push/pop all registers when handling interrupt from kernel

1 files changed, 6 insertions, 0 deletions

diff --git a/defs.h b/defs.h
index 91a997d..2a6c47a 100644
--- a/defs.h
+++ b/defs.h
@@ -191,5 +191,11 @@ int             copyout(pagetable_t, uint64, char *, uint64);
 int             copyin(pagetable_t, char *, uint64, uint64);
 int             copyinstr(pagetable_t pagetable, char *dst, uint64 srcva, uint64 max);
 
+// plic.c
+void            plicinit(void);
+uint64          plic_pending(void);
+int             plic_claim(void);
+void            plic_complete(int);
+
 // number of elements in fixed-size array
 #define NELEM(x) (sizeof(x)/sizeof((x)[0]))