1 files changed, 41 insertions, 0 deletions
diff --git a/qemu/hw/i386/acpi-dsdt-dbug.dsl b/qemu/hw/i386/acpi-dsdt-dbug.dsl
new file mode 100644
index 000000000..86230f75a
--- /dev/null
+++ b/qemu/hw/i386/acpi-dsdt-dbug.dsl
@@ -0,0 +1,41 @@
+/*
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+
+ * This program 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, see <http://www.gnu.org/licenses/>.
+ */
+
+/****************************************************************
+ * Debugging
+ ****************************************************************/
+
+Scope(\) {
+    /* Debug Output */
+    OperationRegion(DBG, SystemIO, 0x0402, 0x01)
+    Field(DBG, ByteAcc, NoLock, Preserve) {
+        DBGB,   8,
+    }
+
+    /* Debug method - use this method to send output to the QEMU
+     * BIOS debug port.  This method handles strings, integers,
+     * and buffers.  For example: DBUG("abc") DBUG(0x123) */
+    Method(DBUG, 1) {
+        ToHexString(Arg0, Local0)
+        ToBuffer(Local0, Local0)
+        Subtract(SizeOf(Local0), 1, Local1)
+        Store(Zero, Local2)
+        While (LLess(Local2, Local1)) {
+            Store(DerefOf(Index(Local0, Local2)), DBGB)
+            Increment(Local2)
+        }
+        Store(0x0A, DBGB)
+    }
+}