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/* Main simulator entry points specific to the FRV.
Copyright (C) 1998-2024 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/>. */
/* This must come before any other includes. */
#include "defs.h"
#include <stdlib.h>
#include "sim/callback.h"
#define WANT_CPU
#define WANT_CPU_FRVBF
#include "sim-main.h"
#include "sim-options.h"
#include "libiberty.h"
#include "bfd.h"
#include "bfd/elf-bfd.h"
static void free_state (SIM_DESC);
/* 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);
}
extern const SIM_MACH * const frv_sim_machs[];
/* Create an instance of the simulator. */
SIM_DESC
sim_open (SIM_OPEN_KIND kind, host_callback *callback, bfd *abfd,
char * const *argv)
{
char c;
int i;
unsigned long elf_flags = 0;
SIM_DESC sd = sim_state_alloc (kind, callback);
/* Set default options before parsing user options. */
STATE_MACHS (sd) = frv_sim_machs;
STATE_MODEL_NAME (sd) = "fr500";
current_alignment = STRICT_ALIGNMENT;
current_target_byte_order = BFD_ENDIAN_BIG;
/* The cpu data is kept in a separately allocated chunk of memory. */
if (sim_cpu_alloc_all_extra (sd, 0, sizeof (struct frv_sim_cpu)) != SIM_RC_OK)
{
free_state (sd);
return 0;
}
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);
/* The parser will print an error message for us, so we silently return. */
if (sim_parse_args (sd, argv) != SIM_RC_OK)
{
free_state (sd);
return 0;
}
/* 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%x", FRV_DEFAULT_MEM_SIZE);
/* check for/establish the reference program image */
if (sim_analyze_program (sd, STATE_PROG_FILE (sd), 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)
{
const 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);
}
/* CPU specific initialization. */
for (i = 0; i < MAX_NR_PROCESSORS; ++i)
{
SIM_CPU* cpu = STATE_CPU (sd, i);
frv_initialize (cpu, sd);
}
return sd;
}
void
frv_sim_close (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));
}
}
SIM_RC
sim_create_inferior (SIM_DESC sd, bfd *abfd, char * const *argv,
char * const *env)
{
SIM_CPU *current_cpu = STATE_CPU (sd, 0);
host_callback *cb = STATE_CALLBACK (sd);
bfd_vma addr;
if (abfd != NULL)
addr = bfd_get_start_address (abfd);
else
addr = 0;
sim_pc_set (current_cpu, addr);
/* Standalone mode (i.e. `run`) will take care of the argv for us in
sim_open() -> sim_parse_args(). But in debug mode (i.e. 'target sim'
with `gdb`), we need to handle it because the user can change the
argv on the fly via gdb's 'run'. */
if (STATE_PROG_ARGV (sd) != argv)
{
freeargv (STATE_PROG_ARGV (sd));
STATE_PROG_ARGV (sd) = dupargv (argv);
}
if (STATE_PROG_ENVP (sd) != env)
{
freeargv (STATE_PROG_ENVP (sd));
STATE_PROG_ENVP (sd) = dupargv (env);
}
cb->argv = STATE_PROG_ARGV (sd);
cb->envp = STATE_PROG_ENVP (sd);
return SIM_RC_OK;
}
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