1 files changed, 86 insertions, 0 deletions
diff --git a/newlib/libc/machine/spu/spu_timer_free.c b/newlib/libc/machine/spu/spu_timer_free.c
new file mode 100644
index 000000000..9fb3e0cda
--- /dev/null
+++ b/newlib/libc/machine/spu/spu_timer_free.c
@@ -0,0 +1,86 @@
+/*
+(C) Copyright IBM Corp. 2008
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+* 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.
+* Neither the name of IBM nor the names of its contributors may be
+used to endorse or promote products derived from this software without
+specific prior written permission.
+
+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.
+*/
+
+/* SPU timer free library service.  */
+#include <spu_timer.h>
+#include "spu_timer_internal.h"
+
+
+/* Frees an allocated timer. The timer must be in the stopped state for this
+   to succeed. Maybe be called:
+    * after allocated, before it's started
+    * after it's been explicitly stopped
+   Returns 0 on success, timer sucessfully deallocated. Returns <0 on failure
+    * SPU_TIMER_INVALID_ID - id out of range
+    * SPU_TIMER_ERR_FREE - id in free state
+    * SPU_TIMER_ERR_ACTIVE - id in handled or active state  */
+int
+spu_timer_free (int id)
+{
+  spu_timer_t *t, **pn;
+  unsigned was_enabled;
+
+  if (id < 0 || id >= SPU_TIMER_NTIMERS)
+    return SPU_TIMER_ERR_INVALID_ID;
+
+  if (__spu_timers[id].state == SPU_TIMER_STOPPED)
+    {
+
+      was_enabled = spu_readch (SPU_RdMachStat) & 0x1;
+      spu_idisable ();
+
+      t = __spu_timers_stopped;
+      pn = &__spu_timers_stopped;
+
+      while (t && (t->id != id))
+	{
+	  pn = &t->next;
+	  t = t->next;
+	}
+#ifdef SPU_TIMER_DEBUG
+      if (!t)
+	ABORT ();
+#endif
+      *pn = t->next;
+
+      /* Add timer back to free list (mask).  */
+      __spu_timers_avail |= (1 << (id));
+      __spu_timers[id].state = SPU_TIMER_FREE;
+
+      if (__likely (was_enabled))
+	spu_ienable ();
+
+      return 0;
+    }
+
+  /* Handle invalid states.  */
+  return (__spu_timers[id].state == SPU_TIMER_FREE) ?
+	  SPU_TIMER_ERR_FREE : SPU_TIMER_ERR_ACTIVE;
+}