Add support for m32r-linux target, including a RELA ABI and PIC.

1 files changed, 1392 insertions, 0 deletions

diff --git a/sim/m32r/traps-linux.c b/sim/m32r/traps-linux.c
new file mode 100644
index 0000000..55a97a5
--- /dev/null
+++ b/sim/m32r/traps-linux.c
@@ -0,0 +1,1392 @@
+/* m32r exception, interrupt, and trap (EIT) support
+   Copyright (C) 1998, 2003 Free Software Foundation, Inc.
+   Contributed by Renesas.
+
+   This file is part of GDB, the GNU debugger.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation, Inc.,
+   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#include "sim-main.h"
+#include "syscall.h"
+#include "targ-vals.h"
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <time.h>
+#include <unistd.h>
+#include <utime.h>
+#include <sys/mman.h>
+#include <sys/poll.h>
+#include <sys/resource.h>
+#include <sys/sysinfo.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/timeb.h>
+#include <sys/timex.h>
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <sys/utsname.h>
+#include <sys/vfs.h>
+#include <linux/module.h>
+#include <linux/sysctl.h>
+#include <linux/types.h>
+#include <linux/unistd.h>
+
+#define TRAP_ELF_SYSCALL 0
+#define TRAP_LINUX_SYSCALL 2
+#define TRAP_FLUSH_CACHE 12
+
+/* The semantic code invokes this for invalid (unrecognized) instructions.  */
+
+SEM_PC
+sim_engine_invalid_insn (SIM_CPU *current_cpu, IADDR cia, SEM_PC vpc)
+{
+  SIM_DESC sd = CPU_STATE (current_cpu);
+
+#if 0
+  if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)
+    {
+      h_bsm_set (current_cpu, h_sm_get (current_cpu));
+      h_bie_set (current_cpu, h_ie_get (current_cpu));
+      h_bcond_set (current_cpu, h_cond_get (current_cpu));
+      /* sm not changed */
+      h_ie_set (current_cpu, 0);
+      h_cond_set (current_cpu, 0);
+
+      h_bpc_set (current_cpu, cia);
+
+      sim_engine_restart (CPU_STATE (current_cpu), current_cpu, NULL,
+			  EIT_RSVD_INSN_ADDR);
+    }
+  else
+#endif
+    sim_engine_halt (sd, current_cpu, NULL, cia, sim_stopped, SIM_SIGILL);
+  return vpc;
+}
+
+/* Process an address exception.  */
+
+void
+m32r_core_signal (SIM_DESC sd, SIM_CPU *current_cpu, sim_cia cia,
+		  unsigned int map, int nr_bytes, address_word addr,
+		  transfer_type transfer, sim_core_signals sig)
+{
+  if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)
+    {
+      m32rbf_h_cr_set (current_cpu, H_CR_BBPC,
+                       m32rbf_h_cr_get (current_cpu, H_CR_BPC));
+      if (MACH_NUM (CPU_MACH (current_cpu)) == MACH_M32R)
+        {
+          m32rbf_h_bpsw_set (current_cpu, m32rbf_h_psw_get (current_cpu));
+          /* sm not changed */
+          m32rbf_h_psw_set (current_cpu, m32rbf_h_psw_get (current_cpu) & 0x80);
+        }
+      else if (MACH_NUM (CPU_MACH (current_cpu)) == MACH_M32RX)
+        {
+          m32rxf_h_bpsw_set (current_cpu, m32rxf_h_psw_get (current_cpu));
+          /* sm not changed */
+          m32rxf_h_psw_set (current_cpu, m32rxf_h_psw_get (current_cpu) & 0x80);
+        }
+      else
+        {
+          m32r2f_h_bpsw_set (current_cpu, m32r2f_h_psw_get (current_cpu));
+          /* sm not changed */
+          m32r2f_h_psw_set (current_cpu, m32r2f_h_psw_get (current_cpu) & 0x80);
+        }
+      m32rbf_h_cr_set (current_cpu, H_CR_BPC, cia);
+
+      sim_engine_restart (CPU_STATE (current_cpu), current_cpu, NULL,
+                          EIT_ADDR_EXCP_ADDR);
+    }
+  else
+    sim_core_signal (sd, current_cpu, cia, map, nr_bytes, addr,
+                     transfer, sig);
+}
+
+/* Read/write functions for system call interface.  */
+
+static int
+syscall_read_mem (host_callback *cb, struct cb_syscall *sc,
+		  unsigned long taddr, char *buf, int bytes)
+{
+  SIM_DESC sd = (SIM_DESC) sc->p1;
+  SIM_CPU *cpu = (SIM_CPU *) sc->p2;
+
+  return sim_core_read_buffer (sd, cpu, read_map, buf, taddr, bytes);
+}
+
+static int
+syscall_write_mem (host_callback *cb, struct cb_syscall *sc,
+		   unsigned long taddr, const char *buf, int bytes)
+{
+  SIM_DESC sd = (SIM_DESC) sc->p1;
+  SIM_CPU *cpu = (SIM_CPU *) sc->p2;
+
+  return sim_core_write_buffer (sd, cpu, write_map, buf, taddr, bytes);
+}
+
+/* Translate target's address to host's address.  */
+
+static void *
+t2h_addr (host_callback *cb, struct cb_syscall *sc,
+          unsigned long taddr)
+{
+  extern sim_core_trans_addr (SIM_DESC, sim_cpu *, unsigned, address_word);
+  void *addr;
+  SIM_DESC sd = (SIM_DESC) sc->p1;
+  SIM_CPU *cpu = (SIM_CPU *) sc->p2;
+
+  if (taddr == 0)
+    return NULL;
+
+  return sim_core_trans_addr (sd, cpu, read_map, taddr);
+}
+
+static unsigned int
+conv_endian (unsigned int tvalue)
+{
+  unsigned int hvalue;
+  unsigned int t1, t2, t3, t4;
+
+  if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN)
+    {
+      t1 = tvalue & 0xff000000;
+      t2 = tvalue & 0x00ff0000;
+      t3 = tvalue & 0x0000ff00;
+      t4 = tvalue & 0x000000ff;
+
+      hvalue =  t1 >> 24;
+      hvalue += t2 >> 8;
+      hvalue += t3 << 8;
+      hvalue += t4 << 24;
+    }
+  else
+    hvalue = tvalue;
+
+  return hvalue;
+}
+
+static unsigned short
+conv_endian16 (unsigned short tvalue)
+{
+  unsigned short hvalue;
+  unsigned short t1, t2;
+
+  if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN)
+    {
+      t1 = tvalue & 0xff00;
+      t2 = tvalue & 0x00ff;
+
+      hvalue =  t1 >> 8;
+      hvalue += t2 << 8;
+    }
+  else
+    hvalue = tvalue;
+
+  return hvalue;
+}
+
+static void
+translate_endian(void *addr, size_t size)
+{
+  unsigned int *p = (unsigned int *) addr;
+  int i;
+  
+  for (i = 0; i <= size - 4; i += 4,p++)
+    *p = conv_endian(*p);
+  
+  if (i <= size - 2)
+    *((unsigned short *) p) = conv_endian16(*((unsigned short *) p));
+}
+
+/* Trap support.
+   The result is the pc address to continue at.
+   Preprocessing like saving the various registers has already been done.  */
+
+USI
+m32r_trap (SIM_CPU *current_cpu, PCADDR pc, int num)
+{
+  SIM_DESC sd = CPU_STATE (current_cpu);
+  host_callback *cb = STATE_CALLBACK (sd);
+
+#ifdef SIM_HAVE_BREAKPOINTS
+  /* Check for breakpoints "owned" by the simulator first, regardless
+     of --environment.  */
+  if (num == TRAP_BREAKPOINT)
+    {
+      /* First try sim-break.c.  If it's a breakpoint the simulator "owns"
+	 it doesn't return.  Otherwise it returns and let's us try.  */
+      sim_handle_breakpoint (sd, current_cpu, pc);
+      /* Fall through.  */
+    }
+#endif
+
+  switch (num)
+    {
+    case TRAP_ELF_SYSCALL :
+      {
+        CB_SYSCALL s;
+ 
+        CB_SYSCALL_INIT (&s);
+        s.func = m32rbf_h_gr_get (current_cpu, 0);
+        s.arg1 = m32rbf_h_gr_get (current_cpu, 1);
+        s.arg2 = m32rbf_h_gr_get (current_cpu, 2);
+        s.arg3 = m32rbf_h_gr_get (current_cpu, 3);
+ 
+        if (s.func == TARGET_SYS_exit)
+          {
+            sim_engine_halt (sd, current_cpu, NULL, pc, sim_exited, s.arg1);
+          }
+ 
+        s.p1 = (PTR) sd;
+        s.p2 = (PTR) current_cpu;
+        s.read_mem = syscall_read_mem;
+        s.write_mem = syscall_write_mem;
+        cb_syscall (cb, &s);
+        m32rbf_h_gr_set (current_cpu, 2, s.errcode);
+        m32rbf_h_gr_set (current_cpu, 0, s.result);
+        m32rbf_h_gr_set (current_cpu, 1, s.result2);
+        break;
+      }
+
+    case TRAP_LINUX_SYSCALL :
+      {
+	CB_SYSCALL s;
+        unsigned int func, arg1, arg2, arg3, arg4, arg5, arg6, arg7;
+        int result, result2, errcode;
+
+        if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)
+          {
+            /* The new pc is the trap vector entry.
+               We assume there's a branch there to some handler.
+	       Use cr5 as EVB (EIT Vector Base) register.  */
+            USI new_pc = m32rbf_h_cr_get (current_cpu, 5) + 0x40 + num * 4;
+            return new_pc;
+          }
+
+	func = m32rbf_h_gr_get (current_cpu, 7);
+	arg1 = m32rbf_h_gr_get (current_cpu, 0);
+	arg2 = m32rbf_h_gr_get (current_cpu, 1);
+	arg3 = m32rbf_h_gr_get (current_cpu, 2);
+	arg4 = m32rbf_h_gr_get (current_cpu, 3);
+	arg5 = m32rbf_h_gr_get (current_cpu, 4);
+	arg6 = m32rbf_h_gr_get (current_cpu, 5);
+	arg7 = m32rbf_h_gr_get (current_cpu, 6);
+
+        CB_SYSCALL_INIT (&s);
+        s.func = func;
+        s.arg1 = arg1;
+        s.arg2 = arg2;
+        s.arg3 = arg3;
+
+        s.p1 = (PTR) sd;
+        s.p2 = (PTR) current_cpu;
+        s.read_mem = syscall_read_mem;
+        s.write_mem = syscall_write_mem;
+
+        result = 0;
+        result2 = 0;
+        errcode = 0;
+
+        switch (func)
+          {
+          case __NR_exit:
+	    sim_engine_halt (sd, current_cpu, NULL, pc, sim_exited, arg1);
+            break;
+
+          case __NR_read:
+            result = read(arg1, t2h_addr(cb, &s, arg2), arg3);
+            errcode = errno;
+            break;
+
+          case __NR_write:
+            result = write(arg1, t2h_addr(cb, &s, arg2), arg3);
+            errcode = errno;
+            break;
+
+          case __NR_open:
+            result = open((char *) t2h_addr(cb, &s, arg1), arg2, arg3);
+            errcode = errno;
+            break;
+
+          case __NR_close:
+            result = close(arg1);
+            errcode = errno;
+            break;
+
+          case __NR_creat:
+            result = creat((char *) t2h_addr(cb, &s, arg1), arg2);
+            errcode = errno;
+            break;
+
+          case __NR_link:
+            result = link((char *) t2h_addr(cb, &s, arg1),
+                          (char *) t2h_addr(cb, &s, arg2));
+            errcode = errno;
+            break;
+
+          case __NR_unlink:
+            result = unlink((char *) t2h_addr(cb, &s, arg1));
+            errcode = errno;
+            break;
+
+          case __NR_chdir:
+            result = chdir((char *) t2h_addr(cb, &s, arg1));
+            errcode = errno;
+            break;
+
+          case __NR_time:
+            {
+              time_t t;
+
+              if (arg1 == 0)
+                {
+                  result = (int) time(NULL);
+                  errcode = errno;
+                }
+              else
+                {
+                  result = (int) time(&t);
+                  errcode = errno;
+
+                  if (result != 0)
+                    break;
+
+                  translate_endian((void *) &t, sizeof(t));
+                  if ((s.write_mem) (cb, &s, arg1, (char *) &t, sizeof(t)) != sizeof(t))
+                    {
+                      result = -1;
+                      errcode = EINVAL;
+                    }
+                }
+            }
+            break;
+
+          case __NR_mknod:
+            result = mknod((char *) t2h_addr(cb, &s, arg1),
+                           (mode_t) arg2, (dev_t) arg3);
+            errcode = errno;
+            break;
+
+          case __NR_chmod:
+            result = chmod((char *) t2h_addr(cb, &s, arg1), (mode_t) arg2);
+            errcode = errno;
+            break;
+
+          case __NR_lchown:
+            result = lchown((char *) t2h_addr(cb, &s, arg1),
+                            (uid_t) arg2, (gid_t) arg3);
+            errcode = errno;
+            break;
+
+          case __NR_lseek:
+            result = (int) lseek(arg1, (off_t) arg2, arg3);
+            errcode = errno;
+            break;
+
+          case __NR_getpid:
+            result = getpid();
+            errcode = errno;
+            break;
+
+          case __NR_getuid:
+            result = getuid();
+            errcode = errno;
+            break;
+
+          case __NR_utime:
+            {
+              struct utimbuf buf;
+
+              if (arg2 == 0)
+                {
+                  result = utime((char *) t2h_addr(cb, &s, arg1), NULL);
+                  errcode = errno;
+                }
+              else
+                {
+                  buf = *((struct utimbuf *) t2h_addr(cb, &s, arg2));
+                  translate_endian((void *) &buf, sizeof(buf));
+                  result = utime((char *) t2h_addr(cb, &s, arg1), &buf);
+                  errcode = errno;
+                }
+            }
+            break;
+
+          case __NR_access:
+            result = access((char *) t2h_addr(cb, &s, arg1), arg2);
+            errcode = errno;
+            break;
+
+          case __NR_ftime:
+            {
+              struct timeb t;
+
+              result = ftime(&t);
+              errcode = errno;
+
+              if (result != 0)
+                break;
+
+              t.time = conv_endian(t.time);
+              t.millitm = conv_endian16(t.millitm);
+              t.timezone = conv_endian16(t.timezone);
+              t.dstflag = conv_endian16(t.dstflag);
+              if ((s.write_mem) (cb, &s, arg1, (char *) &t, sizeof(t))
+                  != sizeof(t))
+                {
+                  result = -1;
+                  errcode = EINVAL;
+                }
+            }
+
+          case __NR_sync:
+            sync();
+            result = 0;
+            break;
+
+          case __NR_rename:
+            result = rename((char *) t2h_addr(cb, &s, arg1),
+                            (char *) t2h_addr(cb, &s, arg2));
+            errcode = errno;
+            break;
+
+          case __NR_mkdir:
+            result = mkdir((char *) t2h_addr(cb, &s, arg1), arg2);
+            errcode = errno;
+            break;
+
+          case __NR_rmdir:
+            result = rmdir((char *) t2h_addr(cb, &s, arg1));
+            errcode = errno;
+            break;
+
+          case __NR_dup:
+            result = dup(arg1);
+            errcode = errno;
+            break;
+
+          case __NR_brk:
+            result = brk((void *) arg1);
+            errcode = errno;
+            //result = arg1;
+            break;
+
+          case __NR_getgid:
+            result = getgid();
+            errcode = errno;
+            break;
+
+          case __NR_geteuid:
+            result = geteuid();
+            errcode = errno;
+            break;
+
+          case __NR_getegid:
+            result = getegid();
+            errcode = errno;
+            break;
+
+          case __NR_ioctl:
+            result = ioctl(arg1, arg2, arg3);
+            errcode = errno;
+            break;
+
+          case __NR_fcntl:
+            result = fcntl(arg1, arg2, arg3);
+            errcode = errno;
+            break;
+
+          case __NR_ustat:
+            {
+              struct ustat ubuf;
+
+              result = ustat(arg1, &ubuf);
+              errcode = errno;
+
+              if (result != 0)
+                break;
+
+              ubuf.f_tfree = conv_endian(ubuf.f_tfree);
+              ubuf.f_tinode = conv_endian(ubuf.f_tinode);
+              if ((s.write_mem) (cb, &s, arg2, (char *) &ubuf, sizeof(ubuf))
+                  != sizeof(ubuf))
+                {
+                  result = -1;
+                  errcode = EINVAL;
+                }
+            }
+            break;
+
+          case __NR_dup2:
+            result = dup2(arg1, arg2);
+            errcode = errno;
+            break;
+
+          case __NR_getppid:
+            result = getppid();
+            errcode = errno;
+            break;
+
+          case __NR_getpgrp:
+            result = getpgrp();
+            errcode = errno;
+            break;
+
+          case __NR_getrlimit:
+            {
+              struct rlimit rlim;
+
+              result = getrlimit(arg1, &rlim);
+              errcode = errno;
+
+              if (result != 0)
+                break;
+
+              translate_endian((void *) &rlim, sizeof(rlim));
+              if ((s.write_mem) (cb, &s, arg2, (char *) &rlim, sizeof(rlim))
+                  != sizeof(rlim))
+                {
+                  result = -1;
+                  errcode = EINVAL;
+                }
+            }
+            break;
+
+          case __NR_getrusage:
+            {
+              struct rusage usage;
+
+              result = getrusage(arg1, &usage);
+              errcode = errno;
+
+              if (result != 0)
+                break;
+
+              translate_endian((void *) &usage, sizeof(usage));
+              if ((s.write_mem) (cb, &s, arg2, (char *) &usage, sizeof(usage))
+                  != sizeof(usage))
+                {
+                  result = -1;
+                  errcode = EINVAL;
+                }
+            }
+            break;
+
+          case __NR_gettimeofday:
+            {
+              struct timeval tv;
+              struct timezone tz;
+              
+              result = gettimeofday(&tv, &tz);
+              errcode = errno;
+              
+              if (result != 0)
+                break;
+
+              translate_endian((void *) &tv, sizeof(tv));
+              if ((s.write_mem) (cb, &s, arg1, (char *) &tv, sizeof(tv))
+                  != sizeof(tv))
+                {
+                  result = -1;
+                  errcode = EINVAL;
+                }
+
+              translate_endian((void *) &tz, sizeof(tz));
+              if ((s.write_mem) (cb, &s, arg2, (char *) &tz, sizeof(tz))
+                  != sizeof(tz))
+                {
+                  result = -1;
+                  errcode = EINVAL;
+                }
+            }
+            break;
+
+          case __NR_getgroups:
+            {
+              gid_t *list;
+
+              if (arg1 > 0)
+                list = (gid_t *) malloc(arg1 * sizeof(gid_t));
+
+              result = getgroups(arg1, list);
+              errcode = errno;
+
+              if (result != 0)
+                break;
+
+              translate_endian((void *) list, arg1 * sizeof(gid_t));
+              if (arg1 > 0)
+                if ((s.write_mem) (cb, &s, arg2, (char *) list, arg1 * sizeof(gid_t))
+                    != arg1 * sizeof(gid_t))
+                  {
+                    result = -1;
+                     errcode = EINVAL;
+                  }
+            }
+            break;
+
+          case __NR_select:
+            {
+              int n;
+              fd_set readfds;
+              fd_set *treadfdsp;
+              fd_set *hreadfdsp;
+              fd_set writefds;
+              fd_set *twritefdsp;
+              fd_set *hwritefdsp;
+              fd_set exceptfds;
+              fd_set *texceptfdsp;
+              fd_set *hexceptfdsp;
+              struct timeval *ttimeoutp;
+              struct timeval timeout;
+              
+              n = arg1;
+
+              treadfdsp = (fd_set *) arg2;
+              if (treadfdsp != NULL)
+                {
+                  readfds = *((fd_set *) t2h_addr(cb, &s, (unsigned int) treadfdsp));
+                  translate_endian((void *) &readfds, sizeof(readfds));
+                  hreadfdsp = &readfds;
+                }
+              else
+                hreadfdsp = NULL;
+              
+              twritefdsp  = (fd_set *) arg3;
+              if (twritefdsp != NULL)
+                {
+                  writefds = *((fd_set *) t2h_addr(cb, &s, (unsigned int) twritefdsp));
+                  translate_endian((void *) &writefds, sizeof(writefds));
+                  hwritefdsp = &writefds;
+                }
+              else
+                hwritefdsp = NULL;
+              
+              texceptfdsp = (fd_set *) arg4;
+              if (texceptfdsp != NULL)
+                {
+                  exceptfds = *((fd_set *) t2h_addr(cb, &s, (unsigned int) texceptfdsp));
+                  translate_endian((void *) &exceptfds, sizeof(exceptfds));
+                  hexceptfdsp = &exceptfds;
+                }
+              else
+                hexceptfdsp = NULL;
+              
+              ttimeoutp = (struct timeval *) arg5;
+              timeout = *((struct timeval *) t2h_addr(cb, &s, (unsigned int) ttimeoutp));
+              translate_endian((void *) &timeout, sizeof(timeout));
+
+              result = select(n, hreadfdsp, hwritefdsp, hexceptfdsp, &timeout);
+              errcode = errno;
+
+              if (result != 0)
+                break;
+
+              if (treadfdsp != NULL)
+                {
+                  translate_endian((void *) &readfds, sizeof(readfds));
+                  if ((s.write_mem) (cb, &s, (unsigned long) treadfdsp,
+                       (char *) &readfds, sizeof(readfds)) != sizeof(readfds))
+                    {
+                      result = -1;
+                      errcode = EINVAL;
+                    }
+                }
+
+              if (twritefdsp != NULL)
+                {
+                  translate_endian((void *) &writefds, sizeof(writefds));
+                  if ((s.write_mem) (cb, &s, (unsigned long) twritefdsp,
+                       (char *) &writefds, sizeof(writefds)) != sizeof(writefds))
+                    {
+                      result = -1;
+                      errcode = EINVAL;
+                    }
+                }
+
+              if (texceptfdsp != NULL)
+                {
+                  translate_endian((void *) &exceptfds, sizeof(exceptfds));
+                  if ((s.write_mem) (cb, &s, (unsigned long) texceptfdsp,
+                       (char *) &exceptfds, sizeof(exceptfds)) != sizeof(exceptfds))
+                    {
+                      result = -1;
+                      errcode = EINVAL;
+                    }
+                }
+
+              translate_endian((void *) &timeout, sizeof(timeout));
+              if ((s.write_mem) (cb, &s, (unsigned long) ttimeoutp,
+                   (char *) &timeout, sizeof(timeout)) != sizeof(timeout))
+                {
+                  result = -1;
+                  errcode = EINVAL;
+                }
+            }
+            break;
+
+          case __NR_symlink:
+            result = symlink((char *) t2h_addr(cb, &s, arg1),
+                             (char *) t2h_addr(cb, &s, arg2));
+            errcode = errno;
+            break;
+
+          case __NR_readlink:
+            result = readlink((char *) t2h_addr(cb, &s, arg1),
+                              (char *) t2h_addr(cb, &s, arg2),
+                              arg3);
+            errcode = errno;
+            break;
+
+          case __NR_readdir:
+            result = (int) readdir((DIR *) t2h_addr(cb, &s, arg1));
+            errcode = errno;
+            break;
+
+#if 0
+          case __NR_mmap:
+            {
+              result = (int) mmap((void *) t2h_addr(cb, &s, arg1),
+                                  arg2, arg3, arg4, arg5, arg6);
+              errcode = errno;
+
+              if (errno == 0)
+                {
+                  sim_core_attach (sd, NULL,
+                                   0, access_read_write_exec, 0,
+                                   result, arg2, 0, NULL, NULL);
+                }
+            }
+            break;
+#endif
+          case __NR_mmap:
+            {
+              void *addr;
+              size_t len;
+              int prot, flags, fildes;
+              off_t off;
+              
+              addr   = *((void **)  t2h_addr(cb, &s, arg1));
+              len    = *((size_t *) t2h_addr(cb, &s, arg1 + 4));
+              prot   = *((int *)    t2h_addr(cb, &s, arg1 + 8));
+              flags  = *((int *)    t2h_addr(cb, &s, arg1 + 12));
+              fildes = *((int *)    t2h_addr(cb, &s, arg1 + 16));
+              off    = *((off_t *)  t2h_addr(cb, &s, arg1 + 20));
+
+              addr   = (void *) conv_endian((unsigned int) addr);
+              len    = conv_endian(len);
+              prot   = conv_endian(prot);
+              flags  = conv_endian(flags);
+              fildes = conv_endian(fildes);
+              off    = conv_endian(off);
+
+              //addr   = (void *) t2h_addr(cb, &s, (unsigned int) addr);
+              result = (int) mmap(addr, len, prot, flags, fildes, off);
+              errcode = errno;
+
+              //if (errno == 0)
+              if (result != -1)
+                {
+                  char c;
+		  if (sim_core_read_buffer (sd, NULL, read_map, &c, result, 1) == 0)
+                    sim_core_attach (sd, NULL,
+                                     0, access_read_write_exec, 0,
+                                     result, len, 0, NULL, NULL);
+                }
+            }
+            break;
+
+          case __NR_munmap:
+            {
+            result = munmap((void *)arg1, arg2);
+            errcode = errno;
+            if (result != -1)
+              {
+                sim_core_detach (sd, NULL, 0, arg2, result);
+              }
+            }
+            break;
+
+          case __NR_truncate:
+            result = truncate((char *) t2h_addr(cb, &s, arg1), arg2);
+            errcode = errno;
+            break;
+
+          case __NR_ftruncate:
+            result = ftruncate(arg1, arg2);
+            errcode = errno;
+            break;
+
+          case __NR_fchmod:
+            result = fchmod(arg1, arg2);
+            errcode = errno;
+            break;
+
+          case __NR_fchown:
+            result = fchown(arg1, arg2, arg3);
+            errcode = errno;
+            break;
+
+          case __NR_statfs:
+            {
+              struct statfs statbuf;
+
+              result = statfs((char *) t2h_addr(cb, &s, arg1), &statbuf);
+              errcode = errno;
+
+              if (result != 0)
+                break;
+
+              translate_endian((void *) &statbuf, sizeof(statbuf));
+              if ((s.write_mem) (cb, &s, arg2, (char *) &statbuf, sizeof(statbuf))
+                  != sizeof(statbuf))
+                {
+                  result = -1;
+                  errcode = EINVAL;
+                }
+            }
+            break;
+
+          case __NR_fstatfs:
+            {
+              struct statfs statbuf;
+
+              result = fstatfs(arg1, &statbuf);
+              errcode = errno;
+
+              if (result != 0)
+                break;
+
+              translate_endian((void *) &statbuf, sizeof(statbuf));
+              if ((s.write_mem) (cb, &s, arg2, (char *) &statbuf, sizeof(statbuf))
+                  != sizeof(statbuf))
+                {
+                  result = -1;
+                  errcode = EINVAL;
+                }
+            }
+            break;
+
+          case __NR_syslog:
+            result = syslog(arg1, (char *) t2h_addr(cb, &s, arg2));
+            errcode = errno;
+            break;
+
+          case __NR_setitimer:
+            {
+              struct itimerval value, ovalue;
+
+              value = *((struct itimerval *) t2h_addr(cb, &s, arg2));
+              translate_endian((void *) &value, sizeof(value));
+
+              if (arg2 == 0)
+                {
+                  result = setitimer(arg1, &value, NULL);
+                  errcode = errno;
+                }
+              else
+                {
+                  result = setitimer(arg1, &value, &ovalue);
+                  errcode = errno;
+
+                  if (result != 0)
+                    break;
+
+                  translate_endian((void *) &ovalue, sizeof(ovalue));
+                  if ((s.write_mem) (cb, &s, arg3, (char *) &ovalue, sizeof(ovalue))
+                      != sizeof(ovalue))
+                    {
+                      result = -1;
+                      errcode = EINVAL;
+                    }
+                }
+            }
+            break;
+
+          case __NR_getitimer:
+            {
+              struct itimerval value;
+
+              result = getitimer(arg1, &value);
+              errcode = errno;
+
+              if (result != 0)
+                break;
+
+              translate_endian((void *) &value, sizeof(value));
+              if ((s.write_mem) (cb, &s, arg2, (char *) &value, sizeof(value))
+                  != sizeof(value))
+                {
+                  result = -1;
+                  errcode = EINVAL;
+                }
+            }
+            break;
+
+          case __NR_stat:
+            {
+              char *buf;
+              int buflen;
+              struct stat statbuf;
+
+              result = stat((char *) t2h_addr(cb, &s, arg1), &statbuf);
+              errcode = errno;
+              if (result < 0)
+                break;
+
+              buflen = cb_host_to_target_stat (cb, NULL, NULL);
+              buf = xmalloc (buflen);
+              if (cb_host_to_target_stat (cb, &statbuf, buf) != buflen)
+                {
+                  /* The translation failed.  This is due to an internal
+                     host program error, not the target's fault.  */
+                  free (buf);
+                  result = -1;
+                  errcode = ENOSYS;
+                  break;
+                }
+              if ((s.write_mem) (cb, &s, arg2, buf, buflen) != buflen)
+                {
+                  free (buf);
+                  result = -1;
+                  errcode = EINVAL;
+                  break;
+                }
+              free (buf);
+            }
+            break;
+
+          case __NR_lstat:
+            {
+              char *buf;
+              int buflen;
+              struct stat statbuf;
+
+              result = lstat((char *) t2h_addr(cb, &s, arg1), &statbuf);
+              errcode = errno;
+              if (result < 0)
+                break;
+
+              buflen = cb_host_to_target_stat (cb, NULL, NULL);
+              buf = xmalloc (buflen);
+              if (cb_host_to_target_stat (cb, &statbuf, buf) != buflen)
+                {
+                  /* The translation failed.  This is due to an internal
+                     host program error, not the target's fault.  */
+                  free (buf);
+                  result = -1;
+                  errcode = ENOSYS;
+                  break;
+                }
+              if ((s.write_mem) (cb, &s, arg2, buf, buflen) != buflen)
+                {
+                  free (buf);
+                  result = -1;
+                  errcode = EINVAL;
+                  break;
+                }
+              free (buf);
+            }
+            break;
+
+          case __NR_fstat:
+            {
+              char *buf;
+              int buflen;
+              struct stat statbuf;
+
+              result = fstat(arg1, &statbuf);
+              errcode = errno;
+              if (result < 0)
+                break;
+
+              buflen = cb_host_to_target_stat (cb, NULL, NULL);
+              buf = xmalloc (buflen);
+              if (cb_host_to_target_stat (cb, &statbuf, buf) != buflen)
+                {
+                  /* The translation failed.  This is due to an internal
+                     host program error, not the target's fault.  */
+                  free (buf);
+                  result = -1;
+                  errcode = ENOSYS;
+                  break;
+                }
+              if ((s.write_mem) (cb, &s, arg2, buf, buflen) != buflen)
+                {
+                  free (buf);
+                  result = -1;
+                  errcode = EINVAL;
+                  break;
+                }
+              free (buf);
+            }
+            break;
+
+          case __NR_sysinfo:
+            {
+              struct sysinfo info;
+
+              result = sysinfo(&info);
+              errcode = errno;
+
+              if (result != 0)
+                break;
+
+              info.uptime    = conv_endian(info.uptime);
+              info.loads[0]  = conv_endian(info.loads[0]);
+              info.loads[1]  = conv_endian(info.loads[1]);
+              info.loads[2]  = conv_endian(info.loads[2]);
+              info.totalram  = conv_endian(info.totalram);
+              info.freeram   = conv_endian(info.freeram);
+              info.sharedram = conv_endian(info.sharedram);
+              info.bufferram = conv_endian(info.bufferram);
+              info.totalswap = conv_endian(info.totalswap);
+              info.freeswap  = conv_endian(info.freeswap);
+              info.procs     = conv_endian16(info.procs);
+#if LINUX_VERSION_CODE >= 0x20400
+              info.totalhigh = conv_endian(info.totalhigh);
+              info.freehigh  = conv_endian(info.freehigh);
+              info.mem_unit  = conv_endian(info.mem_unit);
+#endif
+              if ((s.write_mem) (cb, &s, arg1, (char *) &info, sizeof(info))
+                  != sizeof(info))
+                {
+                  result = -1;
+                  errcode = EINVAL;
+                }
+            }
+            break;
+
+#if 0
+          case __NR_ipc:
+            {
+              result = ipc(arg1, arg2, arg3, arg4,
+                           (void *) t2h_addr(cb, &s, arg5), arg6);
+              errcode = errno;
+            }
+            break;
+#endif
+
+          case __NR_fsync:
+            result = fsync(arg1);
+            errcode = errno;
+            break;
+
+          case __NR_uname:
+            /* utsname contains only arrays of char, so it is not necessary
+               to translate endian. */
+            result = uname((struct utsname *) t2h_addr(cb, &s, arg1));
+            errcode = errno;
+            break;
+
+          case __NR_adjtimex:
+            {
+              struct timex buf;
+
+              result = adjtimex(&buf);
+              errcode = errno;
+
+              if (result != 0)
+                break;
+
+              translate_endian((void *) &buf, sizeof(buf));
+              if ((s.write_mem) (cb, &s, arg1, (char *) &buf, sizeof(buf))
+                  != sizeof(buf))
+                {
+                  result = -1;
+                  errcode = EINVAL;
+                }
+            }
+            break;
+
+          case __NR_mprotect:
+            result = mprotect((void *) arg1, arg2, arg3);
+            errcode = errno;
+            break;
+
+          case __NR_get_kernel_syms:
+            {
+              struct kernel_sym table;
+
+              result = get_kernel_syms(&table);
+              errcode = errno;
+
+              if (result != 0)
+                break;
+
+              table.value = conv_endian(table.value);
+              if ((s.write_mem) (cb, &s, arg1, (char *) &table, sizeof(table))
+                  != sizeof(table))
+                {
+                  result = -1;
+                  errcode = EINVAL;
+                }
+            }
+            break;
+
+          case __NR_fchdir:
+            result = fchdir(arg1);
+            errcode = errno;
+            break;
+
+          case __NR_setfsuid:
+            result = setfsuid(arg1);
+            errcode = errno;
+            break;
+
+          case __NR_setfsgid:
+            result = setfsgid(arg1);
+            errcode = errno;
+            break;
+
+#if 0
+          case __NR__llseek:
+            {
+              loff_t buf;
+
+              result = _llseek(arg1, arg2, arg3, &buf, arg5);
+              errcode = errno;
+
+              if (result != 0)
+                break;
+
+              translate_endian((void *) &buf, sizeof(buf));
+              if ((s.write_mem) (cb, &s, t2h_addr(cb, &s, arg4),
+                                 (char *) &buf, sizeof(buf)) != sizeof(buf))
+                {
+                  result = -1;
+                  errcode = EINVAL;
+                }
+            }
+            break;
+
+          case __NR_getdents:
+            {
+              struct dirent dir;
+
+              result = getdents(arg1, &dir, arg3);
+              errcode = errno;
+
+              if (result != 0)
+                break;
+
+              dir.d_ino = conv_endian(dir.d_ino);
+              dir.d_off = conv_endian(dir.d_off);
+              dir.d_reclen = conv_endian16(dir.d_reclen);
+              if ((s.write_mem) (cb, &s, arg2, (char *) &dir, sizeof(dir))
+                  != sizeof(dir))
+                {
+                  result = -1;
+                  errcode = EINVAL;
+                }
+            }
+            break;
+#endif
+
+          case __NR_flock:
+            result = flock(arg1, arg2);
+            errcode = errno;
+            break;
+
+          case __NR_msync:
+            result = msync((void *) arg1, arg2, arg3);
+            errcode = errno;
+            break;
+
+          case __NR_readv:
+            {
+              struct iovec vector;
+
+              vector = *((struct iovec *) t2h_addr(cb, &s, arg2));
+              translate_endian((void *) &vector, sizeof(vector));
+
+              result = readv(arg1, &vector, arg3);
+              errcode = errno;
+            }
+            break;
+
+          case __NR_writev:
+            {
+              struct iovec vector;
+
+              vector = *((struct iovec *) t2h_addr(cb, &s, arg2));
+              translate_endian((void *) &vector, sizeof(vector));
+
+              result = writev(arg1, &vector, arg3);
+              errcode = errno;
+            }
+            break;
+
+          case __NR_fdatasync:
+            result = fdatasync(arg1);
+            errcode = errno;
+            break;
+
+          case __NR_mlock:
+            result = mlock((void *) t2h_addr(cb, &s, arg1), arg2);
+            errcode = errno;
+            break;
+
+          case __NR_munlock:
+            result = munlock((void *) t2h_addr(cb, &s, arg1), arg2);
+            errcode = errno;
+            break;
+
+          case __NR_nanosleep:
+            {
+              struct timespec req, rem;
+
+              req = *((struct timespec *) t2h_addr(cb, &s, arg2));
+              translate_endian((void *) &req, sizeof(req));
+
+              result = nanosleep(&req, &rem);
+              errcode = errno;
+
+              if (result != 0)
+                break;
+
+              translate_endian((void *) &rem, sizeof(rem));
+              if ((s.write_mem) (cb, &s, arg2, (char *) &rem, sizeof(rem))
+                  != sizeof(rem))
+                {
+                  result = -1;
+                  errcode = EINVAL;
+                }
+            }
+            break;
+
+          case __NR_mremap: /* FIXME */
+            result = (int) mremap((void *) t2h_addr(cb, &s, arg1), arg2, arg3, arg4); 
+            errcode = errno;
+            break;
+
+          case __NR_getresuid:
+            {
+              uid_t ruid, euid, suid;
+
+              result = getresuid(&ruid, &euid, &suid);
+              errcode = errno;
+
+              if (result != 0)
+                break;
+
+              *((uid_t *) t2h_addr(cb, &s, arg1)) = conv_endian(ruid);
+              *((uid_t *) t2h_addr(cb, &s, arg2)) = conv_endian(euid);
+              *((uid_t *) t2h_addr(cb, &s, arg3)) = conv_endian(suid);
+            }
+            break;
+
+          case __NR_poll:
+            {
+              struct pollfd ufds;
+
+              ufds = *((struct pollfd *) t2h_addr(cb, &s, arg1));
+              ufds.fd = conv_endian(ufds.fd);
+              ufds.events = conv_endian16(ufds.events);
+              ufds.revents = conv_endian16(ufds.revents);
+
+              result = poll(&ufds, arg2, arg3);
+              errcode = errno;
+            }
+            break;
+
+          case __NR_getresgid:
+            {
+              uid_t rgid, egid, sgid;
+
+              result = getresgid(&rgid, &egid, &sgid);
+              errcode = errno;
+
+              if (result != 0)
+                break;
+
+              *((uid_t *) t2h_addr(cb, &s, arg1)) = conv_endian(rgid);
+              *((uid_t *) t2h_addr(cb, &s, arg2)) = conv_endian(egid);
+              *((uid_t *) t2h_addr(cb, &s, arg3)) = conv_endian(sgid);
+            }
+            break;
+
+          case __NR_pread:
+            result =  pread(arg1, (void *) t2h_addr(cb, &s, arg2), arg3, arg4); 
+            errcode = errno;
+            break;
+
+          case __NR_pwrite:
+            result =  pwrite(arg1, (void *) t2h_addr(cb, &s, arg2), arg3, arg4); 
+            errcode = errno;
+            break;
+
+          case __NR_chown:
+            result = chown((char *) t2h_addr(cb, &s, arg1), arg2, arg3);
+            errcode = errno;
+            break;
+
+          case __NR_getcwd:
+            result = (int) getcwd((char *) t2h_addr(cb, &s, arg1), arg2);
+            errcode = errno;
+            break;
+
+          case __NR_sendfile:
+            {
+              off_t offset;
+
+              offset = *((off_t *) t2h_addr(cb, &s, arg3));
+              offset = conv_endian(offset);
+
+              result = sendfile(arg1, arg2, &offset, arg3);
+              errcode = errno;
+
+              if (result != 0)
+                break;
+
+              *((off_t *) t2h_addr(cb, &s, arg3)) = conv_endian(offset);
+            }
+            break;
+
+          default:
+            result = -1;
+            errcode = ENOSYS;
+            break;
+          }
+        
+        if (result == -1)
+	  m32rbf_h_gr_set (current_cpu, 0, -errcode);
+        else
+	  m32rbf_h_gr_set (current_cpu, 0, result);
+	break;
+      }
+
+    case TRAP_BREAKPOINT:
+      sim_engine_halt (sd, current_cpu, NULL, pc,
+		       sim_stopped, SIM_SIGTRAP);
+      break;
+
+    case TRAP_FLUSH_CACHE:
+      /* Do nothing.  */
+      break;
+
+    default :
+      {
+	/* Use cr5 as EVB (EIT Vector Base) register.  */
+        USI new_pc = m32rbf_h_cr_get (current_cpu, 5) + 0x40 + num * 4;
+	return new_pc;
+      }
+    }
+
+  /* Fake an "rte" insn.  */
+  /* FIXME: Should duplicate all of rte processing.  */
+  return (pc & -4) + 4;
+}