/* This file is part of the program psim. Copyright (C) 1994-1995, Andrew Cagney 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 #include #include "basics.h" #include "psim.h" #include "../../gdb/defs.h" #include "devices.h" #include "../../gdb/remote-sim.h" #include "../../gdb/callback.h" /* Structures used by the simulator, for gdb just have static structures */ static psim *simulator; static int nr_cpus; static char *register_names[] = REGISTER_NAMES; static int print_info = 0; void sim_open (char *args) { int i; /* trace the call */ TRACE(trace_gdb, ("sim_open(args=%s) called\n", args ? args : "(null)")); if (args) { char *buf = (char *)alloca (strlen (args) + 1); char *p; strcpy (buf, args); p = strtok (args, " \t"); while (p != (char *)0) { if (*p != '-') error ("Argument is not an option '%s'", p); else { /* check arguments -- note, main.c also contains argument processing code for the standalone emulator. */ while (*++p != '\0') { switch (*p) { default: error ("Usage: target sim [ -a -p -c -C -s -i -I -t ]\n"); break; case 'a': for (i = 0; i < nr_trace; i++) trace[i] = 1; break; case 'p': trace[trace_cpu] = trace[trace_semantics] = 1; break; case 'c': trace[trace_core] = 1; break; case 'C': trace[trace_console_device] = 1; break; case 's': trace[trace_create_stack] = 1; break; case 'i': trace[trace_icu_device] = 1; break; case 'I': print_info = 1; break; case 't': trace[trace_device_tree] = 1; break; } } } p = strtok ((char *)0, " \t"); } } /* do something */ TRACE(trace_tbd, ("sim_open() - TBD - should parse the arguments\n")); TRACE(trace_tbd, ("sim_open() - TBD - can not create simulator here as do not have description of it\n")); } void sim_close (int quitting) { TRACE(trace_gdb, ("sim_close(quitting=%d) called\n", quitting)); if (print_info) psim_print_info (simulator, 1); /* nothing to do */ } int sim_load (char *prog, int from_tty) { TRACE(trace_gdb, ("sim_load(prog=%s, from_tty=%d) called\n", prog, from_tty)); /* sanity check */ if (prog == NULL) { error ("sim_load() - TBD - read stan shebs e-mail about how to find the program name?\n"); return -1; } TRACE(trace_tbd, ("sim_load() - TBD - parse that prog stripping things like quotes\n")); /* create the simulator */ TRACE(trace_gdb, ("sim_load() - first time, create the simulator\n")); nr_cpus = (WITH_SMP ? WITH_SMP : 1); simulator = psim_create(prog, nr_cpus); /* bring in all the data section */ psim_load(simulator); return 0; } void sim_kill (void) { TRACE(trace_gdb, ("sim_kill(void) called\n")); /* do nothing, nothing to do */ } int sim_read (SIM_ADDR mem, unsigned char *buf, int length) { return psim_read_memory(simulator, nr_cpus, buf, mem, length, raw_transfer); } int sim_write (SIM_ADDR mem, unsigned char *buf, int length) { return psim_write_memory(simulator, nr_cpus, buf, mem, length, raw_transfer, 1/*violate_ro*/); } void sim_fetch_register (int regno, unsigned char *buf) { if (simulator == NULL) { return; } psim_read_register(simulator, nr_cpus, buf, register_names[regno], raw_transfer); } void sim_store_register (int regno, unsigned char *buf) { if (simulator == NULL) return; psim_write_register(simulator, nr_cpus, buf, register_names[regno], raw_transfer); } void sim_info (int verbose) { TRACE(trace_gdb, ("sim_info(verbose=%d) called\n", verbose)); psim_print_info (simulator, verbose); } void sim_create_inferior (SIM_ADDR start_address, char **argv, char **envp) { unsigned_word entry_point = start_address; TRACE(trace_gdb, ("sim_create_inferior(start_address=0x%x, ...)\n", start_address)); psim_load(simulator); psim_stack(simulator, argv, envp); psim_write_register(simulator, -1 /* all start at same PC */, &entry_point, "pc", cooked_transfer); } static volatile int sim_should_run; void sim_stop_reason (enum sim_stop *reason, int *sigrc) { psim_status status = psim_get_status(simulator); switch (CURRENT_ENVIRONMENT) { case VIRTUAL_ENVIRONMENT: switch (status.reason) { case was_continuing: *reason = sim_stopped; *sigrc = SIGTRAP; if (sim_should_run) { error("sim_stop_reason() unknown reason for halt\n"); } break; case was_trap: *reason = sim_stopped; *sigrc = SIGTRAP; break; case was_exited: *reason = sim_exited; *sigrc = 0; break; case was_signalled: *reason = sim_signalled; *sigrc = status.signal; break; } break; case OPERATING_ENVIRONMENT: *reason = sim_stopped; *sigrc = SIGTRAP; break; default: error("sim_stop_reason() - unknown environment\n"); } } /* Run (or resume) the program. */ static void sim_ctrl_c() { sim_should_run = 0; } void sim_resume (int step, int siggnal) { void (*prev) (); unsigned_word program_counter; prev = signal(SIGINT, sim_ctrl_c); sim_should_run = 1; if (step) psim_step(simulator); else psim_run_until_stop(simulator, &sim_should_run); signal(SIGINT, prev); } void sim_do_command(char *cmd) { TRACE(trace_gdb, ("sim_do_commands(cmd=%s) called\n", cmd)); } void sim_set_callbacks (host_callback *callback) { TRACE(trace_gdb, ("sim_set_callbacks called\n")); } /****/ void * zalloc(long size) { void *memory = (void*)xmalloc(size); if (memory == NULL) error("xmalloc failed\n"); bzero(memory, size); return memory; } void zfree(void *data) { mfree(NULL, data); }