X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Kernel%2Farch%2Fx86_64%2Flib.c;h=e3669c045978c77dbc637f62cb63d8d90206b31d;hb=a79ebcb3a2e206251f44e99376ec2ed6c2bacc63;hp=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391;hpb=3234a52a913609230ffc140c27542d421bb1b7d3;p=tpg%2Facess2.git

diff --git a/Kernel/arch/x86_64/lib.c b/Kernel/arch/x86_64/lib.c
index e69de29b..e3669c04 100644
--- a/Kernel/arch/x86_64/lib.c
+++ b/Kernel/arch/x86_64/lib.c
@@ -0,0 +1,93 @@
+/*
+ */
+#include <acess.h>
+#include <arch.h>
+
+// === CODE ===
+
+void outb(Uint16 Port, Uint8 Data)
+{
+	__asm__ __volatile__ ("outb %%al, %%dx"::"d"(Port),"a"(Data));
+}
+void outw(Uint16 Port, Uint16 Data)
+{
+	__asm__ __volatile__ ("outw %%ax, %%dx"::"d"(Port),"a"(Data));
+}
+void outd(Uint16 Port, Uint32 Data)
+{
+	__asm__ __volatile__ ("outl %%eax, %%dx"::"d"(Port),"a"(Data));
+}
+Uint8 inb(Uint16 Port)
+{
+	Uint8	ret;
+	__asm__ __volatile__ ("inb %%dx, %%al":"=a"(ret):"d"(Port));
+	return ret;
+}
+Uint16 inw(Uint16 Port)
+{
+	Uint16	ret;
+	__asm__ __volatile__ ("inw %%dx, %%ax":"=a"(ret):"d"(Port));
+	return ret;
+}
+Uint32 ind(Uint16 Port)
+{
+	Uint32	ret;
+	__asm__ __volatile__ ("inl %%dx, %%eax":"=a"(ret):"d"(Port));
+	return ret;
+}
+
+// === Endianness ===
+Uint32 BigEndian32(Uint32 Value)
+{
+	Uint32	ret;
+	ret = (Value >> 24);
+	ret |= ((Value >> 16) & 0xFF) << 8;
+	ret |= ((Value >>  8) & 0xFF) << 16;
+	ret |= ((Value >>  0) & 0xFF) << 24;
+	return ret;
+}
+
+Uint16 BigEndian16(Uint16 Value)
+{
+	return	(Value>>8)|(Value<<8);
+}
+
+// === Memory Manipulation ===
+void *memcpy(void *__dest, const void *__src, size_t __count)
+{
+	if( ((tVAddr)__dest & 7) != ((tVAddr)__src & 7) )
+		__asm__ __volatile__ ("rep movsb" : : "D"(__dest),"S"(__src),"c"(__count));
+	else {
+		const Uint8	*src = __src;
+		Uint8	*dst = __dest;
+		while( (tVAddr)src & 7 && __count ) {
+			*dst++ = *src++;
+			__count --;
+		}
+
+		__asm__ __volatile__ ("rep movsq" : : "D"(dst),"S"(src),"c"(__count/8));
+		src += __count & ~7;
+		dst += __count & ~7;
+		__count = __count & 7;
+		while( __count-- )
+			*dst++ = *src++;
+	}
+	return __dest;
+}
+
+void *memset(void *__dest, int __val, size_t __count)
+{
+	if( __val != 0 || ((tVAddr)__dest & 7) != 0 )
+	        __asm__ __volatile__ ("rep stosb" : : "D"(__dest),"a"(__val),"c"(__count));
+	else {
+	        Uint8   *dst = __dest;
+
+	        __asm__ __volatile__ ("rep stosq" : : "D"(dst),"a"(0),"c"(__count/8));
+	        dst += __count & ~7;
+	        __count = __count & 7;
+	        while( __count-- )
+	                *dst++ = 0;
+	}
+	return __dest;
+}
+