[gcc.git] / libgcc / libgcov.h

/* Header file for libgcov-*.c.
   Copyright (C) 1996-2019 Free Software Foundation, Inc.

   This file is part of GCC.

   GCC 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, or (at your option) any later
   version.

   GCC 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.

   Under Section 7 of GPL version 3, you are granted additional
   permissions described in the GCC Runtime Library Exception, version
   3.1, as published by the Free Software Foundation.

   You should have received a copy of the GNU General Public License and
   a copy of the GCC Runtime Library Exception along with this program;
   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
   <http://www.gnu.org/licenses/>.  */

#ifndef GCC_LIBGCOV_H
#define GCC_LIBGCOV_H

/* work around the poisoned malloc/calloc in system.h.  */
#ifndef xmalloc
#define xmalloc malloc
#endif
#ifndef xcalloc
#define xcalloc calloc
#endif

#ifndef IN_GCOV_TOOL
/* About the target.  */
/* This path will be used by libgcov runtime.  */

#include "tconfig.h"
#include "auto-target.h"
#include "tsystem.h"
#include "coretypes.h"
#include "tm.h"
#include "libgcc_tm.h"
#include "gcov.h"

#if __CHAR_BIT__ == 8
typedef unsigned gcov_unsigned_t __attribute__ ((mode (SI)));
typedef unsigned gcov_position_t __attribute__ ((mode (SI)));
#if LONG_LONG_TYPE_SIZE > 32
typedef signed gcov_type __attribute__ ((mode (DI)));
typedef unsigned gcov_type_unsigned __attribute__ ((mode (DI)));
#else
typedef signed gcov_type __attribute__ ((mode (SI)));
typedef unsigned gcov_type_unsigned __attribute__ ((mode (SI)));
#endif
#else
#if __CHAR_BIT__ == 16
typedef unsigned gcov_unsigned_t __attribute__ ((mode (HI)));
typedef unsigned gcov_position_t __attribute__ ((mode (HI)));
#if LONG_LONG_TYPE_SIZE > 32
typedef signed gcov_type __attribute__ ((mode (SI)));
typedef unsigned gcov_type_unsigned __attribute__ ((mode (SI)));
#else
typedef signed gcov_type __attribute__ ((mode (HI)));
typedef unsigned gcov_type_unsigned __attribute__ ((mode (HI)));
#endif
#else
typedef unsigned gcov_unsigned_t __attribute__ ((mode (QI)));
typedef unsigned gcov_position_t __attribute__ ((mode (QI)));
#if LONG_LONG_TYPE_SIZE > 32
typedef signed gcov_type __attribute__ ((mode (HI)));
typedef unsigned gcov_type_unsigned __attribute__ ((mode (HI)));
#else
typedef signed gcov_type __attribute__ ((mode (QI)));
typedef unsigned gcov_type_unsigned __attribute__ ((mode (QI)));
#endif
#endif
#endif

#if defined (TARGET_POSIX_IO)
#define GCOV_LOCKED 1
#else
#define GCOV_LOCKED 0
#endif

/* In libgcov we need these functions to be extern, so prefix them with
   __gcov.  In libgcov they must also be hidden so that the instance in
   the executable is not also used in a DSO.  */
#define gcov_var __gcov_var
#define gcov_open __gcov_open
#define gcov_close __gcov_close
#define gcov_write_tag_length __gcov_write_tag_length
#define gcov_position __gcov_position
#define gcov_seek __gcov_seek
#define gcov_rewrite __gcov_rewrite
#define gcov_is_error __gcov_is_error
#define gcov_write_unsigned __gcov_write_unsigned
#define gcov_write_counter __gcov_write_counter
#define gcov_write_summary __gcov_write_summary
#define gcov_read_unsigned __gcov_read_unsigned
#define gcov_read_counter __gcov_read_counter
#define gcov_read_summary __gcov_read_summary
#define gcov_sort_n_vals __gcov_sort_n_vals

#else /* IN_GCOV_TOOL */
/* About the host.  */
/* This path will be compiled for the host and linked into
   gcov-tool binary.  */

#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"

typedef unsigned gcov_unsigned_t;
typedef unsigned gcov_position_t;
/* gcov_type is typedef'd elsewhere for the compiler */
#if defined (HOST_HAS_F_SETLKW)
#define GCOV_LOCKED 1
#else
#define GCOV_LOCKED 0
#endif

/* Some Macros specific to gcov-tool.  */

#define L_gcov 1
#define L_gcov_merge_add 1
#define L_gcov_merge_single 1
#define L_gcov_merge_ior 1
#define L_gcov_merge_time_profile 1
#define L_gcov_merge_icall_topn 1

extern gcov_type gcov_read_counter_mem ();
extern unsigned gcov_get_merge_weight ();
extern struct gcov_info *gcov_list;

#endif /* !IN_GCOV_TOOL */

#if defined(inhibit_libc)
#define IN_LIBGCOV (-1)
#else
#define IN_LIBGCOV 1
#if defined(L_gcov)
#define GCOV_LINKAGE /* nothing */
#endif
#endif

/* Poison these, so they don't accidentally slip in.  */
#pragma GCC poison gcov_write_string gcov_write_tag gcov_write_length
#pragma GCC poison gcov_time gcov_magic

#ifdef HAVE_GAS_HIDDEN
#define ATTRIBUTE_HIDDEN  __attribute__ ((__visibility__ ("hidden")))
#else
#define ATTRIBUTE_HIDDEN
#endif

#include "gcov-io.h"

/* Structures embedded in coveraged program.  The structures generated
   by write_profile must match these.  */

/* Information about counters for a single function.  */
struct gcov_ctr_info
{
  gcov_unsigned_t num;		/* number of counters.  */
  gcov_type *values;		/* their values.  */
};

/* Information about a single function.  This uses the trailing array
   idiom. The number of counters is determined from the merge pointer
   array in gcov_info.  The key is used to detect which of a set of
   comdat functions was selected -- it points to the gcov_info object
   of the object file containing the selected comdat function.  */

struct gcov_fn_info
{
  const struct gcov_info *key;		/* comdat key */
  gcov_unsigned_t ident;		/* unique ident of function */
  gcov_unsigned_t lineno_checksum;	/* function lineo_checksum */
  gcov_unsigned_t cfg_checksum;		/* function cfg checksum */
  struct gcov_ctr_info ctrs[1];		/* instrumented counters */
};

/* Type of function used to merge counters.  */
typedef void (*gcov_merge_fn) (gcov_type *, gcov_unsigned_t);

/* Information about a single object file.  */
struct gcov_info
{
  gcov_unsigned_t version;	/* expected version number */
  struct gcov_info *next;	/* link to next, used by libgcov */

  gcov_unsigned_t stamp;	/* uniquifying time stamp */
  const char *filename;		/* output file name */

  gcov_merge_fn merge[GCOV_COUNTERS];  /* merge functions (null for
					  unused) */
  
  unsigned n_functions;		/* number of functions */

#ifndef IN_GCOV_TOOL
  const struct gcov_fn_info *const *functions; /* pointer to pointers
                                                  to function information  */
#else
  const struct gcov_fn_info **functions;
#endif /* !IN_GCOV_TOOL */
};

/* Root of a program/shared-object state */
struct gcov_root
{
  struct gcov_info *list;
  unsigned dumped : 1;	/* counts have been dumped.  */
  unsigned run_counted : 1;  /* run has been accounted for.  */
  struct gcov_root *next;
  struct gcov_root *prev;
};

extern struct gcov_root __gcov_root ATTRIBUTE_HIDDEN;

struct gcov_master
{
  gcov_unsigned_t version;
  struct gcov_root *root;
};

struct indirect_call_tuple
{
  /* Callee function.  */
  void *callee;

  /* Pointer to counters.  */
  gcov_type *counters;
};
  
/* Exactly one of these will be active in the process.  */
extern struct gcov_master __gcov_master;

/* Dump a set of gcov objects.  */
extern void __gcov_dump_one (struct gcov_root *) ATTRIBUTE_HIDDEN;

/* Register a new object file module.  */
extern void __gcov_init (struct gcov_info *) ATTRIBUTE_HIDDEN;

/* GCOV exit function registered via a static destructor.  */
extern void __gcov_exit (void) ATTRIBUTE_HIDDEN;

/* Function to reset all counters to 0.  Both externally visible (and
   overridable) and internal version.  */
extern void __gcov_reset_int (void) ATTRIBUTE_HIDDEN;

/* User function to enable early write of profile information so far.  */
extern void __gcov_dump_int (void) ATTRIBUTE_HIDDEN;

/* The merge function that just sums the counters.  */
extern void __gcov_merge_add (gcov_type *, unsigned) ATTRIBUTE_HIDDEN;

/* The merge function to select the minimum valid counter value.  */
extern void __gcov_merge_time_profile (gcov_type *, unsigned) ATTRIBUTE_HIDDEN;

/* The merge function to choose the most common value.  */
extern void __gcov_merge_single (gcov_type *, unsigned) ATTRIBUTE_HIDDEN;

/* The merge function that just ors the counters together.  */
extern void __gcov_merge_ior (gcov_type *, unsigned) ATTRIBUTE_HIDDEN;

/* The merge function is used for topn indirect call counters.  */
extern void __gcov_merge_icall_topn (gcov_type *, unsigned) ATTRIBUTE_HIDDEN;

/* The profiler functions.  */
extern void __gcov_interval_profiler (gcov_type *, gcov_type, int, unsigned);
extern void __gcov_interval_profiler_atomic (gcov_type *, gcov_type, int,
					     unsigned);
extern void __gcov_pow2_profiler (gcov_type *, gcov_type);
extern void __gcov_pow2_profiler_atomic (gcov_type *, gcov_type);
extern void __gcov_one_value_profiler (gcov_type *, gcov_type);
extern void __gcov_one_value_profiler_atomic (gcov_type *, gcov_type);
extern void __gcov_indirect_call_profiler_v3 (gcov_type, void *);
extern void __gcov_time_profiler (gcov_type *);
extern void __gcov_time_profiler_atomic (gcov_type *);
extern void __gcov_average_profiler (gcov_type *, gcov_type);
extern void __gcov_average_profiler_atomic (gcov_type *, gcov_type);
extern void __gcov_ior_profiler (gcov_type *, gcov_type);
extern void __gcov_ior_profiler_atomic (gcov_type *, gcov_type);
extern void __gcov_indirect_call_topn_profiler (gcov_type, void *);
extern void gcov_sort_n_vals (gcov_type *, int);

#ifndef inhibit_libc
/* The wrappers around some library functions..  */
extern pid_t __gcov_fork (void) ATTRIBUTE_HIDDEN;
extern int __gcov_execl (const char *, char *, ...) ATTRIBUTE_HIDDEN;
extern int __gcov_execlp (const char *, char *, ...) ATTRIBUTE_HIDDEN;
extern int __gcov_execle (const char *, char *, ...) ATTRIBUTE_HIDDEN;
extern int __gcov_execv (const char *, char *const []) ATTRIBUTE_HIDDEN;
extern int __gcov_execvp (const char *, char *const []) ATTRIBUTE_HIDDEN;
extern int __gcov_execve (const char *, char  *const [], char *const [])
  ATTRIBUTE_HIDDEN;

/* Functions that only available in libgcov.  */
GCOV_LINKAGE int gcov_open (const char */*name*/) ATTRIBUTE_HIDDEN;
GCOV_LINKAGE void gcov_write_counter (gcov_type) ATTRIBUTE_HIDDEN;
GCOV_LINKAGE void gcov_write_tag_length (gcov_unsigned_t, gcov_unsigned_t)
    ATTRIBUTE_HIDDEN;
GCOV_LINKAGE void gcov_write_summary (gcov_unsigned_t /*tag*/,
                                      const struct gcov_summary *)
    ATTRIBUTE_HIDDEN;
GCOV_LINKAGE void gcov_seek (gcov_position_t /*position*/) ATTRIBUTE_HIDDEN;
GCOV_LINKAGE void gcov_rewrite (void) ATTRIBUTE_HIDDEN;

/* "Counts" stored in gcda files can be a real counter value, or
   an target address. When differentiate these two types because
   when manipulating counts, we should only change real counter values,
   rather target addresses.  */

static inline gcov_type
gcov_get_counter (void)
{
#ifndef IN_GCOV_TOOL
  /* This version is for reading count values in libgcov runtime:
     we read from gcda files.  */

  return gcov_read_counter ();
#else
  /* This version is for gcov-tool. We read the value from memory and
     multiply it by the merge weight.  */

  return gcov_read_counter_mem () * gcov_get_merge_weight ();
#endif
}

/* Similar function as gcov_get_counter(), but handles target address
   counters.  */

static inline gcov_type
gcov_get_counter_target (void)
{
#ifndef IN_GCOV_TOOL
  /* This version is for reading count target values in libgcov runtime:
     we read from gcda files.  */

  return gcov_read_counter ();
#else
  /* This version is for gcov-tool.  We read the value from memory and we do NOT
     multiply it by the merge weight.  */

  return gcov_read_counter_mem ();
#endif
}

#endif /* !inhibit_libc */

#endif /* GCC_LIBGCOV_H */
Commit	Line	Data
40d6b753	1	/* Header file for libgcov-*.c.
a5544970	2	Copyright (C) 1996-2019 Free Software Foundation, Inc.
40d6b753 RX	3
	4	This file is part of GCC.
	5
	6	GCC is free software; you can redistribute it and/or modify it under
	7	the terms of the GNU General Public License as published by the Free
	8	Software Foundation; either version 3, or (at your option) any later
	9	version.
	10
	11	GCC is distributed in the hope that it will be useful, but WITHOUT ANY
	12	WARRANTY; without even the implied warranty of MERCHANTABILITY or
	13	FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	14	for more details.
	15
	16	Under Section 7 of GPL version 3, you are granted additional
	17	permissions described in the GCC Runtime Library Exception, version
	18	3.1, as published by the Free Software Foundation.
	19
	20	You should have received a copy of the GNU General Public License and
	21	a copy of the GCC Runtime Library Exception along with this program;
	22	see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
	23	<http://www.gnu.org/licenses/>. */
	24
	25	#ifndef GCC_LIBGCOV_H
	26	#define GCC_LIBGCOV_H
	27
	28	/* work around the poisoned malloc/calloc in system.h. */
	29	#ifndef xmalloc
	30	#define xmalloc malloc
	31	#endif
	32	#ifndef xcalloc
	33	#define xcalloc calloc
	34	#endif
	35
c77556a5 RX	36	#ifndef IN_GCOV_TOOL
	37	/* About the target. */
	38	/* This path will be used by libgcov runtime. */
	39
40d6b753	40	#include "tconfig.h"
a51a76e5	41	#include "auto-target.h"
40d6b753 RX	42	#include "tsystem.h"
	43	#include "coretypes.h"
	44	#include "tm.h"
	45	#include "libgcc_tm.h"
46928a8f	46	#include "gcov.h"
40d6b753	47
a153644f	48	#if __CHAR_BIT__ == 8
40d6b753 RX	49	typedef unsigned gcov_unsigned_t __attribute__ ((mode (SI)));
	50	typedef unsigned gcov_position_t __attribute__ ((mode (SI)));
	51	#if LONG_LONG_TYPE_SIZE > 32
	52	typedef signed gcov_type __attribute__ ((mode (DI)));
	53	typedef unsigned gcov_type_unsigned __attribute__ ((mode (DI)));
	54	#else
	55	typedef signed gcov_type __attribute__ ((mode (SI)));
	56	typedef unsigned gcov_type_unsigned __attribute__ ((mode (SI)));
	57	#endif
	58	#else
a153644f	59	#if __CHAR_BIT__ == 16
40d6b753 RX	60	typedef unsigned gcov_unsigned_t __attribute__ ((mode (HI)));
	61	typedef unsigned gcov_position_t __attribute__ ((mode (HI)));
	62	#if LONG_LONG_TYPE_SIZE > 32
	63	typedef signed gcov_type __attribute__ ((mode (SI)));
	64	typedef unsigned gcov_type_unsigned __attribute__ ((mode (SI)));
	65	#else
	66	typedef signed gcov_type __attribute__ ((mode (HI)));
	67	typedef unsigned gcov_type_unsigned __attribute__ ((mode (HI)));
	68	#endif
	69	#else
	70	typedef unsigned gcov_unsigned_t __attribute__ ((mode (QI)));
	71	typedef unsigned gcov_position_t __attribute__ ((mode (QI)));
	72	#if LONG_LONG_TYPE_SIZE > 32
	73	typedef signed gcov_type __attribute__ ((mode (HI)));
	74	typedef unsigned gcov_type_unsigned __attribute__ ((mode (HI)));
	75	#else
	76	typedef signed gcov_type __attribute__ ((mode (QI)));
	77	typedef unsigned gcov_type_unsigned __attribute__ ((mode (QI)));
	78	#endif
	79	#endif
	80	#endif
	81
	82	#if defined (TARGET_POSIX_IO)
	83	#define GCOV_LOCKED 1
	84	#else
	85	#define GCOV_LOCKED 0
	86	#endif
	87
19926161 NS	88	/* In libgcov we need these functions to be extern, so prefix them with
	89	__gcov. In libgcov they must also be hidden so that the instance in
	90	the executable is not also used in a DSO. */
	91	#define gcov_var __gcov_var
	92	#define gcov_open __gcov_open
	93	#define gcov_close __gcov_close
	94	#define gcov_write_tag_length __gcov_write_tag_length
	95	#define gcov_position __gcov_position
	96	#define gcov_seek __gcov_seek
	97	#define gcov_rewrite __gcov_rewrite
	98	#define gcov_is_error __gcov_is_error
	99	#define gcov_write_unsigned __gcov_write_unsigned
	100	#define gcov_write_counter __gcov_write_counter
	101	#define gcov_write_summary __gcov_write_summary
	102	#define gcov_read_unsigned __gcov_read_unsigned
	103	#define gcov_read_counter __gcov_read_counter
	104	#define gcov_read_summary __gcov_read_summary
afe0c5ee	105	#define gcov_sort_n_vals __gcov_sort_n_vals
19926161	106
c77556a5 RX	107	#else /* IN_GCOV_TOOL */
	108	/* About the host. */
	109	/* This path will be compiled for the host and linked into
	110	gcov-tool binary. */
	111
	112	#include "config.h"
	113	#include "system.h"
	114	#include "coretypes.h"
	115	#include "tm.h"
	116
	117	typedef unsigned gcov_unsigned_t;
	118	typedef unsigned gcov_position_t;
	119	/* gcov_type is typedef'd elsewhere for the compiler */
	120	#if defined (HOST_HAS_F_SETLKW)
	121	#define GCOV_LOCKED 1
	122	#else
	123	#define GCOV_LOCKED 0
	124	#endif
	125
	126	/* Some Macros specific to gcov-tool. */
	127
	128	#define L_gcov 1
	129	#define L_gcov_merge_add 1
	130	#define L_gcov_merge_single 1
c77556a5 RX	131	#define L_gcov_merge_ior 1
c77556a5 RX	132	#define L_gcov_merge_time_profile 1
afe0c5ee	133	#define L_gcov_merge_icall_topn 1
c77556a5	134
c77556a5 RX	135	extern gcov_type gcov_read_counter_mem ();
c77556a5 RX	136	extern unsigned gcov_get_merge_weight ();
d10ee722	137	extern struct gcov_info *gcov_list;
c77556a5 RX	138
	139	#endif /* !IN_GCOV_TOOL */
	140
40d6b753 RX	141	#if defined(inhibit_libc)
	142	#define IN_LIBGCOV (-1)
	143	#else
	144	#define IN_LIBGCOV 1
	145	#if defined(L_gcov)
	146	#define GCOV_LINKAGE /* nothing */
	147	#endif
	148	#endif
	149
40d6b753 RX	150	/* Poison these, so they don't accidentally slip in. */
	151	#pragma GCC poison gcov_write_string gcov_write_tag gcov_write_length
	152	#pragma GCC poison gcov_time gcov_magic
	153
	154	#ifdef HAVE_GAS_HIDDEN
	155	#define ATTRIBUTE_HIDDEN __attribute__ ((__visibility__ ("hidden")))
	156	#else
	157	#define ATTRIBUTE_HIDDEN
	158	#endif
	159
	160	#include "gcov-io.h"
	161
	162	/* Structures embedded in coveraged program. The structures generated
	163	by write_profile must match these. */
	164
	165	/* Information about counters for a single function. */
	166	struct gcov_ctr_info
	167	{
	168	gcov_unsigned_t num; /* number of counters. */
	169	gcov_type values; / their values. */
	170	};
	171
	172	/* Information about a single function. This uses the trailing array
	173	idiom. The number of counters is determined from the merge pointer
	174	array in gcov_info. The key is used to detect which of a set of
	175	comdat functions was selected -- it points to the gcov_info object
	176	of the object file containing the selected comdat function. */
	177
	178	struct gcov_fn_info
	179	{
	180	const struct gcov_info key; / comdat key */
	181	gcov_unsigned_t ident; /* unique ident of function */
	182	gcov_unsigned_t lineno_checksum; /* function lineo_checksum */
	183	gcov_unsigned_t cfg_checksum; /* function cfg checksum */
72602c6c	184	struct gcov_ctr_info ctrs[1]; /* instrumented counters */
40d6b753 RX	185	};
	186
	187	/* Type of function used to merge counters. */
	188	typedef void (gcov_merge_fn) (gcov_type , gcov_unsigned_t);
	189
	190	/* Information about a single object file. */
	191	struct gcov_info
	192	{
	193	gcov_unsigned_t version; /* expected version number */
	194	struct gcov_info next; / link to next, used by libgcov */
	195
	196	gcov_unsigned_t stamp; /* uniquifying time stamp */
	197	const char filename; / output file name */
	198
	199	gcov_merge_fn merge[GCOV_COUNTERS]; /* merge functions (null for
	200	unused) */
	201
	202	unsigned n_functions; /* number of functions */
c77556a5 RX	203
c77556a5 RX	204	#ifndef IN_GCOV_TOOL
40d6b753	205	const struct gcov_fn_info const functions; /* pointer to pointers
c77556a5 RX	206	to function information */
	207	#else
	208	const struct gcov_fn_info **functions;
	209	#endif /* !IN_GCOV_TOOL */
40d6b753 RX	210	};
40d6b753 RX	211
4303c581 NS	212	/* Root of a program/shared-object state */
	213	struct gcov_root
	214	{
	215	struct gcov_info *list;
	216	unsigned dumped : 1; /* counts have been dumped. */
	217	unsigned run_counted : 1; /* run has been accounted for. */
cadb2b96 NS	218	struct gcov_root *next;
cadb2b96 NS	219	struct gcov_root *prev;
4303c581 NS	220	};
	221
	222	extern struct gcov_root __gcov_root ATTRIBUTE_HIDDEN;
	223
cadb2b96 NS	224	struct gcov_master
	225	{
	226	gcov_unsigned_t version;
	227	struct gcov_root *root;
	228	};
3edbcdbe ML	229
	230	struct indirect_call_tuple
	231	{
	232	/* Callee function. */
	233	void *callee;
	234
	235	/* Pointer to counters. */
	236	gcov_type *counters;
	237	};
cadb2b96 NS	238
	239	/* Exactly one of these will be active in the process. */
	240	extern struct gcov_master __gcov_master;
	241
4303c581 NS	242	/* Dump a set of gcov objects. */
	243	extern void __gcov_dump_one (struct gcov_root *) ATTRIBUTE_HIDDEN;
	244
40d6b753 RX	245	/* Register a new object file module. */
	246	extern void __gcov_init (struct gcov_info *) ATTRIBUTE_HIDDEN;
	247
8c9434c2 ML	248	/* GCOV exit function registered via a static destructor. */
	249	extern void __gcov_exit (void) ATTRIBUTE_HIDDEN;
	250
b20ee094 NS	251	/* Function to reset all counters to 0. Both externally visible (and
b20ee094 NS	252	overridable) and internal version. */
b20ee094	253	extern void __gcov_reset_int (void) ATTRIBUTE_HIDDEN;
40d6b753	254
cadb2b96	255	/* User function to enable early write of profile information so far. */
cadb2b96	256	extern void __gcov_dump_int (void) ATTRIBUTE_HIDDEN;
40d6b753 RX	257
	258	/* The merge function that just sums the counters. */
	259	extern void __gcov_merge_add (gcov_type *, unsigned) ATTRIBUTE_HIDDEN;
	260
	261	/* The merge function to select the minimum valid counter value. */
	262	extern void __gcov_merge_time_profile (gcov_type *, unsigned) ATTRIBUTE_HIDDEN;
	263
	264	/* The merge function to choose the most common value. */
	265	extern void __gcov_merge_single (gcov_type *, unsigned) ATTRIBUTE_HIDDEN;
	266
40d6b753 RX	267	/* The merge function that just ors the counters together. */
	268	extern void __gcov_merge_ior (gcov_type *, unsigned) ATTRIBUTE_HIDDEN;
	269
afe0c5ee RX	270	/* The merge function is used for topn indirect call counters. */
	271	extern void __gcov_merge_icall_topn (gcov_type *, unsigned) ATTRIBUTE_HIDDEN;
	272
40d6b753 RX	273	/* The profiler functions. */
40d6b753 RX	274	extern void __gcov_interval_profiler (gcov_type *, gcov_type, int, unsigned);
a266236e ML	275	extern void __gcov_interval_profiler_atomic (gcov_type *, gcov_type, int,
a266236e ML	276	unsigned);
40d6b753	277	extern void __gcov_pow2_profiler (gcov_type *, gcov_type);
a266236e	278	extern void __gcov_pow2_profiler_atomic (gcov_type *, gcov_type);
40d6b753	279	extern void __gcov_one_value_profiler (gcov_type *, gcov_type);
a266236e	280	extern void __gcov_one_value_profiler_atomic (gcov_type *, gcov_type);
756721ba	281	extern void __gcov_indirect_call_profiler_v3 (gcov_type, void *);
40d6b753	282	extern void __gcov_time_profiler (gcov_type *);
a266236e	283	extern void __gcov_time_profiler_atomic (gcov_type *);
40d6b753	284	extern void __gcov_average_profiler (gcov_type *, gcov_type);
a266236e	285	extern void __gcov_average_profiler_atomic (gcov_type *, gcov_type);
40d6b753	286	extern void __gcov_ior_profiler (gcov_type *, gcov_type);
a266236e	287	extern void __gcov_ior_profiler_atomic (gcov_type *, gcov_type);
afe0c5ee RX	288	extern void __gcov_indirect_call_topn_profiler (gcov_type, void *);
afe0c5ee RX	289	extern void gcov_sort_n_vals (gcov_type *, int);
40d6b753 RX	290
	291	#ifndef inhibit_libc
	292	/* The wrappers around some library functions.. */
	293	extern pid_t __gcov_fork (void) ATTRIBUTE_HIDDEN;
	294	extern int __gcov_execl (const char , char , ...) ATTRIBUTE_HIDDEN;
	295	extern int __gcov_execlp (const char , char , ...) ATTRIBUTE_HIDDEN;
	296	extern int __gcov_execle (const char , char , ...) ATTRIBUTE_HIDDEN;
	297	extern int __gcov_execv (const char , char const []) ATTRIBUTE_HIDDEN;
	298	extern int __gcov_execvp (const char , char const []) ATTRIBUTE_HIDDEN;
	299	extern int __gcov_execve (const char , char const [], char *const [])
	300	ATTRIBUTE_HIDDEN;
	301
	302	/* Functions that only available in libgcov. */
	303	GCOV_LINKAGE int gcov_open (const char /name*/) ATTRIBUTE_HIDDEN;
	304	GCOV_LINKAGE void gcov_write_counter (gcov_type) ATTRIBUTE_HIDDEN;
	305	GCOV_LINKAGE void gcov_write_tag_length (gcov_unsigned_t, gcov_unsigned_t)
	306	ATTRIBUTE_HIDDEN;
	307	GCOV_LINKAGE void gcov_write_summary (gcov_unsigned_t /tag/,
	308	const struct gcov_summary *)
	309	ATTRIBUTE_HIDDEN;
	310	GCOV_LINKAGE void gcov_seek (gcov_position_t /position/) ATTRIBUTE_HIDDEN;
19926161	311	GCOV_LINKAGE void gcov_rewrite (void) ATTRIBUTE_HIDDEN;
40d6b753	312
c77556a5 RX	313	/* "Counts" stored in gcda files can be a real counter value, or
	314	an target address. When differentiate these two types because
	315	when manipulating counts, we should only change real counter values,
	316	rather target addresses. */
	317
	318	static inline gcov_type
	319	gcov_get_counter (void)
	320	{
	321	#ifndef IN_GCOV_TOOL
	322	/* This version is for reading count values in libgcov runtime:
	323	we read from gcda files. */
	324
	325	return gcov_read_counter ();
	326	#else
	327	/* This version is for gcov-tool. We read the value from memory and
	328	multiply it by the merge weight. */
	329
	330	return gcov_read_counter_mem () * gcov_get_merge_weight ();
	331	#endif
	332	}
	333
	334	/* Similar function as gcov_get_counter(), but handles target address
	335	counters. */
	336
	337	static inline gcov_type
	338	gcov_get_counter_target (void)
	339	{
	340	#ifndef IN_GCOV_TOOL
	341	/* This version is for reading count target values in libgcov runtime:
	342	we read from gcda files. */
	343
	344	return gcov_read_counter ();
	345	#else
	346	/* This version is for gcov-tool. We read the value from memory and we do NOT
	347	multiply it by the merge weight. */
	348
	349	return gcov_read_counter_mem ();
	350	#endif
	351	}
	352
40d6b753 RX	353	#endif /* !inhibit_libc */
	354
	355	#endif /* GCC_LIBGCOV_H */