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[/] [or1k/] [trunk/] [gdb-5.3/] [sim/] [common/] [sim-resume.c] - Rev 1773
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/* Generic simulator resume. Copyright (C) 1997 Free Software Foundation, Inc. Contributed by Cygnus Support. This file is part of GDB, the GNU debugger. 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, 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 "sim-main.h" #include "sim-assert.h" /* Halt the simulator after just one instruction */ static void has_stepped (SIM_DESC sd, void *data) { ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); sim_engine_halt (sd, NULL, NULL, NULL_CIA, sim_stopped, SIM_SIGTRAP); } /* Generic resume - assumes the existance of sim_engine_run */ void sim_resume (SIM_DESC sd, int step, int siggnal) { sim_engine *engine = STATE_ENGINE (sd); jmp_buf buf; int jmpval; ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); /* we only want to be single stepping the simulator once */ if (engine->stepper != NULL) { sim_events_deschedule (sd, engine->stepper); engine->stepper = NULL; } if (step) engine->stepper = sim_events_schedule (sd, 1, has_stepped, sd); sim_module_resume (sd); /* run/resume the simulator */ engine->jmpbuf = &buf; jmpval = setjmp (buf); if (jmpval == sim_engine_start_jmpval || jmpval == sim_engine_restart_jmpval) { int last_cpu_nr = sim_engine_last_cpu_nr (sd); int next_cpu_nr = sim_engine_next_cpu_nr (sd); int nr_cpus = sim_engine_nr_cpus (sd); int sig_to_deliver; sim_events_preprocess (sd, last_cpu_nr >= nr_cpus, next_cpu_nr >= nr_cpus); if (next_cpu_nr >= nr_cpus) next_cpu_nr = 0; /* Only deliver the SIGGNAL [sic] the first time through - don't re-deliver any SIGGNAL during a restart. NOTE: A new local variable is used to avoid problems with the automatic variable ``siggnal'' being trashed by a long jump. */ if (jmpval == sim_engine_start_jmpval) sig_to_deliver = siggnal; else sig_to_deliver = 0; #ifdef SIM_CPU_EXCEPTION_RESUME { sim_cpu* cpu = STATE_CPU (sd, next_cpu_nr); SIM_CPU_EXCEPTION_RESUME(sd, cpu, sig_to_deliver); } #endif sim_engine_run (sd, next_cpu_nr, nr_cpus, sig_to_deliver); } engine->jmpbuf = NULL; sim_module_suspend (sd); }
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