975 lines
28 KiB
C
975 lines
28 KiB
C
/* Default profiling support.
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Copyright (C) 1996, 1997, 1998 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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#include "sim-assert.h"
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#else
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#ifdef HAVE_STRINGS_H
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#include <strings.h>
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#endif
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#endif
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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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#if WITH_PROFILE_INSN_P || WITH_PROFILE_MEMORY_P || WITH_PROFILE_CORE_P || WITH_PROFILE_PC_P
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static void print_bar (SIM_DESC, unsigned int, unsigned int, unsigned int);
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#endif
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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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#define OPTION_PROFILE_CORE (OPTION_START + 5)
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#define OPTION_PROFILE_PC (OPTION_START + 6)
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#define OPTION_PROFILE_PC_RANGE (OPTION_START + 7)
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#define OPTION_PROFILE_PC_GRANULARITY (OPTION_START + 8)
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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-core", no_argument, NULL, OPTION_PROFILE_CORE},
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'\0', NULL, "Perform CORE 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", no_argument, NULL, OPTION_PROFILE_PC},
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'\0', NULL, "Perform PC profiling",
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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", "Specified PC profiling 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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{ {"profile-pc-granularity", required_argument, NULL, OPTION_PROFILE_PC_GRANULARITY},
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'\0', "PC PROFILE GRANULARITY", "Specify PC profiling sample coverage",
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profile_option_handler },
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{ {"profile-pc-range", required_argument, NULL, OPTION_PROFILE_PC_RANGE},
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'\0', "BASE,BOUND", "Specify PC profiling address range",
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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,
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sim_cpu *cpu,
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int opt,
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char *arg,
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int is_command)
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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_CORE :
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#if WITH_PROFILE_CORE_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_CORE_IDX] = 1;
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#else
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sim_io_eprintf (sd, "CORE profiling not compiled in, `--profile-core' 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 OPTION_PROFILE_PC:
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if (WITH_PROFILE_PC_P)
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{
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for (n = 0; n < MAX_NR_PROCESSORS; ++n)
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CPU_PROFILE_FLAGS (STATE_CPU (sd, n))[PROFILE_PC_IDX] = 1;
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}
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else
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sim_io_eprintf (sd, "PC profiling not compiled in, `--profile-pc' ignored\n");
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break;
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case 'F' :
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if (WITH_PROFILE_PC_P)
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{
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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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for (n = 0; n < MAX_NR_PROCESSORS; ++n)
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CPU_PROFILE_FLAGS (STATE_CPU (sd, n))[PROFILE_PC_IDX] = 1;
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}
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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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break;
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case 'S' :
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if (WITH_PROFILE_PC_P)
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{
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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_NR_BUCKETS (CPU_PROFILE_DATA (STATE_CPU (sd, n))) = i;
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for (n = 0; n < MAX_NR_PROCESSORS; ++n)
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CPU_PROFILE_FLAGS (STATE_CPU (sd, n))[PROFILE_PC_IDX] = 1;
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}
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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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break;
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case OPTION_PROFILE_PC_GRANULARITY:
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if (WITH_PROFILE_PC_P)
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{
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int shift;
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i = atoi (arg);
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/* check that the granularity is a power of two */
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shift = 0;
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while (i > (1 << shift))
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{
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shift += 1;
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}
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if (i != (1 << shift))
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{
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sim_io_eprintf (sd, "PC profiling granularity not a power of two\n");
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return SIM_RC_FAIL;
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}
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if (shift == 0)
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{
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sim_io_eprintf (sd, "PC profiling granularity too small");
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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_PC_SHIFT (CPU_PROFILE_DATA (STATE_CPU (sd, n))) = shift;
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for (n = 0; n < MAX_NR_PROCESSORS; ++n)
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CPU_PROFILE_FLAGS (STATE_CPU (sd, n))[PROFILE_PC_IDX] = 1;
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}
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else
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sim_io_eprintf (sd, "PC profiling not compiled in, `--profile-pc-granularity' ignored\n");
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break;
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case OPTION_PROFILE_PC_RANGE:
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if (WITH_PROFILE_PC_P)
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{
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/* FIXME: Validate args */
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char *chp = arg;
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unsigned long base;
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unsigned long bound;
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base = strtoul (chp, &chp, 0);
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if (*chp != ',')
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{
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sim_io_eprintf (sd, "--profile-pc-range missing BOUND argument\n");
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return SIM_RC_FAIL;
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}
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bound = strtoul (chp + 1, NULL, 0);
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for (n = 0; n < MAX_NR_PROCESSORS; ++n)
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{
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PROFILE_PC_START (CPU_PROFILE_DATA (STATE_CPU (sd, n))) = base;
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PROFILE_PC_END (CPU_PROFILE_DATA (STATE_CPU (sd, n))) = bound;
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}
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for (n = 0; n < MAX_NR_PROCESSORS; ++n)
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CPU_PROFILE_FLAGS (STATE_CPU (sd, n))[PROFILE_PC_IDX] = 1;
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}
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else
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sim_io_eprintf (sd, "PC profiling not compiled in, `--profile-pc-range' ignored\n");
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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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/* PC profiling support */
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#if WITH_PROFILE_PC_P
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static void
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profile_pc_cleanup (SIM_DESC sd)
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{
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int n;
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for (n = 0; n < MAX_NR_PROCESSORS; n++)
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{
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sim_cpu *cpu = STATE_CPU (sd, n);
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PROFILE_DATA *data = CPU_PROFILE_DATA (cpu);
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if (PROFILE_PC_COUNT (data) != NULL)
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zfree (PROFILE_PC_COUNT (data));
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PROFILE_PC_COUNT (data) = NULL;
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if (PROFILE_PC_EVENT (data) != NULL)
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sim_events_deschedule (sd, PROFILE_PC_EVENT (data));
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PROFILE_PC_EVENT (data) = NULL;
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}
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}
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static void
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profile_pc_uninstall (SIM_DESC sd)
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{
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profile_pc_cleanup (sd);
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}
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static void
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profile_pc_event (SIM_DESC sd,
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void *data)
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{
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sim_cpu *cpu = (sim_cpu*) data;
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PROFILE_DATA *profile = CPU_PROFILE_DATA (cpu);
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address_word pc;
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unsigned i;
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switch (STATE_WATCHPOINTS (sd)->sizeof_pc)
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{
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case 2: pc = *(unsigned_2*)(STATE_WATCHPOINTS (sd)->pc) ; break;
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case 4: pc = *(unsigned_4*)(STATE_WATCHPOINTS (sd)->pc) ; break;
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case 8: pc = *(unsigned_8*)(STATE_WATCHPOINTS (sd)->pc) ; break;
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default: pc = 0;
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}
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i = (pc - PROFILE_PC_START (profile)) >> PROFILE_PC_SHIFT (profile);
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if (i < PROFILE_PC_NR_BUCKETS (profile))
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PROFILE_PC_COUNT (profile) [i] += 1; /* Overflow? */
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else
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PROFILE_PC_COUNT (profile) [PROFILE_PC_NR_BUCKETS (profile)] += 1;
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PROFILE_PC_EVENT (profile) =
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sim_events_schedule (sd, PROFILE_PC_FREQ (profile), profile_pc_event, cpu);
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}
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static SIM_RC
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profile_pc_init (SIM_DESC sd)
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{
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int n;
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profile_pc_cleanup (sd);
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for (n = 0; n < MAX_NR_PROCESSORS; n++)
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{
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sim_cpu *cpu = STATE_CPU (sd, n);
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PROFILE_DATA *data = CPU_PROFILE_DATA (cpu);
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if (CPU_PROFILE_FLAGS (STATE_CPU (sd, n))[PROFILE_PC_IDX]
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&& STATE_WATCHPOINTS (sd)->pc != NULL)
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{
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int bucket_size;
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/* fill in the frequency if not specified */
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if (PROFILE_PC_FREQ (data) == 0)
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PROFILE_PC_FREQ (data) = 256;
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/* fill in the start/end if not specified */
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if (PROFILE_PC_END (data) == 0)
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{
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PROFILE_PC_START (data) = STATE_TEXT_START (sd);
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PROFILE_PC_END (data) = STATE_TEXT_END (sd);
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}
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/* Compute the number of buckets if not specified. */
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if (PROFILE_PC_NR_BUCKETS (data) == 0)
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{
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if (PROFILE_PC_BUCKET_SIZE (data) == 0)
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PROFILE_PC_NR_BUCKETS (data) = 16;
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else
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{
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if (PROFILE_PC_END (data) == 0)
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{
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/* nr_buckets = (full-address-range / 2) / (bucket_size / 2) */
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PROFILE_PC_NR_BUCKETS (data) =
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((1 << (STATE_WATCHPOINTS (sd)->sizeof_pc) * (8 - 1))
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/ (PROFILE_PC_BUCKET_SIZE (data) / 2));
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}
|
||
else
|
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{
|
||
PROFILE_PC_NR_BUCKETS (data) =
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((PROFILE_PC_END (data)
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- PROFILE_PC_START (data)
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+ PROFILE_PC_BUCKET_SIZE (data) - 1)
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||
/ 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))
|
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/ (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, ": ");
|
||
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 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];
|
||
|
||
sim_io_printf (sd, "Instruction Statistics:\n\n");
|
||
|
||
/* First pass over data computes various things. */
|
||
max_val = 0;
|
||
total = 0;
|
||
max_name_len = 0;
|
||
for (i = 0; i < MAX_INSNS; ++i)
|
||
{
|
||
if (INSN_NAME (i) == 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 (INSN_NAME (i));
|
||
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 < MAX_INSNS; ++i)
|
||
{
|
||
if (INSN_NAME (i) == NULL)
|
||
continue;
|
||
if (PROFILE_INSN_COUNT (data) [i] != 0)
|
||
{
|
||
sim_io_printf (sd, " %*s: %*s: ",
|
||
max_name_len, INSN_NAME (i),
|
||
max_val < 10000 ? 5 : 10,
|
||
COMMAS (PROFILE_INSN_COUNT (data) [i]));
|
||
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 < MAX_MODES; ++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 < MAX_MODES; ++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]));
|
||
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]));
|
||
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. */
|
||
{
|
||
sim_core_maps map;
|
||
total = 0;
|
||
max_val = 0;
|
||
for (map = 0; map < nr_sim_core_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)
|
||
{
|
||
sim_core_maps map;
|
||
/* Now we can print the histogram. */
|
||
sim_io_printf (sd, "\n");
|
||
for (map = 0; map < nr_sim_core_maps; map++)
|
||
{
|
||
if (PROFILE_CORE_COUNT (data) [map] != 0)
|
||
{
|
||
sim_io_printf (sd, "%10s:", sim_core_map_to_str (map));
|
||
sim_io_printf (sd, "%*s: ",
|
||
max_val < 10000 ? 5 : 10,
|
||
COMMAS (PROFILE_CORE_COUNT (data) [map]));
|
||
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_stalls = PROFILE_MODEL_CTI_STALL_COUNT (data);
|
||
unsigned long load_stalls = PROFILE_MODEL_LOAD_STALL_COUNT (data);
|
||
unsigned long total = PROFILE_MODEL_CYCLE_COUNT (data)
|
||
+ cti_stalls + load_stalls;
|
||
char comma_buf[20];
|
||
|
||
sim_io_printf (sd, "Model %s Timing Information\n\n",
|
||
MODEL_NAME (CPU_MODEL (cpu)));
|
||
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_stalls));
|
||
sim_io_printf (sd, " %-*s %s\n",
|
||
PROFILE_LABEL_WIDTH, "Cycles stalled due to loads:",
|
||
COMMAS (load_stalls));
|
||
sim_io_printf (sd, " %-*s %s\n",
|
||
PROFILE_LABEL_WIDTH, "Total cycles (*approximate*):",
|
||
COMMAS (total));
|
||
sim_io_printf (sd, "\n");
|
||
}
|
||
|
||
#endif
|
||
|
||
|
||
#if WITH_PROFILE_INSN_P || WITH_PROFILE_MEMORY_P || WITH_PROFILE_CORE_P || WITH_PROFILE_PC_P
|
||
|
||
static void
|
||
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, "*");
|
||
}
|
||
|
||
#endif
|
||
|
||
/* 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)));
|
||
}
|
||
}
|
||
|
||
/* 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. */
|
||
/* 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);
|
||
}
|
||
|
||
#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_PC_P
|
||
sim_module_add_uninstall_fn (sd, profile_pc_uninstall);
|
||
sim_module_add_init_fn (sd, profile_pc_init);
|
||
#endif
|
||
sim_module_add_uninstall_fn (sd, profile_uninstall);
|
||
sim_module_add_info_fn (sd, profile_info);
|
||
return SIM_RC_OK;
|
||
}
|
||
|
||
static void
|
||
profile_uninstall (SIM_DESC sd)
|
||
{
|
||
int i,j;
|
||
|
||
for (i = 0; i < MAX_NR_PROCESSORS; ++i)
|
||
{
|
||
PROFILE_DATA *data = CPU_PROFILE_DATA (STATE_CPU (sd, i));
|
||
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));
|
||
}
|
||
}
|
||
}
|