NR_rmdir:
 431             result = rmdir((char *) t2h_addr(cb, &s, arg1));
 432             errcode = errno;
 433             break;
 434
 435           case __NR_dup:
 436             result = dup(arg1);
 437             errcode = errno;
 438             break;
 439
 440           case __NR_brk:
 441             result = brk((void *) arg1);
 442             errcode = errno;
 443             //result = arg1;
 444             break;
 445
 446           case __NR_getgid32:
 447           case __NR_getgid:
 448             result = getgid();
 449             errcode = errno;
 450             break;
 451
 452           case __NR_geteuid32:
 453           case __NR_geteuid:
 454             result = geteuid();
 455             errcode = errno;
 456             break;
 457
 458           case __NR_getegid32:
 459           case __NR_getegid:
 460             result = getegid();
 461             errcode = errno;
 462             break;
 463
 464           case __NR_ioctl:
 465             result = ioctl(arg1, arg2, arg3);
 466             errcode = errno;
 467             break;
 468
 469           case __NR_fcntl:
 470             result = fcntl(arg1, arg2, arg3);
 471             errcode = errno;
 472             break;
 473
 474           case __NR_dup2:
 475             result = dup2(arg1, arg2);
 476             errcode = errno;
 477             break;
 478
 479           case __NR_getppid:
 480             result = getppid();
 481             errcode = errno;
 482             break;
 483
 484           case __NR_getpgrp:
 485             result = getpgrp();
 486             errcode = errno;
 487             break;
 488
 489           case __NR_getrlimit:
 490             {
 491               struct rlimit rlim;
 492
 493               result = getrlimit(arg1, &rlim);
 494               errcode = errno;
 495
 496               if (result != 0)
 497                 break;
 498
 499               translate_endian((void *) &rlim, sizeof(rlim));
 500               if ((s.write_mem) (cb, &s, arg2, (char *) &rlim, sizeof(rlim))
 501                   != sizeof(rlim))
 502                 {
 503                   result = -1;
 504                   errcode = EINVAL;
 505                 }
 506             }
 507             break;
 508
 509           case __NR_getrusage:
 510             {
 511               struct rusage usage;
 512
 513               result = getrusage(arg1, &usage);
 514               errcode = errno;
 515
 516               if (result != 0)
 517                 break;
 518
 519               translate_endian((void *) &usage, sizeof(usage));
 520               if ((s.write_mem) (cb, &s, arg2, (char *) &usage, sizeof(usage))
 521                   != sizeof(usage))
 522                 {
 523                   result = -1;
 524                   errcode = EINVAL;
 525                 }
 526             }
 527             break;
 528
 529           case __NR_gettimeofday:
 530             {
 531               struct timeval tv;
 532               struct timezone tz;
 533
 534               result = gettimeofday(&tv, &tz);
 535               errcode = errno;
 536
 537               if (result != 0)
 538                 break;
 539
 540               translate_endian((void *) &tv, sizeof(tv));
 541               if ((s.write_mem) (cb, &s, arg1, (char *) &tv, sizeof(tv))
 542                   != sizeof(tv))
 543                 {
 544                   result = -1;
 545                   errcode = EINVAL;
 546                 }
 547
 548               translate_endian((void *) &tz, sizeof(tz));
 549               if ((s.write_mem) (cb, &s, arg2, (char *) &tz, sizeof(tz))
 550                   != sizeof(tz))
 551                 {
 552                   result = -1;
 553                   errcode = EINVAL;
 554                 }
 555             }
 556             break;
 557
 558           case __NR_getgroups32:
 559           case __NR_getgroups:
 560             {
 561               gid_t *list;
 562
 563               if (arg1 > 0)
 564                 list = (gid_t *) malloc(arg1 * sizeof(gid_t));
 565
 566               result = getgroups(arg1, list);
 567               errcode = errno;
 568
 569               if (result != 0)
 570                 break;
 571
 572               translate_endian((void *) list, arg1 * sizeof(gid_t));
 573               if (arg1 > 0)
 574                 if ((s.write_mem) (cb, &s, arg2, (char *) list, arg1 * sizeof(gid_t))
 575                     != arg1 * sizeof(gid_t))
 576                   {
 577                     result = -1;
 578                      errcode = EINVAL;
 579                   }
 580             }
 581             break;
 582
 583           case __NR_select:
 584             {
 585               int n;
 586               fd_set readfds;
 587               fd_set *treadfdsp;
 588               fd_set *hreadfdsp;
 589               fd_set writefds;
 590               fd_set *twritefdsp;
 591               fd_set *hwritefdsp;
 592               fd_set exceptfds;
 593               fd_set *texceptfdsp;
 594               fd_set *hexceptfdsp;
 595               struct timeval *ttimeoutp;
 596               struct timeval timeout;
 597
 598               n = arg1;
 599
 600               treadfdsp = (fd_set *) arg2;
 601               if (treadfdsp != NULL)
 602                 {
 603                   readfds = *((fd_set *) t2h_addr(cb, &s, (unsigned int) treadfdsp));
 604                   translate_endian((void *) &readfds, sizeof(readfds));
 605                   hreadfdsp = &readfds;
 606                 }
 607               else
 608                 hreadfdsp = NULL;
 609
 610               twritefdsp  = (fd_set *) arg3;
 611               if (twritefdsp != NULL)
 612                 {
 613                   writefds = *((fd_set *) t2h_addr(cb, &s, (unsigned int) twritefdsp));
 614                   translate_endian((void *) &writefds, sizeof(writefds));
 615                   hwritefdsp = &writefds;
 616                 }
 617               else
 618                 hwritefdsp = NULL;
 619
 620               texceptfdsp = (fd_set *) arg4;
 621               if (texceptfdsp != NULL)
 622                 {
 623                   exceptfds = *((fd_set *) t2h_addr(cb, &s, (unsigned int) texceptfdsp));
 624                   translate_endian((void *) &exceptfds, sizeof(exceptfds));
 625                   hexceptfdsp = &exceptfds;
 626                 }
 627               else
 628                 hexceptfdsp = NULL;
 629
 630               ttimeoutp = (struct timeval *) arg5;
 631               timeout = *((struct timeval *) t2h_addr(cb, &s, (unsigned int) ttimeoutp));
 632               translate_endian((void *) &timeout, sizeof(timeout));
 633
 634               result = select(n, hreadfdsp, hwritefdsp, hexceptfdsp, &timeout);
 635               errcode = errno;
 636
 637               if (result != 0)
 638                 break;
 639
 640               if (treadfdsp != NULL)
 641                 {
 642                   translate_endian((void *) &readfds, sizeof(readfds));
 643                   if ((s.write_mem) (cb, &s, (unsigned long) treadfdsp,
 644                        (char *) &readfds, sizeof(readfds)) != sizeof(readfds))
 645                     {
 646                       result = -1;
 647                       errcode = EINVAL;
 648                     }
 649                 }
 650
 651               if (twritefdsp != NULL)
 652                 {
 653                   translate_endian((void *) &writefds, sizeof(writefds));
 654                   if ((s.write_mem) (cb, &s, (unsigned long) twritefdsp,
 655                        (char *) &writefds, sizeof(writefds)) != sizeof(writefds))
 656                     {
 657                       result = -1;
 658                       errcode = EINVAL;
 659                     }
 660                 }
 661
 662               if (texceptfdsp != NULL)
 663                 {
 664                   translate_endian((void *) &exceptfds, sizeof(exceptfds));
 665                   if ((s.write_mem) (cb, &s, (unsigned long) texceptfdsp,
 666                        (char *) &exceptfds, sizeof(exceptfds)) != sizeof(exceptfds))
 667                     {
 668                       result = -1;
 669                       errcode = EINVAL;
 670                     }
 671                 }
 672
 673               translate_endian((void *) &timeout, sizeof(timeout));
 674               if ((s.write_mem) (cb, &s, (unsigned long) ttimeoutp,
 675                    (char *) &timeout, sizeof(timeout)) != sizeof(timeout))
 676                 {
 677                   result = -1;
 678                   errcode = EINVAL;
 679                 }
 680             }
 681             break;
 682
 683           case __NR_symlink:
 684             result = symlink((char *) t2h_addr(cb, &s, arg1),
 685                              (char *) t2h_addr(cb, &s, arg2));
 686             errcode = errno;
 687             break;
 688
 689           case __NR_readlink:
 690             result = readlink((char *) t2h_addr(cb, &s, arg1),
 691                               (char *) t2h_addr(cb, &s, arg2),
 692                               arg3);
 693             errcode = errno;
 694             break;
 695
 696           case __NR_readdir:
 697             result = (int) readdir((DIR *) t2h_addr(cb, &s, arg1));
 698             errcode = errno;
 699             break;
 700
 701 #if 0
 702           case __NR_mmap:
 703             {
 704               result = (int) mmap((void *) t2h_addr(cb, &s, arg1),
 705                                   arg2, arg3, arg4, arg5, arg6);
 706               errcode = errno;
 707
 708               if (errno == 0)
 709                 {
 710                   sim_core_attach (sd, NULL,
 711                                    0, access_read_write_exec, 0,
 712                                    result, arg2, 0, NULL, NULL);
 713                 }
 714             }
 715             break;
 716 #endif
 717           case __NR_mmap2:
 718             {
 719               void *addr;
 720               size_t len;
 721               int prot, flags, fildes;
 722               off_t off;
 723
 724               addr   = (void *)  t2h_addr(cb, &s, arg1);
 725               len    = arg2;
 726               prot   = arg3;
 727               flags  = arg4;
 728               fildes = arg5;
 729               off    = arg6 << 12;
 730
 731               result = (int) mmap(addr, len, prot, flags, fildes, off);
 732               errcode = errno;
 733               if (result != -1)
 734                 {
 735                   char c;
 736                   if (sim_core_read_buffer (sd, NULL, read_map, &c, result, 1) == 0)
 737                     sim_core_attach (sd, NULL,
 738                                      0, access_read_write_exec, 0,
 739                                      result, len, 0, NULL, NULL);
 740                 }
 741             }
 742             break;
 743
 744           case __NR_mmap:
 745             {
 746               void *addr;
 747               size_t len;
 748               int prot, flags, fildes;
 749               off_t off;
 750
 751               addr   = *((void **)  t2h_addr(cb, &s, arg1));
 752               len    = *((size_t *) t2h_addr(cb, &s, arg1 + 4));
 753               prot   = *((int *)    t2h_addr(cb, &s, arg1 + 8));
 754               flags  = *((int *)    t2h_addr(cb, &s, arg1 + 12));
 755               fildes = *((int *)    t2h_addr(cb, &s, arg1 + 16));
 756               off    = *((off_t *)  t2h_addr(cb, &s, arg1 + 20));
 757
 758               addr   = (void *) conv_endian((unsigned int) addr);
 759               len    = conv_endian(len);
 760               prot   = conv_endian(prot);
 761               flags  = conv_endian(flags);
 762               fildes = conv_endian(fildes);
 763               off    = conv_endian(off);
 764
 765               //addr   = (void *) t2h_addr(cb, &s, (unsigned int) addr);
 766               result = (int) mmap(addr, len, prot, flags, fildes, off);
 767               errcode = errno;
 768
 769               //if (errno == 0)
 770               if (result != -1)
 771                 {
 772                   char c;
 773                   if (sim_core_read_buffer (sd, NULL, read_map, &c, result, 1) == 0)
 774                     sim_core_attach (sd, NULL,
 775                                      0, access_read_write_exec, 0,
 776                                      result, len, 0, NULL, NULL);
 777                 }
 778             }
 779             break;
 780
 781           case __NR_munmap:
 782             {
 783             result = munmap((void *)arg1, arg2);
 784             errcode = errno;
 785             if (result != -1)
 786               {
 787                 sim_core_detach (sd, NULL, 0, arg2, result);
 788               }
 789             }
 790             break;
 791
 792           case __NR_truncate:
 793             result = truncate((char *) t2h_addr(cb, &s, arg1), arg2);
 794             errcode = errno;
 795             break;
 796
 797           case __NR_ftruncate:
 798             result = ftruncate(arg1, arg2);
 799             errcode = errno;
 800             break;
 801
 802           case __NR_fchmod:
 803             result = fchmod(arg1, arg2);
 804             errcode = errno;
 805             break;
 806
 807           case __NR_fchown32:
 808           case __NR_fchown:
 809             result = fchown(arg1, arg2, arg3);
 810             errcode = errno;
 811             break;
 812
 813           case __NR_statfs:
 814             {
 815               struct statfs statbuf;
 816
 817               result = statfs((char *) t2h_addr(cb, &s, arg1), &statbuf);
 818               errcode = errno;
 819
 820               if (result != 0)
 821                 break;
 822
 823               translate_endian((void *) &statbuf, sizeof(statbuf));
 824               if ((s.write_mem) (cb, &s, arg2, (char *) &statbuf, sizeof(statbuf))
 825                   != sizeof(statbuf))
 826                 {
 827                   result = -1;
 828                   errcode = EINVAL;
 829                 }
 830             }
 831             break;
 832
 833           case __NR_fstatfs:
 834             {
 835               struct statfs statbuf;
 836
 837               result = fstatfs(arg1, &statbuf);
 838               errcode = errno;
 839
 840               if (result != 0)
 841                 break;
 842
 843               translate_endian((void *) &statbuf, sizeof(statbuf));
 844               if ((s.write_mem) (cb, &s, arg2, (char *) &statbuf, sizeof(statbuf))
 845                   != sizeof(statbuf))
 846                 {
 847                   result = -1;
 848                   errcode = EINVAL;
 849                 }
 850             }
 851             break;
 852
 853           case __NR_syslog:
 854             result = syslog(arg1, (char *) t2h_addr(cb, &s, arg2));
 855             errcode = errno;
 856             break;
 857
 858           case __NR_setitimer:
 859             {
 860               struct itimerval value, ovalue;
 861
 862               value = *((struct itimerval *) t2h_addr(cb, &s, arg2));
 863               translate_endian((void *) &value, sizeof(value));
 864
 865               if (arg2 == 0)
 866                 {
 867                   result = setitimer(arg1, &value, NULL);
 868                   errcode = errno;
 869                 }
 870               else
 871                 {
 872                   result = setitimer(arg1, &value, &ovalue);
 873                   errcode = errno;
 874
 875                   if (result != 0)
 876                     break;
 877
 878                   translate_endian((void *) &ovalue, sizeof(ovalue));
 879                   if ((s.write_mem) (cb, &s, arg3, (char *) &ovalue, sizeof(ovalue))
 880                       != sizeof(ovalue))
 881                     {
 882                       result = -1;
 883                       errcode = EINVAL;
 884                     }
 885                 }
 886             }
 887             break;
 888
 889           case __NR_getitimer:
 890             {
 891               struct itimerval value;
 892
 893               result = getitimer(arg1, &value);
 894               errcode = errno;
 895
 896               if (result != 0)
 897                 break;
 898
 899               translate_endian((void *) &value, sizeof(value));
 900               if ((s.write_mem) (cb, &s, arg2, (char *) &value, sizeof(value))
 901                   != sizeof(value))
 902                 {
 903                   result = -1;
 904                   errcode = EINVAL;
 905                 }
 906             }
 907             break;
 908
 909           case __NR_stat:
 910             {
 911               char *buf;
 912               int buflen;
 913               struct stat statbuf;
 914
 915               result = stat((char *) t2h_addr(cb, &s, arg1), &statbuf);
 916               errcode = errno;
 917               if (result < 0)
 918                 break;
 919
 920               buflen = cb_host_to_target_stat (cb, NULL, NULL);
 921               buf = xmalloc (buflen);
 922               if (cb_host_to_target_stat (cb, &statbuf, buf) != buflen)
 923                 {
 924                   /* The translation failed.  This is due to an internal
 925                      host program error, not the target's fault.  */
 926                   free (buf);
 927                   result = -1;
 928                   errcode = ENOSYS;
 929                   break;
 930                 }
 931               if ((s.write_mem) (cb, &s, arg2, buf, buflen) != buflen)
 932                 {
 933                   free (buf);
 934                   result = -1;
 935                   errcode = EINVAL;
 936                   break;
 937                 }
 938               free (buf);
 939             }
 940             break;
 941
 942           case __NR_lstat:
 943             {
 944               char *buf;
 945               int buflen;
 946               struct stat statbuf;
 947
 948               result = lstat((char *) t2h_addr(cb, &s, arg1), &statbuf);
 949               errcode = errno;
 950               if (result < 0)
 951                 break;
 952
 953               buflen = cb_host_to_target_stat (cb, NULL, NULL);
 954               buf = xmalloc (buflen);
 955               if (cb_host_to_target_stat (cb, &statbuf, buf) != buflen)
 956                 {
 957                   /* The translation failed.  This is due to an internal
 958                      host program error, not the target's fault.  */
 959                   free (buf);
 960                   result = -1;
 961                   errcode = ENOSYS;
 962                   break;
 963                 }
 964               if ((s.write_mem) (cb, &s, arg2, buf, buflen) != buflen)
 965                 {
 966                   free (buf);
 967                   result = -1;
 968                   errcode = EINVAL;
 969                   break;
 970                 }
 971               free (buf);
 972             }
 973             break;
 974
 975           case __NR_fstat:
 976             {
 977               char *buf;
 978               int buflen;
 979               struct stat statbuf;
 980
 981               result = fstat(arg1, &statbuf);
 982               errcode = errno;
 983               if (result < 0)
 984                 break;
 985
 986               buflen = cb_host_to_target_stat (cb, NULL, NULL);
 987               buf = xmalloc (buflen);
 988               if (cb_host_to_target_stat (cb, &statbuf, buf) != buflen)
 989                 {
 990                   /* The translation failed.  This is due to an internal
 991                      host program error, not the target's fault.  */
 992                   free (buf);
 993                   result = -1;
 994                   errcode = ENOSYS;
 995                   break;
 996                 }
 997               if ((s.write_mem) (cb, &s, arg2, buf, buflen) != buflen)
 998                 {
 999                   free (buf);
1000                   result = -1;
1001                   errcode = EINVAL;
1002                   break;
1003                 }
1004               free (buf);
1005             }
1006             break;
1007
1008           case __NR_sysinfo:
1009             {
1010               struct sysinfo info;
1011
1012               result = sysinfo(&info);
1013               errcode = errno;
1014
1015               if (result != 0)
1016                 break;
1017
1018               info.uptime    = conv_endian(info.uptime);
1019               info.loads[0]  = conv_endian(info.loads[0]);
1020               info.loads[1]  = conv_endian(info.loads[1]);
1021               info.loads[2]  = conv_endian(info.loads[2]);
1022               info.totalram  = conv_endian(info.totalram);
1023               info.freeram   = conv_endian(info.freeram);
1024               info.sharedram = conv_endian(info.sharedram);
1025               info.bufferram = conv_endian(info.bufferram);
1026               info.totalswap = conv_endian(info.totalswap);
1027               info.freeswap  = conv_endian(info.freeswap);
1028               info.procs     = conv_endian16(info.procs);
1029 #if LINUX_VERSION_CODE >= 0x20400
1030               info.totalhigh = conv_endian(info.totalhigh);
1031               info.freehigh  = conv_endian(info.freehigh);
1032               info.mem_unit  = conv_endian(info.mem_unit);
1033 #endif
1034               if ((s.write_mem) (cb, &s, arg1, (char *) &info, sizeof(info))
1035                   != sizeof(info))
1036                 {
1037                   result = -1;
1038                   errcode = EINVAL;
1039                 }
1040             }
1041             break;
1042
1043 #if 0
1044           case __NR_ipc:
1045             {
1046               result = ipc(arg1, arg2, arg3, arg4,
1047                            (void *) t2h_addr(cb, &s, arg5), arg6);
1048               errcode = errno;
1049             }
1050             break;
1051 #endif
1052
1053           case __NR_fsync:
1054             result = fsync(arg1);
1055             errcode = errno;
1056             break;
1057
1058           case __NR_uname:
1059             /* utsname contains only arrays of char, so it is not necessary
1060                to translate endian. */
1061             result = uname((struct utsname *) t2h_addr(cb, &s, arg1));
1062             errcode = errno;
1063             break;
1064
1065           case __NR_adjtimex:
1066             {
1067               struct timex buf;
1068
1069               result = adjtimex(&buf);
1070               errcode = errno;
1071
1072               if (result != 0)
1073                 break;
1074
1075               translate_endian((void *) &buf, sizeof(buf));
1076               if ((s.write_mem) (cb, &s, arg1, (char *) &buf, sizeof(buf))
1077                   != sizeof(buf))
1078                 {
1079                   result = -1;
1080                   errcode = EINVAL;
1081                 }
1082             }
1083             break;
1084
1085           case __NR_mprotect:
1086             result = mprotect((void *) arg1, arg2, arg3);
1087             errcode = errno;
1088             break;
1089
1090           case __NR_fchdir:
1091             result = fchdir(arg1);
1092             errcode = errno;
1093             break;
1094
1095           case __NR_setfsuid32:
1096           case __NR_setfsuid:
1097             result = setfsuid(arg1);
1098             errcode = errno;
1099             break;
1100
1101           case __NR_setfsgid32:
1102           case __NR_setfsgid:
1103             result = setfsgid(arg1);
1104             errcode = errno;
1105             break;
1106
1107 #if 0
1108           case __NR__llseek:
1109             {
1110               loff_t buf;
1111
1112               result = _llseek(arg1, arg2, arg3, &buf, arg5);
1113               errcode = errno;
1114
1115               if (result != 0)
1116                 break;
1117
1118               translate_endian((void *) &buf, sizeof(buf));
1119               if ((s.write_mem) (cb, &s, t2h_addr(cb, &s, arg4),
1120                                  (char *) &buf, sizeof(buf)) != sizeof(buf))
1121                 {
1122                   result = -1;
1123                   errcode = EINVAL;
1124                 }
1125             }
1126             break;
1127
1128           case __NR_getdents:
1129             {
1130               struct dirent dir;
1131
1132               result = getdents(arg1, &dir, arg3);
1133               errcode = errno;
1134
1135               if (result != 0)
1136                 break;
1137
1138               dir.d_ino = conv_endian(dir.d_ino);
1139               dir.d_off = conv_endian(dir.d_off);
1140               dir.d_reclen = conv_endian16(dir.d_reclen);
1141               if ((s.write_mem) (cb, &s, arg2, (char *) &dir, sizeof(dir))
1142                   != sizeof(dir))
1143                 {
1144                   result = -1;
1145                   errcode = EINVAL;
1146                 }
1147             }
1148             break;
1149 #endif
1150
1151           case __NR_flock:
1152             result = flock(arg1, arg2);
1153             errcode = errno;
1154             break;
1155
1156           case __NR_msync:
1157             result = msync((void *) arg1, arg2, arg3);
1158             errcode = errno;
1159             break;
1160
1161           case __NR_readv:
1162             {
1163               struct iovec vector;
1164
1165               vector = *((struct iovec *) t2h_addr(cb, &s, arg2));
1166               translate_endian((void *) &vector, sizeof(vector));
1167
1168               result = readv(arg1, &vector, arg3);
1169               errcode = errno;
1170             }
1171             break;
1172
1173           case __NR_writev:
1174             {
1175               struct iovec vector;
1176
1177               vector = *((struct iovec *) t2h_addr(cb, &s, arg2));
1178               translate_endian((void *) &vector, sizeof(vector));
1179
1180               result = writev(arg1, &vector, arg3);
1181               errcode = errno;
1182             }
1183             break;
1184
1185           case __NR_fdatasync:
1186             result = fdatasync(arg1);
1187             errcode = errno;
1188             break;
1189
1190           case __NR_mlock:
1191             result = mlock((void *) t2h_addr(cb, &s, arg1), arg2);
1192             errcode = errno;
1193             break;
1194
1195           case __NR_munlock:
1196             result = munlock((void *) t2h_addr(cb, &s, arg1), arg2);
1197             errcode = errno;
1198             break;
1199
1200           case __NR_nanosleep:
1201             {
1202               struct timespec req, rem;
1203
1204               req = *((struct timespec *) t2h_addr(cb, &s, arg2));
1205               translate_endian((void *) &req, sizeof(req));
1206
1207               result = nanosleep(&req, &rem);
1208               errcode = errno;
1209
1210               if (result != 0)
1211                 break;
1212
1213               translate_endian((void *) &rem, sizeof(rem));
1214               if ((s.write_mem) (cb, &s, arg2, (char *) &rem, sizeof(rem))
1215                   != sizeof(rem))
1216                 {
1217                   result = -1;
1218                   errcode = EINVAL;
1219                 }
1220             }
1221             break;
1222
1223           case __NR_mremap: /* FIXME */
1224             result = (int) mremap((void *) t2h_addr(cb, &s, arg1), arg2, arg3, arg4);
1225             errcode = errno;
1226             break;
1227
1228           case __NR_getresuid32:
1229           case __NR_getresuid:
1230             {
1231               uid_t ruid, euid, suid;
1232
1233               result = getresuid(&ruid, &euid, &suid);
1234               errcode = errno;
1235
1236               if (result != 0)
1237                 break;
1238
1239               *((uid_t *) t2h_addr(cb, &s, arg1)) = conv_endian(ruid);
1240               *((uid_t *) t2h_addr(cb, &s, arg2)) = conv_endian(euid);
1241               *((uid_t *) t2h_addr(cb, &s, arg3)) = conv_endian(suid);
1242             }
1243             break;
1244
1245           case __NR_poll:
1246             {
1247               struct pollfd ufds;
1248
1249               ufds = *((struct pollfd *) t2h_addr(cb, &s, arg1));
1250               ufds.fd = conv_endian(ufds.fd);
1251               ufds.events = conv_endian16(ufds.events);
1252               ufds.revents = conv_endian16(ufds.revents);
1253
1254               result = poll(&ufds, arg2, arg3);
1255               errcode = errno;
1256             }
1257             break;
1258
1259           case __NR_getresgid32:
1260           case __NR_getresgid:
1261             {
1262               uid_t rgid, egid, sgid;
1263
1264               result = getresgid(&rgid, &egid, &sgid);
1265               errcode = errno;
1266
1267               if (result != 0)
1268                 break;
1269
1270               *((uid_t *) t2h_addr(cb, &s, arg1)) = conv_endian(rgid);
1271               *((uid_t *) t2h_addr(cb, &s, arg2)) = conv_endian(egid);
1272               *((uid_t *) t2h_addr(cb, &s, arg3)) = conv_endian(sgid);
1273             }
1274             break;
1275
1276           case __NR_pread:
1277             result =  pread(arg1, (void *) t2h_addr(cb, &s, arg2), arg3, arg4);
1278             errcode = errno;
1279             break;
1280
1281           case __NR_pwrite:
1282             result =  pwrite(arg1, (void *) t2h_addr(cb, &s, arg2), arg3, arg4);
1283             errcode = errno;
1284             break;
1285
1286           case __NR_chown32:
1287           case __NR_chown:
1288             result = chown((char *) t2h_addr(cb, &s, arg1), arg2, arg3);
1289             errcode = errno;
1290             break;
1291
1292           case __NR_getcwd:
1293             result = (int) getcwd((char *) t2h_addr(cb, &s, arg1), arg2);
1294             errcode = errno;
1295             break;
1296
1297           case __NR_sendfile:
1298             {
1299               off_t offset;
1300
1301               offset = *((off_t *) t2h_addr(cb, &s, arg3));
1302               offset = conv_endian(offset);
1303
1304               result = sendfile(arg1, arg2, &offset, arg3);
1305               errcode = errno;
1306
1307               if (result != 0)
1308                 break;
1309
1310               *((off_t *) t2h_addr(cb, &s, arg3)) = conv_endian(offset);
1311             }
1312             break;
1313
1314           default:
1315             result = -1;
1316             errcode = ENOSYS;
1317             break;
1318           }
1319
1320         if (result == -1)
1321           m32rbf_h_gr_set (current_cpu, 0, -errcode);
1322         else
1323           m32rbf_h_gr_set (current_cpu, 0, result);
1324         break;
1325       }
1326
1327     case TRAP_BREAKPOINT:
1328       sim_engine_halt (sd, current_cpu, NULL, pc,
1329                        sim_stopped, SIM_SIGTRAP);
1330       break;
1331
1332     case TRAP_FLUSH_CACHE:
1333       /* Do nothing.  */
1334       break;
1335
1336     default :
1337       {
1338         /* Use cr5 as EVB (EIT Vector Base) register.  */
1339         USI new_pc = m32rbf_h_cr_get (current_cpu, 5) + 0x40 + num * 4;
1340         return new_pc;
1341       }
1342     }
1343
1344   /* Fake an "rte" insn.  */
1345   /* FIXME: Should duplicate all of rte processing.  */
1346   return (pc & -4) + 4;
1347 }