patch-1.3.45 linux/include/asm-ppc/segment.h

• Lines: 132
• Date: Sat Nov 25 19:49:06 1995
• Orig file: v1.3.44/linux/include/asm-ppc/segment.h
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.44/linux/include/asm-ppc/segment.h linux/include/asm-ppc/segment.h
@@ -0,0 +1,131 @@
+#ifndef _ASM_PPC_SEGMENT_H
+#define _ASM_PPC_SEGMENT_H
+
+#include <linux/string.h>
+
+#define put_user(x,ptr) __put_user((unsigned long)(x),(ptr),sizeof(*(ptr)))
+#define get_user(ptr) ((__typeof__(*(ptr)))__get_user((ptr),sizeof(*(ptr))))
+
+extern int bad_user_access_length(void);
+
+static inline void __put_user(unsigned long x, void * y, int size)
+{
+	switch (size) {
+		case 1:
+			*(char *) y = x;
+			break;
+		case 2:
+			*(short *) y = x;
+			break;
+		case 4:
+			*(int *) y = x;
+			break;
+		case 8:
+			*(long *) y = x;
+			break;
+		default:
+			bad_user_access_length();
+	}
+}
+
+static inline unsigned long __get_user(const void * y, int size)
+{
+	switch (size) {
+		case 1:
+			return *(unsigned char *) y;
+		case 2:
+			return *(unsigned short *) y;
+		case 4:
+			return *(unsigned int *) y;
+		case 8:
+			return *(unsigned long *) y;
+		default:
+			return bad_user_access_length();
+	}
+}
+
+static inline unsigned char get_user_byte(const char * addr)
+{
+	return *addr;
+}
+
+#define get_fs_byte(addr) get_user_byte((char *)(addr))
+
+static inline unsigned short get_user_word(const short *addr)
+{
+	return *addr;
+}
+
+#define get_fs_word(addr) get_user_word((short *)(addr))
+
+static inline unsigned long get_user_long(const int *addr)
+{
+	return *addr;
+}
+
+#define get_fs_long(addr) get_user_long((int *)(addr))
+
+static inline unsigned long get_user_quad(const long *addr)
+{
+	return *addr;
+}
+
+#define get_fs_quad(addr) get_user_quad((long *)(addr))
+
+static inline void put_user_byte(char val,char *addr)
+{
+	*addr = val;
+}
+
+#define put_fs_byte(x,addr) put_user_byte((x),(char *)(addr))
+
+static inline void put_user_word(short val,short * addr)
+{
+	*addr = val;
+}
+
+#define put_fs_word(x,addr) put_user_word((x),(short *)(addr))
+
+static inline void put_user_long(unsigned long val,int * addr)
+{
+	*addr = val;
+}
+
+#define put_fs_long(x,addr) put_user_long((x),(int *)(addr))
+
+static inline void put_user_quad(unsigned long val,long * addr)
+{
+	*addr = val;
+}
+
+#define put_fs_quad(x,addr) put_user_quad((x),(long *)(addr))
+
+#define memcpy_fromfs(to, from, n) memcpy((to),(from),(n))
+
+#define memcpy_tofs(to, from, n) memcpy((to),(from),(n))
+
+/*
+ * For segmented architectures, these are used to specify which segment
+ * to use for the above functions.
+ *
+ * The powerpc is not segmented, so these are just dummies.
+ */
+
+#define KERNEL_DS 0
+#define USER_DS 1
+
+static inline unsigned long get_fs(void)
+{
+	return 0;
+}
+
+static inline unsigned long get_ds(void)
+{
+	return 0;
+}
+
+static inline void set_fs(unsigned long val)
+{
+}
+
+#endif /* _ASM_SEGMENT_H */