add directory Linux-0.98

Linux-0.98/Yggdrasil-0.98.3/usr/include/asm/segment.h

@@ -0,0 +1,99 @@
+extern inline unsigned char get_fs_byte(const char * addr)
+{
+	unsigned register char _v;
+
+	__asm__ ("movb %%fs:%1,%0":"=q" (_v):"m" (*addr));
+	return _v;
+}
+
+extern inline unsigned short get_fs_word(const unsigned short *addr)
+{
+	unsigned short _v;
+
+	__asm__ ("movw %%fs:%1,%0":"=r" (_v):"m" (*addr));
+	return _v;
+}
+
+extern inline unsigned long get_fs_long(const unsigned long *addr)
+{
+	unsigned long _v;
+
+	__asm__ ("movl %%fs:%1,%0":"=r" (_v):"m" (*addr)); \
+	return _v;
+}
+
+extern inline void put_fs_byte(char val,char *addr)
+{
+__asm__ ("movb %0,%%fs:%1"::"q" (val),"m" (*addr));
+}
+
+extern inline void put_fs_word(short val,short * addr)
+{
+__asm__ ("movw %0,%%fs:%1"::"r" (val),"m" (*addr));
+}
+
+extern inline void put_fs_long(unsigned long val,unsigned long * addr)
+{
+__asm__ ("movl %0,%%fs:%1"::"r" (val),"m" (*addr));
+}
+
+extern inline void memcpy_tofs(void * to, const void * from, unsigned long n)
+{
+__asm__("cld\n\t"
+	"push %%es\n\t"
+	"push %%fs\n\t"
+	"pop %%es\n\t"
+	"testb $1,%%cl\n\t"
+	"je 1f\n\t"
+	"movsb\n"
+	"1:\ttestb $2,%%cl\n\t"
+	"je 2f\n\t"
+	"movsw\n"
+	"2:\tshrl $2,%%ecx\n\t"
+	"rep ; movsl\n\t"
+	"pop %%es"
+	::"c" (n),"D" ((long) to),"S" ((long) from)
+	:"cx","di","si");
+}
+
+extern inline void memcpy_fromfs(void * to, const void * from, unsigned long n)
+{
+__asm__("cld\n\t"
+	"testb $1,%%cl\n\t"
+	"je 1f\n\t"
+	"fs ; movsb\n"
+	"1:\ttestb $2,%%cl\n\t"
+	"je 2f\n\t"
+	"fs ; movsw\n"
+	"2:\tshrl $2,%%ecx\n\t"
+	"rep ; fs ; movsl"
+	::"c" (n),"D" ((long) to),"S" ((long) from)
+	:"cx","di","si");
+}
+
+/*
+ * Someone who knows GNU asm better than I should double check the followig.
+ * It seems to work, but I don't know if I'm doing something subtly wrong.
+ * --- TYT, 11/24/91
+ * [ nothing wrong here, Linus: I just changed the ax to be any reg ]
+ */
+
+extern inline unsigned long get_fs() 
+{
+	unsigned short _v;
+	__asm__("mov %%fs,%0":"=r" (_v):);
+	return _v;
+}
+
+extern inline unsigned long get_ds() 
+{
+	unsigned short _v;
+	__asm__("mov %%ds,%0":"=r" (_v):);
+	return _v;
+}
+
+extern inline void set_fs(unsigned long val)
+{
+	__asm__ __volatile__("mov %0,%%fs"::"r" ((unsigned short) val));
+}
+