xen/riscv: introduce regs.h

Signed-off-by: Oleksii Kurochko <oleksii.kurochko@gmail.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
------
Changes in V4:
 - add Acked-by: Jan Beulich <jbeulich@suse.com>
 - s/BUG()/BUG_ON("unimplemented")

diff --git a/xen/arch/riscv/include/asm/regs.h b/xen/arch/riscv/include/asm/regs.h
new file mode 100644 (file)
index 0000000..c70ea2a
--- /dev/null
+++ b/xen/arch/riscv/include/asm/regs.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ARM_RISCV_REGS_H__
+#define __ARM_RISCV_REGS_H__
+
+#ifndef __ASSEMBLY__
+
+#include <xen/bug.h>
+
+#define hyp_mode(r)     (0)
+
+struct cpu_user_regs;
+
+static inline bool guest_mode(const struct cpu_user_regs *r)
+{
+    BUG_ON("unimplemented");
+}
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __ARM_RISCV_REGS_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */