X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fthreads%2Fintr-stubs.h;h=116b637e3cd0b7560f4a5d3dae57b475f80ba0db;hb=5a121c17dc3088074ff51b99dbe353b25e7adff1;hp=5ff91649a6fcdfd2c322acdba277556e33de3c0e;hpb=1824e4d39b4f042474d29ac91ee59b326ab00da1;p=pintos-anon

diff --git a/src/threads/intr-stubs.h b/src/threads/intr-stubs.h
index 5ff9164..116b637 100644
--- a/src/threads/intr-stubs.h
+++ b/src/threads/intr-stubs.h
@@ -1,9 +1,20 @@
-#ifndef HEADER_INTR_STUBS_H
-#define HEADER_INTR_STUBS_H
+#ifndef THREADS_INTR_STUBS_H
+#define THREADS_INTR_STUBS_H
 
-extern void (*intr_stubs[256]) (void);
+/* Interrupt stubs.
 
-void intr_entry (void);
+   These are little snippets of code in intr-stubs.S, one for
+   each of the 256 possible x86 interrupts.  They just push the
+   interrupt vector number on the stack (and, for interrupts that
+   don't have an error code, a fake error code), then jump to
+   intr_entry().
+
+   This array points to each of the interrupt stub entry points
+   so that intr_init() can easily find them. */
+typedef void intr_stub_func (void);
+extern intr_stub_func *intr_stubs[256];
+
+/* Interrupt return path. */
 void intr_exit (void);
 
-#endif /* intr-stubs.h */
+#endif /* threads/intr-stubs.h */