diff options
Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/gcov-io.c')
-rw-r--r-- | gcc-4.2.1-5666.3/gcc/gcov-io.c | 537 |
1 files changed, 0 insertions, 537 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/gcov-io.c b/gcc-4.2.1-5666.3/gcc/gcov-io.c deleted file mode 100644 index ab8e08db4..000000000 --- a/gcc-4.2.1-5666.3/gcc/gcov-io.c +++ /dev/null @@ -1,537 +0,0 @@ -/* File format for coverage information - 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>. - -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 2, 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. - -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, 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_words (unsigned); -#endif -static const gcov_unsigned_t *gcov_read_words (unsigned); -#if !IN_LIBGCOV -static void gcov_allocate (unsigned); -#endif - -static inline gcov_unsigned_t from_file (gcov_unsigned_t value) -{ -#if !IN_LIBGCOV - if (gcov_var.endian) - { - value = (value >> 16) | (value << 16); - value = ((value & 0xff00ff) << 8) | ((value >> 8) & 0xff00ff); - } -#endif - return value; -} - -/* Open a gcov file. NAME is the name of the file to open and MODE - indicates whether a new file should be created, or an existing file - opened for modification. If MODE is >= 0 an existing file will be - opened, if possible, and if MODE is <= 0, a new file will be - created. Use MODE=0 to attempt to reopen an existing file and then - fall back on creating a new one. Return zero on failure, >0 on - opening an existing file and <0 on creating a new one. */ - -GCOV_LINKAGE int -#if IN_LIBGCOV -gcov_open (const char *name) -#else -gcov_open (const char *name, int mode) -#endif -{ -#if IN_LIBGCOV - const int mode = 0; -#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_start = 0; - s_flock.l_len = 0; /* Until EOF. */ - s_flock.l_pid = getpid (); -#endif - - gcc_assert (!gcov_var.file); - gcov_var.start = 0; - gcov_var.offset = gcov_var.length = 0; - 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) - gcov_var.mode = 1; - else if (mode <= 0) - { - gcov_var.file = fopen (name, "w+b"); - if (gcov_var.file) - gcov_var.mode = mode * 2 + 1; - } - if (!gcov_var.file) - return 0; -#endif - - setbuf (gcov_var.file, (char *)0); - - return 1; -} - -/* Close the current gcov file. Flushes data to disk. Returns nonzero - on failure or error flag set. */ - -GCOV_LINKAGE int -gcov_close (void) -{ - if (gcov_var.file) - { -#if !IN_GCOV - if (gcov_var.offset && gcov_var.mode < 0) - gcov_write_block (gcov_var.offset); -#endif - fclose (gcov_var.file); - gcov_var.file = 0; - gcov_var.length = 0; - } -#if !IN_LIBGCOV - free (gcov_var.buffer); - gcov_var.alloc = 0; - gcov_var.buffer = 0; -#endif - gcov_var.mode = 0; - return gcov_var.error; -} - -#if !IN_LIBGCOV -/* Check if MAGIC is EXPECTED. Use it to determine endianness of the - file. Returns +1 for same endian, -1 for other endian and zero for - not EXPECTED. */ - -GCOV_LINKAGE int -gcov_magic (gcov_unsigned_t magic, gcov_unsigned_t expected) -{ - if (magic == expected) - return 1; - magic = (magic >> 16) | (magic << 16); - magic = ((magic & 0xff00ff) << 8) | ((magic >> 8) & 0xff00ff); - if (magic == expected) - { - gcov_var.endian = 1; - return -1; - } - return 0; -} -#endif - -#if !IN_LIBGCOV -static void -gcov_allocate (unsigned length) -{ - size_t new_size = gcov_var.alloc; - - if (!new_size) - new_size = GCOV_BLOCK_SIZE; - new_size += length; - new_size *= 2; - - gcov_var.alloc = new_size; - gcov_var.buffer = xrealloc (gcov_var.buffer, new_size << 2); -} -#endif - -#if !IN_GCOV -/* Write out the current block, if needs be. */ - -static void -gcov_write_block (unsigned size) -{ - if (fwrite (gcov_var.buffer, size << 2, 1, gcov_var.file) != 1) - gcov_var.error = 1; - gcov_var.start += size; - gcov_var.offset -= size; -} - -/* Allocate space to write BYTES bytes to the gcov file. Return a - pointer to those bytes, or NULL on failure. */ - -static gcov_unsigned_t * -gcov_write_words (unsigned words) -{ - gcov_unsigned_t *result; - - 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) - { - gcc_assert (gcov_var.offset == 1); - memcpy (gcov_var.buffer, gcov_var.buffer + GCOV_BLOCK_SIZE, 4); - } - } -#else - if (gcov_var.offset + words > gcov_var.alloc) - gcov_allocate (gcov_var.offset + words); -#endif - result = &gcov_var.buffer[gcov_var.offset]; - gcov_var.offset += words; - - return result; -} - -/* Write unsigned VALUE to coverage file. Sets error flag - appropriately. */ - -GCOV_LINKAGE void -gcov_write_unsigned (gcov_unsigned_t value) -{ - gcov_unsigned_t *buffer = gcov_write_words (1); - - buffer[0] = value; -} - -/* Write counter VALUE to coverage file. Sets error flag - appropriately. */ - -#if IN_LIBGCOV -GCOV_LINKAGE void -gcov_write_counter (gcov_type value) -{ - 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; -} -#endif /* IN_LIBGCOV */ - -#if !IN_LIBGCOV -/* Write STRING to coverage file. Sets error flag on file - error, overflow flag on overflow */ - -GCOV_LINKAGE void -gcov_write_string (const char *string) -{ - unsigned length = 0; - unsigned alloc = 0; - gcov_unsigned_t *buffer; - - if (string) - { - length = strlen (string); - alloc = (length + 4) >> 2; - } - - buffer = gcov_write_words (1 + alloc); - - buffer[0] = alloc; - buffer[alloc] = 0; - memcpy (&buffer[1], string, length); -} -#endif - -#if !IN_LIBGCOV -/* Write a tag TAG and reserve space for the record length. Return a - value to be used for gcov_write_length. */ - -GCOV_LINKAGE gcov_position_t -gcov_write_tag (gcov_unsigned_t tag) -{ - gcov_position_t result = gcov_var.start + gcov_var.offset; - gcov_unsigned_t *buffer = gcov_write_words (2); - - buffer[0] = tag; - buffer[1] = 0; - - return result; -} - -/* Write a record length using POSITION, which was returned by - gcov_write_tag. The current file position is the end of the - record, and is restored before returning. Returns nonzero on - overflow. */ - -GCOV_LINKAGE void -gcov_write_length (gcov_position_t position) -{ - unsigned offset; - gcov_unsigned_t length; - gcov_unsigned_t *buffer; - - 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 - 2; - buffer = (gcov_unsigned_t *) &gcov_var.buffer[offset]; - buffer[1] = length; - if (gcov_var.offset >= GCOV_BLOCK_SIZE) - gcov_write_block (gcov_var.offset); -} - -#else /* IN_LIBGCOV */ - -/* Write a tag TAG and length LENGTH. */ - -GCOV_LINKAGE void -gcov_write_tag_length (gcov_unsigned_t tag, gcov_unsigned_t length) -{ - gcov_unsigned_t *buffer = gcov_write_words (2); - - buffer[0] = tag; - buffer[1] = length; -} - -/* Write a summary structure to the gcov file. Return nonzero on - overflow. */ - -GCOV_LINKAGE void -gcov_write_summary (gcov_unsigned_t tag, const struct gcov_summary *summary) -{ - unsigned ix; - const struct gcov_ctr_summary *csum; - - gcov_write_tag_length (tag, GCOV_TAG_SUMMARY_LENGTH); - gcov_write_unsigned (summary->checksum); - for (csum = summary->ctrs, ix = GCOV_COUNTERS_SUMMABLE; ix--; csum++) - { - gcov_write_unsigned (csum->num); - gcov_write_unsigned (csum->runs); - gcov_write_counter (csum->sum_all); - gcov_write_counter (csum->run_max); - gcov_write_counter (csum->sum_max); - } -} -#endif /* IN_LIBGCOV */ - -#endif /*!IN_GCOV */ - -/* Return a pointer to read BYTES bytes from the gcov file. Returns - NULL on failure (read past EOF). */ - -static const gcov_unsigned_t * -gcov_read_words (unsigned words) -{ - const gcov_unsigned_t *result; - unsigned excess = gcov_var.length - gcov_var.offset; - - gcc_assert (gcov_var.mode > 0); - if (excess < words) - { - gcov_var.start += gcov_var.offset; -#if IN_LIBGCOV - if (excess) - { - 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 * 4); -#endif - gcov_var.offset = 0; - gcov_var.length = excess; -#if IN_LIBGCOV - gcc_assert (!gcov_var.length || gcov_var.length == 1); - excess = GCOV_BLOCK_SIZE; -#else - 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 << 2, gcov_var.file) >> 2; - gcov_var.length += excess; - if (gcov_var.length < words) - { - gcov_var.overread += words - gcov_var.length; - gcov_var.length = 0; - return 0; - } - } - result = &gcov_var.buffer[gcov_var.offset]; - gcov_var.offset += words; - return result; -} - -/* Read unsigned value from a coverage file. Sets error flag on file - error, overflow flag on overflow */ - -GCOV_LINKAGE gcov_unsigned_t -gcov_read_unsigned (void) -{ - gcov_unsigned_t value; - const gcov_unsigned_t *buffer = gcov_read_words (1); - - if (!buffer) - return 0; - value = from_file (buffer[0]); - return value; -} - -/* Read counter value from a coverage file. Sets error flag on file - error, overflow flag on overflow */ - -GCOV_LINKAGE gcov_type -gcov_read_counter (void) -{ - gcov_type value; - const gcov_unsigned_t *buffer = gcov_read_words (2); - - if (!buffer) - return 0; - value = from_file (buffer[0]); - if (sizeof (value) > sizeof (gcov_unsigned_t)) - value |= ((gcov_type) from_file (buffer[1])) << 32; - else if (buffer[1]) - gcov_var.error = -1; - - return value; -} - -/* Read string from coverage file. Returns a pointer to a static - buffer, or NULL on empty string. You must copy the string before - calling another gcov function. */ - -#if !IN_LIBGCOV -GCOV_LINKAGE const char * -gcov_read_string (void) -{ - unsigned length = gcov_read_unsigned (); - - if (!length) - return 0; - - return (const char *) gcov_read_words (length); -} -#endif - -GCOV_LINKAGE void -gcov_read_summary (struct gcov_summary *summary) -{ - unsigned ix; - struct gcov_ctr_summary *csum; - - summary->checksum = gcov_read_unsigned (); - for (csum = summary->ctrs, ix = GCOV_COUNTERS_SUMMABLE; ix--; csum++) - { - csum->num = gcov_read_unsigned (); - csum->runs = gcov_read_unsigned (); - csum->sum_all = gcov_read_counter (); - csum->run_max = gcov_read_counter (); - csum->sum_max = gcov_read_counter (); - } -} - -#if !IN_LIBGCOV -/* Reset to a known position. BASE should have been obtained from - gcov_position, LENGTH should be a record length. */ - -GCOV_LINKAGE void -gcov_sync (gcov_position_t base, gcov_unsigned_t length) -{ - 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 << 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. */ - -GCOV_LINKAGE void -gcov_seek (gcov_position_t base) -{ - gcc_assert (gcov_var.mode < 0); - if (gcov_var.offset) - gcov_write_block (gcov_var.offset); - fseek (gcov_var.file, base << 2, SEEK_SET); - gcov_var.start = ftell (gcov_var.file) >> 2; -} -#endif - -#if IN_GCOV > 0 -/* Return the modification time of the current gcov file. */ - -GCOV_LINKAGE time_t -gcov_time (void) -{ - struct stat status; - - if (fstat (fileno (gcov_var.file), &status)) - return 0; - else - return status.st_mtime; -} -#endif /* IN_GCOV */ |