| /* 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); |
| } |