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authorfishsoupisgood <github@madingley.org>2019-04-29 01:17:54 +0100
committerfishsoupisgood <github@madingley.org>2019-05-27 03:43:43 +0100
commit3f2546b2ef55b661fd8dd69682b38992225e86f6 (patch)
tree65ca85f13617aee1dce474596800950f266a456c /target-openrisc/mmu_helper.c
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Initial import of qemu-2.4.1HEADmaster
Diffstat (limited to 'target-openrisc/mmu_helper.c')
-rw-r--r--target-openrisc/mmu_helper.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/target-openrisc/mmu_helper.c b/target-openrisc/mmu_helper.c
new file mode 100644
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--- /dev/null
+++ b/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