/* File format for coverage information
- Copyright (C) 1996, 1997, 1998, 2000, 2002,
- 2003 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998, 2000, 2002, 2003, 2004, 2005
+ Free Software Foundation, Inc.
Contributed by Bob Manson <manson@cygnus.com>.
Completely remangled by Nathan Sidwell <nathan@codesourcery.com>.
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. */
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
/* Routines declared in gcov-io.h. This file should be #included by
another source file, after having #included gcov-io.h. */
#if !IN_GCOV
static void gcov_write_block (unsigned);
-static gcov_unsigned_t *gcov_write_bytes (unsigned);
+static gcov_unsigned_t *gcov_write_words (unsigned);
#endif
-static const gcov_unsigned_t *gcov_read_bytes (unsigned);
+static const gcov_unsigned_t *gcov_read_words (unsigned);
#if !IN_LIBGCOV
static void gcov_allocate (unsigned);
#endif
#endif
#if GCOV_LOCKED
struct flock s_flock;
+ int fd;
s_flock.l_type = F_WRLCK;
s_flock.l_whence = SEEK_SET;
s_flock.l_pid = getpid ();
#endif
- if (gcov_var.file)
- abort ();
+ gcc_assert (!gcov_var.file);
gcov_var.start = 0;
gcov_var.offset = gcov_var.length = 0;
- gcov_var.overread = -4u;
+ gcov_var.overread = -1u;
gcov_var.error = 0;
#if !IN_LIBGCOV
gcov_var.endian = 0;
#endif
+#if GCOV_LOCKED
+ if (mode > 0)
+ fd = open (name, O_RDWR);
+ else
+ fd = open (name, O_RDWR | O_CREAT, 0666);
+ if (fd < 0)
+ return 0;
+
+ while (fcntl (fd, F_SETLKW, &s_flock) && errno == EINTR)
+ continue;
+
+ gcov_var.file = fdopen (fd, "r+b");
+ if (!gcov_var.file)
+ {
+ close (fd);
+ return 0;
+ }
+
+ if (mode > 0)
+ gcov_var.mode = 1;
+ else if (mode == 0)
+ {
+ struct stat st;
+
+ if (fstat (fd, &st) < 0)
+ {
+ fclose (gcov_var.file);
+ gcov_var.file = 0;
+ return 0;
+ }
+ if (st.st_size != 0)
+ gcov_var.mode = 1;
+ else
+ gcov_var.mode = mode * 2 + 1;
+ }
+ else
+ gcov_var.mode = mode * 2 + 1;
+#else
if (mode >= 0)
gcov_var.file = fopen (name, "r+b");
if (gcov_var.file)
}
if (!gcov_var.file)
return 0;
-
- setbuf (gcov_var.file, (char *)0);
-
-#if GCOV_LOCKED
- while (fcntl (fileno (gcov_var.file), F_SETLKW, &s_flock)
- && errno == EINTR)
- continue;
#endif
+ setbuf (gcov_var.file, (char *)0);
+
return 1;
}
new_size *= 2;
gcov_var.alloc = new_size;
- gcov_var.buffer = xrealloc (gcov_var.buffer, new_size);
+ gcov_var.buffer = xrealloc (gcov_var.buffer, new_size << 2);
}
#endif
static void
gcov_write_block (unsigned size)
{
- if (fwrite (gcov_var.buffer, size, 1, gcov_var.file) != 1)
+ if (fwrite (gcov_var.buffer, size << 2, 1, gcov_var.file) != 1)
gcov_var.error = 1;
gcov_var.start += size;
gcov_var.offset -= size;
pointer to those bytes, or NULL on failure. */
static gcov_unsigned_t *
-gcov_write_bytes (unsigned bytes)
+gcov_write_words (unsigned words)
{
gcov_unsigned_t *result;
- GCOV_CHECK_WRITING ();
- GCOV_CHECK (!(bytes & 3));
+ gcc_assert (gcov_var.mode < 0);
#if IN_LIBGCOV
if (gcov_var.offset >= GCOV_BLOCK_SIZE)
{
gcov_write_block (GCOV_BLOCK_SIZE);
if (gcov_var.offset)
{
- GCOV_CHECK (gcov_var.offset == 4);
+ gcc_assert (gcov_var.offset == 1);
memcpy (gcov_var.buffer, gcov_var.buffer + GCOV_BLOCK_SIZE, 4);
}
}
#else
- if (gcov_var.offset + bytes > gcov_var.alloc)
- gcov_allocate (gcov_var.offset + bytes);
+ if (gcov_var.offset + words > gcov_var.alloc)
+ gcov_allocate (gcov_var.offset + words);
#endif
- result = (gcov_unsigned_t *)&gcov_var.buffer[gcov_var.offset];
- gcov_var.offset += bytes;
+ result = &gcov_var.buffer[gcov_var.offset];
+ gcov_var.offset += words;
return result;
}
GCOV_LINKAGE void
gcov_write_unsigned (gcov_unsigned_t value)
{
- gcov_unsigned_t *buffer = gcov_write_bytes (4);
+ gcov_unsigned_t *buffer = gcov_write_words (1);
buffer[0] = value;
}
GCOV_LINKAGE void
gcov_write_counter (gcov_type value)
{
- gcov_unsigned_t *buffer = gcov_write_bytes (8);
+ gcov_unsigned_t *buffer = gcov_write_words (2);
buffer[0] = (gcov_unsigned_t) value;
if (sizeof (value) > sizeof (gcov_unsigned_t))
buffer[1] = (gcov_unsigned_t) (value >> 32);
else
buffer[1] = 0;
-
- if (value < 0)
- gcov_var.error = -1;
}
#endif /* IN_LIBGCOV */
alloc = (length + 4) >> 2;
}
- buffer = gcov_write_bytes (4 + alloc * 4);
+ buffer = gcov_write_words (1 + alloc);
buffer[0] = alloc;
buffer[alloc] = 0;
gcov_write_tag (gcov_unsigned_t tag)
{
gcov_position_t result = gcov_var.start + gcov_var.offset;
- gcov_unsigned_t *buffer = gcov_write_bytes (8);
+ gcov_unsigned_t *buffer = gcov_write_words (2);
buffer[0] = tag;
buffer[1] = 0;
gcov_unsigned_t length;
gcov_unsigned_t *buffer;
- GCOV_CHECK_WRITING ();
- GCOV_CHECK (position + 8 <= gcov_var.start + gcov_var.offset);
- GCOV_CHECK (position >= gcov_var.start);
+ gcc_assert (gcov_var.mode < 0);
+ gcc_assert (position + 2 <= gcov_var.start + gcov_var.offset);
+ gcc_assert (position >= gcov_var.start);
offset = position - gcov_var.start;
- length = gcov_var.offset - offset - 8;
+ length = gcov_var.offset - offset - 2;
buffer = (gcov_unsigned_t *) &gcov_var.buffer[offset];
buffer[1] = length;
if (gcov_var.offset >= GCOV_BLOCK_SIZE)
GCOV_LINKAGE void
gcov_write_tag_length (gcov_unsigned_t tag, gcov_unsigned_t length)
{
- gcov_unsigned_t *buffer = gcov_write_bytes (8);
+ gcov_unsigned_t *buffer = gcov_write_words (2);
buffer[0] = tag;
buffer[1] = length;
NULL on failure (read past EOF). */
static const gcov_unsigned_t *
-gcov_read_bytes (unsigned bytes)
+gcov_read_words (unsigned words)
{
const gcov_unsigned_t *result;
unsigned excess = gcov_var.length - gcov_var.offset;
- GCOV_CHECK_READING ();
- GCOV_CHECK (!(bytes & 3));
- if (excess < bytes)
+ gcc_assert (gcov_var.mode > 0);
+ if (excess < words)
{
gcov_var.start += gcov_var.offset;
#if IN_LIBGCOV
if (excess)
{
- GCOV_CHECK (excess == 4);
+ gcc_assert (excess == 1);
memcpy (gcov_var.buffer, gcov_var.buffer + gcov_var.offset, 4);
}
#else
- memmove (gcov_var.buffer, gcov_var.buffer + gcov_var.offset, excess);
+ memmove (gcov_var.buffer, gcov_var.buffer + gcov_var.offset, excess * 4);
#endif
gcov_var.offset = 0;
gcov_var.length = excess;
#if IN_LIBGCOV
- GCOV_CHECK (!gcov_var.length || gcov_var.length == 4);
+ gcc_assert (!gcov_var.length || gcov_var.length == 1);
excess = GCOV_BLOCK_SIZE;
#else
- if (gcov_var.length + bytes > gcov_var.alloc)
- gcov_allocate (gcov_var.length + bytes);
+ if (gcov_var.length + words > gcov_var.alloc)
+ gcov_allocate (gcov_var.length + words);
excess = gcov_var.alloc - gcov_var.length;
#endif
excess = fread (gcov_var.buffer + gcov_var.length,
- 1, excess, gcov_var.file);
+ 1, excess << 2, gcov_var.file) >> 2;
gcov_var.length += excess;
- if (gcov_var.length < bytes)
+ if (gcov_var.length < words)
{
- gcov_var.overread += bytes - gcov_var.length;
+ gcov_var.overread += words - gcov_var.length;
gcov_var.length = 0;
return 0;
}
}
- result = (gcov_unsigned_t *)&gcov_var.buffer[gcov_var.offset];
- gcov_var.offset += bytes;
+ result = &gcov_var.buffer[gcov_var.offset];
+ gcov_var.offset += words;
return result;
}
gcov_read_unsigned (void)
{
gcov_unsigned_t value;
- const gcov_unsigned_t *buffer = gcov_read_bytes (4);
+ const gcov_unsigned_t *buffer = gcov_read_words (1);
if (!buffer)
return 0;
gcov_read_counter (void)
{
gcov_type value;
- const gcov_unsigned_t *buffer = gcov_read_bytes (8);
+ const gcov_unsigned_t *buffer = gcov_read_words (2);
if (!buffer)
return 0;
value |= ((gcov_type) from_file (buffer[1])) << 32;
else if (buffer[1])
gcov_var.error = -1;
-
- if (value < 0)
- gcov_var.error = -1;
+
return value;
}
if (!length)
return 0;
- return (const char *) gcov_read_bytes (length);
+ return (const char *) gcov_read_words (length);
}
#endif
GCOV_LINKAGE void
gcov_sync (gcov_position_t base, gcov_unsigned_t length)
{
- GCOV_CHECK_READING ();
+ gcc_assert (gcov_var.mode > 0);
base += length;
if (base - gcov_var.start <= gcov_var.length)
gcov_var.offset = base - gcov_var.start;
else
{
gcov_var.offset = gcov_var.length = 0;
- fseek (gcov_var.file, base, SEEK_SET);
- gcov_var.start = ftell (gcov_var.file);
+ fseek (gcov_var.file, base << 2, SEEK_SET);
+ gcov_var.start = ftell (gcov_var.file) >> 2;
}
}
#endif
#if IN_LIBGCOV
-/* Move to the a set position in a gcov file. BASE is zero to move to
- the end, and nonzero to move to that position. */
+/* Move to the a set position in a gcov file. */
GCOV_LINKAGE void
gcov_seek (gcov_position_t base)
{
- GCOV_CHECK_WRITING ();
+ gcc_assert (gcov_var.mode < 0);
if (gcov_var.offset)
gcov_write_block (gcov_var.offset);
- fseek (gcov_var.file, base, base ? SEEK_SET : SEEK_END);
- gcov_var.start = ftell (gcov_var.file);
+ fseek (gcov_var.file, base << 2, SEEK_SET);
+ gcov_var.start = ftell (gcov_var.file) >> 2;
}
#endif