* final.c (end_final): Use C trees to output data structures for profiling.

	* Makefile.in (LIBGCC_DEPS): Added missing dependency on gcov-io.h
        (profile.o): New dependency profile.h
        (final.o): New dependency profile.h
        * profile.h: New file. New global structure profile_info.
        * final.h (count_edges_instrumented_now): Declare.
        (current_function_cfg_checksum): Declare.
        (function_list): New structure.
        (functions_head, functions_tail): New static variables.
        (end_final): Emits more data, removed some -ax stuff.
        (final): Stores function names and chcksums.
        * gcov-io.h (__write_gcov_string): New function.
        (__read_gcov_string): New function.
        * gcov.c (read_profile): New function.
        (create_program_flow_graph): Uses read_profile instead of reading
	da_file.
        (read_files): Removed da_file checking, it's done by read_profile now.
        * libgcc2.c (bb_function_info): New structure.
        (bb): New field in structure, removed some -ax stuff.
        (__bb_exit_func): Changed structure of da_file.
        * profile.c (count_edges_instrumented_now): New global variable.
        (current_function_cfg_checksum): New global variable.
        (max_counter_in_program): New global variable.
        (get_exec_counts): New function.
        (compute_checksum): New function.
        (instrument_edges): Sets count_edges_instrumented_now.
        (compute_branch_probabilities): Uses get_exec_counts instead of
	reading da_file.
        (branch_prob): Calls compute_checksum and writes extra data to bbg_file.
        (init_branch_prob): Removed da_file checking, done in get_exec_counts
	now.
        (end_branch_prob): Removed da_file checking, done in get_exec_counts
	now.
        * gcov.texi: Updated information about gcov file format.


git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@53326 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 108 insertions, 7 deletions

diff --git a/gcc/gcov-io.h b/gcc/gcov-io.h
index 7352429c80d..9e1c081b16d 100644
--- a/gcc/gcov-io.h
+++ b/gcc/gcov-io.h
@@ -24,13 +24,24 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 #include <stdio.h>
 #include <sys/types.h>
 
-static int __fetch_long	PARAMS ((long *, char *, size_t)) ATTRIBUTE_UNUSED;
-static int __read_long  PARAMS ((long *, FILE *, size_t)) ATTRIBUTE_UNUSED;
-static int __write_long PARAMS ((long, FILE *, size_t)) ATTRIBUTE_UNUSED;
-static int __fetch_gcov_type PARAMS ((gcov_type *, char *, size_t)) ATTRIBUTE_UNUSED;
-static int __store_gcov_type PARAMS ((gcov_type, char *, size_t)) ATTRIBUTE_UNUSED;
-static int __read_gcov_type  PARAMS ((gcov_type *, FILE *, size_t)) ATTRIBUTE_UNUSED;
-static int __write_gcov_type PARAMS ((gcov_type, FILE *, size_t)) ATTRIBUTE_UNUSED;
+static int __fetch_long	PARAMS ((long *, char *, size_t))
+	ATTRIBUTE_UNUSED;
+static int __read_long  PARAMS ((long *, FILE *, size_t))
+	ATTRIBUTE_UNUSED;
+static int __write_long PARAMS ((long, FILE *, size_t))
+	ATTRIBUTE_UNUSED;
+static int __fetch_gcov_type PARAMS ((gcov_type *, char *, size_t))
+	ATTRIBUTE_UNUSED;
+static int __store_gcov_type PARAMS ((gcov_type, char *, size_t))
+	ATTRIBUTE_UNUSED;
+static int __read_gcov_type  PARAMS ((gcov_type *, FILE *, size_t))
+	ATTRIBUTE_UNUSED;
+static int __write_gcov_type PARAMS ((gcov_type, FILE *, size_t))
+	ATTRIBUTE_UNUSED;
+static int __write_gcov_string PARAMS ((const char *, size_t, FILE*, long))
+	ATTRIBUTE_UNUSED;
+static int __read_gcov_string PARAMS ((char *, size_t, FILE*, long))
+	ATTRIBUTE_UNUSED;
 
 /* These routines only work for signed values.  */
 
@@ -193,4 +204,94 @@ __read_long (dest, file, bytes)
     return __fetch_long (dest, c, bytes);
 }
 
+
+/* Writes string in gcov format.  */
+
+static int
+__write_gcov_string (string, length, file, delim)
+     const char *string;
+     size_t length;
+     FILE *file;
+     long delim;
+{
+  size_t temp = length + 1;
+
+  /* delimiter */
+  if (__write_long (delim, file, 4) != 0)
+    return 1;
+
+  if (__write_long (length, file, 4) != 0)
+    return 1;
+
+  if (fwrite (string, temp, 1, file) != 1)
+    return 1;
+
+  temp &= 3;
+
+  if (temp)
+    {
+      char c[4];
+
+      c[0] = c[1] = c[2] = c[3] = 0;
+
+      if (fwrite (c, sizeof (char), 4 - temp, file) != 4 - temp)
+	return 1;
+    }
+
+  if (__write_long (delim, file, 4) != 0)
+    return 1;
+
+  return 0;
+}
+
+/* Reads string in gcov format.  */
+
+
+static int
+__read_gcov_string (string, max_length, file, delim)
+     char *string;
+     size_t max_length;
+     FILE *file;
+     long delim;
+{
+  long delim_from_file;
+  long length;
+  long read_length;
+  long tmp;
+
+  if (__read_long (&delim_from_file, file, 4) != 0)
+    return 1;
+
+  if (delim_from_file != delim)
+    return 1;
+
+  if (__read_long (&length, file, 4) != 0)
+    return 1;
+
+  if (length > (long) max_length)
+    read_length = max_length;
+  else
+    read_length = length;
+
+  tmp = (((length + 1) - 1) / 4 + 1) * 4;
+  /* This is the size occupied by the string in the file */
+
+  if (fread (string, read_length, 1, file) != 1)
+    return 1;
+
+  string[read_length] = 0;
+
+  if (fseek (file, tmp - read_length, SEEK_CUR) < 0)
+    return 1;
+
+  if (__read_long (&delim_from_file, file, 4) != 0)
+    return 1;
+
+  if (delim_from_file != delim)
+    return 1;
+
+  return 0;
+}
+
+
 #endif /* ! GCC_GCOV_IO_H */