moving on

[eradicate] / src / util.h

diff --git a/src/util.h b/src/util.h
index 6d869eb..c95bcf5 100644 (file)
--- a/src/util.h
+++ b/src/util.h
@@ -30,6 +30,23 @@ static INLINE int32_t cround64(double val)
 extern uint32_t perf_start_count, perf_interval_count;
 
 #ifdef __WATCOMC__
+#ifdef USE_MMX
+void memcpy64(void *dest, void *src, int count);
+#pragma aux memcpy64 = \
+       "cploop:" \
+       "movq mm0, [edx]" \
+       "movq [ebx], mm0" \
+       "add edx, 8" \
+       "add ebx, 8" \
+       "dec ecx" \
+       "jnz cploop" \
+       "emms" \
+       parm[ebx][edx][ecx] \
+       modify[8087];
+#else
+#define memcpy64(dest, src, count)     memcpy(dest, src, (count) << 3)
+#endif
+
 void perf_start(void);
 #pragma aux perf_start = \
        "xor eax, eax" \
@@ -52,6 +69,22 @@ void debug_break(void);
 #endif
 
 #ifdef __GNUC__
+#ifdef USE_MMX
+#define memcpy64(dest, src, count) asm volatile ( \
+       "0:\n\t" \
+       "movq (%1), %%mm0\n\t" \
+       "movq %%mm0, (%0)\n\t" \
+       "add $8, %1\n\t" \
+       "add $8, %0\n\t" \
+       "dec %2\n\t" \
+       "jnz 0b\n\t" \
+       "emms\n\t" \
+       :: "r"(dest), "r"(src), "r"(count) \
+       : "%mm0")
+#else
+#define memcpy64(dest, src, count)     memcpy(dest, src, (count) << 3)
+#endif
+
 #define perf_start()  asm volatile ( \
        "xor %%eax, %%eax\n" \
        "cpuid\n" \