/* This file is part of the program psim. Copyright (C) 1994-1996, Andrew Cagney 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 /* FIXME - should be machine dependant version */ #include #include #include "bfd.h" #include "sim-main.h" #include "sim-utils.h" #include "sim-options.h" #ifdef HAVE_STDLIB_H #include #endif #ifdef HAVE_STRING_H #include #else #ifdef HAVE_STRINGS_H #include #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) { STATE_OPEN_KIND (&simulation) = kind; /* establish the simulator configuration */ sim_config (&simulation, LITTLE_ENDIAN/*d30v always big endian*/); if (sim_pre_argv_init (&simulation, 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 (&simulation, argv) != SIM_RC_OK) { /* Uninstall the modules to avoid memory leaks, file descriptor leaks, etc. */ sim_module_uninstall (&simulation); return 0; } if (sim_post_argv_init (&simulation) != SIM_RC_OK) { /* Uninstall the modules to avoid memory leaks, file descriptor leaks, etc. */ sim_module_uninstall (&simulation); return 0; } engine_init(&simulation); #define TIC80_MEM_START 0x2000000 #define TIC80_MEM_SIZE 0x100000 /* external memory */ sim_core_attach(&simulation, NULL, attach_raw_memory, access_read_write_exec, 0, TIC80_MEM_START, TIC80_MEM_SIZE, NULL, NULL); sim_core_attach(&simulation, NULL, attach_raw_memory, access_read_write_exec, 0, 0, TIC80_MEM_SIZE, NULL, NULL); /* FIXME: for now */ return (SIM_DESC) &simulation; } /* NOTE: sim_size is going away */ void sim_size (int i); void sim_size (int i) { sim_io_error (NULL, "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 (&simulation); } SIM_RC sim_load (SIM_DESC sd, char *prog, bfd *abfd, int from_tty) { extern bfd *sim_load_file (); /* ??? Don't know where this should live. */ 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 && regnr <= Rn_REGNUM) *(unsigned32*)buf = H2T_4 (STATE_CPU (sd, 0)->reg[regnr - A0_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 - A0_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] = H2T_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; } volatile int keep_running = 1; void sim_stop_reason (SIM_DESC sd, enum sim_stop *reason, int *sigrc) { *reason = simulation.reason; *sigrc = simulation.siggnal; keep_running = 1; /* ready for next run */ } int sim_stop (SIM_DESC sd) { keep_running = 0; return 1; } void sim_resume (SIM_DESC sd, int step, int siggnal) { /* keep_running = 1 - in sim_stop_reason */ if (step) keep_running = 0; engine_run_until_stop(sd, &keep_running); } void sim_do_command (SIM_DESC sd, char *cmd) { sim_io_error (sd, "sim_do_command - unimplemented"); } void sim_set_callbacks (SIM_DESC sd, host_callback *callback) { STATE_CALLBACK (&simulation) = callback; }