Initial revision

1 files changed, 1175 insertions, 0 deletions

diff --git a/sim/common/sim-profile.c b/sim/common/sim-profile.c
new file mode 100644
index 00000000000..5d075d15bd1
--- /dev/null
+++ b/sim/common/sim-profile.c
@@ -0,0 +1,1175 @@
+/* Default profiling support.
+   Copyright (C) 1996, 1997, 1998 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-io.h"
+#include "sim-options.h"
+#include "sim-assert.h"
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#ifdef HAVE_STRING_H
+#include <string.h>
+#else
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#endif
+
+#define COMMAS(n) sim_add_commas (comma_buf, sizeof (comma_buf), (n))
+
+static MODULE_INIT_FN profile_init;
+static MODULE_UNINSTALL_FN profile_uninstall;
+
+static DECLARE_OPTION_HANDLER (profile_option_handler);
+
+enum {
+  OPTION_PROFILE_INSN = OPTION_START,
+  OPTION_PROFILE_MEMORY,
+  OPTION_PROFILE_MODEL,
+  OPTION_PROFILE_FILE,
+  OPTION_PROFILE_CORE,
+  OPTION_PROFILE_PC,
+  OPTION_PROFILE_PC_RANGE,
+  OPTION_PROFILE_PC_GRANULARITY,
+  OPTION_PROFILE_RANGE,
+  OPTION_PROFILE_FUNCTION
+};
+
+static const OPTION profile_options[] = {
+  { {"profile", optional_argument, NULL, 'p'},
+      'p', "on|off", "Perform profiling",
+      profile_option_handler },
+  { {"profile-insn", optional_argument, NULL, OPTION_PROFILE_INSN},
+      '\0', "on|off", "Perform instruction profiling",
+      profile_option_handler },
+  { {"profile-memory", optional_argument, NULL, OPTION_PROFILE_MEMORY},
+      '\0', "on|off", "Perform memory profiling",
+      profile_option_handler },
+  { {"profile-core", optional_argument, NULL, OPTION_PROFILE_CORE},
+      '\0', "on|off", "Perform CORE profiling",
+      profile_option_handler },
+  { {"profile-model", optional_argument, NULL, OPTION_PROFILE_MODEL},
+      '\0', "on|off", "Perform model profiling",
+      profile_option_handler },
+
+  { {"profile-file", required_argument, NULL, OPTION_PROFILE_FILE},
+      '\0', "FILE NAME", "Specify profile output file",
+      profile_option_handler },
+
+  { {"profile-pc", optional_argument, NULL, OPTION_PROFILE_PC},
+      '\0', "on|off", "Perform PC profiling",
+      profile_option_handler },
+  { {"profile-pc-frequency", required_argument, NULL, 'F'},
+      'F', "PC PROFILE FREQUENCY", "Specified PC profiling frequency",
+      profile_option_handler },
+  { {"profile-pc-size", required_argument, NULL, 'S'},
+      'S', "PC PROFILE SIZE", "Specify PC profiling size",
+      profile_option_handler },
+  { {"profile-pc-granularity", required_argument, NULL, OPTION_PROFILE_PC_GRANULARITY},
+      '\0', "PC PROFILE GRANULARITY", "Specify PC profiling sample coverage",
+      profile_option_handler },
+  { {"profile-pc-range", required_argument, NULL, OPTION_PROFILE_PC_RANGE},
+      '\0', "BASE,BOUND", "Specify PC profiling address range",
+      profile_option_handler },
+
+#ifdef SIM_HAVE_ADDR_RANGE
+  { {"profile-range", required_argument, NULL, OPTION_PROFILE_RANGE},
+      '\0', "START,END", "Specify range of addresses for instruction and model profiling",
+      profile_option_handler },
+#if 0 /*wip*/
+  { {"profile-function", required_argument, NULL, OPTION_PROFILE_FUNCTION},
+      '\0', "FUNCTION", "Specify function to profile",
+      profile_option_handler },
+#endif
+#endif
+
+  { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
+};
+
+/* Set/reset the profile options indicated in MASK.  */
+
+static SIM_RC
+set_profile_option_mask (SIM_DESC sd, const char *name, int mask, const char *arg)
+{
+  int profile_nr;
+  int cpu_nr;
+  int profile_val = 1;
+
+  if (arg != NULL)
+    {
+      if (strcmp (arg, "yes") == 0
+	  || strcmp (arg, "on") == 0
+	  || strcmp (arg, "1") == 0)
+	profile_val = 1;
+      else if (strcmp (arg, "no") == 0
+	       || strcmp (arg, "off") == 0
+	       || strcmp (arg, "0") == 0)
+	profile_val = 0;
+      else
+	{
+	  sim_io_eprintf (sd, "Argument `%s' for `--profile%s' invalid, one of `on', `off', `yes', `no' expected\n", arg, name);
+	  return SIM_RC_FAIL;
+	}
+    }
+
+  /* update applicable profile bits */
+  for (profile_nr = 0; profile_nr < MAX_PROFILE_VALUES; ++profile_nr)
+    {
+      if ((mask & (1 << profile_nr)) == 0)
+	continue;
+
+#if 0 /* see sim-trace.c, set flags in STATE here if/when there are any */
+      /* Set non-cpu specific values.  */
+      switch (profile_nr)
+	{
+	case ??? :
+	  break;
+	}
+#endif
+
+      /* Set cpu values.  */
+      for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; cpu_nr++)
+	{
+	  CPU_PROFILE_FLAGS (STATE_CPU (sd, cpu_nr))[profile_nr] = profile_val;
+	}
+    }
+
+  /* Re-compute the cpu profile summary.  */
+  if (profile_val)
+    {
+      for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; cpu_nr++)
+	CPU_PROFILE_DATA (STATE_CPU (sd, cpu_nr))->profile_any_p = 1;
+    }
+  else
+    {
+      for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; cpu_nr++)
+	{
+	  CPU_PROFILE_DATA (STATE_CPU (sd, cpu_nr))->profile_any_p = 0;
+	  for (profile_nr = 0; profile_nr < MAX_PROFILE_VALUES; ++profile_nr)
+	    {
+	      if (CPU_PROFILE_FLAGS (STATE_CPU (sd, cpu_nr))[profile_nr])
+		{
+		  CPU_PROFILE_DATA (STATE_CPU (sd, cpu_nr))->profile_any_p = 1;
+		  break;
+		}
+	    }
+	}
+    }  
+
+  return SIM_RC_OK;
+}
+
+/* Set one profile option based on its IDX value.
+   Not static as cgen-scache.c uses it.  */
+
+SIM_RC
+sim_profile_set_option (SIM_DESC sd, const char *name, int idx, const char *arg)
+{
+  return set_profile_option_mask (sd, name, 1 << idx, arg);
+}
+
+static SIM_RC
+profile_option_handler (SIM_DESC sd,
+			sim_cpu *cpu,
+			int opt,
+			char *arg,
+			int is_command)
+{
+  int cpu_nr,prof_nr;
+
+  /* FIXME: Need to handle `cpu' arg.  */
+
+  switch (opt)
+    {
+    case 'p' :
+      if (! WITH_PROFILE)
+	sim_io_eprintf (sd, "Profiling not compiled in, `-p' ignored\n");
+      else
+	return set_profile_option_mask (sd, "profile", PROFILE_USEFUL_MASK,
+					arg);
+      break;
+
+    case OPTION_PROFILE_INSN :
+      if (WITH_PROFILE_INSN_P)
+	return sim_profile_set_option (sd, "-insn", PROFILE_INSN_IDX, arg);
+      else
+	sim_io_eprintf (sd, "Instruction profiling not compiled in, `--profile-insn' ignored\n");
+      break;
+
+    case OPTION_PROFILE_MEMORY :
+      if (WITH_PROFILE_MEMORY_P)
+	return sim_profile_set_option (sd, "-memory", PROFILE_MEMORY_IDX, arg);
+      else
+	sim_io_eprintf (sd, "Memory profiling not compiled in, `--profile-memory' ignored\n");
+      break;
+
+    case OPTION_PROFILE_CORE :
+      if (WITH_PROFILE_CORE_P)
+	return sim_profile_set_option (sd, "-core", PROFILE_CORE_IDX, arg);
+      else
+	sim_io_eprintf (sd, "CORE profiling not compiled in, `--profile-core' ignored\n");
+      break;
+
+    case OPTION_PROFILE_MODEL :
+      if (WITH_PROFILE_MODEL_P)
+	return sim_profile_set_option (sd, "-model", PROFILE_MODEL_IDX, arg);
+      else
+	sim_io_eprintf (sd, "Model profiling not compiled in, `--profile-model' ignored\n");
+      break;
+
+    case OPTION_PROFILE_FILE :
+      /* FIXME: Might want this to apply to pc profiling only,
+	 or have two profile file options.  */
+      if (! WITH_PROFILE)
+	sim_io_eprintf (sd, "Profiling not compiled in, `--profile-file' ignored\n");
+      else
+	{
+	  FILE *f = fopen (arg, "w");
+
+	  if (f == NULL)
+	    {
+	      sim_io_eprintf (sd, "Unable to open profile output file `%s'\n", arg);
+	      return SIM_RC_FAIL;
+	    }
+	  for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; ++cpu_nr)
+	    PROFILE_FILE (CPU_PROFILE_DATA (STATE_CPU (sd, cpu_nr))) = f;
+	}
+      break;
+
+    case OPTION_PROFILE_PC:
+      if (WITH_PROFILE_PC_P)
+	return sim_profile_set_option (sd, "-pc", PROFILE_PC_IDX, arg);
+      else
+	sim_io_eprintf (sd, "PC profiling not compiled in, `--profile-pc' ignored\n");
+      break;
+
+    case 'F' :
+      if (WITH_PROFILE_PC_P)
+	{
+	  /* FIXME: Validate arg.  */
+	  int val = atoi (arg);
+	  for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; ++cpu_nr)
+	    PROFILE_PC_FREQ (CPU_PROFILE_DATA (STATE_CPU (sd, cpu_nr))) = val;
+	  for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; ++cpu_nr)
+	    CPU_PROFILE_FLAGS (STATE_CPU (sd, cpu_nr))[PROFILE_PC_IDX] = 1;
+	}
+      else
+	sim_io_eprintf (sd, "PC profiling not compiled in, `--profile-pc-frequency' ignored\n");
+      break;
+
+    case 'S' :
+      if (WITH_PROFILE_PC_P)
+	{
+	  /* FIXME: Validate arg.  */
+	  int val = atoi (arg);
+	  for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; ++cpu_nr)
+	    PROFILE_PC_NR_BUCKETS (CPU_PROFILE_DATA (STATE_CPU (sd, cpu_nr))) = val;
+	  for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; ++cpu_nr)
+	    CPU_PROFILE_FLAGS (STATE_CPU (sd, cpu_nr))[PROFILE_PC_IDX] = 1;
+	}
+      else
+	sim_io_eprintf (sd, "PC profiling not compiled in, `--profile-pc-size' ignored\n");
+      break;
+
+    case OPTION_PROFILE_PC_GRANULARITY:
+      if (WITH_PROFILE_PC_P)
+	{
+	  int shift;
+	  int val = atoi (arg);
+	  /* check that the granularity is a power of two */
+	  shift = 0;
+	  while (val > (1 << shift))
+	    {
+	      shift += 1;
+	    }
+	  if (val != (1 << shift))
+	    {
+	      sim_io_eprintf (sd, "PC profiling granularity not a power of two\n");
+	      return SIM_RC_FAIL;
+	    }
+	  if (shift == 0)
+	    {
+	      sim_io_eprintf (sd, "PC profiling granularity too small");
+	      return SIM_RC_FAIL;
+	    }
+	  for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; ++cpu_nr)
+	    PROFILE_PC_SHIFT (CPU_PROFILE_DATA (STATE_CPU (sd, cpu_nr))) = shift;
+	  for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; ++cpu_nr)
+	    CPU_PROFILE_FLAGS (STATE_CPU (sd, cpu_nr))[PROFILE_PC_IDX] = 1;
+	}
+      else
+	sim_io_eprintf (sd, "PC profiling not compiled in, `--profile-pc-granularity' ignored\n");
+      break;
+
+    case OPTION_PROFILE_PC_RANGE:
+      if (WITH_PROFILE_PC_P)
+	{
+	  /* FIXME: Validate args */
+	  char *chp = arg;
+	  unsigned long base;
+	  unsigned long bound;
+	  base = strtoul (chp, &chp, 0);
+	  if (*chp != ',')
+	    {
+	      sim_io_eprintf (sd, "--profile-pc-range missing BOUND argument\n");
+	      return SIM_RC_FAIL;
+	    }
+	  bound = strtoul (chp + 1, NULL, 0);
+	  for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; ++cpu_nr)
+	    {
+	      PROFILE_PC_START (CPU_PROFILE_DATA (STATE_CPU (sd, cpu_nr))) = base;
+	      PROFILE_PC_END (CPU_PROFILE_DATA (STATE_CPU (sd, cpu_nr))) = bound;
+	    }	      
+	  for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; ++cpu_nr)
+	    CPU_PROFILE_FLAGS (STATE_CPU (sd, cpu_nr))[PROFILE_PC_IDX] = 1;
+	}
+      else
+	sim_io_eprintf (sd, "PC profiling not compiled in, `--profile-pc-range' ignored\n");
+      break;
+
+#ifdef SIM_HAVE_ADDR_RANGE
+    case OPTION_PROFILE_RANGE :
+      if (WITH_PROFILE)
+	{
+	  char *chp = arg;
+	  unsigned long start,end;
+	  start = strtoul (chp, &chp, 0);
+	  if (*chp != ',')
+	    {
+	      sim_io_eprintf (sd, "--profile-range missing END argument\n");
+	      return SIM_RC_FAIL;
+	    }
+	  end = strtoul (chp + 1, NULL, 0);
+	  /* FIXME: Argument validation.  */
+	  if (cpu != NULL)
+	    sim_addr_range_add (PROFILE_RANGE (CPU_PROFILE_DATA (cpu)),
+				start, end);
+	  else
+	    for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; ++cpu_nr)
+	      sim_addr_range_add (PROFILE_RANGE (CPU_PROFILE_DATA (STATE_CPU (sd, cpu_nr))),
+				  start, end);
+	}
+      else
+	sim_io_eprintf (sd, "Profiling not compiled in, `--profile-range' ignored\n");
+      break;
+
+    case OPTION_PROFILE_FUNCTION :
+      if (WITH_PROFILE)
+	{
+	  /*wip: need to compute function range given name*/
+	}
+      else
+	sim_io_eprintf (sd, "Profiling not compiled in, `--profile-function' ignored\n");
+      break;
+#endif /* SIM_HAVE_ADDR_RANGE */
+    }
+
+  return SIM_RC_OK;
+}
+
+/* PC profiling support */
+
+#if WITH_PROFILE_PC_P
+
+static void
+profile_pc_cleanup (SIM_DESC sd)
+{
+  int n;
+  for (n = 0; n < MAX_NR_PROCESSORS; n++)
+    {
+      sim_cpu *cpu = STATE_CPU (sd, n);
+      PROFILE_DATA *data = CPU_PROFILE_DATA (cpu);
+      if (PROFILE_PC_COUNT (data) != NULL)
+	zfree (PROFILE_PC_COUNT (data));
+      PROFILE_PC_COUNT (data) = NULL;
+      if (PROFILE_PC_EVENT (data) != NULL)
+	sim_events_deschedule (sd, PROFILE_PC_EVENT (data));
+      PROFILE_PC_EVENT (data) = NULL;
+    }
+}
+
+
+static void
+profile_pc_uninstall (SIM_DESC sd)
+{
+  profile_pc_cleanup (sd);
+}
+
+static void
+profile_pc_event (SIM_DESC sd,
+		  void *data)
+{
+  sim_cpu *cpu = (sim_cpu*) data;
+  PROFILE_DATA *profile = CPU_PROFILE_DATA (cpu);
+  address_word pc;
+  unsigned i;
+  switch (STATE_WATCHPOINTS (sd)->sizeof_pc)
+    {
+    case 2: pc = *(unsigned_2*)(STATE_WATCHPOINTS (sd)->pc) ; break;
+    case 4: pc = *(unsigned_4*)(STATE_WATCHPOINTS (sd)->pc) ; break;
+    case 8: pc = *(unsigned_8*)(STATE_WATCHPOINTS (sd)->pc) ; break;
+    default: pc = 0;
+    }
+  i = (pc - PROFILE_PC_START (profile)) >> PROFILE_PC_SHIFT (profile);
+  if (i < PROFILE_PC_NR_BUCKETS (profile))
+    PROFILE_PC_COUNT (profile) [i] += 1; /* Overflow? */
+  else
+    PROFILE_PC_COUNT (profile) [PROFILE_PC_NR_BUCKETS (profile)] += 1;
+  PROFILE_PC_EVENT (profile) = 
+    sim_events_schedule (sd, PROFILE_PC_FREQ (profile), profile_pc_event, cpu);
+}
+
+static SIM_RC
+profile_pc_init (SIM_DESC sd)
+{
+  int n;
+  profile_pc_cleanup (sd);
+  for (n = 0; n < MAX_NR_PROCESSORS; n++)
+    {
+      sim_cpu *cpu = STATE_CPU (sd, n);
+      PROFILE_DATA *data = CPU_PROFILE_DATA (cpu);
+      if (CPU_PROFILE_FLAGS (STATE_CPU (sd, n))[PROFILE_PC_IDX]
+	  && STATE_WATCHPOINTS (sd)->pc != NULL)
+	{
+	  int bucket_size;
+	  /* fill in the frequency if not specified */
+	  if (PROFILE_PC_FREQ (data) == 0)
+	    PROFILE_PC_FREQ (data) = 256;
+	  /* fill in the start/end if not specified */
+	  if (PROFILE_PC_END (data) == 0)
+	    {
+	      PROFILE_PC_START (data) = STATE_TEXT_START (sd);
+	      PROFILE_PC_END (data) = STATE_TEXT_END (sd);
+	    }
+	  /* Compute the number of buckets if not specified. */
+	  if (PROFILE_PC_NR_BUCKETS (data) == 0)
+	    {
+	      if (PROFILE_PC_BUCKET_SIZE (data) == 0)
+		PROFILE_PC_NR_BUCKETS (data) = 16;
+	      else
+		{
+		  if (PROFILE_PC_END (data) == 0)
+		    {
+		      /* nr_buckets = (full-address-range / 2) / (bucket_size / 2) */
+		      PROFILE_PC_NR_BUCKETS (data) =
+			((1 << (STATE_WATCHPOINTS (sd)->sizeof_pc) * (8 - 1))
+			 / (PROFILE_PC_BUCKET_SIZE (data) / 2));
+		    }
+		  else
+		    {
+		      PROFILE_PC_NR_BUCKETS (data) =
+			((PROFILE_PC_END (data)
+			  - PROFILE_PC_START (data)
+			  + PROFILE_PC_BUCKET_SIZE (data) - 1)
+			 / PROFILE_PC_BUCKET_SIZE (data));
+		    }
+		}
+	    }
+	  /* Compute the bucket size if not specified.  Ensure that it
+             is rounded up to the next power of two */
+	  if (PROFILE_PC_BUCKET_SIZE (data) == 0)
+	    {
+	      if (PROFILE_PC_END (data) == 0)
+		/* bucket_size = (full-address-range / 2) / (nr_buckets / 2) */
+		bucket_size = ((1 << ((STATE_WATCHPOINTS (sd)->sizeof_pc * 8) - 1))
+			       / (PROFILE_PC_NR_BUCKETS (data) / 2));
+	      else
+		bucket_size = ((PROFILE_PC_END (data)
+				- PROFILE_PC_START (data)
+				+ PROFILE_PC_NR_BUCKETS (data) - 1)
+			       / PROFILE_PC_NR_BUCKETS (data));
+	      PROFILE_PC_SHIFT (data) = 0;
+	      while (bucket_size < PROFILE_PC_BUCKET_SIZE (data))
+		{
+		  PROFILE_PC_SHIFT (data) += 1;
+		}
+	    }
+	  /* Align the end address with bucket size */
+	  if (PROFILE_PC_END (data) != 0)
+	    PROFILE_PC_END (data) = (PROFILE_PC_START (data)
+				     + (PROFILE_PC_BUCKET_SIZE (data)
+					* PROFILE_PC_NR_BUCKETS (data)));
+	  /* create the relevant buffers */
+	  PROFILE_PC_COUNT (data) =
+	    NZALLOC (unsigned, PROFILE_PC_NR_BUCKETS (data) + 1);
+	  PROFILE_PC_EVENT (data) =
+	    sim_events_schedule (sd,
+				 PROFILE_PC_FREQ (data),
+				 profile_pc_event,
+				 cpu);
+	}
+    }
+  return SIM_RC_OK;
+}
+
+static void
+profile_print_pc (sim_cpu *cpu, int verbose)
+{
+  SIM_DESC sd = CPU_STATE (cpu);
+  PROFILE_DATA *profile = CPU_PROFILE_DATA (cpu);
+  char comma_buf[20];
+  unsigned max_val;
+  unsigned total;
+  unsigned i;
+
+  if (PROFILE_PC_COUNT (profile) == 0)
+    return;
+
+  sim_io_printf (sd, "Program Counter Statistics:\n\n");
+
+  /* First pass over data computes various things.  */
+  max_val = 0;
+  total = 0;
+  for (i = 0; i <= PROFILE_PC_NR_BUCKETS (profile); ++i)
+    {
+      total += PROFILE_PC_COUNT (profile) [i];
+      if (PROFILE_PC_COUNT (profile) [i] > max_val)
+	max_val = PROFILE_PC_COUNT (profile) [i];
+    }
+
+  sim_io_printf (sd, "  Total samples: %s\n",
+		 COMMAS (total));
+  sim_io_printf (sd, "  Granularity: %s bytes per bucket\n",
+		 COMMAS (PROFILE_PC_BUCKET_SIZE (profile)));
+  sim_io_printf (sd, "  Size: %s buckets\n",
+		 COMMAS (PROFILE_PC_NR_BUCKETS (profile)));
+  sim_io_printf (sd, "  Frequency: %s cycles per sample\n",
+		 COMMAS (PROFILE_PC_FREQ (profile)));
+
+  if (PROFILE_PC_END (profile) != 0)
+    sim_io_printf (sd, "  Range: 0x%lx 0x%lx\n",
+		   (long) PROFILE_PC_START (profile),
+		   (long) PROFILE_PC_END (profile));
+
+  if (verbose && max_val != 0)
+    {
+      /* Now we can print the histogram.  */
+      sim_io_printf (sd, "\n");
+      for (i = 0; i <= PROFILE_PC_NR_BUCKETS (profile); ++i)
+	{
+	  if (PROFILE_PC_COUNT (profile) [i] != 0)
+	    {
+	      sim_io_printf (sd, "  ");
+	      if (i == PROFILE_PC_NR_BUCKETS (profile))
+		sim_io_printf (sd, "%10s:", "overflow");
+	      else
+		sim_io_printf (sd, "0x%08lx:",
+			       (long) (PROFILE_PC_START (profile)
+				       + (i * PROFILE_PC_BUCKET_SIZE (profile))));
+	      sim_io_printf (sd, " %*s",
+			     max_val < 10000 ? 5 : 10,
+			     COMMAS (PROFILE_PC_COUNT (profile) [i]));
+	      sim_io_printf (sd, " %4.1f",
+			     (PROFILE_PC_COUNT (profile) [i] * 100.0) / total);
+	      sim_io_printf (sd, ": ");
+	      sim_profile_print_bar (sd, PROFILE_HISTOGRAM_WIDTH,
+				     PROFILE_PC_COUNT (profile) [i],
+				     max_val);
+	      sim_io_printf (sd, "\n");
+	    }
+	}
+    }
+
+  /* dump the histogram to the file "gmon.out" using BSD's gprof file
+     format */
+  /* Since a profile data file is in the native format of the host on
+     which the profile is being, endian issues are not considered in
+     the code below. */
+  /* FIXME: Is this the best place for this code? */
+  {
+    FILE *pf = fopen ("gmon.out", "wb");
+    
+    if (pf == NULL)
+      sim_io_eprintf (sd, "Failed to open \"gmon.out\" profile file\n");
+    else
+      {
+	int ok;
+	/* FIXME: what if the target has a 64 bit PC? */
+	unsigned32 header[3];
+	unsigned loop;
+	if (PROFILE_PC_END (profile) != 0)
+	  {
+	    header[0] = PROFILE_PC_START (profile);
+	    header[1] = PROFILE_PC_END (profile);
+	  }
+	else
+	  {
+	    header[0] = 0;
+	    header[1] = 0;
+	  }
+	/* size of sample buffer (+ header) */
+	header[2] = PROFILE_PC_NR_BUCKETS (profile) * 2 + sizeof (header);
+	ok = fwrite (&header, sizeof (header), 1, pf);
+	for (loop = 0;
+	     ok && (loop < PROFILE_PC_NR_BUCKETS (profile));
+	     loop++)
+	  {
+	    signed16 sample;
+	    if (PROFILE_PC_COUNT (profile) [loop] >= 0xffff)
+	      sample = 0xffff;
+	    else
+	      sample = PROFILE_PC_COUNT (profile) [loop];
+	    ok = fwrite (&sample, sizeof (sample), 1, pf);
+	  }
+	if (ok == 0)
+	  sim_io_eprintf (sd, "Failed to write to \"gmon.out\" profile file\n");
+	fclose(pf);
+      }
+  }
+
+  sim_io_printf (sd, "\n");
+}
+
+#endif
+
+/* Summary printing support.  */
+
+#if WITH_PROFILE_INSN_P
+
+static SIM_RC
+profile_insn_init (SIM_DESC sd)
+{
+  int c;
+
+  for (c = 0; c < MAX_NR_PROCESSORS; ++c)
+    {
+      sim_cpu *cpu = STATE_CPU (sd, c);
+
+      if (CPU_MAX_INSNS (cpu) > 0)
+	PROFILE_INSN_COUNT (CPU_PROFILE_DATA (cpu)) = NZALLOC (unsigned int, CPU_MAX_INSNS (cpu));
+    }
+
+  return SIM_RC_OK;
+}
+
+static void
+profile_print_insn (sim_cpu *cpu, int verbose)
+{
+  unsigned int i, n, total, max_val, max_name_len;
+  SIM_DESC sd = CPU_STATE (cpu);
+  PROFILE_DATA *data = CPU_PROFILE_DATA (cpu);
+  char comma_buf[20];
+
+  /* If MAX_INSNS not set, insn profiling isn't supported.  */
+  if (CPU_MAX_INSNS (cpu) == 0)
+    return;
+
+  sim_io_printf (sd, "Instruction Statistics");
+#ifdef SIM_HAVE_ADDR_RANGE
+  if (PROFILE_RANGE (data)->ranges)
+    sim_io_printf (sd, " (for selected address range(s))");
+#endif
+  sim_io_printf (sd, "\n\n");
+
+  /* First pass over data computes various things.  */
+  max_val = 0;
+  total = 0;
+  max_name_len = 0;
+  for (i = 0; i < CPU_MAX_INSNS (cpu); ++i)
+    {
+      const char *name = (*CPU_INSN_NAME (cpu)) (cpu, i);
+
+      if (name == NULL)
+	continue;
+      total += PROFILE_INSN_COUNT (data) [i];
+      if (PROFILE_INSN_COUNT (data) [i] > max_val)
+	max_val = PROFILE_INSN_COUNT (data) [i];
+      n = strlen (name);
+      if (n > max_name_len)
+	max_name_len = n;
+    }
+  /* set the total insn count, in case client is being lazy */
+  if (! PROFILE_TOTAL_INSN_COUNT (data))
+    PROFILE_TOTAL_INSN_COUNT (data) = total;
+
+  sim_io_printf (sd, "  Total: %s insns\n", COMMAS (total));
+
+  if (verbose && max_val != 0)
+    {
+      /* Now we can print the histogram.  */
+      sim_io_printf (sd, "\n");
+      for (i = 0; i < CPU_MAX_INSNS (cpu); ++i)
+	{
+	  const char *name = (*CPU_INSN_NAME (cpu)) (cpu, i);
+
+	  if (name == NULL)
+	    continue;
+	  if (PROFILE_INSN_COUNT (data) [i] != 0)
+	    {
+	      sim_io_printf (sd, "   %*s: %*s: ",
+			     max_name_len, name,
+			     max_val < 10000 ? 5 : 10,
+			     COMMAS (PROFILE_INSN_COUNT (data) [i]));
+	      sim_profile_print_bar (sd, PROFILE_HISTOGRAM_WIDTH,
+				     PROFILE_INSN_COUNT (data) [i],
+				     max_val);
+	      sim_io_printf (sd, "\n");
+	    }
+	}
+    }
+
+  sim_io_printf (sd, "\n");
+}
+
+#endif
+
+#if WITH_PROFILE_MEMORY_P
+
+static void
+profile_print_memory (sim_cpu *cpu, int verbose)
+{
+  unsigned int i, n;
+  unsigned int total_read, total_write;
+  unsigned int max_val, max_name_len;
+  /* FIXME: Need to add smp support.  */
+  SIM_DESC sd = CPU_STATE (cpu);
+  PROFILE_DATA *data = CPU_PROFILE_DATA (cpu);
+  char comma_buf[20];
+
+  sim_io_printf (sd, "Memory Access Statistics\n\n");
+
+  /* First pass over data computes various things.  */
+  max_val = total_read = total_write = max_name_len = 0;
+  for (i = 0; i < MODE_TARGET_MAX; ++i)
+    {
+      total_read += PROFILE_READ_COUNT (data) [i];
+      total_write += PROFILE_WRITE_COUNT (data) [i];
+      if (PROFILE_READ_COUNT (data) [i] > max_val)
+	max_val = PROFILE_READ_COUNT (data) [i];
+      if (PROFILE_WRITE_COUNT (data) [i] > max_val)
+	max_val = PROFILE_WRITE_COUNT (data) [i];
+      n = strlen (MODE_NAME (i));
+      if (n > max_name_len)
+	max_name_len = n;
+    }
+
+  /* One could use PROFILE_LABEL_WIDTH here.  I chose not to.  */
+  sim_io_printf (sd, "  Total read:  %s accesses\n",
+		 COMMAS (total_read));
+  sim_io_printf (sd, "  Total write: %s accesses\n",
+		 COMMAS (total_write));
+
+  if (verbose && max_val != 0)
+    {
+      /* FIXME: Need to separate instruction fetches from data fetches
+	 as the former swamps the latter.  */
+      /* Now we can print the histogram.  */
+      sim_io_printf (sd, "\n");
+      for (i = 0; i < MODE_TARGET_MAX; ++i)
+	{
+	  if (PROFILE_READ_COUNT (data) [i] != 0)
+	    {
+	      sim_io_printf (sd, "   %*s read:  %*s: ",
+			     max_name_len, MODE_NAME (i),
+			     max_val < 10000 ? 5 : 10,
+			     COMMAS (PROFILE_READ_COUNT (data) [i]));
+	      sim_profile_print_bar (sd, PROFILE_HISTOGRAM_WIDTH,
+				     PROFILE_READ_COUNT (data) [i],
+				     max_val);
+	      sim_io_printf (sd, "\n");
+	    }
+	  if (PROFILE_WRITE_COUNT (data) [i] != 0)
+	    {
+	      sim_io_printf (sd, "   %*s write: %*s: ",
+			     max_name_len, MODE_NAME (i),
+			     max_val < 10000 ? 5 : 10,
+			     COMMAS (PROFILE_WRITE_COUNT (data) [i]));
+	      sim_profile_print_bar (sd, PROFILE_HISTOGRAM_WIDTH,
+				     PROFILE_WRITE_COUNT (data) [i],
+				     max_val);
+	      sim_io_printf (sd, "\n");
+	    }
+	}
+    }
+
+  sim_io_printf (sd, "\n");
+}
+
+#endif
+
+#if WITH_PROFILE_CORE_P
+
+static void
+profile_print_core (sim_cpu *cpu, int verbose)
+{
+  unsigned int total;
+  unsigned int max_val;
+  /* FIXME: Need to add smp support.  */
+  SIM_DESC sd = CPU_STATE (cpu);
+  PROFILE_DATA *data = CPU_PROFILE_DATA (cpu);
+  char comma_buf[20];
+
+  sim_io_printf (sd, "CORE Statistics\n\n");
+
+  /* First pass over data computes various things.  */
+  {
+    unsigned map;
+    total = 0;
+    max_val = 0;
+    for (map = 0; map < nr_maps; map++)
+      {
+	total += PROFILE_CORE_COUNT (data) [map];
+	if (PROFILE_CORE_COUNT (data) [map] > max_val)
+	  max_val = PROFILE_CORE_COUNT (data) [map];
+      }
+  }
+
+  /* One could use PROFILE_LABEL_WIDTH here.  I chose not to.  */
+  sim_io_printf (sd, "  Total:  %s accesses\n",
+		 COMMAS (total));
+
+  if (verbose && max_val != 0)
+    {
+      unsigned map;
+      /* Now we can print the histogram.  */
+      sim_io_printf (sd, "\n");
+      for (map = 0; map < nr_maps; map++)
+	{
+	  if (PROFILE_CORE_COUNT (data) [map] != 0)
+	    {
+	      sim_io_printf (sd, "%10s:", map_to_str (map));
+	      sim_io_printf (sd, "%*s: ",
+			     max_val < 10000 ? 5 : 10,
+			     COMMAS (PROFILE_CORE_COUNT (data) [map]));
+	      sim_profile_print_bar (sd, PROFILE_HISTOGRAM_WIDTH,
+				     PROFILE_CORE_COUNT (data) [map],
+				     max_val);
+	      sim_io_printf (sd, "\n");
+	    }
+	}
+    }
+
+  sim_io_printf (sd, "\n");
+}
+
+#endif
+
+#if WITH_PROFILE_MODEL_P
+
+static void
+profile_print_model (sim_cpu *cpu, int verbose)
+{
+  SIM_DESC sd = CPU_STATE (cpu);
+  PROFILE_DATA *data = CPU_PROFILE_DATA (cpu);
+  unsigned long cti_stall_cycles = PROFILE_MODEL_CTI_STALL_CYCLES (data);
+  unsigned long load_stall_cycles = PROFILE_MODEL_LOAD_STALL_CYCLES (data);
+  unsigned long total_cycles = PROFILE_MODEL_TOTAL_CYCLES (data);
+  char comma_buf[20];
+
+  sim_io_printf (sd, "Model %s Timing Information",
+		 MODEL_NAME (CPU_MODEL (cpu)));
+#ifdef SIM_HAVE_ADDR_RANGE
+  if (PROFILE_RANGE (data)->ranges)
+    sim_io_printf (sd, " (for selected address range(s))");
+#endif
+  sim_io_printf (sd, "\n\n");
+  sim_io_printf (sd, "  %-*s %s\n",
+		 PROFILE_LABEL_WIDTH, "Taken branches:",
+		 COMMAS (PROFILE_MODEL_TAKEN_COUNT (data)));
+  sim_io_printf (sd, "  %-*s %s\n",
+		 PROFILE_LABEL_WIDTH, "Untaken branches:",
+		 COMMAS (PROFILE_MODEL_UNTAKEN_COUNT (data)));
+  sim_io_printf (sd, "  %-*s %s\n",
+		 PROFILE_LABEL_WIDTH, "Cycles stalled due to branches:",
+		 COMMAS (cti_stall_cycles));
+  sim_io_printf (sd, "  %-*s %s\n",
+		 PROFILE_LABEL_WIDTH, "Cycles stalled due to loads:",
+		 COMMAS (load_stall_cycles));
+  sim_io_printf (sd, "  %-*s %s\n",
+		 PROFILE_LABEL_WIDTH, "Total cycles (*approximate*):",
+		 COMMAS (total_cycles));
+  sim_io_printf (sd, "\n");
+}
+
+#endif
+
+void
+sim_profile_print_bar (SIM_DESC sd, unsigned int width,
+		       unsigned int val, unsigned int max_val)
+{
+  unsigned int i, count;
+
+  count = ((double) val / (double) max_val) * (double) width;
+
+  for (i = 0; i < count; ++i)
+    sim_io_printf (sd, "*");
+}
+
+/* Print the simulator's execution speed for CPU.  */
+
+static void
+profile_print_speed (sim_cpu *cpu)
+{
+  SIM_DESC sd = CPU_STATE (cpu);
+  PROFILE_DATA *data = CPU_PROFILE_DATA (cpu);
+  unsigned long milliseconds = sim_events_elapsed_time (sd);
+  unsigned long total = PROFILE_TOTAL_INSN_COUNT (data);
+  char comma_buf[20];
+
+  sim_io_printf (sd, "Simulator Execution Speed\n\n");
+
+  if (total != 0)
+    sim_io_printf (sd, "  Total instructions:   %s\n", COMMAS (total));
+
+  if (milliseconds < 1000)
+    sim_io_printf (sd, "  Total execution time: < 1 second\n\n");
+  else
+    {
+      /* The printing of the time rounded to 2 decimal places makes the speed
+	 calculation seem incorrect [even though it is correct].  So round
+	 MILLISECONDS first. This can marginally affect the result, but it's
+	 better that the user not perceive there's a math error.  */
+      double secs = (double) milliseconds / 1000;
+      secs = ((double) (unsigned long) (secs * 100 + .5)) / 100;
+      sim_io_printf (sd, "  Total execution time: %.2f seconds\n", secs);
+      /* Don't confuse things with data that isn't useful.
+	 If we ran for less than 2 seconds, only use the data if we
+	 executed more than 100,000 insns.  */
+      if (secs >= 2 || total >= 100000)
+	sim_io_printf (sd, "  Simulator speed:      %s insns/second\n\n",
+		       COMMAS ((unsigned long) ((double) total / secs)));
+    }
+}
+
+/* Print selected address ranges.  */
+
+static void
+profile_print_addr_ranges (sim_cpu *cpu)
+{
+  ADDR_SUBRANGE *asr = PROFILE_RANGE (CPU_PROFILE_DATA (cpu))->ranges;
+  SIM_DESC sd = CPU_STATE (cpu);
+
+  if (asr)
+    {
+      sim_io_printf (sd, "Selected address ranges\n\n");
+      while (asr != NULL)
+	{
+	  sim_io_printf (sd, "  0x%lx - 0x%lx\n",
+			 (long) asr->start, (long) asr->end);
+	  asr = asr->next;
+	}
+      sim_io_printf (sd, "\n");
+    }
+}
+
+/* Top level function to print all summary profile information.
+   It is [currently] intended that all such data is printed by this function.
+   I'd rather keep it all in one place for now.  To that end, MISC_CPU and
+   MISC are callbacks used to print any miscellaneous data.
+
+   One might want to add a user option that allows printing by type or by cpu
+   (i.e. print all insn data for each cpu first, or print data cpu by cpu).
+   This may be a case of featuritis so it's currently left out.
+
+   Note that results are indented two spaces to distinguish them from
+   section titles.  */
+
+static void
+profile_info (SIM_DESC sd, int verbose)
+{
+  int i,c;
+  int print_title_p = 0;
+
+  /* Only print the title if some data has been collected.  */
+  /* ??? Why don't we just exit if no data collected?  */
+  /* FIXME: If the number of processors can be selected on the command line,
+     then MAX_NR_PROCESSORS will need to take an argument of `sd'.  */
+
+  for (c = 0; c < MAX_NR_PROCESSORS; ++c)
+    {
+      sim_cpu *cpu = STATE_CPU (sd, c);
+      PROFILE_DATA *data = CPU_PROFILE_DATA (cpu);
+
+      for (i = 0; i < MAX_PROFILE_VALUES; ++i)
+	if (PROFILE_FLAGS (data) [i])
+	  print_title_p = 1;
+      /* One could break out early if print_title_p is set.  */
+    }
+  if (print_title_p)
+    sim_io_printf (sd, "Summary profiling results:\n\n");
+
+  /* Loop, cpu by cpu, printing results.  */
+
+  for (c = 0; c < MAX_NR_PROCESSORS; ++c)
+    {
+      sim_cpu *cpu = STATE_CPU (sd, c);
+      PROFILE_DATA *data = CPU_PROFILE_DATA (cpu);
+
+      if (MAX_NR_PROCESSORS > 1
+	  && (0
+#if WITH_PROFILE_INSN_P
+	      || PROFILE_FLAGS (data) [PROFILE_INSN_IDX]
+#endif
+#if WITH_PROFILE_MEMORY_P
+	      || PROFILE_FLAGS (data) [PROFILE_MEMORY_IDX]
+#endif
+#if WITH_PROFILE_CORE_P
+	      || PROFILE_FLAGS (data) [PROFILE_CORE_IDX]
+#endif
+#if WITH_PROFILE_MODEL_P
+	      || PROFILE_FLAGS (data) [PROFILE_MODEL_IDX]
+#endif
+#if WITH_PROFILE_SCACHE_P && WITH_SCACHE
+	      || PROFILE_FLAGS (data) [PROFILE_SCACHE_IDX]
+#endif
+#if WITH_PROFILE_PC_P
+	      || PROFILE_FLAGS (data) [PROFILE_PC_IDX]
+#endif
+	      ))
+	{
+	  sim_io_printf (sd, "CPU %d\n\n", c);
+	}
+
+#ifdef SIM_HAVE_ADDR_RANGE
+      if (print_title_p
+	  && (PROFILE_INSN_P (cpu)
+	      || PROFILE_MODEL_P (cpu)))
+	profile_print_addr_ranges (cpu);
+#endif
+
+#if WITH_PROFILE_INSN_P
+      if (PROFILE_FLAGS (data) [PROFILE_INSN_IDX])
+	profile_print_insn (cpu, verbose);
+#endif
+
+#if WITH_PROFILE_MEMORY_P
+      if (PROFILE_FLAGS (data) [PROFILE_MEMORY_IDX])
+	profile_print_memory (cpu, verbose);
+#endif
+
+#if WITH_PROFILE_CORE_P
+      if (PROFILE_FLAGS (data) [PROFILE_CORE_IDX])
+	profile_print_core (cpu, verbose);
+#endif
+
+#if WITH_PROFILE_MODEL_P
+      if (PROFILE_FLAGS (data) [PROFILE_MODEL_IDX])
+	profile_print_model (cpu, verbose);
+#endif
+
+#if WITH_PROFILE_SCACHE_P && WITH_SCACHE
+      if (PROFILE_FLAGS (data) [PROFILE_SCACHE_IDX])
+	scache_print_profile (cpu, verbose);
+#endif
+
+#if WITH_PROFILE_PC_P
+      if (PROFILE_FLAGS (data) [PROFILE_PC_IDX])
+	profile_print_pc (cpu, verbose);
+#endif
+
+      /* Print cpu-specific data before the execution speed.  */
+      if (PROFILE_INFO_CPU_CALLBACK (data) != NULL)
+	PROFILE_INFO_CPU_CALLBACK (data) (cpu, verbose);
+
+      /* Always try to print execution time and speed.  */
+      if (verbose
+	  || PROFILE_FLAGS (data) [PROFILE_INSN_IDX])
+	profile_print_speed (cpu);
+    }
+
+  /* Finally print non-cpu specific miscellaneous data.  */
+  if (STATE_PROFILE_INFO_CALLBACK (sd))
+    STATE_PROFILE_INFO_CALLBACK (sd) (sd, verbose);
+
+}
+
+/* Install profiling support in the simulator.  */
+
+SIM_RC
+profile_install (SIM_DESC sd)
+{
+  int i;
+
+  SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
+  sim_add_option_table (sd, NULL, profile_options);
+  for (i = 0; i < MAX_NR_PROCESSORS; ++i)
+    memset (CPU_PROFILE_DATA (STATE_CPU (sd, i)), 0,
+	    sizeof (* CPU_PROFILE_DATA (STATE_CPU (sd, i))));
+#if WITH_PROFILE_INSN_P
+  sim_module_add_init_fn (sd, profile_insn_init);
+#endif
+#if WITH_PROFILE_PC_P
+  sim_module_add_uninstall_fn (sd, profile_pc_uninstall);
+  sim_module_add_init_fn (sd, profile_pc_init);
+#endif
+  sim_module_add_init_fn (sd, profile_init);
+  sim_module_add_uninstall_fn (sd, profile_uninstall);
+  sim_module_add_info_fn (sd, profile_info);
+  return SIM_RC_OK;
+}
+
+static SIM_RC
+profile_init (SIM_DESC sd)
+{
+#ifdef SIM_HAVE_ADDR_RANGE
+  /* Check if a range has been specified without specifying what to
+     collect.  */
+  {
+    int i;
+
+    for (i = 0; i < MAX_NR_PROCESSORS; ++i)
+      {
+	sim_cpu *cpu = STATE_CPU (sd, i);
+
+	if (ADDR_RANGE_RANGES (PROFILE_RANGE (CPU_PROFILE_DATA (cpu)))
+	    && ! (PROFILE_INSN_P (cpu)
+		  || PROFILE_MODEL_P (cpu)))
+	  {
+	    sim_io_eprintf_cpu (cpu, "Profiling address range specified without --profile-insn or --profile-model.\n");
+	    sim_io_eprintf_cpu (cpu, "Address range ignored.\n");
+	    sim_addr_range_delete (PROFILE_RANGE (CPU_PROFILE_DATA (cpu)),
+				   0, ~ (address_word) 0);
+	  }
+      }
+  }
+#endif
+
+  return SIM_RC_OK;
+}
+
+static void
+profile_uninstall (SIM_DESC sd)
+{
+  int i,j;
+
+  for (i = 0; i < MAX_NR_PROCESSORS; ++i)
+    {
+      sim_cpu *cpu = STATE_CPU (sd, i);
+      PROFILE_DATA *data = CPU_PROFILE_DATA (cpu);
+
+      if (PROFILE_FILE (data) != NULL)
+	{
+	  /* If output from different cpus is going to the same file,
+	     avoid closing the file twice.  */
+	  for (j = 0; j < i; ++j)
+	    if (PROFILE_FILE (CPU_PROFILE_DATA (STATE_CPU (sd, j)))
+		== PROFILE_FILE (data))
+	      break;
+	  if (i == j)
+	    fclose (PROFILE_FILE (data));
+	}
+
+      if (PROFILE_INSN_COUNT (data) != NULL)
+	zfree (PROFILE_INSN_COUNT (data));
+    }
+}