1 files changed, 178 insertions, 0 deletions
diff --git a/cpukit/libmisc/capture/rtems-trace-buffer-vars.c b/cpukit/libmisc/capture/rtems-trace-buffer-vars.c
new file mode 100644
index 0000000000..ef958c58f7
--- /dev/null
+++ b/cpukit/libmisc/capture/rtems-trace-buffer-vars.c
@@ -0,0 +1,178 @@
+/*
+ *  Copyright (c) 2015 Chris Johns <chrisj@rtems.org>
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.org/license/LICENSE.
+ */
+
+#include <rtems.h>
+
+#include <rtems/trace/rtems-trace-buffer-vars.h>
+
+/**
+ * External Trace Linker and TBG data. We provide weak versions to allow us to
+ * link and be present in an application that has not been trace linked.
+ */
+
+/*
+ * Trace linker data.
+ */
+uint32_t __rtld_trace_names_size __attribute__ ((weak));
+const char const* __rtld_trace_names[1] __attribute__ ((weak));
+uint32_t __rtld_trace_enables_size __attribute__ ((weak));
+const uint32_t __rtld_trace_enables[1] __attribute__ ((weak));
+uint32_t __rtld_trace_triggers_size __attribute__ ((weak));
+const uint32_t __rtld_trace_triggers[1] __attribute__ ((weak));
+const __rtld_trace_sig __rtld_trace_signatures[1] __attribute__ ((weak));
+
+/*
+ * Trace buffer generator data.
+ */
+const bool __rtld_tbg_present __attribute__ ((weak));
+const uint32_t __rtld_tbg_mode __attribute__ ((weak));
+const uint32_t __rtld_tbg_buffer_size __attribute__ ((weak));
+uint32_t __rtld_tbg_buffer[1] __attribute__ ((weak));
+volatile uint32_t __rtld_tbg_buffer_in __attribute__ ((weak));
+volatile bool __rtld_tbg_finished __attribute__ ((weak));
+volatile bool __rtld_tbg_triggered __attribute__ ((weak));
+
+uint32_t
+rtems_trace_names_size (void)
+{
+  return __rtld_trace_names_size;
+}
+
+const char*
+rtems_trace_names (const uint32_t index)
+{
+  return __rtld_trace_names[index];
+}
+
+uint32_t
+rtems_trace_enables_size (void)
+{
+  return __rtld_trace_enables_size;
+}
+
+uint32_t
+rtems_trace_enables (const uint32_t index)
+{
+  return __rtld_trace_enables[index];
+}
+
+uint32_t
+rtems_trace_triggers_size (void)
+{
+  return __rtld_trace_triggers_size;
+}
+
+uint32_t
+rtems_trace_triggers (const uint32_t index)
+{
+  return __rtld_trace_triggers[index];
+}
+
+const rtems_trace_sig*
+rtems_trace_signatures (const uint32_t index)
+{
+  return &__rtld_trace_signatures[index];
+}
+
+bool
+rtems_trace_enable_set(const uint32_t index)
+{
+  return (__rtld_trace_enables[index / 32] & (1 << (index & (32 - 1)))) != 0 ? true : false;
+}
+
+bool
+rtems_trace_trigger_set(const uint32_t index)
+{
+  return (__rtld_trace_triggers[index / 32] & (1 << (index & (32 - 1)))) != 0 ? true : false;
+}
+
+bool
+rtems_trace_buffering_present (void)
+{
+  return __rtld_tbg_present;
+}
+
+uint32_t
+rtems_trace_buffering_mode (void)
+{
+  return __rtld_tbg_mode;
+}
+
+uint32_t
+rtems_trace_buffering_buffer_size (void)
+{
+  return __rtld_tbg_buffer_size;
+}
+
+uint32_t*
+rtems_trace_buffering_buffer (void)
+{
+  return &__rtld_tbg_buffer[0];
+}
+
+uint32_t
+rtems_trace_buffering_buffer_in (void)
+{
+  rtems_interrupt_lock_context lcontext;
+  uint32_t                     in;
+  rtems_interrupt_lock_acquire(&__rtld_tbg_lock, &lcontext);
+  in = __rtld_tbg_buffer_in;
+  rtems_interrupt_lock_release(&__rtld_tbg_lock, &lcontext);
+  return in;
+}
+
+bool
+rtems_trace_buffering_finished (void)
+{
+  rtems_interrupt_lock_context lcontext;
+  bool                         finished;
+  rtems_interrupt_lock_acquire(&__rtld_tbg_lock, &lcontext);
+  finished = __rtld_tbg_finished;
+  rtems_interrupt_lock_release(&__rtld_tbg_lock, &lcontext);
+  return finished;
+}
+
+bool
+rtems_trace_buffering_triggered (void)
+{
+  rtems_interrupt_lock_context lcontext;
+  bool                         triggered;
+  rtems_interrupt_lock_acquire(&__rtld_tbg_lock, &lcontext);
+  triggered = __rtld_tbg_triggered;
+  rtems_interrupt_lock_release(&__rtld_tbg_lock, &lcontext);
+  return triggered;
+}
+
+void
+rtems_trace_buffering_start (void)
+{
+  rtems_interrupt_lock_context lcontext;
+  rtems_interrupt_lock_acquire(&__rtld_tbg_lock, &lcontext);
+  __rtld_tbg_triggered = false;
+  __rtld_tbg_buffer_in = 0;
+  __rtld_tbg_finished = false;
+  rtems_interrupt_lock_release(&__rtld_tbg_lock, &lcontext);
+}
+
+void
+rtems_trace_buffering_stop (void)
+{
+  rtems_interrupt_lock_context lcontext;
+  rtems_interrupt_lock_acquire(&__rtld_tbg_lock, &lcontext);
+  __rtld_tbg_finished = true;
+  rtems_interrupt_lock_release(&__rtld_tbg_lock, &lcontext);
+}
+
+void
+rtems_trace_buffering_resume (void)
+{
+  rtems_interrupt_lock_context lcontext;
+  rtems_interrupt_lock_acquire(&__rtld_tbg_lock, &lcontext);
+  __rtld_tbg_finished = false;
+  rtems_interrupt_lock_release(&__rtld_tbg_lock, &lcontext);
+}