292 lines
7.4 KiB
C
292 lines
7.4 KiB
C
/* Main simulator entry points for the M32R.
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Copyright (C) 1996, 1997 Free Software Foundation, Inc.
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Contributed by Cygnus Support.
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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 2, or (at your option)
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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 along
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with this program; if not, write to the Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "sim-main.h"
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#include <signal.h>
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#include "libiberty.h"
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#include "bfd.h"
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#include "sim-core.h"
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#include "cpu-sim.h"
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/* Global state until sim_open starts creating and returning it
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[and the other simulator i/f fns take it as an argument]. */
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struct sim_state sim_global_state;
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/* FIXME: Do we *need* to pass state to the semantic routines? */
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STATE current_state;
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/* Create an instance of the simulator. */
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SIM_DESC
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sim_open (kind, callback, abfd, argv)
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SIM_OPEN_KIND kind;
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host_callback *callback;
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struct _bfd *abfd;
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char **argv;
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{
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int i;
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SIM_DESC sd = &sim_global_state;
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/* FIXME: until we alloc one, use the global. */
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memset (sd, 0, sizeof (sim_global_state));
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STATE_OPEN_KIND (sd) = kind;
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STATE_CALLBACK (sd) = callback;
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if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK)
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return 0;
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#if 0 /* FIXME: 'twould be nice if we could do this */
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/* These options override any module options.
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Obviously ambiguity should be avoided, however the caller may wish to
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augment the meaning of an option. */
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if (extra_options != NULL)
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sim_add_option_table (sd, extra_options);
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#endif
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/* getopt will print the error message so we just have to exit if this fails.
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FIXME: Hmmm... in the case of gdb we need getopt to call
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print_filtered. */
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if (sim_parse_args (sd, argv) != SIM_RC_OK)
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{
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sim_module_uninstall (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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sim_module_uninstall (sd);
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return 0;
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}
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/* Initialize various cgen things not done by common framework. */
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cgen_init (sd);
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/* FIXME:wip */
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sim_core_attach (sd, NULL, attach_raw_memory, access_read_write_exec,
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0, 0, M32R_DEFAULT_MEM_SIZE, 0, NULL, NULL);
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/* Only needed for profiling, but the structure member is small. */
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for (i = 0; i < MAX_NR_PROCESSORS; ++i)
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memset (& CPU_M32R_PROFILE (STATE_CPU (sd, i)), 0,
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sizeof (CPU_M32R_PROFILE (STATE_CPU (sd, i))));
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return &sim_global_state;
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}
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void
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sim_close (sd, quitting)
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SIM_DESC sd;
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int quitting;
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{
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sim_module_uninstall (sd);
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}
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SIM_RC
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sim_create_inferior (sd, abfd, argv, envp)
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SIM_DESC sd;
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struct _bfd *abfd;
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char **argv;
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char **envp;
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{
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#if 0
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STATE_ARGV (sd) = sim_copy_argv (argv);
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STATE_ENVP (sd) = sim_copy_argv (envp);
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#endif
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if (abfd != NULL)
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STATE_CPU_CPU (sd, 0)->pc = bfd_get_start_address (abfd);
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else
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STATE_CPU_CPU (sd, 0)->pc = 0;
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return SIM_RC_OK;
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}
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int
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sim_stop (SIM_DESC sd)
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{
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return engine_stop (sd);
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}
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void
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sim_resume (sd, step, siggnal)
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SIM_DESC sd;
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int step, siggnal;
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{
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engine_run (sd, step, siggnal);
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}
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void
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sim_stop_reason (sd, reason, sigrc)
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SIM_DESC sd;
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enum sim_stop *reason;
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int *sigrc;
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{
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sim_cpu *cpu = STATE_CPU (sd, 0);
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/* Map sim_state to sim_stop. */
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switch (CPU_EXEC_STATE (cpu))
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{
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case EXEC_STATE_EXITED :
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*reason = sim_exited;
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*sigrc = CPU_HALT_SIGRC (cpu);
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break;
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case EXEC_STATE_STOPPED :
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*reason = sim_stopped;
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*sigrc = sim_signal_to_host (CPU_HALT_SIGRC (cpu));
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break;
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case EXEC_STATE_SIGNALLED :
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*reason = sim_signalled;
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*sigrc = sim_signal_to_host (CPU_HALT_SIGRC (cpu));
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break;
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}
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}
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/* PROFILE_CPU_CALLBACK */
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static void
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print_m32r_misc_cpu (SIM_CPU *cpu, int verbose)
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{
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SIM_DESC sd = CPU_STATE (cpu);
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char buf[20];
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if (CPU_PROFILE_FLAGS (cpu) [PROFILE_INSN_IDX])
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{
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sim_io_printf (sd, "Miscellaneous Statistics\n\n");
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sim_io_printf (sd, " %-*s %s\n\n",
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PROFILE_LABEL_WIDTH, "Fill nops:",
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sim_add_commas (buf, sizeof (buf),
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CPU_M32R_PROFILE (cpu).fillnop_count));
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}
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}
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void
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sim_info (sd, verbose)
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SIM_DESC sd;
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int verbose;
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{
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profile_print (sd, STATE_VERBOSE_P (sd), NULL, print_m32r_misc_cpu);
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}
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/* The contents of BUF are in target byte order. */
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void
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sim_fetch_register (sd, rn, buf)
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SIM_DESC sd;
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int rn;
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unsigned char *buf;
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{
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if (rn < 16)
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SETTWI (buf, STATE_CPU_CPU (sd, 0)->h_gr[rn]);
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else if (rn < 21)
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SETTWI (buf, STATE_CPU_CPU (sd, 0)->h_cr[rn - 16]);
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else switch (rn) {
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case PC_REGNUM:
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SETTWI (buf, STATE_CPU_CPU (sd, 0)->pc);
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break;
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case ACCL_REGNUM:
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SETTWI (buf, GETLODI (STATE_CPU_CPU (sd, 0)->h_accum));
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break;
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case ACCH_REGNUM:
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SETTWI (buf, GETHIDI (STATE_CPU_CPU (sd, 0)->h_accum));
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break;
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#if 0
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case 23: *reg = STATE_CPU_CPU (sd, 0)->h_cond; break;
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case 24: *reg = STATE_CPU_CPU (sd, 0)->h_sm; break;
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case 25: *reg = STATE_CPU_CPU (sd, 0)->h_bsm; break;
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case 26: *reg = STATE_CPU_CPU (sd, 0)->h_ie; break;
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case 27: *reg = STATE_CPU_CPU (sd, 0)->h_bie; break;
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case 28: *reg = STATE_CPU_CPU (sd, 0)->h_bcarry; break; /* rename: bc */
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case 29: memcpy (buf, &STATE_CPU_CPU (sd, 0)->h_bpc, sizeof(WI)); break; /* duplicate */
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#endif
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default: abort ();
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}
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}
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/* The contents of BUF are in target byte order. */
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void
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sim_store_register (sd, rn, buf)
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SIM_DESC sd;
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int rn;
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unsigned char *buf;
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{
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if (rn < 16)
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STATE_CPU_CPU (sd, 0)->h_gr[rn] = GETTWI (buf);
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else if (rn < 21)
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STATE_CPU_CPU (sd, 0)->h_cr[rn - 16] = GETTWI (buf);
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else switch (rn) {
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case PC_REGNUM:
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STATE_CPU_CPU (sd, 0)->pc = GETTWI (buf);
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break;
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case ACCL_REGNUM:
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SETLODI (STATE_CPU_CPU (sd, 0)->h_accum, GETTWI (buf));
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break;
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case ACCH_REGNUM:
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SETHIDI (STATE_CPU_CPU (sd, 0)->h_accum, GETTWI (buf));
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break;
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#if 0
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case 23: STATE_CPU_CPU (sd, 0)->h_cond = *reg; break;
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case 24: STATE_CPU_CPU (sd, 0)->h_sm = *reg; break;
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case 25: STATE_CPU_CPU (sd, 0)->h_bsm = *reg; break;
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case 26: STATE_CPU_CPU (sd, 0)->h_ie = *reg; break;
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case 27: STATE_CPU_CPU (sd, 0)->h_bie = *reg; break;
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case 28: STATE_CPU_CPU (sd, 0)->h_bcarry = *reg; break; /* rename: bc */
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case 29: memcpy (&STATE_CPU_CPU (sd, 0)->h_bpc, buf, sizeof(DI)); break; /* duplicate */
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#endif
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}
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}
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int
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sim_read (sd, addr, buf, len)
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SIM_DESC sd;
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SIM_ADDR addr;
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unsigned char *buf;
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int len;
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{
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#if 1
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return sim_core_read_buffer (sd, NULL, sim_core_read_map,
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buf, addr, len);
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#else
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return (*STATE_MEM_READ (sd)) (sd, addr, buf, len);
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#endif
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}
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int
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sim_write (sd, addr, buf, len)
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SIM_DESC sd;
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SIM_ADDR addr;
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unsigned char *buf;
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int len;
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{
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#if 1
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return sim_core_write_buffer (sd, NULL, sim_core_write_map,
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buf, addr, len);
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#else
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return (*STATE_MEM_WRITE (sd)) (sd, addr, buf, len);
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#endif
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}
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void
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sim_do_command (sd, cmd)
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SIM_DESC sd;
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char *cmd;
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{
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sim_io_error (sd, "sim_do_command - unimplemented");
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}
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