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minor performance improvements, optional mouse, mouse cursor now drawn
[dosdemo]
/
src
/
util.h
diff --git
a/src/util.h
b/src/util.h
index
ce43bbe
..
b305d78
100644
(file)
--- a/
src/util.h
+++ b/
src/util.h
@@
-52,6
+52,11
@@
void debug_break(void);
void halt(void);
#pragma aux halt = "hlt";
void halt(void);
#pragma aux halt = "hlt";
+
+void memset16(void *ptr, int val, int count);
+#pragma aux memset16 = \
+ "rep stosw" \
+ parm[edi][eax][ecx];
#endif
#ifdef __GNUC__
#endif
#ifdef __GNUC__
@@
-78,6
+83,10
@@
void halt(void);
#define halt() \
asm volatile("hlt")
#define halt() \
asm volatile("hlt")
+
+#define memset16(ptr, val, count) asm volatile ( \
+ "rep stosw\n\t" \
+ :: "D"(ptr), "a"(val), "c"(count))
#endif
#ifdef _MSC_VER
#endif
#ifdef _MSC_VER
@@
-106,6
+115,16
@@
void halt(void);
do { \
__asm { int 3 } \
} while(0)
do { \
__asm { int 3 } \
} while(0)
+
+#define memset16(ptr, val, count) \
+ do { \
+ __asm { \
+ mov edi, ptr \
+ mov ecx, count \
+ mov eax, val \
+ rep stosw \
+ } \
+ } while(0)
#endif
#endif /* UTIL_H_ */
#endif
#endif /* UTIL_H_ */