Squash commits for public release

kernel/include/platform/riscv64/syscalls/params.h

@@ -0,0 +1,17 @@
+#ifndef _KERNEL_PLATFORM_RISCV64_SYSCALLS_PARAMS_H
+#define _KERNEL_PLATFORM_RISCV64_SYSCALLS_PARAMS_H
+
+#include <platform/riscv64/tasking/trapframe.h>
+
+#define SYSCALL_ID(tf) (tf->a7)
+#define SYSCALL_VAR1(tf) (tf->a0)
+#define SYSCALL_VAR2(tf) (tf->a1)
+#define SYSCALL_VAR3(tf) (tf->a2)
+#define SYSCALL_VAR4(tf) (tf->a3)
+#define SYSCALL_VAR5(tf) (tf->a4)
+#define return_val (tf->a0)
+#define return_with_val(val) \
+    (return_val = val);      \
+    return
+
+#endif // _KERNEL_PLATFORM_RISCV64_SYSCALLS_PARAMS_H