copy riscv support from regress/sys/kern/stackpivot/pivot.h

diff --git a/regress/usr.bin/lastcomm/pivot.h b/regress/usr.bin/lastcomm/pivot.h
index eec5352..fe87baa 100644 (file)
--- a/regress/usr.bin/lastcomm/pivot.h
+++ b/regress/usr.bin/lastcomm/pivot.h
@@ -14,6 +14,8 @@ static void pivot(void *newstack) {
     asm("mr %%r1, %0; ld %%r3, 0(%%r1); mtlr %%r3; blr;" ::"r"(newstack));
 #elif defined(__powerpc__)
     asm("mr %%r1, %0; lwz %%r3, 0(%%r1); mtlr %%r3; blr;" ::"r"(newstack));
+#elif defined(__riscv)
+    asm("mv sp, %0; ld ra, 0(sp); jr ra" ::"r"(newstack));
 #endif
 }