summaryrefslogtreecommitdiff
path: root/sim/common/cgen-run.c
diff options
context:
space:
mode:
Diffstat (limited to 'sim/common/cgen-run.c')
-rw-r--r--sim/common/cgen-run.c237
1 files changed, 0 insertions, 237 deletions
diff --git a/sim/common/cgen-run.c b/sim/common/cgen-run.c
deleted file mode 100644
index 031bc1c69ea..00000000000
--- a/sim/common/cgen-run.c
+++ /dev/null
@@ -1,237 +0,0 @@
-/* Main simulator loop for CGEN-based simulators.
- Copyright (C) 1998 Free Software Foundation, Inc.
- Contributed by Cygnus Solutions.
-
-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. */
-
-/* ??? These are old notes, kept around for now.
- Collecting profile data and tracing slow us down so we don't do them in
- "fast mode".
- There are 6 possibilities on 2 axes:
- - no-scaching, insn-scaching, basic-block-scaching
- - run with full features or run fast
- Supporting all six possibilities in one executable is a bit much but
- supporting full/fast seems reasonable.
- If the scache is configured in it is always used.
- If pbb-scaching is configured in it is always used.
- ??? Sometimes supporting more than one set of semantic functions will make
- the simulator too large - this should be configurable. Blah blah blah.
- ??? Supporting full/fast can be more modular, blah blah blah.
- When the framework is more modular, this can be.
-*/
-
-#include "sim-main.h"
-#include "sim-assert.h"
-
-#ifndef SIM_ENGINE_PREFIX_HOOK
-#define SIM_ENGINE_PREFIX_HOOK(sd)
-#endif
-#ifndef SIM_ENGINE_POSTFIX_HOOK
-#define SIM_ENGINE_POSTFIX_HOOK(sd)
-#endif
-
-static sim_event_handler has_stepped;
-static void prime_cpu (SIM_CPU *, int);
-static void engine_run_1 (SIM_DESC, int, int);
-static void engine_run_n (SIM_DESC, int, int, int, int);
-
-/* sim_resume for cgen */
-
-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);
-
-#if WITH_SCACHE
- if (USING_SCACHE_P (sd))
- scache_flush (sd);
-#endif
-
- /* run/resume the simulator */
-
- sim_engine_set_run_state (sd, sim_running, 0);
-
- 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);
- /* ??? Setting max_insns to 0 allows pbb/jit code to run wild and is
- useful if all one wants to do is run a benchmark. Need some better
- way to identify this case. */
- int max_insns = (step
- ? 1
- : (nr_cpus == 1
- /*&& wip:no-events*/
- /* Don't do this if running under gdb, need to
- poll ui for events. */
- && STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
- ? 0
- : 8); /*FIXME: magic number*/
- int fast_p = STATE_RUN_FAST_P (sd);
-
- sim_events_preprocess (sd, last_cpu_nr >= nr_cpus, next_cpu_nr >= nr_cpus);
- if (next_cpu_nr >= nr_cpus)
- next_cpu_nr = 0;
- if (nr_cpus == 1)
- engine_run_1 (sd, max_insns, fast_p);
- else
- engine_run_n (sd, next_cpu_nr, nr_cpus, max_insns, fast_p);
- }
-#if 1 /*wip*/
- else
- {
- /* Account for the last insn executed. */
- SIM_CPU *cpu = STATE_CPU (sd, sim_engine_last_cpu_nr (sd));
- ++ CPU_INSN_COUNT (cpu);
- TRACE_INSN_FINI (cpu, NULL, 1);
- }
-#endif
-
- engine->jmpbuf = NULL;
-
- {
- int i;
- int nr_cpus = sim_engine_nr_cpus (sd);
-
-#if 0 /*wip,ignore*/
- /* If the loop exits, either we single-stepped or @cpu@_engine_stop
- was called. */
- if (step)
- sim_engine_set_run_state (sd, sim_stopped, SIM_SIGTRAP);
- else
- sim_engine_set_run_state (sd, pending_reason, pending_sigrc);
-#endif
-
- for (i = 0; i < nr_cpus; ++i)
- {
- SIM_CPU *cpu = STATE_CPU (sd, i);
-
- PROFILE_TOTAL_INSN_COUNT (CPU_PROFILE_DATA (cpu)) += CPU_INSN_COUNT (cpu);
- }
- }
-
- sim_module_suspend (sd);
-}
-
-/* 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);
-}
-
-/* Prepare a cpu for running.
- MAX_INSNS is the number of insns to execute per time slice.
- If 0 it means the cpu can run as long as it wants (e.g. until the
- program completes).
- ??? Perhaps this should be an argument to the engine_fn. */
-
-static void
-prime_cpu (SIM_CPU *cpu, int max_insns)
-{
- CPU_MAX_SLICE_INSNS (cpu) = max_insns;
- CPU_INSN_COUNT (cpu) = 0;
-
- /* Initialize the insn descriptor table.
- This has to be done after all initialization so we just defer it to
- here. */
-
- if (MACH_PREPARE_RUN (CPU_MACH (cpu)))
- (* MACH_PREPARE_RUN (CPU_MACH (cpu))) (cpu);
-}
-
-/* Main loop, for 1 cpu. */
-
-static void
-engine_run_1 (SIM_DESC sd, int max_insns, int fast_p)
-{
- sim_cpu *cpu = STATE_CPU (sd, 0);
- ENGINE_FN *fn = fast_p ? CPU_FAST_ENGINE_FN (cpu) : CPU_FULL_ENGINE_FN (cpu);
-
- prime_cpu (cpu, max_insns);
-
- while (1)
- {
- SIM_ENGINE_PREFIX_HOOK (sd);
-
- (*fn) (cpu);
-
- SIM_ENGINE_POSTFIX_HOOK (sd);
-
- /* process any events */
- if (sim_events_tick (sd))
- sim_events_process (sd);
- }
-}
-
-/* Main loop, for multiple cpus. */
-
-static void
-engine_run_n (SIM_DESC sd, int next_cpu_nr, int nr_cpus, int max_insns, int fast_p)
-{
- int i;
- ENGINE_FN *engine_fns[MAX_NR_PROCESSORS];
-
- for (i = 0; i < nr_cpus; ++i)
- {
- SIM_CPU *cpu = STATE_CPU (sd, i);
-
- engine_fns[i] = fast_p ? CPU_FAST_ENGINE_FN (cpu) : CPU_FULL_ENGINE_FN (cpu);
- prime_cpu (cpu, max_insns);
- }
-
- while (1)
- {
- SIM_ENGINE_PREFIX_HOOK (sd);
-
- /* FIXME: proper cycling of all of them, blah blah blah. */
- while (next_cpu_nr != nr_cpus)
- {
- SIM_CPU *cpu = STATE_CPU (sd, next_cpu_nr);
-
- (* engine_fns[next_cpu_nr]) (cpu);
- ++next_cpu_nr;
- }
-
- SIM_ENGINE_POSTFIX_HOOK (sd);
-
- /* process any events */
- if (sim_events_tick (sd))
- sim_events_process (sd);
- }
-}
View Lorry Controller Status