347 lines
11 KiB
C
347 lines
11 KiB
C
/* Header file for libgcov-*.c.
|
|
Copyright (C) 1996-2015 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 "tsystem.h"
|
|
#include "coretypes.h"
|
|
#include "tm.h"
|
|
#include "libgcc_tm.h"
|
|
|
|
#if BITS_PER_UNIT == 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 BITS_PER_UNIT == 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_delta 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;
|
|
};
|
|
|
|
/* 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;
|
|
|
|
/* Called before fork, to avoid double counting. */
|
|
extern void __gcov_flush (void) ATTRIBUTE_HIDDEN;
|
|
|
|
/* Function to reset all counters to 0. Both externally visible (and
|
|
overridable) and internal version. */
|
|
extern void __gcov_reset (void);
|
|
extern void __gcov_reset_int (void) ATTRIBUTE_HIDDEN;
|
|
|
|
/* User function to enable early write of profile information so far. */
|
|
extern void __gcov_dump (void);
|
|
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 to choose the most common difference between
|
|
consecutive values. */
|
|
extern void __gcov_merge_delta (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_pow2_profiler (gcov_type *, gcov_type);
|
|
extern void __gcov_one_value_profiler (gcov_type *, gcov_type);
|
|
extern void __gcov_indirect_call_profiler (gcov_type*, gcov_type,
|
|
void*, void*);
|
|
extern void __gcov_indirect_call_profiler_v2 (gcov_type, void *);
|
|
extern void __gcov_time_profiler (gcov_type *);
|
|
extern void __gcov_average_profiler (gcov_type *, gcov_type);
|
|
extern void __gcov_ior_profiler (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 */
|