Add low level recording support

1 files changed, 121 insertions, 0 deletions

diff --git a/cpukit/libmisc/capture/record-userext.c b/cpukit/libmisc/capture/record-userext.c
new file mode 100644
index 0000000000..39f61eace8
--- /dev/null
+++ b/cpukit/libmisc/capture/record-userext.c
@@ -0,0 +1,121 @@
+/*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (C) 2018 embedded brains GmbH
+ *
+ * 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.
+ */
+
+#include <rtems/record.h>
+#include <rtems/score/thread.h>
+
+bool _Record_Thread_create(
+  struct _Thread_Control *executing,
+  struct _Thread_Control *created
+)
+{
+  rtems_record_context  context_storage;
+  rtems_record_context *context;
+  Objects_Id            id;
+
+  context = rtems_record_prepare( &context_storage, 2 );
+  context = rtems_record_add(
+    context,
+    RTEMS_RECORD_EVENT_THREAD_CREATED,
+    created->Object.id
+  );
+
+  /* The idle threads are created without an executing thread */
+  if ( executing != NULL ) {
+    id = executing->Object.id;
+  } else {
+    id = 0;
+  }
+
+  rtems_record_commit(
+    context,
+    RTEMS_RECORD_EVENT_THREAD_CREATED_BY,
+    id
+  );
+
+  return true;
+}
+
+void _Record_Thread_delete(
+  struct _Thread_Control *executing,
+  struct _Thread_Control *deleted
+)
+{
+  rtems_record_context  context_storage;
+  rtems_record_context *context;
+
+  context = rtems_record_prepare( &context_storage, 2 );
+  context = rtems_record_add(
+    context,
+    RTEMS_RECORD_EVENT_THREAD_DELETED,
+    deleted->Object.id
+  );
+  rtems_record_commit(
+    context,
+    RTEMS_RECORD_EVENT_THREAD_DELETED_BY,
+    executing->Object.id
+  );
+}
+
+void _Record_Thread_switch(
+  struct _Thread_Control *executing,
+  struct _Thread_Control *heir
+)
+{
+  rtems_record_context  context_storage;
+  rtems_record_context *context;
+
+  context = rtems_record_prepare( &context_storage, 3 );
+  context = rtems_record_add(
+    context,
+    RTEMS_RECORD_EVENT_THREAD_SWITCH_OUT,
+    executing->Object.id
+  );
+  context = rtems_record_add(
+    context,
+    RTEMS_RECORD_EVENT_THREAD_STACK_CURRENT,
+#if defined(__GNUC__)
+    (uintptr_t) __builtin_frame_address( 0 )
+      - (uintptr_t) executing->Start.Initial_stack.area
+#else
+    0
+#endif
+  );
+  rtems_record_commit(
+    context,
+    RTEMS_RECORD_EVENT_THREAD_SWITCH_IN,
+    heir->Object.id
+  );
+}
+
+void _Record_Thread_terminate( struct _Thread_Control *executing )
+{
+  rtems_record_produce(
+    RTEMS_RECORD_EVENT_THREAD_TERMINATED,
+    executing->Object.id
+  );
+}