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* sim-engine.c (sim_engine_set_run_state): New function.

Browse Source 
* sim-engine.h (sim_engine_set_run_state): Declare.
	* genmloop.sh (pending_reason,pending_sigrc): New static locals.
	(@cpu@_engine_stop): New args reason,sigrc.  All callers updated.
	(engine_resume): Reorganize.  Allow synchronous exit from main loop.
This commit is contained in:
Doug Evans 1998-05-16 19:51:12 +00:00
parent 882d99e4b6
commit ebd58f4dde
2 changed files with 51 additions and 28 deletions
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8
sim/common/ChangeLog
View File

@ -1,3 +1,11 @@
Sat May 16 12:44:52 1998 Doug Evans <devans@seba.cygnus.com>
* sim-engine.c (sim_engine_set_run_state): New function.
* sim-engine.h (sim_engine_set_run_state): Declare.
* genmloop.sh (pending_reason,pending_sigrc): New static locals.
(@cpu@_engine_stop): New args reason,sigrc. All callers updated.
(engine_resume): Reorganize. Allow synchronous exit from main loop.
Fri May 15 16:06:05 1998 Doug Evans <devans@seba.cygnus.com>
* cgen-trace.c (trace_insn_init): New arg first_p.

71
sim/common/genmloop.sh
View File

@ -142,6 +142,10 @@ ${SHELL} $file support
cat <<EOF
static volatile int keep_running;
/* FIXME: Should each cpu have its own copy? */
static volatile enum sim_stop pending_reason;
static volatile int pending_sigrc;
/* Want to measure simulator speed even in fast mode. */
static unsigned long insn_count;
static SIM_ELAPSED_TIME start_time;
@ -151,10 +155,17 @@ static void engine_resume (SIM_DESC, int, int);
static void engine_resume_full (SIM_DESC);
${scache+static void engine_resume_fast (SIM_DESC);}
/* Stop the simulation for REASON/SIGRC.
CPU is the cpu being stopped [at address PC].
If CPU is NULL, all cpu's are stopping for the same reason. */
int
@cpu@_engine_stop (SIM_DESC sd)
@cpu@_engine_stop (SIM_DESC sd, SIM_CPU *cpu, PCADDR pc,
enum sim_stop reason, int sigrc)
{
keep_running = 0;
pending_reason = reason;
pending_sigrc = sigrc;
return 1;
}
@ -186,52 +197,56 @@ engine_resume (SIM_DESC sd, int step, int siggnal)
insn_count = 0;
engine->jmpbuf = &buf;
sim_engine_set_run_state (sd, sim_running, 0);
pending_reason = sim_running;
pending_sigrc = 0;
/* ??? Restart support to be added in time. */
if (setjmp (buf))
{
/* Account for the last insn executed. */
++insn_count;
engine->jmpbuf = NULL;
TRACE_INSN_FINI ((sim_cpu *) cpu, 1);
PROFILE_EXEC_TIME (CPU_PROFILE_DATA (cpu))
+= sim_elapsed_time_since (start_time);
PROFILE_TOTAL_INSN_COUNT (CPU_PROFILE_DATA (cpu))
+= insn_count;
return;
}
/* ??? Restart support to be added in time. */
/* The computed goto switch can be used, and while the number of blocks
may swamp the relatively few that this function contains, when running
with the scache we put the actual semantic code in their own
functions. */
else
{
/* The computed goto switch can be used, and while the number of blocks
may swamp the relatively few that this function contains, when running
with the scache we put the actual semantic code in their own
functions. */
EOF
if [ x$fast = xyes ] ; then
cat <<EOF
if (step
|| !RUN_FAST_P (current_cpu))
engine_resume_full (sd);
else
engine_resume_fast (sd);
if (step
|| !RUN_FAST_P (current_cpu))
engine_resume_full (sd);
else
engine_resume_fast (sd);
EOF
else
cat <<EOF
engine_resume_full (sd);
engine_resume_full (sd);
EOF
fi
cat <<EOF
/* If the loop exits, either we single-stepped or engine_stop was called.
In either case we need to call engine_halt: to properly exit this
function we must go through the setjmp executed above. */
if (step)
sim_engine_halt (sd, current_cpu, NULL, NULL_CIA, sim_stopped, SIM_SIGTRAP);
sim_engine_halt (sd, current_cpu, NULL, NULL_CIA, sim_stopped, SIM_SIGINT);
/* 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);
}
engine->jmpbuf = NULL;
PROFILE_EXEC_TIME (CPU_PROFILE_DATA (cpu))
+= sim_elapsed_time_since (start_time);
PROFILE_TOTAL_INSN_COUNT (CPU_PROFILE_DATA (cpu))
+= insn_count;
}
EOF