1 files changed, 77 insertions, 0 deletions
diff --git a/gcell/src/lib/runtime/spu/gc_logging.c b/gcell/src/lib/runtime/spu/gc_logging.c
new file mode 100644
index 0000000000..65a5375040
--- /dev/null
+++ b/gcell/src/lib/runtime/spu/gc_logging.c
@@ -0,0 +1,77 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2008 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio 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.
+ * 
+ * GNU Radio 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.
+ * 
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <gc_logging.h>
+#include <spu_intrinsics.h>
+#include <spu_mfcio.h>
+#include <gc_spu_args.h>
+
+static gc_eaddr_t     log_base_ea;	// base address of log entries in EA
+static uint32_t	      log_idx_mask;	// nentries - 1
+static uint32_t	      log_idx;		// current log entry index
+static uint32_t	      log_seqno;
+
+static int 	      log_tags;		// two consecutive tags
+static int	      tmp_buffer_busy;	// bitmask: buffer busy state
+static int	      tmp_buffer_idx;	// 0 or 1
+static gc_log_entry_t tmp_buffer[2];
+
+void
+_gc_log_init(gc_log_t info)
+{
+  spu_write_decrementer(~0);
+
+  log_base_ea = info.base;
+  log_idx_mask = info.nentries - 1;
+  log_idx = 0;
+  log_seqno = 0;
+
+  log_tags = mfc_multi_tag_reserve(2);
+  tmp_buffer_busy = 0;
+  tmp_buffer_idx = 0;
+
+  gc_log_write0(GCL_SS_SYS, 0);
+}
+
+void
+_gc_log_write(gc_log_entry_t entry)
+{
+  if (log_base_ea == 0)
+    return;
+
+  entry.seqno = log_seqno++;
+  entry.timestamp = spu_read_decrementer();
+
+  if (tmp_buffer_busy & (1 << tmp_buffer_idx)){
+    mfc_write_tag_mask(1 << (log_tags + tmp_buffer_idx));
+    mfc_read_tag_status_all();
+  }
+
+  tmp_buffer[tmp_buffer_idx] = entry;	// save local copy
+
+  mfc_put(&tmp_buffer[tmp_buffer_idx],
+	  log_base_ea + log_idx * sizeof(entry), sizeof(entry),
+	  log_tags + tmp_buffer_idx, 0, 0);
+
+  tmp_buffer_busy |= (1 << tmp_buffer_idx);
+  tmp_buffer_idx ^= 0x1;
+  log_idx = (log_idx + 1) & log_idx_mask;
+}