[rtems commit] gcov: Add fork(), etc. gcov wrappers

Sebastian Huber sebh at rtems.org
Mon Jul 4 06:24:57 UTC 2022


Module:    rtems
Branch:    master
Commit:    2bc233fe585e755f62086e13b9bbbfe1bad31a1c
Changeset: http://git.rtems.org/rtems/commit/?id=2bc233fe585e755f62086e13b9bbbfe1bad31a1c

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Mon Jun 27 20:03:45 2022 +0200

gcov: Add fork(), etc. gcov wrappers

The compiler wraps fork(), etc. system calls if coverage generation is enabled.
These functions must be provided by the system.  For RTEMS, they just return an
error status.

Update #4670.

---

 cpukit/libcsupport/src/gcovfork.c | 94 +++++++++++++++++++++++++++++++++++++++
 spec/build/cpukit/librtemscpu.yml |  1 +
 2 files changed, 95 insertions(+)

diff --git a/cpukit/libcsupport/src/gcovfork.c b/cpukit/libcsupport/src/gcovfork.c
new file mode 100644
index 0000000000..763412d735
--- /dev/null
+++ b/cpukit/libcsupport/src/gcovfork.c
@@ -0,0 +1,94 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/**
+ * @file
+ *
+ * @ingroup libcsupport
+ *
+ * @brief This source file contains functions required by GCC if code and
+ *   branch coverage instrumentation (gcov) is enabled.
+ */
+
+/*
+ * Copyright (C) 2021 embedded brains GmbH (http://www.embedded-brains.de)
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <sys/types.h>
+
+#include <errno.h>
+
+#include <rtems/seterr.h>
+
+int __gcov_execl( const char *, char *, ... );
+
+int __gcov_execl( const char *path, char *arg, ... )
+{
+  rtems_set_errno_and_return_minus_one( ENOSYS );
+}
+
+int __gcov_execlp( const char *, char *, ... );
+
+int __gcov_execlp( const char *path, char *arg, ... )
+{
+  rtems_set_errno_and_return_minus_one( ENOSYS );
+}
+
+int __gcov_execle( const char *, char *, ... );
+
+int __gcov_execle( const char *path, char *arg, ... )
+{
+  rtems_set_errno_and_return_minus_one( ENOSYS );
+}
+
+int __gcov_execv( const char *, char *const[] );
+
+int __gcov_execv( const char *path, char *const argv[] )
+{
+  rtems_set_errno_and_return_minus_one( ENOSYS );
+}
+
+int __gcov_execvp( const char *, char *const[] );
+
+int __gcov_execvp( const char *path, char *const argv[] )
+{
+  rtems_set_errno_and_return_minus_one( ENOSYS );
+}
+
+int __gcov_execve( const char *, char *const[], char *const[] );
+
+int __gcov_execve( const char *path, char *const argv[], char *const envp[] )
+{
+  rtems_set_errno_and_return_minus_one( ENOSYS );
+}
+
+pid_t __gcov_fork( void );
+
+pid_t __gcov_fork( void )
+{
+  rtems_set_errno_and_return_minus_one( ENOSYS );
+}
diff --git a/spec/build/cpukit/librtemscpu.yml b/spec/build/cpukit/librtemscpu.yml
index 965419c389..4a8a0ee1ad 100644
--- a/spec/build/cpukit/librtemscpu.yml
+++ b/spec/build/cpukit/librtemscpu.yml
@@ -640,6 +640,7 @@ source:
 - cpukit/libcsupport/src/ftruncate.c
 - cpukit/libcsupport/src/ftrylockfile.c
 - cpukit/libcsupport/src/funlockfile.c
+- cpukit/libcsupport/src/gcovfork.c
 - cpukit/libcsupport/src/getchark.c
 - cpukit/libcsupport/src/getdents.c
 - cpukit/libcsupport/src/getegid.c



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