Initial creation of sourceware repository

sim/fr30/sim-if.c

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+/* Main simulator entry points specific to the FR30.
+   Copyright (C) 1998, 1999 Free Software Foundation, Inc.
+   Contributed by Cygnus Solutions.
+
+This file is part of the GNU simulators.
+
+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"
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#include "sim-options.h"
+#include "libiberty.h"
+#include "bfd.h"
+
+static void free_state (SIM_DESC);
+static void print_fr30_misc_cpu (SIM_CPU *cpu, int verbose);
+
+/* Records simulator descriptor so utilities like fr30_dump_regs can be
+   called from gdb.  */
+SIM_DESC current_state;
+
+/* Cover function of sim_state_free to free the cpu buffers as well.  */
+
+static void
+free_state (SIM_DESC sd)
+{
+  if (STATE_MODULES (sd) != NULL)
+    sim_module_uninstall (sd);
+  sim_cpu_free_all (sd);
+  sim_state_free (sd);
+}
+
+/* Create an instance of the simulator.  */
+
+SIM_DESC
+sim_open (kind, callback, abfd, argv)
+     SIM_OPEN_KIND kind;
+     host_callback *callback;
+     struct _bfd *abfd;
+     char **argv;
+{
+  char c;
+  int i;
+  SIM_DESC sd = sim_state_alloc (kind, callback);
+
+  /* The cpu data is kept in a separately allocated chunk of memory.  */
+  if (sim_cpu_alloc_all (sd, 1, cgen_cpu_max_extra_bytes ()) != SIM_RC_OK)
+    {
+      free_state (sd);
+      return 0;
+    }
+
+#if 0 /* FIXME: pc is in mach-specific struct */
+  /* FIXME: watchpoints code shouldn't need this */
+  {
+    SIM_CPU *current_cpu = STATE_CPU (sd, 0);
+    STATE_WATCHPOINTS (sd)->pc = &(PC);
+    STATE_WATCHPOINTS (sd)->sizeof_pc = sizeof (PC);
+  }
+#endif
+
+  if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK)
+    {
+      free_state (sd);
+      return 0;
+    }
+
+#if 0 /* FIXME: 'twould be nice if we could do this */
+  /* These options override any module options.
+     Obviously ambiguity should be avoided, however the caller may wish to
+     augment the meaning of an option.  */
+  if (extra_options != NULL)
+    sim_add_option_table (sd, extra_options);
+#endif
+
+  /* getopt will print the error message so we just have to exit if this fails.
+     FIXME: Hmmm...  in the case of gdb we need getopt to call
+     print_filtered.  */
+  if (sim_parse_args (sd, argv) != SIM_RC_OK)
+    {
+      free_state (sd);
+      return 0;
+    }
+
+#if 0
+  /* Allocate a handler for the control registers and other devices
+     if no memory for that range has been allocated by the user.
+     All are allocated in one chunk to keep things from being
+     unnecessarily complicated.  */
+  if (sim_core_read_buffer (sd, NULL, read_map, &c, FR30_DEVICE_ADDR, 1) == 0)
+    sim_core_attach (sd, NULL,
+		     0 /*level*/,
+		     access_read_write,
+		     0 /*space ???*/,
+		     FR30_DEVICE_ADDR, FR30_DEVICE_LEN /*nr_bytes*/,
+		     0 /*modulo*/,
+		     &fr30_devices,
+		     NULL /*buffer*/);
+#endif
+
+  /* Allocate core managed memory if none specified by user.
+     Use address 4 here in case the user wanted address 0 unmapped.  */
+  if (sim_core_read_buffer (sd, NULL, read_map, &c, 4, 1) == 0)
+    sim_do_commandf (sd, "memory region 0,0x%lx", FR30_DEFAULT_MEM_SIZE);
+
+  /* check for/establish the reference program image */
+  if (sim_analyze_program (sd,
+			   (STATE_PROG_ARGV (sd) != NULL
+			    ? *STATE_PROG_ARGV (sd)
+			    : NULL),
+			   abfd) != SIM_RC_OK)
+    {
+      free_state (sd);
+      return 0;
+    }
+
+  /* Establish any remaining configuration options.  */
+  if (sim_config (sd) != SIM_RC_OK)
+    {
+      free_state (sd);
+      return 0;
+    }
+
+  if (sim_post_argv_init (sd) != SIM_RC_OK)
+    {
+      free_state (sd);
+      return 0;
+    }
+
+  /* Open a copy of the cpu descriptor table.  */
+  {
+    CGEN_CPU_DESC cd = fr30_cgen_cpu_open (STATE_ARCHITECTURE (sd)->mach,
+					   CGEN_ENDIAN_BIG);
+    for (i = 0; i < MAX_NR_PROCESSORS; ++i)
+      {
+	SIM_CPU *cpu = STATE_CPU (sd, i);
+	CPU_CPU_DESC (cpu) = cd;
+	CPU_DISASSEMBLER (cpu) = sim_cgen_disassemble_insn;
+      }
+    fr30_cgen_init_dis (cd);
+  }
+
+  /* Initialize various cgen things not done by common framework.
+     Must be done after fr30_cgen_cpu_open.  */
+  cgen_init (sd);
+
+  /* Store in a global so things like sparc32_dump_regs can be invoked
+     from the gdb command line.  */
+  current_state = sd;
+
+  return sd;
+}
+
+void
+sim_close (sd, quitting)
+     SIM_DESC sd;
+     int quitting;
+{
+  fr30_cgen_cpu_close (CPU_CPU_DESC (STATE_CPU (sd, 0)));
+  sim_module_uninstall (sd);
+}
+
+SIM_RC
+sim_create_inferior (sd, abfd, argv, envp)
+     SIM_DESC sd;
+     struct _bfd *abfd;
+     char **argv;
+     char **envp;
+{
+  SIM_CPU *current_cpu = STATE_CPU (sd, 0);
+  SIM_ADDR addr;
+
+  if (abfd != NULL)
+    addr = bfd_get_start_address (abfd);
+  else
+    addr = 0;
+  sim_pc_set (current_cpu, addr);
+
+#if 0
+  STATE_ARGV (sd) = sim_copy_argv (argv);
+  STATE_ENVP (sd) = sim_copy_argv (envp);
+#endif
+
+  return SIM_RC_OK;
+}
+
+void
+sim_do_command (sd, cmd)
+     SIM_DESC sd;
+     char *cmd;
+{ 
+  if (sim_args_command (sd, cmd) != SIM_RC_OK)
+    sim_io_eprintf (sd, "Unknown command `%s'\n", cmd);
+}