/* File format for coverage information
- Copyright (C) 1996, 1997, 1998, 2000, 2002,
- 2003 Free Software Foundation, Inc.
+ Copyright (C) 1996-2024 Free Software Foundation, Inc.
Contributed by Bob Manson <manson@cygnus.com>.
Completely remangled by Nathan Sidwell <nathan@codesourcery.com>.
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 2, or (at your option) any later
+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
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 GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
-
-/* As a special exception, if you link this library with other files,
- some of which are compiled with GCC, to produce an executable,
- this library does not by itself cause the resulting executable
- to be covered by the GNU General Public License.
- This exception does not however invalidate any other reasons why
- the executable file might be covered by the GNU General Public License. */
-
-/* Coverage information is held in two files. A notes file, which is
- generated by the compiler, and a data file, which is generated
- by the program under test. Both files use a similar structure. We
- do not attempt to make these files backwards compatible with
- previous versions, as you only need coverage information when
- developing a program. We do hold version information, so that
- mismatches can be detected, and we use a format that allows tools
- to skip information they do not understand or are not interested
- in.
+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/>. */
+
+
+/* CAVEAT: Coverage information files should not be parsed directly,
+ instead use `gcov --json-format`, which provides
+ machine-readable coverage information.
+
+ Note that the following file format documentation might be outdated.
+
+ Coverage information is held in two files. A notes file, which is
+ generated by the compiler, and a data file, which is generated by
+ the program under test. Both files use a similar structure. We do
+ not attempt to make these files backwards compatible with previous
+ versions, as you only need coverage information when developing a
+ program. We do hold version information, so that mismatches can be
+ detected, and we use a format that allows tools to skip information
+ they do not understand or are not interested in.
Numbers are recorded in the 32 bit unsigned binary form of the
endianness of the machine generating the file. 64 bit numbers are
- stored as two 32 bit numbers, the low part first. Strings are
- padded with 1 to 4 NUL bytes, to bring the length up to a multiple
- of 4. The number of 4 bytes is stored, followed by the padded
- string. Zero length and NULL strings are simply stored as
- a length of zero (they have no trailing NUL or padding).
+ stored as two 32 bit numbers, the low part first.
+ The number of bytes is stored, followed by the
+ string. Zero length and NULL strings are simply stored as a length
+ of zero (they have no trailing NUL).
int32: byte3 byte2 byte1 byte0 | byte0 byte1 byte2 byte3
int64: int32:low int32:high
- string: int32:0 | int32:length char* char:0 padding
- padding: | char:0 | char:0 char:0 | char:0 char:0 char:0
+ string: int32:0 | int32:length char* char:0
item: int32 | int64 | string
- The basic format of the files is
+ The basic format of the notes file is
+
+ file : int32:magic int32:version int32:stamp int32:support_unexecuted_blocks record*
+
+ The basic format of the data file is
file : int32:magic int32:version int32:stamp record*
- The magic ident is different for the notes and the data files. The
- magic ident is used to determine the endianness of the file, when
- reading. The version is the same for both files and is derived
- from gcc's version number. The stamp value is used to synchronize
- note and data files and to synchronize merging within a data
- file. It need not be an absolute time stamp, merely a ticker that
- increments fast enough and cycles slow enough to distinguish
- different compile/run/compile cycles.
-
+ A filename header may be used to provide a filename for the data in
+ a stream of data to support gcov in freestanding environments. This
+ header is used by the merge-stream subcommand of the gcov-tool. The
+ format of the filename header is
+
+ filename-header : int32:magic int32:version string
+
+ The magic ident is different for the notes and the data files as
+ well as the filename header. The magic ident is used to determine
+ the endianness of the file, when reading. The version is the same
+ for both files and is derived from gcc's version number. The stamp
+ value is used to synchronize note and data files and to synchronize
+ merging within a data file. It need not be an absolute time stamp,
+ merely a ticker that increments fast enough and cycles slow enough
+ to distinguish different compile/run/compile cycles.
+
Although the ident and version are formally 32 bit numbers, they
are derived from 4 character ASCII strings. The version number
- consists of the single character major version number, a two
- character minor version number (leading zero for versions less than
- 10), and a single character indicating the status of the release.
+ consists of a two character major version number
+ (first digit starts from 'A' letter to not to clash with the older
+ numbering scheme), the single character minor version number,
+ and a single character indicating the status of the release.
That will be 'e' experimental, 'p' prerelease and 'r' for release.
Because, by good fortune, these are in alphabetical order, string
collating can be used to compare version strings. Be aware that
the 'e' designation will (naturally) be unstable and might be
- incompatible with itself. For gcc 3.4 experimental, it would be
- '304e' (0x33303465). When the major version reaches 10, the
- letters A-Z will be used. Assuming minor increments releases every
- 6 months, we have to make a major increment every 50 years.
- Assuming major increments releases every 5 years, we're ok for the
- next 155 years -- good enough for me.
+ incompatible with itself. For gcc 17.0 experimental, it would be
+ 'B70e' (0x42373065). As we currently do not release more than 5 minor
+ releases, the single character should be always fine. Major number
+ is currently changed roughly every year, which gives us space
+ for next 250 years (maximum allowed number would be 259.9).
A record has a tag, length and variable amount of data.
Records are not nested, but there is a record hierarchy. Tag
numbers reflect this hierarchy. Tags are unique across note and
data files. Some record types have a varying amount of data. The
- LENGTH is the number of 4bytes that follow and is usually used to
+ LENGTH is the number of bytes that follow and is usually used to
determine how much data. The tag value is split into 4 8-bit
fields, one for each of four possible levels. The most significant
is allocated first. Unused levels are zero. Active levels are
tags, values [41..9f] for the notes file and [a1..ff] for the data
file.
- The basic block graph file contains the following records
+ The notes file contains the following records
note: unit function-graph*
unit: header int32:checksum string:source
function-graph: announce_function basic_blocks {arcs | lines}*
- announce_function: header int32:ident int32:checksum
- string:name string:source int32:lineno
+ announce_function: header int32:ident
+ int32:lineno_checksum int32:cfg_checksum
+ string:name string:source int32:start_lineno int32:start_column int32:end_lineno
basic_block: header int32:flags*
arcs: header int32:block_no arc*
arc: int32:dest_block int32:flags
blocks they are for.
The data file contains the following records.
- data: {unit function-data* summary:object summary:program*}*
+ data: {unit summary:object function-data*}*
unit: header int32:checksum
- function-data: announce_function arc_counts
- announce_function: header int32:ident int32:checksum
- arc_counts: header int64:count*
- summary: int32:checksum {count-summary}GCOV_COUNTERS
- count-summary: int32:num int32:runs int64:sum
- int64:max int64:sum_max
+ function-data: announce_function present counts
+ announce_function: header int32:ident
+ int32:lineno_checksum int32:cfg_checksum
+ present: header int32:present
+ counts: header int64:count*
+ summary: int32:checksum int32:runs int32:sum_max
The ANNOUNCE_FUNCTION record is the same as that in the note file,
- but without the source location. The ARC_COUNTS gives the counter
- values for those arcs that are instrumented. The SUMMARY records
- give information about the whole object file and about the whole
+ but without the source location. The COUNTS gives the
+ counter values for instrumented features. The about the whole
program. The checksum is used for whole program summaries, and
disambiguates different programs which include the same
instrumented object file. There may be several program summaries,
- each with a unique checksum. The object summary's checksum is zero.
- Note that the data file might contain information from several runs
- concatenated, or the data might be merged.
+ each with a unique checksum. The object summary's checksum is
+ zero. Note that the data file might contain information from
+ several runs concatenated, or the data might be merged.
This file is included by both the compiler, gcov tools and the
runtime support library libgcov. IN_LIBGCOV and IN_GCOV are used to
#ifndef GCC_GCOV_IO_H
#define GCC_GCOV_IO_H
-#if IN_LIBGCOV
-/* About the target */
-
-#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)));
-#else
-typedef signed gcov_type __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)));
-#else
-typedef signed gcov_type __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)));
-#else
-typedef signed gcov_type __attribute__ ((mode (QI)));
-#endif
-#endif
-#endif
+/* GCOV key-value pair linked list type. */
+struct gcov_kvp;
-#if defined (TARGET_HAS_F_SETLKW)
-#define GCOV_LOCKED 1
-#else
-#define GCOV_LOCKED 0
-#endif
+struct gcov_kvp
+{
+ gcov_type value;
+ gcov_type count;
+ struct gcov_kvp *next;
+};
-#else /* !IN_LIBGCOV */
+#ifndef IN_LIBGCOV
/* About the host */
typedef unsigned gcov_unsigned_t;
/* gcov_type is typedef'd elsewhere for the compiler */
#if IN_GCOV
#define GCOV_LINKAGE static
-typedef HOST_WIDEST_INT gcov_type;
+typedef int64_t gcov_type;
+typedef uint64_t gcov_type_unsigned;
#if IN_GCOV > 0
#include <sys/types.h>
#endif
-#else /*!IN_GCOV */
-#if LONG_LONG_TYPE_SIZE > 32
-#define GCOV_TYPE_NODE intDI_type_node
-#else
-#define GCOV_TYPE_NODE intSI_type_node
-#endif
#endif
#if defined (HOST_HAS_F_SETLKW)
#define GCOV_LOCKED 0
#endif
-#endif /* !IN_LIBGCOV */
+#if defined (HOST_HAS_LK_LOCK)
+#define GCOV_LOCKED_WITH_LOCKING 1
+#else
+#define GCOV_LOCKED_WITH_LOCKING 0
+#endif
-/* In gcov we want function linkage to be static. In libgcov we need
- these functions to be extern, so prefix them with __gcov. In the
- compiler we want it extern, so that they can be accessed from
- elsewhere. */
-#if IN_LIBGCOV
-#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_is_eof __gcov_is_eof
-#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
-
-/* 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_read_string gcov_sync gcov_time gcov_magic
+#define ATTRIBUTE_HIDDEN
-#endif
+#endif /* !IN_LIBGCOV */
#ifndef GCOV_LINKAGE
#define GCOV_LINKAGE extern
#endif
+#if IN_LIBGCOV
+#define gcov_nonruntime_assert(EXPR) ((void)(0 && (EXPR)))
+#else
+#define gcov_nonruntime_assert(EXPR) gcc_assert (EXPR)
+#define gcov_error(...) fatal_error (input_location, __VA_ARGS__)
+#endif
+
/* File suffixes. */
#define GCOV_DATA_SUFFIX ".gcda"
#define GCOV_NOTE_SUFFIX ".gcno"
/* File magic. Must not be palindromes. */
#define GCOV_DATA_MAGIC ((gcov_unsigned_t)0x67636461) /* "gcda" */
#define GCOV_NOTE_MAGIC ((gcov_unsigned_t)0x67636e6f) /* "gcno" */
+#define GCOV_FILENAME_MAGIC ((gcov_unsigned_t)0x6763666e) /* "gcfn" */
-/* gcov-iov.h is automatically generated by the makefile from
- version.c, it looks like
- #define GCOV_VERSION ((gcov_unsigned_t)0x89abcdef)
-*/
-#include "gcov-iov.h"
+#include "version.h"
/* Convert a magic or version number to a 4 character string. */
#define GCOV_UNSIGNED2STRING(ARRAY,VALUE) \
/* The record tags. Values [1..3f] are for tags which may be in either
file. Values [41..9f] for those in the note file and [a1..ff] for
- the data file. */
+ the data file. The tag value zero is used as an explicit end of
+ file marker -- it is not required to be present.
+ All length values are in bytes. */
+
+#define GCOV_WORD_SIZE 4
#define GCOV_TAG_FUNCTION ((gcov_unsigned_t)0x01000000)
-#define GCOV_TAG_FUNCTION_LENGTH (2)
+#define GCOV_TAG_FUNCTION_LENGTH (3 * GCOV_WORD_SIZE)
#define GCOV_TAG_BLOCKS ((gcov_unsigned_t)0x01410000)
#define GCOV_TAG_BLOCKS_LENGTH(NUM) (NUM)
-#define GCOV_TAG_BLOCKS_NUM(LENGTH) (LENGTH)
#define GCOV_TAG_ARCS ((gcov_unsigned_t)0x01430000)
-#define GCOV_TAG_ARCS_LENGTH(NUM) (1 + (NUM) * 2)
-#define GCOV_TAG_ARCS_NUM(LENGTH) (((LENGTH) - 1) / 2)
+#define GCOV_TAG_ARCS_LENGTH(NUM) (1 + (NUM) * 2 * GCOV_WORD_SIZE)
+#define GCOV_TAG_ARCS_NUM(LENGTH) (((LENGTH / GCOV_WORD_SIZE) - 1) / 2)
#define GCOV_TAG_LINES ((gcov_unsigned_t)0x01450000)
#define GCOV_TAG_COUNTER_BASE ((gcov_unsigned_t)0x01a10000)
-#define GCOV_TAG_COUNTER_LENGTH(NUM) ((NUM) * 2)
-#define GCOV_TAG_COUNTER_NUM(LENGTH) ((LENGTH) / 2)
+#define GCOV_TAG_COUNTER_LENGTH(NUM) ((NUM) * 2 * GCOV_WORD_SIZE)
+#define GCOV_TAG_COUNTER_NUM(LENGTH) ((LENGTH / GCOV_WORD_SIZE) / 2)
#define GCOV_TAG_OBJECT_SUMMARY ((gcov_unsigned_t)0xa1000000)
-#define GCOV_TAG_PROGRAM_SUMMARY ((gcov_unsigned_t)0xa3000000)
-#define GCOV_TAG_SUMMARY_LENGTH \
- (1 + GCOV_COUNTERS_SUMMABLE * (2 + 3 * 2))
+#define GCOV_TAG_OBJECT_SUMMARY_LENGTH (2 * GCOV_WORD_SIZE)
+#define GCOV_TAG_PROGRAM_SUMMARY ((gcov_unsigned_t)0xa3000000) /* Obsolete */
+#define GCOV_TAG_AFDO_FILE_NAMES ((gcov_unsigned_t)0xaa000000)
+#define GCOV_TAG_AFDO_FUNCTION ((gcov_unsigned_t)0xac000000)
+#define GCOV_TAG_AFDO_WORKING_SET ((gcov_unsigned_t)0xaf000000)
+
/* Counters that are collected. */
-#define GCOV_COUNTER_ARCS 0 /* Arc transitions. */
-#define GCOV_COUNTERS_SUMMABLE 1 /* Counters which can be
- summaried. */
-#define GCOV_FIRST_VALUE_COUNTER 1 /* The first of counters used for value
- profiling. They must form a consecutive
- interval and their order must match
- the order of HIST_TYPEs in
- value-prof.h. */
-#define GCOV_COUNTER_V_INTERVAL 1 /* Histogram of value inside an interval. */
-#define GCOV_COUNTER_V_POW2 2 /* Histogram of exact power2 logarithm
- of a value. */
-#define GCOV_COUNTER_V_SINGLE 3 /* The most common value of expression. */
-#define GCOV_COUNTER_V_DELTA 4 /* The most common difference between
- consecutive values of expression. */
-#define GCOV_LAST_VALUE_COUNTER 4 /* The last of counters used for value
- profiling. */
-#define GCOV_COUNTERS 5
+
+#define DEF_GCOV_COUNTER(COUNTER, NAME, MERGE_FN) COUNTER,
+enum {
+#include "gcov-counter.def"
+GCOV_COUNTERS
+};
+#undef DEF_GCOV_COUNTER
+
+/* The first of counters used for value profiling. They must form a
+ consecutive interval and their order must match the order of
+ HIST_TYPEs in value-prof.h. */
+#define GCOV_FIRST_VALUE_COUNTER GCOV_COUNTER_V_INTERVAL
+
+/* The last of counters used for value profiling. */
+#define GCOV_LAST_VALUE_COUNTER (GCOV_COUNTERS - 1)
/* Number of counters used for value profiling. */
#define GCOV_N_VALUE_COUNTERS \
(GCOV_LAST_VALUE_COUNTER - GCOV_FIRST_VALUE_COUNTER + 1)
-
- /* A list of human readable names of the counters */
-#define GCOV_COUNTER_NAMES {"arcs", "interval", "pow2", "single", "delta"}
-
- /* Names of merge functions for counters. */
-#define GCOV_MERGE_FUNCTIONS {"__gcov_merge_add", \
- "__gcov_merge_add", \
- "__gcov_merge_add", \
- "__gcov_merge_single", \
- "__gcov_merge_delta"}
-
+
+/* Number of top N counters when being in memory. */
+#define GCOV_TOPN_MEM_COUNTERS 3
+
+/* Number of top N counters in disk representation. */
+#define GCOV_TOPN_DISK_COUNTERS 2
+
+/* Maximum number of tracked TOP N value profiles. */
+#define GCOV_TOPN_MAXIMUM_TRACKED_VALUES 32
+
/* Convert a counter index to a tag. */
#define GCOV_TAG_FOR_COUNTER(COUNT) \
(GCOV_TAG_COUNTER_BASE + ((gcov_unsigned_t)(COUNT) << 17))
/* Return nonzero if SUB is an immediate subtag of TAG. */
#define GCOV_TAG_IS_SUBTAG(TAG,SUB) \
(GCOV_TAG_MASK (TAG) >> 8 == GCOV_TAG_MASK (SUB) \
- && !(((SUB) ^ (TAG)) & ~GCOV_TAG_MASK(TAG)))
+ && !(((SUB) ^ (TAG)) & ~GCOV_TAG_MASK (TAG)))
/* Return nonzero if SUB is at a sublevel to TAG. */
#define GCOV_TAG_IS_SUBLEVEL(TAG,SUB) \
#define GCOV_ARC_FAKE (1 << 1)
#define GCOV_ARC_FALLTHROUGH (1 << 2)
-/* Structured records. */
-
-/* Cumulative counter data. */
-struct gcov_ctr_summary
-{
- gcov_unsigned_t num; /* number of counters. */
- gcov_unsigned_t runs; /* number of program runs */
- gcov_type sum_all; /* sum of all counters accumulated. */
- gcov_type run_max; /* maximum value on a single run. */
- gcov_type sum_max; /* sum of individual run max values. */
-};
-
/* Object & program summary record. */
-struct gcov_summary
-{
- gcov_unsigned_t checksum; /* checksum of program */
- struct gcov_ctr_summary ctrs[GCOV_COUNTERS_SUMMABLE];
-};
-
-/* Structures embedded in coveraged program. The structures generated
- by write_profile must match these. */
-
-#if IN_LIBGCOV
-/* Information about a single function. This uses the trailing array
- idiom. The number of counters is determined from the counter_mask
- in gcov_info. We hold an array of function info, so have to
- explicitly calculate the correct array stride. */
-struct gcov_fn_info
-{
- gcov_unsigned_t ident; /* unique ident of function */
- gcov_unsigned_t checksum; /* function checksum */
- unsigned n_ctrs[0]; /* instrumented counters */
-};
-
-/* Type of function used to merge counters. */
-typedef void (*gcov_merge_fn) (gcov_type *, gcov_unsigned_t);
-
-/* Information about counters. */
-struct gcov_ctr_info
-{
- gcov_unsigned_t num; /* number of counters. */
- gcov_type *values; /* their values. */
- gcov_merge_fn merge; /* The function used to merge them. */
-};
-/* Information about a single object file. */
-struct gcov_info
+struct gcov_summary
{
- 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 */
-
- unsigned n_functions; /* number of functions */
- const struct gcov_fn_info *functions; /* table of functions */
-
- unsigned ctr_mask; /* mask of counters instrumented. */
- struct gcov_ctr_info counts[0]; /* count data. The number of bits
- set in the ctr_mask field
- determines how big this array
- is. */
+ gcov_unsigned_t runs; /* Number of program runs. */
+ gcov_type sum_max; /* Sum of individual run max values. */
};
-/* Register a new object file module. */
-extern void __gcov_init (struct gcov_info *);
-
-/* Called before fork, to avoid double counting. */
-extern void __gcov_flush (void);
-
-/* The merge function that just sums the counters. */
-extern void __gcov_merge_add (gcov_type *, unsigned);
-
-/* The merge function to choose the most common value. */
-extern void __gcov_merge_single (gcov_type *, unsigned);
-
-/* The merge function to choose the most common difference between
- consecutive values. */
-extern void __gcov_merge_delta (gcov_type *, unsigned);
-#endif /* IN_LIBGCOV */
-
-#if IN_LIBGCOV >= 0
-
-/* Optimum number of gcov_unsigned_t's read from or written to disk. */
-#define GCOV_BLOCK_SIZE (1 << 10)
-
-GCOV_LINKAGE struct gcov_var
-{
- FILE *file;
- gcov_position_t start; /* Position of first byte of block */
- unsigned offset; /* Read/write position within the block. */
- unsigned length; /* Read limit in the block. */
- unsigned overread; /* Number of words overread. */
- int error; /* < 0 overflow, > 0 disk error. */
- int mode; /* < 0 writing, > 0 reading */
-#if IN_LIBGCOV
- /* Holds one block plus 4 bytes, thus all coverage reads & writes
- fit within this buffer and we always can transfer GCOV_BLOCK_SIZE
- to and from the disk. libgcov never backtracks and only writes 4
- or 8 byte objects. */
- gcov_unsigned_t buffer[GCOV_BLOCK_SIZE + 1];
-#else
- int endian; /* Swap endianness. */
- /* Holds a variable length block, as the compiler can write
- strings and needs to backtrack. */
- size_t alloc;
- gcov_unsigned_t *buffer;
-#endif
-} gcov_var;
+#if !defined(inhibit_libc)
/* Functions for reading and writing gcov files. In libgcov you can
open the file for reading then writing. Elsewhere you can open the
file either for reading or for writing. When reading a file you may
- use the gcov_read_* functions, gcov_sync, gcov_position, &
- gcov_error. When writing a file you may use the gcov_write
- functions, gcov_seek & gcov_error. When a file is to be rewritten
+ use the gcov_read_* functions, gcov_sync, gcov_position, and
+ gcov_error. When writing a file you may use the gcov_write*
+ functions and gcov_error. When a file is to be rewritten
you use the functions for reading, then gcov_rewrite then the
functions for writing. Your file may become corrupted if you break
these invariants. */
-#if IN_LIBGCOV
-GCOV_LINKAGE int gcov_open (const char */*name*/);
-#else
-GCOV_LINKAGE int gcov_open (const char */*name*/, int /*direction*/);
+
+#if !IN_LIBGCOV || defined (IN_GCOV_TOOL)
GCOV_LINKAGE int gcov_magic (gcov_unsigned_t, gcov_unsigned_t);
#endif
-GCOV_LINKAGE int gcov_close (void);
/* Available everywhere. */
-static gcov_position_t gcov_position (void);
-static int gcov_is_error (void);
-static int gcov_is_eof (void);
-
-GCOV_LINKAGE gcov_unsigned_t gcov_read_unsigned (void);
-GCOV_LINKAGE gcov_type gcov_read_counter (void);
-GCOV_LINKAGE void gcov_read_summary (struct gcov_summary *);
-
-#if IN_LIBGCOV
-/* Available only in libgcov */
-GCOV_LINKAGE void gcov_write_counter (gcov_type);
-GCOV_LINKAGE void gcov_write_tag_length (gcov_unsigned_t, gcov_unsigned_t);
-GCOV_LINKAGE void gcov_write_summary (gcov_unsigned_t /*tag*/,
- const struct gcov_summary *);
-static void gcov_truncate (void);
-static void gcov_rewrite (void);
-GCOV_LINKAGE void gcov_seek (gcov_position_t /*position*/);
-#else
-/* Available outside libgcov */
+GCOV_LINKAGE int gcov_open (const char *, int) ATTRIBUTE_HIDDEN;
+GCOV_LINKAGE int gcov_close (void) ATTRIBUTE_HIDDEN;
+GCOV_LINKAGE gcov_unsigned_t gcov_read_unsigned (void) ATTRIBUTE_HIDDEN;
+GCOV_LINKAGE gcov_type gcov_read_counter (void) ATTRIBUTE_HIDDEN;
+GCOV_LINKAGE void gcov_read_summary (struct gcov_summary *) ATTRIBUTE_HIDDEN;
GCOV_LINKAGE const char *gcov_read_string (void);
GCOV_LINKAGE void gcov_sync (gcov_position_t /*base*/,
gcov_unsigned_t /*length */);
-#endif
+char *mangle_path (char const *base);
#if !IN_GCOV
/* Available outside gcov */
-GCOV_LINKAGE void gcov_write_unsigned (gcov_unsigned_t);
+GCOV_LINKAGE void gcov_write (const void *, unsigned) ATTRIBUTE_HIDDEN;
+GCOV_LINKAGE void gcov_write_unsigned (gcov_unsigned_t) ATTRIBUTE_HIDDEN;
#endif
#if !IN_GCOV && !IN_LIBGCOV
/* Available only in compiler */
GCOV_LINKAGE void gcov_write_string (const char *);
+GCOV_LINKAGE void gcov_write_filename (const char *);
GCOV_LINKAGE gcov_position_t gcov_write_tag (gcov_unsigned_t);
GCOV_LINKAGE void gcov_write_length (gcov_position_t /*position*/);
#endif
GCOV_LINKAGE time_t gcov_time (void);
#endif
-/* Make sure the library is used correctly. */
-#if ENABLE_CHECKING
-#define GCOV_CHECK(expr) ((expr) ? (void)0 : (void)abort ())
-#else
-#define GCOV_CHECK(expr)
-#endif
-#define GCOV_CHECK_READING() GCOV_CHECK(gcov_var.mode > 0)
-#define GCOV_CHECK_WRITING() GCOV_CHECK(gcov_var.mode < 0)
-
-/* Save the current position in the gcov file. */
-
-static inline gcov_position_t
-gcov_position (void)
-{
- GCOV_CHECK_READING ();
- return gcov_var.start + gcov_var.offset;
-}
-
-/* Return nonzero if we read to end of file. */
-
-static inline int
-gcov_is_eof (void)
-{
- return !gcov_var.overread;
-}
-
-/* Return nonzero if the error flag is set. */
-
-static inline int
-gcov_is_error (void)
-{
- return gcov_var.file ? gcov_var.error : 1;
-}
-
-#if IN_LIBGCOV
-/* Move to beginning of file and initialize for writing. */
-
-static inline void
-gcov_rewrite (void)
-{
- GCOV_CHECK_READING ();
- gcov_var.mode = -1;
- gcov_var.start = 0;
- gcov_var.offset = 0;
- fseek (gcov_var.file, 0L, SEEK_SET);
-}
-
-static inline void
-gcov_truncate (void)
-{
- ftruncate (fileno (gcov_var.file), 0L);
-}
-#endif
-
-#endif /* IN_LIBGCOV >= 0 */
+#endif /* !inhibit_libc */
#endif /* GCC_GCOV_IO_H */
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