+/* (c) 2008, Jack Lange <jarusl@cs.northwestern.edu> */
+/* (c) 2008, The V3VEE Project <http://www.v3vee.org> */
+
#ifndef __VMM_UTIL_H
#define __VMM_UTIL_H
+#ifdef __V3VEE__
+
#include <palacios/vmm_types.h>
void PrintTraceHex(unsigned char x);
-
+void PrintTraceLL(ullong_t num);
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; \
+ })
+
+
+
+/* This divides two 64bit unsigned ints
+ * The previous version only allows 32 bit bases(?)...
+ *
+ * NOTE: This absolutely sucks... there has to be a better way....
+ */
+#define do_divll(n, base) ({ \
+ ullong_t __rem = 0; \
+ ullong_t __num = 0; \
+ while (n > base) { \
+ __num++; \
+ n -= base; \
+ } \
+ __rem = n; \
+ n = __num; \
+ __rem; \
+ })
+
+#endif
+
+
+
+
+
+#endif // ! __V3VEE__
+
#endif
