2317a49939
* sim-basics.h (sim_add_commas): Add prototype. * cgen-scache.c (scache_print_profile): Print commas in numbers. * sim-profile.c (COMMAS): New macro. (print_*): Use it to print commas in numbers.
482 lines
14 KiB
C
482 lines
14 KiB
C
/* Default profiling support.
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Copyright (C) 1996, 1997 Free Software Foundation, Inc.
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Contributed by Cygnus Support.
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This file is part of GDB, the GNU debugger.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "sim-main.h"
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#include "sim-io.h"
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#include "sim-options.h"
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#define COMMAS(n) sim_add_commas (comma_buf, sizeof (comma_buf), (n))
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static MODULE_UNINSTALL_FN profile_uninstall;
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static void print_bar (SIM_DESC, unsigned int, unsigned int, unsigned int);
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static DECLARE_OPTION_HANDLER (profile_option_handler);
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#define OPTION_PROFILE_INSN (OPTION_START + 0)
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#define OPTION_PROFILE_MEMORY (OPTION_START + 1)
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#define OPTION_PROFILE_MODEL (OPTION_START + 2)
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#define OPTION_PROFILE_FILE (OPTION_START + 3)
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#define OPTION_PROFILE_RANGE (OPTION_START + 4)
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static const OPTION profile_options[] = {
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{ {"profile", no_argument, NULL, 'p'},
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'p', NULL, "Perform profiling",
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profile_option_handler },
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{ {"profile-insn", no_argument, NULL, OPTION_PROFILE_INSN},
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'\0', NULL, "Perform instruction profiling",
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profile_option_handler },
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{ {"profile-memory", no_argument, NULL, OPTION_PROFILE_MEMORY},
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'\0', NULL, "Perform memory profiling",
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profile_option_handler },
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{ {"profile-model", no_argument, NULL, OPTION_PROFILE_MODEL},
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'\0', NULL, "Perform model profiling",
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profile_option_handler },
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{ {"profile-file", required_argument, NULL, OPTION_PROFILE_FILE},
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'\0', "FILE NAME", "Specify profile output file",
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profile_option_handler },
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{ {"profile-pc-frequency", required_argument, NULL, 'F'},
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'F', "PC PROFILE FREQUENCY", "Turn on PC profiling at specified frequency",
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profile_option_handler },
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{ {"profile-pc-size", required_argument, NULL, 'S'},
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'S', "PC PROFILE SIZE", "Specify PC profiling size",
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profile_option_handler },
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#if 0 /*FIXME:wip*/
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{ {"profile-range", required_argument, NULL, OPTION_PROFILE_RANGE},
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0, NULL, "Specify range of addresses to profile",
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profile_option_handler },
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#endif
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{ {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
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};
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static SIM_RC
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profile_option_handler (SIM_DESC sd, int opt, char *arg)
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{
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int i,n;
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switch (opt)
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{
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case 'p' :
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if (! WITH_PROFILE)
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sim_io_eprintf (sd, "Profiling not compiled in, -p option ignored\n");
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else
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{
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for (n = 0; n < MAX_NR_PROCESSORS; ++n)
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for (i = 0; i < MAX_PROFILE_VALUES; ++i)
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CPU_PROFILE_FLAGS (STATE_CPU (sd, n))[i] = 1;
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}
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break;
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case OPTION_PROFILE_INSN :
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#if WITH_PROFILE_INSN_P
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for (n = 0; n < MAX_NR_PROCESSORS; ++n)
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CPU_PROFILE_FLAGS (STATE_CPU (sd, n))[PROFILE_INSN_IDX] = 1;
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#else
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sim_io_eprintf (sd, "Instruction profiling not compiled in, `--profile-insn' ignored\n");
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#endif
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break;
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case OPTION_PROFILE_MEMORY :
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#if WITH_PROFILE_MEMORY_P
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for (n = 0; n < MAX_NR_PROCESSORS; ++n)
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CPU_PROFILE_FLAGS (STATE_CPU (sd, n))[PROFILE_MEMORY_IDX] = 1;
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#else
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sim_io_eprintf (sd, "Memory profiling not compiled in, `--profile-memory' ignored\n");
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#endif
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break;
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case OPTION_PROFILE_MODEL :
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#if WITH_PROFILE_MODEL_P
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for (n = 0; n < MAX_NR_PROCESSORS; ++n)
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CPU_PROFILE_FLAGS (STATE_CPU (sd, n))[PROFILE_MODEL_IDX] = 1;
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#else
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sim_io_eprintf (sd, "Model profiling not compiled in, `--profile-model' ignored\n");
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#endif
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break;
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case OPTION_PROFILE_FILE :
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/* FIXME: Might want this to apply to pc profiling only,
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or have two profile file options. */
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if (! WITH_PROFILE)
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sim_io_eprintf (sd, "Profiling not compiled in, `--profile-file' ignored\n");
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else
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{
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FILE *f = fopen (arg, "w");
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if (f == NULL)
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{
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sim_io_eprintf (sd, "Unable to open profile output file `%s'\n", arg);
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return SIM_RC_FAIL;
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}
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for (n = 0; n < MAX_NR_PROCESSORS; ++n)
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PROFILE_FILE (CPU_PROFILE_DATA (STATE_CPU (sd, n))) = f;
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}
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break;
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case 'F' :
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#if WITH_PROFILE_PC_P
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/* FIXME: Validate arg. */
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i = atoi (arg);
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for (n = 0; n < MAX_NR_PROCESSORS; ++n)
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PROFILE_PC_FREQ (CPU_PROFILE_DATA (STATE_CPU (sd, n))) = i;
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#else
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sim_io_eprintf (sd, "PC profiling not compiled in, `--profile-pc-frequency' ignored\n");
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#endif
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break;
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case 'S' :
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#if WITH_PROFILE_PC_P
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/* FIXME: Validate arg. */
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i = atoi (arg);
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for (n = 0; n < MAX_NR_PROCESSORS; ++n)
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PROFILE_PC_SIZE (CPU_PROFILE_DATA (STATE_CPU (sd, n))) = i;
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#else
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sim_io_eprintf (sd, "PC profiling not compiled in, `--profile-pc-size' ignored\n");
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#endif
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break;
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#if 0 /* FIXME:wip */
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case OPTION_PROFILE_RANGE :
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break;
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#endif
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}
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return SIM_RC_OK;
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}
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/* Install profiling support in the simulator. */
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SIM_RC
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profile_install (SIM_DESC sd)
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{
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int i;
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sim_add_option_table (sd, profile_options);
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for (i = 0; i < MAX_NR_PROCESSORS; ++i)
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memset (CPU_PROFILE_DATA (STATE_CPU (sd, i)), 0,
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sizeof (* CPU_PROFILE_DATA (STATE_CPU (sd, i))));
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sim_module_add_uninstall_fn (sd, profile_uninstall);
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return SIM_RC_OK;
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}
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static void
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profile_uninstall (SIM_DESC sd)
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{
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int i;
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for (i = 0; i < MAX_NR_PROCESSORS; ++i)
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{
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PROFILE_DATA *data = CPU_PROFILE_DATA (STATE_CPU (sd, i));
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if (PROFILE_FILE (data) != NULL)
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fclose (PROFILE_FILE (data));
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}
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}
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/* Summary printing support. */
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#if WITH_PROFILE_INSN_P
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static void
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profile_print_insn (sim_cpu *cpu, int verbose)
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{
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unsigned int i, n, total, max_val, max_name_len;
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SIM_DESC sd = CPU_STATE (cpu);
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PROFILE_DATA *data = CPU_PROFILE_DATA (cpu);
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char comma_buf[20];
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sim_io_printf (sd, "Instruction Statistics\n\n");
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/* First pass over data computes various things. */
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max_val = total = max_name_len = 0;
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for (i = 1; i < MAX_INSNS; ++i)
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{
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total += PROFILE_INSN_COUNT (data) [i];
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if (PROFILE_INSN_COUNT (data) [i] > max_val)
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max_val = PROFILE_INSN_COUNT (data) [i];
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n = strlen (INSN_NAME (i));
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if (n > max_name_len)
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max_name_len = n;
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}
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sim_io_printf (sd, " Total: %s insns\n", COMMAS (total));
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if (verbose && max_val != 0)
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{
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/* Now we can print the histogram. */
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sim_io_printf (sd, "\n");
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for (i = 1; i < MAX_INSNS; ++i)
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{
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if (PROFILE_INSN_COUNT (data) [i] != 0)
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{
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sim_io_printf (sd, " %*s: %*s: ",
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max_name_len, INSN_NAME (i),
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max_val < 10000 ? 5 : 10,
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COMMAS (PROFILE_INSN_COUNT (data) [i]));
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print_bar (sd, PROFILE_HISTOGRAM_WIDTH,
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PROFILE_INSN_COUNT (data) [i],
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max_val);
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sim_io_printf (sd, "\n");
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}
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}
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}
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sim_io_printf (sd, "\n");
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}
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#endif
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#if WITH_PROFILE_MEMORY_P
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static void
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profile_print_memory (sim_cpu *cpu, int verbose)
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{
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unsigned int i, n;
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unsigned int total_read, total_write;
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unsigned int max_val, max_name_len;
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/* FIXME: Need to add smp support. */
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SIM_DESC sd = CPU_STATE (cpu);
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PROFILE_DATA *data = CPU_PROFILE_DATA (cpu);
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char comma_buf[20];
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sim_io_printf (sd, "Memory Access Statistics\n\n");
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/* First pass over data computes various things. */
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max_val = total_read = total_write = max_name_len = 0;
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for (i = 0; i < MAX_MODES; ++i)
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{
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total_read += PROFILE_READ_COUNT (data) [i];
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total_write += PROFILE_WRITE_COUNT (data) [i];
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if (PROFILE_READ_COUNT (data) [i] > max_val)
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max_val = PROFILE_READ_COUNT (data) [i];
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if (PROFILE_WRITE_COUNT (data) [i] > max_val)
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max_val = PROFILE_WRITE_COUNT (data) [i];
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n = strlen (MODE_NAME (i));
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if (n > max_name_len)
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max_name_len = n;
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}
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/* One could use PROFILE_LABEL_WIDTH here. I chose not to. */
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sim_io_printf (sd, " Total read: %s accesses\n",
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COMMAS (total_read));
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sim_io_printf (sd, " Total write: %s accesses\n",
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COMMAS (total_write));
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if (verbose && max_val != 0)
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{
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/* FIXME: Need to separate instruction fetches from data fetches
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as the former swamps the latter. */
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/* Now we can print the histogram. */
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sim_io_printf (sd, "\n");
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for (i = 0; i < MAX_MODES; ++i)
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{
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if (PROFILE_READ_COUNT (data) [i] != 0)
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{
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sim_io_printf (sd, " %*s read: %*s: ",
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max_name_len, MODE_NAME (i),
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max_val < 10000 ? 5 : 10,
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COMMAS (PROFILE_READ_COUNT (data) [i]));
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print_bar (sd, PROFILE_HISTOGRAM_WIDTH,
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PROFILE_READ_COUNT (data) [i],
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max_val);
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sim_io_printf (sd, "\n");
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}
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if (PROFILE_WRITE_COUNT (data) [i] != 0)
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{
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sim_io_printf (sd, " %*s write: %*s: ",
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max_name_len, MODE_NAME (i),
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max_val < 10000 ? 5 : 10,
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COMMAS (PROFILE_WRITE_COUNT (data) [i]));
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print_bar (sd, PROFILE_HISTOGRAM_WIDTH,
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PROFILE_WRITE_COUNT (data) [i],
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max_val);
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sim_io_printf (sd, "\n");
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}
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}
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}
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sim_io_printf (sd, "\n");
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}
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#endif
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#if WITH_PROFILE_MODEL_P
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static void
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profile_print_model (sim_cpu *cpu, int verbose)
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{
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SIM_DESC sd = CPU_STATE (cpu);
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PROFILE_DATA *data = CPU_PROFILE_DATA (cpu);
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unsigned long cti_stalls = PROFILE_MODEL_CTI_STALL_COUNT (data);
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unsigned long load_stalls = PROFILE_MODEL_LOAD_STALL_COUNT (data);
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unsigned long total = PROFILE_MODEL_CYCLE_COUNT (data)
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+ cti_stalls + load_stalls;
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char comma_buf[20];
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sim_io_printf (sd, "Model %s Timing Information\n\n",
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MODEL_NAME (STATE_MODEL (sd)));
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sim_io_printf (sd, " %-*s %s\n",
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PROFILE_LABEL_WIDTH, "Taken branches:",
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COMMAS (PROFILE_MODEL_TAKEN_COUNT (data)));
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sim_io_printf (sd, " %-*s %s\n",
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PROFILE_LABEL_WIDTH, "Untaken branches:",
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COMMAS (PROFILE_MODEL_UNTAKEN_COUNT (data)));
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sim_io_printf (sd, " %-*s %s\n",
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PROFILE_LABEL_WIDTH, "Cycles stalled due to branches:",
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COMMAS (cti_stalls));
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sim_io_printf (sd, " %-*s %s\n",
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PROFILE_LABEL_WIDTH, "Cycles stalled due to loads:",
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COMMAS (load_stalls));
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sim_io_printf (sd, " %-*s %s\n",
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PROFILE_LABEL_WIDTH, "Total cycles (*approximate*):",
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COMMAS (total));
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sim_io_printf (sd, "\n");
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}
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#endif
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static void
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print_bar (SIM_DESC sd, unsigned int width,
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unsigned int val, unsigned int max_val)
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{
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unsigned int i, count;
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count = ((double) val / (double) max_val) * (double) width;
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for (i = 0; i < count; ++i)
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sim_io_printf (sd, "*");
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}
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/* Print the simulator's execution speed for CPU. */
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static void
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profile_print_speed (sim_cpu *cpu)
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{
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SIM_DESC sd = CPU_STATE (cpu);
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PROFILE_DATA *data = CPU_PROFILE_DATA (cpu);
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unsigned long milliseconds = PROFILE_EXEC_TIME (data);
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unsigned long total = PROFILE_TOTAL_INSN_COUNT (data);
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char comma_buf[20];
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sim_io_printf (sd, "Simulator Execution Speed\n\n");
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if (total != 0)
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sim_io_printf (sd, " Total instructions: %s\n", COMMAS (total));
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if (milliseconds < 1000)
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sim_io_printf (sd, " Total Execution Time: < 1 second\n\n");
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else
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{
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/* The printing of the time rounded to 2 decimal places makes the speed
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calculation seem incorrect [even though it is correct]. So round
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MILLISECONDS first. This can marginally affect the result, but it's
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better that the user not perceive there's a math error. */
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double secs = (double) milliseconds / 1000;
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secs = ((double) (unsigned long) (secs * 100 + .5)) / 100;
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sim_io_printf (sd, " Total Execution Time: %.2f seconds\n", secs);
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/* Don't confuse things with data that isn't useful.
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If we ran for less than 2 seconds, only use the data if we
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executed more than 100,000 insns. */
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if (secs >= 2 || total >= 100000)
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sim_io_printf (sd, " Simulator Speed: %s insns/second\n\n",
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COMMAS ((unsigned long) ((double) total / secs)));
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}
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}
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/* Top level function to print all summary profile information.
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It is [currently] intended that all such data is printed by this function.
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I'd rather keep it all in one place for now. To that end, MISC_CPU and
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MISC are callbacks used to print any miscellaneous data.
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One might want to add a user option that allows printing by type or by cpu
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(i.e. print all insn data for each cpu first, or print data cpu by cpu).
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This may be a case of featuritis so it's currently left out.
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Note that results are indented two spaces to distinguish them from
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section titles. */
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void
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profile_print (SIM_DESC sd, int verbose,
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PROFILE_CALLBACK *misc, PROFILE_CPU_CALLBACK *misc_cpu)
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{
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int i,c;
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int print_title_p = 0;
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/* Only print the title if some data has been collected. */
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/* FIXME: If the number of processors can be selected on the command line,
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then MAX_NR_PROCESSORS will need to take an argument of `sd'. */
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for (c = 0; c < MAX_NR_PROCESSORS; ++c)
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{
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sim_cpu *cpu = STATE_CPU (sd, c);
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PROFILE_DATA *data = CPU_PROFILE_DATA (cpu);
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for (i = 0; i < MAX_PROFILE_VALUES; ++i)
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if (PROFILE_FLAGS (data) [i])
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print_title_p = 1;
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/* One could break out early if print_title_p is set. */
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}
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if (print_title_p)
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sim_io_printf (sd, "Summary profiling results:\n\n");
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/* Loop, cpu by cpu, printing results. */
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for (c = 0; c < MAX_NR_PROCESSORS; ++c)
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{
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sim_cpu *cpu = STATE_CPU (sd, c);
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PROFILE_DATA *data = CPU_PROFILE_DATA (cpu);
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if (MAX_NR_PROCESSORS > 1)
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sim_io_printf (sd, "CPU %d\n\n", c);
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#if WITH_PROFILE_INSN_P
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if (PROFILE_FLAGS (data) [PROFILE_INSN_IDX])
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profile_print_insn (cpu, verbose);
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#endif
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#if WITH_PROFILE_MEMORY_P
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if (PROFILE_FLAGS (data) [PROFILE_MEMORY_IDX])
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profile_print_memory (cpu, verbose);
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#endif
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#if WITH_PROFILE_MODEL_P
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if (PROFILE_FLAGS (data) [PROFILE_MODEL_IDX])
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profile_print_model (cpu, verbose);
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#endif
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#if WITH_PROFILE_SCACHE_P && WITH_SCACHE
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if (PROFILE_FLAGS (data) [PROFILE_SCACHE_IDX])
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scache_print_profile (cpu, verbose);
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#endif
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/* Print cpu-specific data before the execution speed. */
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if (misc_cpu != NULL)
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(*misc_cpu) (cpu, verbose);
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/* Always try to print execution time and speed. */
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if (verbose
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|| PROFILE_FLAGS (data) [PROFILE_INSN_IDX])
|
||
profile_print_speed (cpu);
|
||
}
|
||
|
||
/* Finally print non-cpu specific miscellaneous data. */
|
||
|
||
if (misc != NULL)
|
||
(*misc) (sd, verbose);
|
||
}
|