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authorBen Cheng <bccheng@google.com>2014-03-26 05:37:19 (GMT)
committerBen Cheng <bccheng@google.com>2014-03-26 05:37:19 (GMT)
commit1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch)
treec607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/libgcc/libgcov-driver-system.c
parent283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff)
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Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/libgcc/libgcov-driver-system.c')
-rw-r--r--gcc-4.9/libgcc/libgcov-driver-system.c203
1 files changed, 203 insertions, 0 deletions
diff --git a/gcc-4.9/libgcc/libgcov-driver-system.c b/gcc-4.9/libgcc/libgcov-driver-system.c
new file mode 100644
index 0000000..1bb7402
--- /dev/null
+++ b/gcc-4.9/libgcc/libgcov-driver-system.c
@@ -0,0 +1,203 @@
+/* Routines required for instrumenting a program. */
+/* Compile this one with gcc. */
+/* Copyright (C) 1989-2014 Free Software Foundation, Inc.
+
+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 3, 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.
+
+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/>. */
+
+/* A utility function for outputing errors. */
+
+static int __attribute__((format(printf, 1, 2)))
+gcov_error (const char *fmt, ...)
+{
+ int ret;
+ va_list argp;
+ va_start (argp, fmt);
+ ret = vfprintf (stderr, fmt, argp);
+ va_end (argp);
+ return ret;
+}
+
+/* Make sure path component of the given FILENAME exists, create
+ missing directories. FILENAME must be writable.
+ Returns zero on success, or -1 if an error occurred. */
+
+static int
+create_file_directory (char *filename)
+{
+#if !defined(TARGET_POSIX_IO) && !defined(_WIN32)
+ (void) filename;
+ return -1;
+#else
+ char *s;
+
+ s = filename;
+
+ if (HAS_DRIVE_SPEC(s))
+ s += 2;
+ if (IS_DIR_SEPARATOR(*s))
+ ++s;
+ for (; *s != '\0'; s++)
+ if (IS_DIR_SEPARATOR(*s))
+ {
+ char sep = *s;
+ *s = '\0';
+
+ /* Try to make directory if it doesn't already exist. */
+ if (access (filename, F_OK) == -1
+#ifdef TARGET_POSIX_IO
+ && mkdir (filename, 0755) == -1
+#else
+ && mkdir (filename) == -1
+#endif
+ /* The directory might have been made by another process. */
+ && errno != EEXIST)
+ {
+ gcov_error ("profiling:%s:Cannot create directory\n", filename);
+ *s = sep;
+ return -1;
+ };
+
+ *s = sep;
+ };
+ return 0;
+#endif
+}
+
+static void
+allocate_filename_struct (struct gcov_filename_aux *gf)
+{
+ const char *gcov_prefix;
+ int gcov_prefix_strip = 0;
+ size_t prefix_length;
+ char *gi_filename_up;
+
+ gcc_assert (gf);
+ {
+ /* Check if the level of dirs to strip off specified. */
+ char *tmp = getenv("GCOV_PREFIX_STRIP");
+ if (tmp)
+ {
+ gcov_prefix_strip = atoi (tmp);
+ /* Do not consider negative values. */
+ if (gcov_prefix_strip < 0)
+ gcov_prefix_strip = 0;
+ }
+ }
+
+ /* Get file name relocation prefix. Non-absolute values are ignored. */
+ gcov_prefix = getenv("GCOV_PREFIX");
+ if (gcov_prefix)
+ {
+ prefix_length = strlen(gcov_prefix);
+
+ /* Remove an unnecessary trailing '/' */
+ if (IS_DIR_SEPARATOR (gcov_prefix[prefix_length - 1]))
+ prefix_length--;
+ }
+ else
+ prefix_length = 0;
+
+ /* If no prefix was specified and a prefix stip, then we assume
+ relative. */
+ if (gcov_prefix_strip != 0 && prefix_length == 0)
+ {
+ gcov_prefix = ".";
+ prefix_length = 1;
+ }
+ /* Allocate and initialize the filename scratch space plus one. */
+ gi_filename = (char *) xmalloc (prefix_length + gcov_max_filename + 2);
+ if (prefix_length)
+ memcpy (gi_filename, gcov_prefix, prefix_length);
+ gi_filename_up = gi_filename + prefix_length;
+
+ gf->gi_filename_up = gi_filename_up;
+ gf->prefix_length = prefix_length;
+ gf->gcov_prefix_strip = gcov_prefix_strip;
+}
+
+/* Open a gcda file specified by GI_FILENAME.
+ Return -1 on error. Return 0 on success. */
+
+static int
+gcov_exit_open_gcda_file (struct gcov_info *gi_ptr, struct gcov_filename_aux *gf)
+{
+ int gcov_prefix_strip;
+ size_t prefix_length;
+ char *gi_filename_up;
+ const char *fname, *s;
+
+ gcov_prefix_strip = gf->gcov_prefix_strip;
+ gi_filename_up = gf->gi_filename_up;
+ prefix_length = gf->prefix_length;
+ fname = gi_ptr->filename;
+
+ /* Avoid to add multiple drive letters into combined path. */
+ if (prefix_length != 0 && HAS_DRIVE_SPEC(fname))
+ fname += 2;
+
+ /* Build relocated filename, stripping off leading
+ directories from the initial filename if requested. */
+ if (gcov_prefix_strip > 0)
+ {
+ int level = 0;
+
+ s = fname;
+ if (IS_DIR_SEPARATOR(*s))
+ ++s;
+
+ /* Skip selected directory levels. */
+ for (; (*s != '\0') && (level < gcov_prefix_strip); s++)
+ if (IS_DIR_SEPARATOR(*s))
+ {
+ fname = s;
+ level++;
+ }
+ }
+
+ /* Update complete filename with stripped original. */
+ if (prefix_length != 0 && !IS_DIR_SEPARATOR (*fname))
+ {
+ /* If prefix is given, add directory separator. */
+ strcpy (gi_filename_up, "/");
+ strcpy (gi_filename_up + 1, fname);
+ }
+ else
+ strcpy (gi_filename_up, fname);
+
+ if (!gcov_open (gi_filename))
+ {
+ /* Open failed likely due to missed directory.
+ Create directory and retry to open file. */
+ if (create_file_directory (gi_filename))
+ {
+ fprintf (stderr, "profiling:%s:Skip\n", gi_filename);
+ return -1;
+ }
+ if (!gcov_open (gi_filename))
+ {
+ fprintf (stderr, "profiling:%s:Cannot open\n", gi_filename);
+ return -1;
+ }
+ }
+
+ return 0;
+}