Garbage

1 files changed, 27 insertions, 0 deletions

diff --git a/arch/riscv/sbi.c b/arch/riscv/sbi.c
new file mode 100644
index 0000000..e255ecf
--- /dev/null
+++ b/arch/riscv/sbi.c
@@ -0,0 +1,27 @@
+#include <sbi.h>
+
+struct sbiret sbi_ecall(int ext, int fid,
+		unsigned long arg0, unsigned long arg1, unsigned long arg2,
+		unsigned long arg3, unsigned long arg4, unsigned long arg5)
+{
+	struct sbiret ret;
+
+	register unsigned long a0 asm("a0") = arg0;
+	register unsigned long a1 asm("a1") = arg1;
+	register unsigned long a2 asm("a2") = arg2;
+	register unsigned long a3 asm("a3") = arg3;
+	register unsigned long a4 asm("a4") = arg4;
+	register unsigned long a5 asm("a5") = arg5;
+	register unsigned long a6 asm("a6") = fid;
+	register unsigned long a7 asm("a7") = ext;
+
+	asm volatile ("ecall"
+			: "+r" (a0), "+r" (a1)
+			: "r" (a2), "r" (a3), "r" (a4), "r" (a5), "r" (a6), "r" (a7)
+			: "memory");
+
+	ret.error = a0;
+	ret.value = a1;
+
+	return ret;
+}