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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [sim/] [common/] [sim-resume.c] - Rev 856
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/* Generic simulator resume. Copyright (C) 1997, 2007, 2008, 2009, 2010 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 3 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, see <http://www.gnu.org/licenses/>. */ #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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