Document gcov-io (PR gcov-profile/84735).

2018-03-08  Martin Liska  <mliska@suse.cz>

	PR gcov-profile/84735
	* doc/gcov.texi: Document usage of profile files.
	* gcov-io.h: Document changes in the format.

From-SVN: r258360

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 17ca051686e1b937d0c9b2c1073abfc90f31d1d8..2a7939745e0c5dbd7cea77b8e8d5c9ff36f55e88 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2018-03-08  Martin Liska  <mliska@suse.cz>
+
+       PR gcov-profile/84735
+       * doc/gcov.texi: Document usage of profile files.
+       * gcov-io.h: Document changes in the format.
+
 2018-03-08  Alexandre Oliva <aoliva@redhat.com>
 
        PR debug/84404

diff --git a/gcc/doc/gcov.texi b/gcc/doc/gcov.texi
index d4c7806bc23c24ebb23c40150044242955f88c55..59235876aaac1b230418314e19148a13e3259b8b 100644 (file)
--- a/gcc/doc/gcov.texi
+++ b/gcc/doc/gcov.texi
@@ -816,9 +816,9 @@ A separate @file{.gcda} file is created for each object file compiled with
 this option.  It contains arc transition counts, value profile counts, and
 some summary information.
 
-The full details of the file format is specified in @file{gcov-io.h},
-and functions provided in that header file should be used to access the
-coverage files.
+It is not recommended to access the coverage files directly.
+Consumers should use the intermediate format that is provided
+by @command{gcov} tool via @option{--intermediate-format} option.
 
 @node Cross-profiling
 @section Data File Relocation to Support Cross-Profiling

diff --git a/gcc/gcov-io.h b/gcc/gcov-io.h
index 18937e354748b7683684c188c896d6c31f2cfb19..d6389c4890805a443ca9e4f288bfaf0912a1ce82 100644 (file)
--- a/gcc/gcov-io.h
+++ b/gcc/gcov-io.h
@@ -48,7 +48,11 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
        padding: | char:0 | char:0 char:0 | char:0 char:0 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*
 
@@ -104,7 +108,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
        function-graph: announce_function basic_blocks {arcs | lines}*
        announce_function: header int32:ident
                int32:lineno_checksum int32:cfg_checksum
-               string:name string:source int32:lineno
+               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