Update copyright year range in header of all files managed by GDB

[thirdparty/binutils-gdb.git] / sim / common / cgen-run.c

diff --git a/sim/common/cgen-run.c b/sim/common/cgen-run.c
index 031bc1c69ea8fda7bceb50a9c8e4dc6e447b5f3c..29578b0c57f28129c9a0e4baf85d8fc700df1cc1 100644 (file)
--- a/sim/common/cgen-run.c
+++ b/sim/common/cgen-run.c
@@ -1,22 +1,21 @@
 /* Main simulator loop for CGEN-based simulators.
-   Copyright (C) 1998 Free Software Foundation, Inc.
+   Copyright (C) 1998-2023 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.
+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, write to the Free Software Foundation, Inc.,
-59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 /* ??? These are old notes, kept around for now.
    Collecting profile data and tracing slow us down so we don't do them in
@@ -34,8 +33,12 @@ with this program; if not, write to the Free Software Foundation, Inc.,
    When the framework is more modular, this can be.
 */
 
+/* This must come before any other includes.  */
+#include "defs.h"
+
 #include "sim-main.h"
 #include "sim-assert.h"
+#include "sim-signal.h"
 
 #ifndef SIM_ENGINE_PREFIX_HOOK
 #define SIM_ENGINE_PREFIX_HOOK(sd)
@@ -49,6 +52,24 @@ 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);
 
+/* If no profiling or tracing has been enabled, run in fast mode.  */
+static int
+cgen_get_fast_p (SIM_DESC sd)
+{
+  int i, c;
+  int run_fast_p = 1;
+
+  for (c = 0; c < MAX_NR_PROCESSORS; ++c)
+    {
+      SIM_CPU *cpu = STATE_CPU (sd, c);
+
+      if (PROFILE_ANY_P (cpu) || TRACE_ANY_P (cpu))
+       return 0;
+    }
+
+  return 1;
+}
+
 /* sim_resume for cgen */
 
 void
@@ -57,9 +78,13 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
   sim_engine *engine = STATE_ENGINE (sd);
   jmp_buf buf;
   int jmpval;
+  static int fast_p = -1;
 
   ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
 
+  if (fast_p == -1)
+    fast_p = cgen_get_fast_p (sd);
+
   /* we only want to be single stepping the simulator once */
   if (engine->stepper != NULL)
     {
@@ -100,7 +125,6 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
                          && 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)
@@ -116,7 +140,7 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
       /* 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);
+      CGEN_TRACE_INSN_FINI (cpu, NULL, 1);
     }
 #endif
 
@@ -205,7 +229,12 @@ 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];
+  /* Ensure that engine_fns is fully initialized, this silences a compiler
+     warning when engine_fns is used below.  */
+  ENGINE_FN *engine_fns[MAX_NR_PROCESSORS] = {};
+
+  SIM_ASSERT (nr_cpus <= MAX_NR_PROCESSORS);
+  SIM_ASSERT (next_cpu_nr >= 0 && next_cpu_nr < nr_cpus);
 
   for (i = 0; i < nr_cpus; ++i)
     {
@@ -220,7 +249,7 @@ engine_run_n (SIM_DESC sd, int next_cpu_nr, int nr_cpus, int max_insns, int fast
       SIM_ENGINE_PREFIX_HOOK (sd);
 
       /* FIXME: proper cycling of all of them, blah blah blah.  */
-      while (next_cpu_nr != nr_cpus)
+      while (next_cpu_nr < nr_cpus)
        {
          SIM_CPU *cpu = STATE_CPU (sd, next_cpu_nr);