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/* This file is part of the program psim.
Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>
Copyright (C) 1997, Free Software Foundation
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 2 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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdarg.h>
#include <ctype.h>
#include "bfd.h"
#include "sim-main.h"
#include "sim-utils.h"
#include "sim-options.h"
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#else
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#endif
#define SIM_ADDR unsigned
SIM_DESC
sim_open (SIM_OPEN_KIND kind,
host_callback *callback,
struct _bfd *abfd,
char **argv)
{
char *buf;
SIM_DESC sd = sim_state_alloc (kind, callback);
if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK)
return 0;
#define TIC80_MEM_START 0x2000000
#define TIC80_MEM_SIZE 0x100000
/* main memory */
asprintf (&buf, "memory region 0x%lx,0x%lx",
TIC80_MEM_START, TIC80_MEM_SIZE);
sim_do_command (sd, buf);
free (buf);
/* interrupt memory */
sim_do_command (sd, "memory region 0x1010000,0x1000");
/* some memory at zero */
sim_do_command (sd, "memory region 0,0x100000");
/* 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)
{
/* Uninstall the modules to avoid memory leaks,
file descriptor leaks, etc. */
sim_module_uninstall (sd);
return 0;
}
/* check for/establish the a reference program image */
if (sim_analyze_program (sd,
(STATE_PROG_ARGV (sd) != NULL
? *STATE_PROG_ARGV (sd)
: NULL),
abfd) != SIM_RC_OK)
{
sim_module_uninstall (sd);
return 0;
}
/* establish any remaining configuration options */
if (sim_config (sd) != SIM_RC_OK)
{
sim_module_uninstall (sd);
return 0;
}
if (sim_post_argv_init (sd) != SIM_RC_OK)
{
/* Uninstall the modules to avoid memory leaks,
file descriptor leaks, etc. */
sim_module_uninstall (sd);
return 0;
}
/* FIXME: for now */
return sd;
}
void
sim_close (SIM_DESC sd, int quitting)
{
/* Uninstall the modules to avoid memory leaks,
file descriptor leaks, etc. */
sim_module_uninstall (sd);
}
/* FIXME - these magic numbers need to be moved elsewhere */
#define SP_REGNUM 1 /* Contains address of top of stack */
#define FP_REGNUM 31 /* Contains address of executing stack frame */
#define PC_REGNUM 32 /* Contains program counter (FIXME?) */
#define NPC_REGNUM 33 /* Contains the next program counter (FIXME?) */
#define A0_REGNUM 34 /* Accumulator register 0 */
#define A3_REGNUM 37 /* Accumulator register 1 */
#define R0_REGNUM 0 /* General Purpose Register 0 - for sim */
#define Rn_REGNUM 31 /* Last General Purpose Register - for sim */
#define An_REGNUM A3_REGNUM /* Last Accumulator register - for sim */
int
sim_fetch_register (SIM_DESC sd, int regnr, unsigned char *buf, int length)
{
if (regnr == R0_REGNUM)
memset (buf, 0, sizeof (unsigned32));
else if (regnr > R0_REGNUM && regnr <= Rn_REGNUM)
*(unsigned32*)buf = H2T_4 (STATE_CPU (sd, 0)->reg[regnr - R0_REGNUM]);
else if (regnr == PC_REGNUM)
*(unsigned32*)buf = H2T_4 (STATE_CPU (sd, 0)->cia.ip);
else if (regnr == NPC_REGNUM)
*(unsigned32*)buf = H2T_4 (STATE_CPU (sd, 0)->cia.dp);
else if (regnr >= A0_REGNUM && regnr <= An_REGNUM)
*(unsigned64*)buf = H2T_8 (STATE_CPU (sd, 0)->acc[regnr - A0_REGNUM]);
else
sim_io_error (sd, "sim_fetch_register - unknown register nr %d", regnr);
return -1;
}
int
sim_store_register (SIM_DESC sd, int regnr, unsigned char *buf, int length)
{
if (regnr >= R0_REGNUM && regnr <= Rn_REGNUM)
STATE_CPU (sd, 0)->reg[regnr - R0_REGNUM] = T2H_4 (*(unsigned32*)buf);
else if (regnr == PC_REGNUM)
STATE_CPU (sd, 0)->cia.ip = T2H_4 (*(unsigned32*)buf);
else if (regnr == NPC_REGNUM)
STATE_CPU (sd, 0)->cia.dp = T2H_4 (*(unsigned32*)buf);
else if (regnr >= A0_REGNUM && regnr <= An_REGNUM)
STATE_CPU (sd, 0)->acc[regnr - A0_REGNUM] = T2H_8 (*(unsigned64*)buf);
else
sim_io_error (sd, "sim_store_register - unknown register nr %d", regnr);
return -1;
}
SIM_RC
sim_create_inferior (SIM_DESC sd,
struct _bfd *abfd,
char **argv,
char **envp)
{
/* clear all registers */
memset (&STATE_CPU (sd, 0)->reg, 0, sizeof (STATE_CPU (sd, 0)->reg));
memset (&STATE_CPU (sd, 0)->acc, 0, sizeof (STATE_CPU (sd, 0)->acc));
memset (&STATE_CPU (sd, 0)->cr, 0, sizeof (STATE_CPU (sd, 0)->cr));
STATE_CPU (sd, 0)->is_user_mode = 0;
memset (&STATE_CPU (sd, 0)->cia, 0, sizeof (STATE_CPU (sd, 0)->cia));
/* initialize any modules */
sim_module_init (sd);
/* set the stack-pointer/program counter */
if (abfd != NULL)
STATE_CPU (sd, 0)->cia.ip = bfd_get_start_address (abfd);
else
STATE_CPU (sd, 0)->cia.ip = 0;
STATE_CPU (sd, 0)->cia.dp = (STATE_CPU (sd, 0)->cia.ip
+ sizeof (instruction_word));
STATE_CPU (sd, 0)->cr[IE_CR] |= IE_CR_IE;
STATE_CPU (sd, 0)->reg[1] = TIC80_MEM_START + TIC80_MEM_SIZE - 16;
return SIM_RC_OK;
}
void
sim_do_command (SIM_DESC sd, char *cmd)
{
if (sim_args_command (sd, cmd) != SIM_RC_OK)
sim_io_eprintf (sd, "Unknown command `%s'\n", cmd);
}
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