[thirdparty/binutils-gdb.git] / sim / frv / sim-if.c

/* Main simulator entry points specific to the FRV.
   Copyright (C) 1998-2013 Free Software Foundation, Inc.
   Contributed by Red Hat.

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 3 of the License, 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, see <http://www.gnu.org/licenses/>.  */

#define WANT_CPU
#define WANT_CPU_FRVBF
#include "sim-main.h"
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include "sim-options.h"
#include "libiberty.h"
#include "bfd.h"
#include "elf-bfd.h"

static void free_state (SIM_DESC);
static void print_frv_misc_cpu (SIM_CPU *cpu, int verbose);

/* Records simulator descriptor so utilities like frv_dump_regs can be
   called from gdb.  */
SIM_DESC current_state;
\f
/* 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;
     bfd *abfd;
     char **argv;
{
  char c;
  int i;
  unsigned long elf_flags = 0;
  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;
    }

  /* These options override any module options.
     Obviously ambiguity should be avoided, however the caller may wish to
     augment the meaning of an option.  */
  sim_add_option_table (sd, NULL, frv_options);

  /* 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, FRV_DEVICE_ADDR, 1) == 0)
    sim_core_attach (sd, NULL,
		     0 /*level*/,
		     access_read_write,
		     0 /*space ???*/,
		     FRV_DEVICE_ADDR, FRV_DEVICE_LEN /*nr_bytes*/,
		     0 /*modulo*/,
		     &frv_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", FRV_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;
    }

  /* set machine and architecture correctly instead of defaulting to frv */
  {
    bfd *prog_bfd = STATE_PROG_BFD (sd);
    if (prog_bfd != NULL)
      {
	struct elf_backend_data *backend_data;

	if (bfd_get_arch (prog_bfd) != bfd_arch_frv)
	  {
	    sim_io_eprintf (sd, "%s: \"%s\" is not a FRV object file\n",
			    STATE_MY_NAME (sd),
			    bfd_get_filename (prog_bfd));
	    free_state (sd);
	    return 0;
	  }

	backend_data = get_elf_backend_data (prog_bfd);

	if (backend_data != NULL)
	  backend_data->elf_backend_object_p (prog_bfd);

	elf_flags = elf_elfheader (prog_bfd)->e_flags;
      }
  }

  /* 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 = frv_cgen_cpu_open_1 (STATE_ARCHITECTURE (sd)->printable_name,
					     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;
	CPU_ELF_FLAGS (cpu) = elf_flags;
      }
    frv_cgen_init_dis (cd);
  }

  /* Initialize various cgen things not done by common framework.
     Must be done after frv_cgen_cpu_open.  */
  cgen_init (sd);

  /* CPU specific initialization.  */
  for (i = 0; i < MAX_NR_PROCESSORS; ++i)
    {
      SIM_CPU* cpu = STATE_CPU (sd, i);
      frv_initialize (cpu, 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;
{
  int i;
  /* Terminate cache support.  */
  for (i = 0; i < MAX_NR_PROCESSORS; ++i)
    {
      SIM_CPU* cpu = STATE_CPU (sd, i);
      frv_cache_term (CPU_INSN_CACHE (cpu));
      frv_cache_term (CPU_DATA_CACHE (cpu));
    }

  frv_cgen_cpu_close (CPU_CPU_DESC (STATE_CPU (sd, 0)));
  sim_module_uninstall (sd);
}
\f
SIM_RC
sim_create_inferior (sd, abfd, argv, envp)
     SIM_DESC sd;
     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;
}
Commit	Line	Data
b34f6357	1	/* Main simulator entry points specific to the FRV.
8acc9f48	2	Copyright (C) 1998-2013 Free Software Foundation, Inc.
b34f6357 DB	3	Contributed by Red Hat.
	4
	5	This file is part of the GNU simulators.
	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
4744ac1b JB	9	the Free Software Foundation; either version 3 of the License, or
4744ac1b JB	10	(at your option) any later version.
b34f6357 DB	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
4744ac1b JB	17	You should have received a copy of the GNU General Public License
4744ac1b JB	18	along with this program. If not, see <http://www.gnu.org/licenses/>. */
b34f6357 DB	19
	20	#define WANT_CPU
	21	#define WANT_CPU_FRVBF
	22	#include "sim-main.h"
	23	#ifdef HAVE_STDLIB_H
	24	#include <stdlib.h>
	25	#endif
	26	#include "sim-options.h"
	27	#include "libiberty.h"
	28	#include "bfd.h"
	29	#include "elf-bfd.h"
	30
	31	static void free_state (SIM_DESC);
	32	static void print_frv_misc_cpu (SIM_CPU *cpu, int verbose);
	33
	34	/* Records simulator descriptor so utilities like frv_dump_regs can be
	35	called from gdb. */
	36	SIM_DESC current_state;
	37	\f
	38	/* Cover function of sim_state_free to free the cpu buffers as well. */
	39
	40	static void
	41	free_state (SIM_DESC sd)
	42	{
	43	if (STATE_MODULES (sd) != NULL)
	44	sim_module_uninstall (sd);
	45	sim_cpu_free_all (sd);
	46	sim_state_free (sd);
	47	}
	48
	49	/* Create an instance of the simulator. */
	50
	51	SIM_DESC
	52	sim_open (kind, callback, abfd, argv)
	53	SIM_OPEN_KIND kind;
	54	host_callback *callback;
	55	bfd *abfd;
	56	char **argv;
	57	{
	58	char c;
	59	int i;
	60	unsigned long elf_flags = 0;
	61	SIM_DESC sd = sim_state_alloc (kind, callback);
	62
	63	/* The cpu data is kept in a separately allocated chunk of memory. */
	64	if (sim_cpu_alloc_all (sd, 1, cgen_cpu_max_extra_bytes ()) != SIM_RC_OK)
	65	{
	66	free_state (sd);
	67	return 0;
	68	}
	69
	70	#if 0 /* FIXME: pc is in mach-specific struct */
	71	/* FIXME: watchpoints code shouldn't need this */
	72	{
	73	SIM_CPU *current_cpu = STATE_CPU (sd, 0);
	74	STATE_WATCHPOINTS (sd)->pc = &(PC);
	75	STATE_WATCHPOINTS (sd)->sizeof_pc = sizeof (PC);
	76	}
	77	#endif
	78
	79	if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK)
	80	{
	81	free_state (sd);
	82	return 0;
83	}
84
85	/* These options override any module options.
86	Obviously ambiguity should be avoided, however the caller may wish to
87	augment the meaning of an option. */
88	sim_add_option_table (sd, NULL, frv_options);
89
90	/* getopt will print the error message so we just have to exit if this fails.
91	FIXME: Hmmm... in the case of gdb we need getopt to call
92	print_filtered. */
93	if (sim_parse_args (sd, argv) != SIM_RC_OK)
94	{
95	free_state (sd);
96	return 0;
97	}
98
99	#if 0
100	/* Allocate a handler for the control registers and other devices
101	if no memory for that range has been allocated by the user.
102	All are allocated in one chunk to keep things from being
103	unnecessarily complicated. */
104	if (sim_core_read_buffer (sd, NULL, read_map, &c, FRV_DEVICE_ADDR, 1) == 0)
105	sim_core_attach (sd, NULL,
106	0 /level/,
107	access_read_write,
108	0 /space ???/,
109	FRV_DEVICE_ADDR, FRV_DEVICE_LEN /nr_bytes/,
110	0 /modulo/,
111	&frv_devices,
112	NULL /buffer/);
113	#endif
114
115	/* Allocate core managed memory if none specified by user.
116	Use address 4 here in case the user wanted address 0 unmapped. */
117	if (sim_core_read_buffer (sd, NULL, read_map, &c, 4, 1) == 0)
118	sim_do_commandf (sd, "memory region 0,0x%lx", FRV_DEFAULT_MEM_SIZE);
119
120	/* check for/establish the reference program image */
121	if (sim_analyze_program (sd,
122	(STATE_PROG_ARGV (sd) != NULL
123	? *STATE_PROG_ARGV (sd)
124	: NULL),
125	abfd) != SIM_RC_OK)
126	{
127	free_state (sd);
128	return 0;
129	}
130
131	/* set machine and architecture correctly instead of defaulting to frv */
132	{
133	bfd *prog_bfd = STATE_PROG_BFD (sd);
134	if (prog_bfd != NULL)
135	{
136	struct elf_backend_data *backend_data;
137
138	if (bfd_get_arch (prog_bfd) != bfd_arch_frv)
139	{
140	sim_io_eprintf (sd, "%s: \"%s\" is not a FRV object file\n",
141	STATE_MY_NAME (sd),
142	bfd_get_filename (prog_bfd));
143	free_state (sd);
144	return 0;
145	}
146
147	backend_data = get_elf_backend_data (prog_bfd);
148
149	if (backend_data != NULL)
150	backend_data->elf_backend_object_p (prog_bfd);
151
152	elf_flags = elf_elfheader (prog_bfd)->e_flags;
153	}
154	}
155
156	/* Establish any remaining configuration options. */
157	if (sim_config (sd) != SIM_RC_OK)
158	{
159	free_state (sd);
160	return 0;
161	}
162
163	if (sim_post_argv_init (sd) != SIM_RC_OK)
164	{
165	free_state (sd);
166	return 0;
167	}
168
169	/* Open a copy of the cpu descriptor table. */
170	{
171	CGEN_CPU_DESC cd = frv_cgen_cpu_open_1 (STATE_ARCHITECTURE (sd)->printable_name,
172	CGEN_ENDIAN_BIG);
173	for (i = 0; i < MAX_NR_PROCESSORS; ++i)
174	{
175	SIM_CPU *cpu = STATE_CPU (sd, i);
176	CPU_CPU_DESC (cpu) = cd;
177	CPU_DISASSEMBLER (cpu) = sim_cgen_disassemble_insn;
178	CPU_ELF_FLAGS (cpu) = elf_flags;
179	}
180	frv_cgen_init_dis (cd);
181	}
182
183	/* Initialize various cgen things not done by common framework.
184	Must be done after frv_cgen_cpu_open. */
185	cgen_init (sd);
186
187	/* CPU specific initialization. */
188	for (i = 0; i < MAX_NR_PROCESSORS; ++i)
189	{
190	SIM_CPU* cpu = STATE_CPU (sd, i);
191	frv_initialize (cpu, sd);
192	}
193
194	/* Store in a global so things like sparc32_dump_regs can be invoked
195	from the gdb command line. */
196	current_state = sd;
197
198	return sd;
199	}
200
201	void
202	sim_close (sd, quitting)
203	SIM_DESC sd;
204	int quitting;
205	{
206	int i;
207	/* Terminate cache support. */
208	for (i = 0; i < MAX_NR_PROCESSORS; ++i)
209	{
210	SIM_CPU* cpu = STATE_CPU (sd, i);
211	frv_cache_term (CPU_INSN_CACHE (cpu));
212	frv_cache_term (CPU_DATA_CACHE (cpu));
213	}
214
215	frv_cgen_cpu_close (CPU_CPU_DESC (STATE_CPU (sd, 0)));
216	sim_module_uninstall (sd);
217	}
218	\f
219	SIM_RC
220	sim_create_inferior (sd, abfd, argv, envp)
221	SIM_DESC sd;
222	bfd *abfd;
223	char **argv;
224	char **envp;
225	{
226	SIM_CPU *current_cpu = STATE_CPU (sd, 0);
227	SIM_ADDR addr;
228
229	if (abfd != NULL)
230	addr = bfd_get_start_address (abfd);
231	else
232	addr = 0;
233	sim_pc_set (current_cpu, addr);
234
235	#if 0
236	STATE_ARGV (sd) = sim_copy_argv (argv);
237	STATE_ENVP (sd) = sim_copy_argv (envp);
238	#endif
239
240	return SIM_RC_OK;
241	}