Add qemu 2.4.0

[kvmfornfv.git] / qemu / target-openrisc / mmu_helper.c

diff --git a/qemu/target-openrisc/mmu_helper.c b/qemu/target-openrisc/mmu_helper.c
new file mode 100644 (file)
index 0000000..ee1c6f6
--- /dev/null
+++ b/qemu/target-openrisc/mmu_helper.c
@@ -0,0 +1,42 @@
+/*
+ * OpenRISC MMU helper routines
+ *
+ * Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
+ *                         Zhizhou Zhang <etouzh@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "cpu.h"
+#include "exec/cpu_ldst.h"
+
+#ifndef CONFIG_USER_ONLY
+
+void tlb_fill(CPUState *cs, target_ulong addr, int is_write,
+              int mmu_idx, uintptr_t retaddr)
+{
+    int ret;
+
+    ret = openrisc_cpu_handle_mmu_fault(cs, addr, is_write, mmu_idx);
+
+    if (ret) {
+        if (retaddr) {
+            /* now we have a real cpu fault.  */
+            cpu_restore_state(cs, retaddr);
+        }
+        /* Raise Exception.  */
+        cpu_loop_exit(cs);
+    }
+}
+#endif