Index: head/sys/cddl/dev/dtrace/riscv/dtrace_isa.c
===================================================================
--- head/sys/cddl/dev/dtrace/riscv/dtrace_isa.c
+++ head/sys/cddl/dev/dtrace/riscv/dtrace_isa.c
@@ -85,9 +85,9 @@
 
 	__asm __volatile("mv %0, sp" : "=&r" (sp));
 
-	state.fp = (uint64_t)__builtin_frame_address(0);
+	state.fp = (uintptr_t)__builtin_frame_address(0);
 	state.sp = sp;
-	state.pc = (uint64_t)dtrace_getpcstack;
+	state.pc = (uintptr_t)dtrace_getpcstack;
 
 	while (depth < pcstack_limit) {
 		if (unwind_frame(&state))
@@ -266,9 +266,9 @@
 
 	__asm __volatile("mv %0, sp" : "=&r" (sp));
 
-	state.fp = (uint64_t)__builtin_frame_address(0);
+	state.fp = (uintptr_t)__builtin_frame_address(0);
 	state.sp = sp;
-	state.pc = (uint64_t)dtrace_getstackdepth;
+	state.pc = (uintptr_t)dtrace_getstackdepth;
 
 	do {
 		done = unwind_frame(&state);