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-rw-r--r--sim/tic80/sim-calls.c203
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diff --git a/sim/tic80/sim-calls.c b/sim/tic80/sim-calls.c
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+++ b/sim/tic80/sim-calls.c
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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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