mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-09 04:21:49 +08:00
251 lines
6.6 KiB
C
251 lines
6.6 KiB
C
/* 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 <signal.h> /* FIXME - should be machine dependant version */
|
|
#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
|
|
|
|
/* Structures used by the simulator, for gdb just have static structures */
|
|
|
|
struct sim_state simulation = { 0 };
|
|
|
|
|
|
SIM_DESC
|
|
sim_open (SIM_OPEN_KIND kind, char **argv)
|
|
{
|
|
SIM_DESC sd = &simulation;
|
|
STATE_OPEN_KIND (sd) = kind;
|
|
STATE_MAGIC (sd) = SIM_MAGIC_NUMBER;
|
|
|
|
if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK)
|
|
return 0;
|
|
|
|
/* 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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
/* Initialize the main processor */
|
|
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);
|
|
CPU_STATE (STATE_CPU (sd, 0)) = sd;
|
|
|
|
/* establish the simulator configuration */
|
|
sim_config (sd, LITTLE_ENDIAN/*d30v always big endian*/);
|
|
|
|
#define TIC80_MEM_START 0x2000000
|
|
#define TIC80_MEM_SIZE 0x100000
|
|
|
|
/* external memory */
|
|
sim_core_attach(sd,
|
|
NULL,
|
|
attach_raw_memory,
|
|
access_read_write_exec,
|
|
0, TIC80_MEM_START, TIC80_MEM_SIZE, NULL, NULL);
|
|
sim_core_attach(sd,
|
|
NULL,
|
|
attach_raw_memory,
|
|
access_read_write_exec,
|
|
0, 0, TIC80_MEM_SIZE, NULL, NULL);
|
|
|
|
/* FIXME: for now */
|
|
return sd;
|
|
}
|
|
|
|
|
|
/* NOTE: sim_size is going away */
|
|
void
|
|
sim_size (SIM_DESC sd, int i)
|
|
{
|
|
sim_io_error (sd, "unexpected call to sim_size()");
|
|
}
|
|
|
|
|
|
void
|
|
sim_close (SIM_DESC sd, int quitting)
|
|
{
|
|
/* Uninstall the modules to avoid memory leaks,
|
|
file descriptor leaks, etc. */
|
|
sim_module_uninstall (sd);
|
|
}
|
|
|
|
|
|
SIM_RC
|
|
sim_load (SIM_DESC sd, char *prog, bfd *abfd, int from_tty)
|
|
{
|
|
bfd *prog_bfd;
|
|
|
|
prog_bfd = sim_load_file (sd, STATE_MY_NAME (sd),
|
|
STATE_CALLBACK (sd),
|
|
prog,
|
|
/* pass NULL for abfd, we always open our own */
|
|
NULL,
|
|
STATE_OPEN_KIND (sd) == SIM_OPEN_DEBUG);
|
|
if (prog_bfd == NULL)
|
|
return SIM_RC_FAIL;
|
|
sim_analyze_program (sd, prog_bfd);
|
|
return SIM_RC_OK;
|
|
}
|
|
|
|
|
|
void
|
|
sim_kill (SIM_DESC sd)
|
|
{
|
|
}
|
|
|
|
|
|
int
|
|
sim_read (SIM_DESC sd, SIM_ADDR mem, unsigned char *buf, int length)
|
|
{
|
|
return sim_core_read_buffer (sd, sim_core_write_map,
|
|
buf, mem, length);
|
|
}
|
|
|
|
|
|
int
|
|
sim_write (SIM_DESC sd, SIM_ADDR mem, unsigned char *buf, int length)
|
|
{
|
|
return sim_core_write_buffer (sd, sim_core_write_map,
|
|
buf, mem, length);
|
|
}
|
|
|
|
|
|
/* 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 */
|
|
|
|
void
|
|
sim_fetch_register (SIM_DESC sd, int regnr, unsigned char *buf)
|
|
{
|
|
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;
|
|
}
|
|
|
|
|
|
void
|
|
sim_store_register (SIM_DESC sd, int regnr, unsigned char *buf)
|
|
{
|
|
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_fetch_register - unknown register nr %d", regnr);
|
|
return;
|
|
}
|
|
|
|
|
|
void
|
|
sim_info (SIM_DESC sd, int verbose)
|
|
{
|
|
}
|
|
|
|
|
|
SIM_RC
|
|
sim_create_inferior (SIM_DESC sd,
|
|
char **argv,
|
|
char **envp)
|
|
{
|
|
STATE_CPU (sd, 0)->cia.ip = STATE_START_ADDR(sd);
|
|
STATE_CPU (sd, 0)->cia.dp = (STATE_START_ADDR(sd)
|
|
+ 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);
|
|
}
|
|
|
|
|
|
void
|
|
sim_set_callbacks (SIM_DESC sd, host_callback *callback)
|
|
{
|
|
STATE_CALLBACK (sd) = callback;
|
|
}
|