spinlocks using gcc intrinsics

push_off() / pop_off()
set up per-hart plic stuff so all harts get device interrupts

1 files changed, 6 insertions, 4 deletions

diff --git a/trap.c b/trap.c
index 693c596..929f761 100644
--- a/trap.c
+++ b/trap.c
@@ -19,12 +19,14 @@ extern int devintr();
 void
 trapinit(void)
 {
-  int i;
+  initlock(&tickslock, "time");
+}
 
-  // set up to take exceptions and traps while in the kernel.
+// set up to take exceptions and traps while in the kernel.
+void
+trapinithart(void)
+{
   w_stvec((uint64)kernelvec);
-
-  initlock(&tickslock, "time");
 }
 
 //