d414eb3e7f
This kills off another compile-time option by moving the setting to the individual arch runtimes. This will allow dynamic selection by the arch when doing a single build with multiple arches. The sim_model_init rework is a little funky. In the past it was disabled entirely if no default model was set. We maintain the spirit of the logic by gating the fallback logic on whether the port has defined any models.
160 lines
4.2 KiB
C
160 lines
4.2 KiB
C
/* Main simulator entry points specific to the IQ2000.
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Copyright (C) 2000-2021 Free Software Foundation, Inc.
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Contributed by Cygnus Solutions.
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This file is part of the GNU simulators.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* This must come before any other includes. */
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#include "defs.h"
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#include "sim-main.h"
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#include <stdlib.h>
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#include "sim-options.h"
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#include "libiberty.h"
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#include "bfd.h"
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static void free_state (SIM_DESC);
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/* Cover function for sim_cgen_disassemble_insn. */
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void
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iq2000bf_disassemble_insn (SIM_CPU *cpu, const CGEN_INSN *insn,
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const ARGBUF *abuf, IADDR pc, char *buf)
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{
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sim_cgen_disassemble_insn(cpu, insn, abuf, pc, buf);
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}
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/* Cover function of sim_state_free to free the cpu buffers as well. */
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static void
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free_state (SIM_DESC sd)
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{
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if (STATE_MODULES (sd) != NULL)
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sim_module_uninstall (sd);
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sim_cpu_free_all (sd);
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sim_state_free (sd);
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}
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extern const SIM_MACH * const iq2000_sim_machs[];
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/* Create an instance of the simulator. */
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SIM_DESC
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sim_open (SIM_OPEN_KIND kind, host_callback *callback, struct bfd *abfd,
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char * const *argv)
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{
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char c;
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int i;
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SIM_DESC sd = sim_state_alloc (kind, callback);
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/* Set default options before parsing user options. */
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STATE_MACHS (sd) = iq2000_sim_machs;
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STATE_MODEL_NAME (sd) = "iq2000";
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current_alignment = STRICT_ALIGNMENT;
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current_target_byte_order = BFD_ENDIAN_BIG;
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/* The cpu data is kept in a separately allocated chunk of memory. */
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if (sim_cpu_alloc_all (sd, 1) != SIM_RC_OK)
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{
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free_state (sd);
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return 0;
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}
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if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK)
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{
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free_state (sd);
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return 0;
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}
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/* The parser will print an error message for us, so we silently return. */
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if (sim_parse_args (sd, argv) != SIM_RC_OK)
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{
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free_state (sd);
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return 0;
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}
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/* Allocate core managed memory. */
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sim_do_commandf (sd, "memory region 0x%lx,0x%lx", IQ2000_INSN_VALUE, IQ2000_INSN_MEM_SIZE);
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sim_do_commandf (sd, "memory region 0x%lx,0x%lx", IQ2000_DATA_VALUE, IQ2000_DATA_MEM_SIZE);
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/* check for/establish the reference program image */
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if (sim_analyze_program (sd,
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(STATE_PROG_ARGV (sd) != NULL
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? *STATE_PROG_ARGV (sd)
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: NULL),
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abfd) != SIM_RC_OK)
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{
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free_state (sd);
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return 0;
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}
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/* Establish any remaining configuration options. */
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if (sim_config (sd) != SIM_RC_OK)
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{
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free_state (sd);
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return 0;
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}
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if (sim_post_argv_init (sd) != SIM_RC_OK)
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{
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free_state (sd);
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return 0;
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}
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/* Open a copy of the cpu descriptor table. */
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{
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CGEN_CPU_DESC cd = iq2000_cgen_cpu_open_1 (STATE_ARCHITECTURE (sd)->printable_name,
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CGEN_ENDIAN_BIG);
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for (i = 0; i < MAX_NR_PROCESSORS; ++i)
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{
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SIM_CPU *cpu = STATE_CPU (sd, i);
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CPU_CPU_DESC (cpu) = cd;
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CPU_DISASSEMBLER (cpu) = iq2000bf_disassemble_insn;
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}
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iq2000_cgen_init_dis (cd);
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}
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return sd;
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}
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SIM_RC
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sim_create_inferior (SIM_DESC sd, struct bfd *abfd, char * const *argv,
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char * const *envp)
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{
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SIM_CPU *current_cpu = STATE_CPU (sd, 0);
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SIM_ADDR addr;
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if (abfd != NULL)
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addr = bfd_get_start_address (abfd);
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else
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addr = CPU2INSN(0);
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sim_pc_set (current_cpu, addr);
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/* Standalone mode (i.e. `run`) will take care of the argv for us in
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sim_open() -> sim_parse_args(). But in debug mode (i.e. 'target sim'
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with `gdb`), we need to handle it because the user can change the
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argv on the fly via gdb's 'run'. */
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if (STATE_PROG_ARGV (sd) != argv)
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{
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freeargv (STATE_PROG_ARGV (sd));
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STATE_PROG_ARGV (sd) = dupargv (argv);
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}
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return SIM_RC_OK;
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}
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