1 files changed, 50 insertions, 0 deletions
diff --git a/risu_loongarch64.c b/risu_loongarch64.c
new file mode 100644
index 0000000..b6c59cf
--- /dev/null
+++ b/risu_loongarch64.c
@@ -0,0 +1,50 @@
+/******************************************************************************
+ * Copyright (c) 2022 Loongson Technology Corporation Limited
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     based on Peter Maydell's risu_arm.c
+ *****************************************************************************/
+
+#include <asm/types.h>
+#include <signal.h>
+#include <asm/ucontext.h>
+
+#include "risu.h"
+
+void advance_pc(void *vuc)
+{
+    struct ucontext *uc = vuc;
+    uc->uc_mcontext.sc_pc += 4;
+}
+
+void set_ucontext_paramreg(void *vuc, uint64_t value)
+{
+    struct ucontext *uc = vuc;
+    uc->uc_mcontext.sc_regs[4] = value;
+}
+
+uint64_t get_reginfo_paramreg(struct reginfo *ri)
+{
+    return ri->regs[4];
+}
+
+RisuOp get_risuop(struct reginfo *ri)
+{
+    /* Return the risuop we have been asked to do
+     * (or OP_SIGILL if this was a SIGILL for a non-risuop insn)
+     */
+    uint32_t insn = ri->faulting_insn;
+    uint32_t op = insn & 0xf;
+    uint32_t key = insn & ~0xf;
+    uint32_t risukey = 0x000001f0;
+    return (key != risukey) ? OP_SIGILL : op;
+}
+
+uintptr_t get_pc(struct reginfo *ri)
+{
+   return ri->pc;
+}