Palacios Public Git Repository

To checkout Palacios execute

  git clone http://v3vee.org/palacios/palacios.web/palacios.git
This will give you the master branch. You probably want the devel branch or one of the release branches. To switch to the devel branch, simply execute
  cd palacios
  git checkout --track -b devel origin/devel
The other branches are similar.


lot of changes
[palacios.git] / palacios / include / palacios / vmm_util.h
index 323b977..95a0c8e 100644 (file)
@@ -42,4 +42,79 @@ void PrintTraceHex(unsigned char x);
 void PrintTraceMemDump(unsigned char * start, int n);
 
 
+
+
+#define rdtsc(low,high)                                                \
+     __asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high))
+
+#define rdtscl(low)                                            \
+     __asm__ __volatile__("rdtsc" : "=a" (low) : : "edx")
+
+#if defined(__i386__)
+
+#define rdtscll(val)                           \
+     __asm__ __volatile__("rdtsc" : "=A" (val))
+
+#elif defined(__x86_64__)
+
+#define rdtscll(val) do {                                  \
+    unsigned int a,d;                                      \
+    asm volatile("rdtsc" : "=a" (a), "=d" (d));                    \
+    (val) = ((unsigned long)a) | (((unsigned long)d)<<32);  \
+  } while(0)
+
+#endif
+
+
+
+
+
+
+
+
+
+#ifdef __V3_64BIT__
+
+# 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