/* Profile header for simulators using common framework.
   Copyright (C) 1996-2017 Free Software Foundation, Inc.
   Contributed by Cygnus Support.

This file is part of GDB, the GNU debugger.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#ifndef SIM_PROFILE_H
#define SIM_PROFILE_H

#ifndef WITH_PROFILE
Error, WITH_PROFILE not defined.
#endif

/* Standard profilable entities.  */

enum {
  /* Profile insn usage.  */
  PROFILE_INSN_IDX = 1,

  /* Profile memory usage.  */
  PROFILE_MEMORY_IDX,

  /* Profile the cpu model (cycles, etc.).  */
  PROFILE_MODEL_IDX,

  /* Profile the simulator's execution cache.  */
  PROFILE_SCACHE_IDX,

  /* Profile the PC.  */
  PROFILE_PC_IDX,

  /* Profile sim-core.c stuff.  */
  /* ??? The difference between this and PROFILE_MEMORY_IDX is ... ?  */
  PROFILE_CORE_IDX,

  /* Simulator specific profile bits begin here.  */
  PROFILE_NEXT_IDX
};

/* Maximum number of profilable entities.  */
#ifndef MAX_PROFILE_VALUES
#define MAX_PROFILE_VALUES 32
#endif

/* The -p option only prints useful values.  It's easy to type and shouldn't
   splat on the screen everything under the sun making nothing easy to
   find.  */
#define PROFILE_USEFUL_MASK \
((1 << PROFILE_INSN_IDX) \
 | (1 << PROFILE_MEMORY_IDX) \
 | (1 << PROFILE_MODEL_IDX) \
 | (1 << PROFILE_CORE_IDX))

/* Utility to set profile options.  */
SIM_RC set_profile_option_mask (SIM_DESC sd_, const char *name_, int mask_,
				const char *arg_);

/* Utility to parse a --profile-<foo> option.  */
/* ??? On the one hand all calls could be confined to sim-profile.c, but
   on the other hand keeping a module's profiling option with the module's
   source is cleaner.   */

SIM_RC sim_profile_set_option (SIM_DESC sd_, const char *name_, int idx_,
			       const char *arg_);

/* Masks so WITH_PROFILE can have symbolic values.
   The case choice here is on purpose.  The lowercase parts are args to
   --with-profile.  */
#define PROFILE_insn   (1 << PROFILE_INSN_IDX)
#define PROFILE_memory (1 << PROFILE_MEMORY_IDX)
#define PROFILE_model  (1 << PROFILE_MODEL_IDX)
#define PROFILE_scache (1 << PROFILE_SCACHE_IDX)
#define PROFILE_pc     (1 << PROFILE_PC_IDX)
#define PROFILE_core   (1 << PROFILE_CORE_IDX)

/* Preprocessor macros to simplify tests of WITH_PROFILE.  */
#define WITH_PROFILE_INSN_P (WITH_PROFILE & PROFILE_insn)
#define WITH_PROFILE_MEMORY_P (WITH_PROFILE & PROFILE_memory)
#define WITH_PROFILE_MODEL_P (WITH_PROFILE & PROFILE_model)
#define WITH_PROFILE_SCACHE_P (WITH_PROFILE & PROFILE_scache)
#define WITH_PROFILE_PC_P (WITH_PROFILE & PROFILE_pc)
#define WITH_PROFILE_CORE_P (WITH_PROFILE & PROFILE_core)

/* If MAX_TARGET_MODES isn't defined, we can't do memory profiling.
   ??? It is intended that this is a temporary occurrence.  Normally
   MAX_TARGET_MODES is defined.  */
#ifndef MAX_TARGET_MODES
#undef WITH_PROFILE_MEMORY_P
#define WITH_PROFILE_MEMORY_P 0
#endif

/* Profiling install handler.  */
MODULE_INSTALL_FN profile_install;

/* Output format macros.  */
#ifndef PROFILE_HISTOGRAM_WIDTH
#define PROFILE_HISTOGRAM_WIDTH 40
#endif
#ifndef PROFILE_LABEL_WIDTH
#define PROFILE_LABEL_WIDTH 32
#endif

/* Callbacks for internal profile_info.
   The callbacks may be NULL meaning there isn't one.
   Note that results are indented two spaces to distinguish them from
   section titles.
   If non-NULL, PROFILE_CALLBACK is called to print extra non-cpu related data.
   If non-NULL, PROFILE_CPU_CALLBACK is called to print extra cpu related data.
   */

typedef void (PROFILE_INFO_CALLBACK_FN) (SIM_DESC, int);
struct _sim_cpu; /* forward reference */
typedef void (PROFILE_INFO_CPU_CALLBACK_FN) (struct _sim_cpu *cpu, int verbose);


/* Struct containing most profiling data.
   It doesn't contain all profiling data because for example scache data
   is kept with the rest of scache support.  */

typedef struct {
  /* Global summary of all the current profiling options.  */
  char profile_any_p;

  /* Boolean array of specified profiling flags.  */
  char profile_flags[MAX_PROFILE_VALUES];
#define PROFILE_FLAGS(p) ((p)->profile_flags)

  /* The total insn count is tracked separately.
     It is always computed, regardless of insn profiling.  */
  unsigned long total_insn_count;
#define PROFILE_TOTAL_INSN_COUNT(p) ((p)->total_insn_count)

  /* CPU frequency.  Always accepted, regardless of profiling options.  */
  unsigned long cpu_freq;
#define PROFILE_CPU_FREQ(p) ((p)->cpu_freq)

#if WITH_PROFILE_INSN_P
  unsigned int *insn_count;
#define PROFILE_INSN_COUNT(p) ((p)->insn_count)
#endif

#if WITH_PROFILE_MEMORY_P
  unsigned int read_count[MAX_TARGET_MODES];
#define PROFILE_READ_COUNT(p) ((p)->read_count)
  unsigned int write_count[MAX_TARGET_MODES];
#define PROFILE_WRITE_COUNT(p) ((p)->write_count)
#endif

#if WITH_PROFILE_CORE_P
  /* Count read/write/exec accesses separatly. */
  unsigned int core_count[nr_maps];
#define PROFILE_CORE_COUNT(p) ((p)->core_count)
#endif

#if WITH_PROFILE_MODEL_P
  /* ??? Quick hack until more elaborate scheme is finished.  */
  /* Total cycle count, including stalls.  */
  unsigned long total_cycles;
#define PROFILE_MODEL_TOTAL_CYCLES(p) ((p)->total_cycles)
  /* Stalls due to branches.  */
  unsigned long cti_stall_cycles;
#define PROFILE_MODEL_CTI_STALL_CYCLES(p) ((p)->cti_stall_cycles)
  unsigned long load_stall_cycles;
#define PROFILE_MODEL_LOAD_STALL_CYCLES(p) ((p)->load_stall_cycles)
  /* Number of cycles the current instruction took.  */
  unsigned long cur_insn_cycles;
#define PROFILE_MODEL_CUR_INSN_CYCLES(p) ((p)->cur_insn_cycles)

  /* Taken and not-taken branches (and other cti's).  */
  unsigned long taken_count, untaken_count;
#define PROFILE_MODEL_TAKEN_COUNT(p) ((p)->taken_count)
#define PROFILE_MODEL_UNTAKEN_COUNT(p) ((p)->untaken_count)
#endif

#if WITH_PROFILE_PC_P
  /* PC profiling attempts to determine function usage by sampling the PC
     every so many instructions.  */
  unsigned int profile_pc_freq;
#define PROFILE_PC_FREQ(p) ((p)->profile_pc_freq)
  unsigned int profile_pc_nr_buckets;
#define PROFILE_PC_NR_BUCKETS(p) ((p)->profile_pc_nr_buckets)
  address_word profile_pc_start;
#define PROFILE_PC_START(p) ((p)->profile_pc_start)
  address_word profile_pc_end;
#define PROFILE_PC_END(p) ((p)->profile_pc_end)
  unsigned profile_pc_shift;
#define PROFILE_PC_SHIFT(p) ((p)->profile_pc_shift)
#define PROFILE_PC_BUCKET_SIZE(p) (PROFILE_PC_SHIFT (p) ? (1 << PROFILE_PC_SHIFT (p)) : 0)
  unsigned *profile_pc_count;
#define PROFILE_PC_COUNT(p) ((p)->profile_pc_count)
  sim_event *profile_pc_event;
#define PROFILE_PC_EVENT(p) ((p)->profile_pc_event)
#endif

  /* Profile output goes to this or stderr if NULL.
     We can't store `stderr' here as stderr goes through a callback.  */
  FILE *profile_file;
#define PROFILE_FILE(p) ((p)->profile_file)

  /* When reporting a profile summary, hook to include per-processor
     target specific profile information */
  PROFILE_INFO_CPU_CALLBACK_FN *info_cpu_callback;
#define PROFILE_INFO_CPU_CALLBACK(p) ((p)->info_cpu_callback)

  /* When reporting a profile summary, hook to include common target
     specific profile information */
  PROFILE_INFO_CALLBACK_FN *info_callback;
#define STATE_PROFILE_INFO_CALLBACK(sd) \
(CPU_PROFILE_DATA (STATE_CPU (sd, 0))->info_callback)

  /* Profile range.
     ??? Not all cpu's support this.  */
  ADDR_RANGE range;
#define PROFILE_RANGE(p) (& (p)->range)
} PROFILE_DATA;

/* Predicates.  */

#define CPU_PROFILE_FLAGS(cpu) PROFILE_FLAGS (CPU_PROFILE_DATA (cpu))

/* Return non-zero if tracing of IDX is enabled for CPU.  */
#define PROFILE_P(cpu,idx) \
((WITH_PROFILE & (1 << (idx))) != 0 \
 && CPU_PROFILE_FLAGS (cpu)[idx] != 0)

/* Non-zero if --profile-<xxxx> was specified for CPU.  */
#define PROFILE_ANY_P(cpu)	((WITH_PROFILE) && (CPU_PROFILE_DATA (cpu)->profile_any_p))
#define PROFILE_INSN_P(cpu)	PROFILE_P (cpu, PROFILE_INSN_IDX)
#define PROFILE_MEMORY_P(cpu)	PROFILE_P (cpu, PROFILE_MEMORY_IDX)
#define PROFILE_MODEL_P(cpu)	PROFILE_P (cpu, PROFILE_MODEL_IDX)
#define PROFILE_SCACHE_P(cpu)	PROFILE_P (cpu, PROFILE_SCACHE_IDX)
#define PROFILE_PC_P(cpu)	PROFILE_P (cpu, PROFILE_PC_IDX)
#define PROFILE_CORE_P(cpu)	PROFILE_P (cpu, PROFILE_CORE_IDX)

/* Usage macros.  */

#if WITH_PROFILE_INSN_P
#define PROFILE_COUNT_INSN(cpu, pc, insn_num) \
do { \
  if (PROFILE_INSN_P (cpu)) \
    ++ PROFILE_INSN_COUNT (CPU_PROFILE_DATA (cpu)) [insn_num]; \
} while (0)
#else
#define PROFILE_COUNT_INSN(cpu, pc, insn_num)
#endif /* ! insn */

#if WITH_PROFILE_MEMORY_P
#define PROFILE_COUNT_READ(cpu, addr, mode_num) \
do { \
  if (PROFILE_MEMORY_P (cpu)) \
    ++ PROFILE_READ_COUNT (CPU_PROFILE_DATA (cpu)) [mode_num]; \
} while (0)
#define PROFILE_COUNT_WRITE(cpu, addr, mode_num) \
do { \
  if (PROFILE_MEMORY_P (cpu)) \
    ++ PROFILE_WRITE_COUNT (CPU_PROFILE_DATA (cpu)) [mode_num]; \
} while (0)
#else
#define PROFILE_COUNT_READ(cpu, addr, mode_num)
#define PROFILE_COUNT_WRITE(cpu, addr, mode_num)
#endif /* ! memory */

#if WITH_PROFILE_CORE_P
#define PROFILE_COUNT_CORE(cpu, addr, size, map) \
do { \
  if (PROFILE_CORE_P (cpu)) \
    PROFILE_CORE_COUNT (CPU_PROFILE_DATA (cpu)) [map] += 1; \
} while (0)
#else
#define PROFILE_COUNT_CORE(cpu, addr, size, map)
#endif /* ! core */

#if WITH_PROFILE_MODEL_P
#define PROFILE_BRANCH_TAKEN(cpu) \
do { \
  if (PROFILE_MODEL_P (cpu)) \
    ++ PROFILE_MODEL_TAKEN_COUNT (CPU_PROFILE_DATA (cpu)); \
} while (0)
#define PROFILE_BRANCH_UNTAKEN(cpu) \
do { \
  if (PROFILE_MODEL_P (cpu)) \
    ++ PROFILE_MODEL_UNTAKEN_COUNT (CPU_PROFILE_DATA (cpu)); \
} while (0)
#else
#define PROFILE_BRANCH_TAKEN(cpu)
#define PROFILE_BRANCH_UNTAKEN(cpu)
#endif /* ! model */

/* Misc. utilities.  */

extern void sim_profile_print_bar (SIM_DESC, sim_cpu *, unsigned int, unsigned int, unsigned int);

#endif /* SIM_PROFILE_H */
