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- /* Main simulator entry points specific to the IQ2000.
- Copyright (C) 2000-2022 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 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 "sim-main.h"
- #include <stdlib.h>
- #include "sim/callback.h"
- #include "sim-options.h"
- #include "libiberty.h"
- #include "bfd.h"
- static void free_state (SIM_DESC);
- /* Cover function for sim_cgen_disassemble_insn. */
- static void
- iq2000bf_disassemble_insn (SIM_CPU *cpu, const CGEN_INSN *insn,
- const ARGBUF *abuf, IADDR pc, char *buf)
- {
- sim_cgen_disassemble_insn(cpu, insn, abuf, pc, buf);
- }
- /* 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 iq2000_sim_machs[];
- /* Create an instance of the simulator. */
- SIM_DESC
- sim_open (SIM_OPEN_KIND kind, host_callback *callback, struct bfd *abfd,
- char * const *argv)
- {
- char c;
- int i;
- SIM_DESC sd = sim_state_alloc (kind, callback);
- /* Set default options before parsing user options. */
- STATE_MACHS (sd) = iq2000_sim_machs;
- STATE_MODEL_NAME (sd) = "iq2000";
- 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 (sd, 1) != SIM_RC_OK)
- {
- free_state (sd);
- return 0;
- }
- if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK)
- {
- free_state (sd);
- return 0;
- }
- /* 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. */
- sim_do_commandf (sd, "memory region 0x%x,0x%x", IQ2000_INSN_VALUE, IQ2000_INSN_MEM_SIZE);
- sim_do_commandf (sd, "memory region 0x%x,0x%x", IQ2000_DATA_VALUE, IQ2000_DATA_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;
- }
- /* 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 = iq2000_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) = iq2000bf_disassemble_insn;
- }
- iq2000_cgen_init_dis (cd);
- }
- return sd;
- }
- SIM_RC
- sim_create_inferior (SIM_DESC sd, struct bfd *abfd, char * const *argv,
- char * const *env)
- {
- SIM_CPU *current_cpu = STATE_CPU (sd, 0);
- host_callback *cb = STATE_CALLBACK (sd);
- SIM_ADDR addr;
- if (abfd != NULL)
- addr = bfd_get_start_address (abfd);
- else
- addr = CPU2INSN(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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