X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fthreads%2Fintr-stubs.h;h=3f2db7e1870d5d0401ef63dd821b73b878a34804;hb=beddf03109baecfdda77c6e4478ac975e49faf73;hp=b1f503943a852b23909d569c76756e9731cd47ec;hpb=447755c02e674e65801fbb783823009e32458753;p=pintos-anon

diff --git a/src/threads/intr-stubs.h b/src/threads/intr-stubs.h
index b1f5039..3f2db7e 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
 
-extern void (*const 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 */