sim/common/sim-profile.h

   1 /* Profile header for simulators using common framework.
   2    Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
   3    Contributed by Cygnus Support.
   4
   5 This file is part of GDB, the GNU debugger.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License along
  18 with this program; if not, write to the Free Software Foundation, Inc.,
  19 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #ifndef SIM_PROFILE_H
  22 #define SIM_PROFILE_H
  23
  24 #ifndef WITH_PROFILE
  25 Error, WITH_PROFILE not defined.
  26 #endif
  27
  28 /* Standard profilable entities.  */
  29
  30 enum {
  31   /* Profile insn usage.  */
  32   PROFILE_INSN_IDX = 1,
  33
  34   /* Profile memory usage.  */
  35   PROFILE_MEMORY_IDX,
  36
  37   /* Profile the cpu model (cycles, etc.).  */
  38   PROFILE_MODEL_IDX,
  39
  40   /* Profile the simulator's execution cache.  */
  41   PROFILE_SCACHE_IDX,
  42
  43   /* Profile the PC.  */
  44   PROFILE_PC_IDX,
  45
  46   /* Profile sim-core.c stuff.  */
  47   /* ??? The difference between this and PROFILE_MEMORY_IDX is ... ?  */
  48   PROFILE_CORE_IDX,
  49
  50   /* Simulator specific profile bits begin here.  */
  51   PROFILE_NEXT_IDX
  52 };
  53
  54 /* Maximum number of profilable entities.  */
  55 #ifndef MAX_PROFILE_VALUES
  56 #define MAX_PROFILE_VALUES 32
  57 #endif
  58
  59 /* The -p option only prints useful values.  It's easy to type and shouldn't
  60    splat on the screen everything under the sun making nothing easy to
  61    find.  */
  62 #define PROFILE_USEFUL_MASK \
  63 ((1 << PROFILE_INSN_IDX) \
  64  | (1 << PROFILE_MEMORY_IDX) \
  65  | (1 << PROFILE_MODEL_IDX) \
  66  | (1 << PROFILE_CORE_IDX))
  67
  68 /* Utility to parse a --profile-<foo> option.  */
  69 /* ??? On the one hand all calls could be confined to sim-profile.c, but
  70    on the other hand keeping a module's profiling option with the module's
  71    source is cleaner.   */
  72
  73 SIM_RC sim_profile_set_option (SIM_DESC sd_, const char *name_, int idx_,
  74                                const char *arg_);
  75 \f
  76 /* Masks so WITH_PROFILE can have symbolic values.
  77    The case choice here is on purpose.  The lowercase parts are args to
  78    --with-profile.  */
  79 #define PROFILE_insn   (1 << PROFILE_INSN_IDX)
  80 #define PROFILE_memory (1 << PROFILE_MEMORY_IDX)
  81 #define PROFILE_model  (1 << PROFILE_MODEL_IDX)
  82 #define PROFILE_scache (1 << PROFILE_SCACHE_IDX)
  83 #define PROFILE_pc     (1 << PROFILE_PC_IDX)
  84 #define PROFILE_core   (1 << PROFILE_CORE_IDX)
  85
  86 /* Preprocessor macros to simplify tests of WITH_PROFILE.  */
  87 #define WITH_PROFILE_INSN_P (WITH_PROFILE & PROFILE_insn)
  88 #define WITH_PROFILE_MEMORY_P (WITH_PROFILE & PROFILE_memory)
  89 #define WITH_PROFILE_MODEL_P (WITH_PROFILE & PROFILE_model)
  90 #define WITH_PROFILE_SCACHE_P (WITH_PROFILE & PROFILE_scache)
  91 #define WITH_PROFILE_PC_P (WITH_PROFILE & PROFILE_pc)
  92 #define WITH_PROFILE_CORE_P (WITH_PROFILE & PROFILE_core)
  93
  94 /* If MAX_TARGET_MODES isn't defined, we can't do memory profiling.
  95    ??? It is intended that this is a temporary occurence.  Normally
  96    MAX_TARGET_MODES is defined.  */
  97 #ifndef MAX_TARGET_MODES
  98 #undef WITH_PROFILE_MEMORY_P
  99 #define WITH_PROFILE_MEMORY_P 0
 100 #endif
 101
 102 /* Only build MODEL code when the target simulator has support for it */
 103 #ifndef SIM_HAVE_MODEL
 104 #undef WITH_PROFILE_MODEL_P
 105 #define WITH_PROFILE_MODEL_P 0
 106 #endif
 107
 108 /* Profiling install handler.  */
 109 MODULE_INSTALL_FN profile_install;
 110
 111 /* Output format macros.  */
 112 #ifndef PROFILE_HISTOGRAM_WIDTH
 113 #define PROFILE_HISTOGRAM_WIDTH 40
 114 #endif
 115 #ifndef PROFILE_LABEL_WIDTH
 116 #define PROFILE_LABEL_WIDTH 32
 117 #endif
 118 \f
 119 /* Callbacks for internal profile_info.
 120    The callbacks may be NULL meaning there isn't one.
 121    Note that results are indented two spaces to distinguish them from
 122    section titles.
 123    If non-NULL, PROFILE_CALLBACK is called to print extra non-cpu related data.
 124    If non-NULL, PROFILE_CPU_CALLBACK is called to print extra cpu related data.
 125    */
 126
 127 typedef void (PROFILE_INFO_CALLBACK_FN) (SIM_DESC, int);
 128 struct _sim_cpu; /* forward reference */
 129 typedef void (PROFILE_INFO_CPU_CALLBACK_FN) (struct _sim_cpu *cpu, int verbose);
 130
 131 \f
 132 /* Struct containing most profiling data.
 133    It doesn't contain all profiling data because for example scache data
 134    is kept with the rest of scache support.  */
 135
 136 typedef struct {
 137   /* Global summary of all the current profiling options.  */
 138   char profile_any_p;
 139
 140   /* Boolean array of specified profiling flags.  */
 141   char profile_flags[MAX_PROFILE_VALUES];
 142 #define PROFILE_FLAGS(p) ((p)->profile_flags)
 143
 144   /* The total insn count is tracked separately.
 145      It is always computed, regardless of insn profiling.  */
 146   unsigned long total_insn_count;
 147 #define PROFILE_TOTAL_INSN_COUNT(p) ((p)->total_insn_count)
 148
 149 #if WITH_PROFILE_INSN_P
 150   unsigned int *insn_count;
 151 #define PROFILE_INSN_COUNT(p) ((p)->insn_count)
 152 #endif
 153
 154 #if WITH_PROFILE_MEMORY_P
 155   unsigned int read_count[MAX_TARGET_MODES];
 156 #define PROFILE_READ_COUNT(p) ((p)->read_count)
 157   unsigned int write_count[MAX_TARGET_MODES];
 158 #define PROFILE_WRITE_COUNT(p) ((p)->write_count)
 159 #endif
 160
 161 #if WITH_PROFILE_CORE_P
 162   /* Count read/write/exec accesses separatly. */
 163   unsigned int core_count[nr_maps];
 164 #define PROFILE_CORE_COUNT(p) ((p)->core_count)
 165 #endif
 166
 167 #if WITH_PROFILE_MODEL_P
 168   /* ??? Quick hack until more elaborate scheme is finished.  */
 169   /* Total cycle count, including stalls.  */
 170   unsigned long total_cycles;
 171 #define PROFILE_MODEL_TOTAL_CYCLES(p) ((p)->total_cycles)
 172   /* Stalls due to branches.  */
 173   unsigned long cti_stall_cycles;
 174 #define PROFILE_MODEL_CTI_STALL_CYCLES(p) ((p)->cti_stall_cycles)
 175   unsigned long load_stall_cycles;
 176 #define PROFILE_MODEL_LOAD_STALL_CYCLES(p) ((p)->load_stall_cycles)
 177   /* Number of cycles the current instruction took.  */
 178   unsigned long cur_insn_cycles;
 179 #define PROFILE_MODEL_CUR_INSN_CYCLES(p) ((p)->cur_insn_cycles)
 180
 181   /* Taken and not-taken branches (and other cti's).  */
 182   unsigned long taken_count, untaken_count;
 183 #define PROFILE_MODEL_TAKEN_COUNT(p) ((p)->taken_count)
 184 #define PROFILE_MODEL_UNTAKEN_COUNT(p) ((p)->untaken_count)
 185 #endif
 186
 187 #if WITH_PROFILE_PC_P
 188   /* PC profiling attempts to determine function usage by sampling the PC
 189      every so many instructions.  */
 190   unsigned int profile_pc_freq;
 191 #define PROFILE_PC_FREQ(p) ((p)->profile_pc_freq)
 192   unsigned int profile_pc_nr_buckets;
 193 #define PROFILE_PC_NR_BUCKETS(p) ((p)->profile_pc_nr_buckets)
 194   address_word profile_pc_start;
 195 #define PROFILE_PC_START(p) ((p)->profile_pc_start)
 196   address_word profile_pc_end;
 197 #define PROFILE_PC_END(p) ((p)->profile_pc_end)
 198   unsigned profile_pc_shift;
 199 #define PROFILE_PC_SHIFT(p) ((p)->profile_pc_shift)
 200 #define PROFILE_PC_BUCKET_SIZE(p) (PROFILE_PC_SHIFT (p) ? (1 << PROFILE_PC_SHIFT (p)) : 0)
 201   unsigned *profile_pc_count;
 202 #define PROFILE_PC_COUNT(p) ((p)->profile_pc_count)
 203   sim_event *profile_pc_event;
 204 #define PROFILE_PC_EVENT(p) ((p)->profile_pc_event)
 205 #endif
 206
 207   /* Profile output goes to this or stderr if NULL.
 208      We can't store `stderr' here as stderr goes through a callback.  */
 209   FILE *profile_file;
 210 #define PROFILE_FILE(p) ((p)->profile_file)
 211
 212   /* When reporting a profile summary, hook to include per-processor
 213      target specific profile information */
 214   PROFILE_INFO_CPU_CALLBACK_FN *info_cpu_callback;
 215 #define PROFILE_INFO_CPU_CALLBACK(p) ((p)->info_cpu_callback)
 216
 217   /* When reporting a profile summary, hook to include common target
 218      specific profile information */
 219   PROFILE_INFO_CALLBACK_FN *info_callback;
 220 #define STATE_PROFILE_INFO_CALLBACK(sd) \
 221 (CPU_PROFILE_DATA (STATE_CPU (sd, 0))->info_callback)
 222
 223   /* Profile range.
 224      ??? Not all cpu's support this.  */
 225   ADDR_RANGE range;
 226 #define PROFILE_RANGE(p) (& (p)->range)
 227 } PROFILE_DATA;
 228 \f
 229 /* Predicates.  */
 230
 231 #define CPU_PROFILE_FLAGS(cpu) PROFILE_FLAGS (CPU_PROFILE_DATA (cpu))
 232
 233 /* Return non-zero if tracing of IDX is enabled for CPU.  */
 234 #define PROFILE_P(cpu,idx) \
 235 ((WITH_PROFILE & (1 << (idx))) != 0 \
 236  && CPU_PROFILE_FLAGS (cpu)[idx] != 0)
 237
 238 /* Non-zero if --profile-<xxxx> was specified for CPU.  */
 239 #define PROFILE_ANY_P(cpu)      ((WITH_PROFILE) && (CPU_PROFILE_DATA (cpu)->profile_any_p))
 240 #define PROFILE_INSN_P(cpu)     PROFILE_P (cpu, PROFILE_INSN_IDX)
 241 #define PROFILE_MEMORY_P(cpu)   PROFILE_P (cpu, PROFILE_MEMORY_IDX)
 242 #define PROFILE_MODEL_P(cpu)    PROFILE_P (cpu, PROFILE_MODEL_IDX)
 243 #define PROFILE_SCACHE_P(cpu)   PROFILE_P (cpu, PROFILE_SCACHE_IDX)
 244 #define PROFILE_PC_P(cpu)       PROFILE_P (cpu, PROFILE_PC_IDX)
 245 #define PROFILE_CORE_P(cpu)     PROFILE_P (cpu, PROFILE_CORE_IDX)
 246 \f
 247 /* Usage macros.  */
 248
 249 #if WITH_PROFILE_INSN_P
 250 #define PROFILE_COUNT_INSN(cpu, pc, insn_num) \
 251 do { \
 252   if (PROFILE_INSN_P (cpu)) \
 253     ++ PROFILE_INSN_COUNT (CPU_PROFILE_DATA (cpu)) [insn_num]; \
 254 } while (0)
 255 #else
 256 #define PROFILE_COUNT_INSN(cpu, pc, insn_num)
 257 #endif /* ! insn */
 258
 259 #if WITH_PROFILE_MEMORY_P
 260 #define PROFILE_COUNT_READ(cpu, addr, mode_num) \
 261 do { \
 262   if (PROFILE_MEMORY_P (cpu)) \
 263     ++ PROFILE_READ_COUNT (CPU_PROFILE_DATA (cpu)) [mode_num]; \
 264 } while (0)
 265 #define PROFILE_COUNT_WRITE(cpu, addr, mode_num) \
 266 do { \
 267   if (PROFILE_MEMORY_P (cpu)) \
 268     ++ PROFILE_WRITE_COUNT (CPU_PROFILE_DATA (cpu)) [mode_num]; \
 269 } while (0)
 270 #else
 271 #define PROFILE_COUNT_READ(cpu, addr, mode_num)
 272 #define PROFILE_COUNT_WRITE(cpu, addr, mode_num)
 273 #endif /* ! memory */
 274
 275 #if WITH_PROFILE_CORE_P
 276 #define PROFILE_COUNT_CORE(cpu, addr, size, map) \
 277 do { \
 278   if (PROFILE_CORE_P (cpu)) \
 279     PROFILE_CORE_COUNT (CPU_PROFILE_DATA (cpu)) [map] += 1; \
 280 } while (0)
 281 #else
 282 #define PROFILE_COUNT_CORE(cpu, addr, size, map)
 283 #endif /* ! core */
 284
 285 /* Misc. utilities.  */
 286
 287 extern void sim_profile_print_bar (SIM_DESC, unsigned int, unsigned int, unsigned int);
 288
 289 #endif /* SIM_PROFILE_H */