modified copyright tags

[palacios.git] / palacios / include / geekos / vmm_stubs.h

diff --git a/palacios/include/geekos/vmm_stubs.h b/palacios/include/geekos/vmm_stubs.h
index 06e7189..aedb3e3 100644 (file)
--- a/palacios/include/geekos/vmm_stubs.h
+++ b/palacios/include/geekos/vmm_stubs.h
@@ -1,3 +1,6 @@
+/* (c) 2008, Jack Lange <jarusl@cs.northwestern.edu> */
+/* (c) 2008, The V3VEE Project <http://www.v3vee.org> */
+
 #ifndef __VMM_STUBS_H
 #define __VMM_STUBS_H
 
@@ -6,6 +9,11 @@
 #include <geekos/malloc.h>
 
 
+struct guest_info;
+
+
+
+
 void * Allocate_VMM_Pages(int num_pages);
 void Free_VMM_Page(void * page);
 
@@ -14,4 +22,73 @@ void VMM_Free(void * addr);
 
 void * Identity(void *addr);
 
+
+
+
+int hook_irq_stub(struct guest_info * info, int irq);
+int ack_irq(int irq);
+
+
+
+int geekos_hook_interrupt_new(uint_t irq, void *opaque);
+
+
+unsigned int get_cpu_khz();
+
+void Init_Stubs();
+
+
+
+
+
+
+
+
+
+
+#if 0
+
+# define do_div(n,base) ({                                     \
+       uint32_t __base = (base);                               \
+       uint32_t __rem;                                         \
+       __rem = ((uint64_t)(n)) % __base;                       \
+       (n) = ((uint64_t)(n)) / __base;                         \
+       __rem;                                                  \
+ })
+
+#else
+
+/*
+ * do_div() is NOT a C function. It wants to return
+ * two values (the quotient and the remainder), but
+ * since that doesn't work very well in C, what it
+ * does is:
+ *
+ * - modifies the 64-bit dividend _in_place_
+ * - returns the 32-bit remainder
+ *
+ * This ends up being the most efficient "calling
+ * convention" on x86.
+ */
+#define do_div(n,base) ({                                   \
+      unsigned long __upper, __low, __high, __mod, __base;   \
+      __base = (base);                                      \
+      asm("":"=a" (__low), "=d" (__high):"A" (n));          \
+      __upper = __high;                                             \
+      if (__high) {                                         \
+       __upper = __high % (__base);                         \
+       __high = __high / (__base);                          \
+      }                                                                        \
+      asm("divl %2":"=a" (__low), "=d" (__mod):"rm" (__base), "0" (__low), "1" (__upper)); \
+      asm("":"=A" (n):"a" (__low),"d" (__high));                       \
+      __mod;                                                           \
+    })
+
+#endif
+
+
+
+
+
+
 #endif