init

src/lib.c

@@ -0,0 +1,59 @@
+#include "lib.h"
+
+size_t time_flush(void (* addr)(void))
+{
+    uint64_t start, end, delta;
+    uint64_t lo, hi;
+    asm volatile ("LFENCE");
+    asm volatile ("RDTSC": "=a" (lo), "=d" (hi));
+    start = (hi<<32) | lo;
+    asm volatile ("LFENCE");
+
+    asm volatile ("CLFLUSH 0(%0)\n":: "c" (addr): "rax");
+
+    asm volatile ("MFENCE");
+    asm volatile ("RDTSC": "=a" (lo), "=d" (hi));
+    end = (hi<<32) | lo;
+    asm volatile ("LFENCE");
+    delta = end - start;
+    return delta;
+
+}
+
+size_t time_maccess(void (* addr)(void))
+{
+    uint64_t start, end, delta;
+    uint64_t lo, hi;
+    asm volatile ("LFENCE");
+    asm volatile ("RDTSC": "=a" (lo), "=d" (hi));
+    start = (hi<<32) | lo;
+    asm volatile ("LFENCE");
+
+    asm volatile ("movq (%0), %%rax\n"
+    :
+    : "c" (addr)
+    : "rax");
+
+    asm volatile ("LFENCE");
+    asm volatile ("RDTSC": "=a" (lo), "=d" (hi));
+    end = (hi<<32) | lo;
+    asm volatile ("LFENCE");
+    delta = end - start;
+    return delta;
+}
+
+void maccess(void* p)
+{
+    asm volatile ("movq (%0), %%rax\n"
+    :
+    : "c" (p)
+    : "rax");
+}
+
+void flush(void* p)
+{
+    asm volatile ("clflush 0(%0)\n"
+    :
+    : "c" (p)
+    : "rax");
+}