Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 165 insertions, 0 deletions

diff --git a/include/asm-v850/uaccess.h b/include/asm-v850/uaccess.h
new file mode 100644
index 00000000000..4386cfc6a8d
--- /dev/null
+++ b/include/asm-v850/uaccess.h
@@ -0,0 +1,165 @@
+#ifndef __V850_UACCESS_H__
+#define __V850_UACCESS_H__
+
+/*
+ * User space memory access functions
+ */
+
+#include <linux/errno.h>
+#include <linux/string.h>
+
+#include <asm/segment.h>
+#include <asm/machdep.h>
+
+#define VERIFY_READ	0
+#define VERIFY_WRITE	1
+
+extern inline int access_ok (int type, const void *addr, unsigned long size)
+{
+	/* XXX I guess we should check against real ram bounds at least, and
+	   possibly make sure ADDR is not within the kernel.
+	   For now we just check to make sure it's not a small positive
+	   or negative value, as that will at least catch some kinds of
+	   error.  In particular, we make sure that ADDR's not within the
+	   interrupt vector area, which we know starts at zero, or within the
+	   peripheral-I/O area, which is located just _before_ zero.  */
+	unsigned long val = (unsigned long)addr;
+	return val >= (0x80 + NUM_CPU_IRQS*16) && val < 0xFFFFF000;
+}
+
+/* this function will go away soon - use access_ok() instead */
+extern inline int __deprecated verify_area (int type, const void *addr, unsigned long size)
+{
+	return access_ok (type, addr, size) ? 0 : -EFAULT;
+}
+
+/*
+ * The exception table consists of pairs of addresses: the first is the
+ * address of an instruction that is allowed to fault, and the second is
+ * the address at which the program should continue.  No registers are
+ * modified, so it is entirely up to the continuation code to figure out
+ * what to do.
+ *
+ * All the routines below use bits of fixup code that are out of line
+ * with the main instruction path.  This means when everything is well,
+ * we don't even have to jump over them.  Further, they do not intrude
+ * on our cache or tlb entries.
+ */
+
+struct exception_table_entry
+{
+	unsigned long insn, fixup;
+};
+
+/* Returns 0 if exception not found and fixup otherwise.  */
+extern unsigned long search_exception_table (unsigned long);
+
+
+/*
+ * These are the main single-value transfer routines.  They automatically
+ * use the right size if we just have the right pointer type.
+ */
+
+extern int bad_user_access_length (void);
+
+#define __get_user(var, ptr)						      \
+  ({									      \
+	  int __gu_err = 0;						      \
+	  typeof(*(ptr)) __gu_val = 0;					      \
+	  switch (sizeof (*(ptr))) {					      \
+	  case 1:							      \
+	  case 2:							      \
+	  case 4:							      \
+		  __gu_val = *(ptr);					      \
+		  break;						      \
+	  case 8:							      \
+		  memcpy(&__gu_val, ptr, sizeof(__gu_val));		      \
+		  break;						      \
+	  default:							      \
+		  __gu_val = 0;						      \
+		  __gu_err = __get_user_bad ();				      \
+		  break;						      \
+	  }								      \
+	  (var) = __gu_val;						      \
+	  __gu_err;							      \
+  })
+#define __get_user_bad()	(bad_user_access_length (), (-EFAULT))
+
+#define __put_user(var, ptr)						      \
+  ({									      \
+	  int __pu_err = 0;						      \
+	  switch (sizeof (*(ptr))) {					      \
+	  case 1:							      \
+	  case 2:							      \
+	  case 4:							      \
+		  *(ptr) = (var);					      \
+		  break;						      \
+	  case 8: {							      \
+	  	  typeof(*(ptr)) __pu_val = 0;				      \
+		  memcpy(ptr, &__pu_val, sizeof(__pu_val));		      \
+		  }							      \
+		  break;						      \
+	  default:							      \
+		  __pu_err = __put_user_bad ();				      \
+		  break;						      \
+	  }								      \
+	  __pu_err;							      \
+  })
+#define __put_user_bad()	(bad_user_access_length (), (-EFAULT))
+
+#define put_user(x, ptr)	__put_user(x, ptr)
+#define get_user(x, ptr)	__get_user(x, ptr)
+
+#define __copy_from_user(to, from, n)	(memcpy (to, from, n), 0)
+#define __copy_to_user(to, from, n)	(memcpy(to, from, n), 0)
+
+#define __copy_to_user_inatomic __copy_to_user
+#define __copy_from_user_inatomic __copy_from_user
+
+#define copy_from_user(to, from, n)	__copy_from_user (to, from, n)
+#define copy_to_user(to, from, n) 	__copy_to_user(to, from, n)
+
+#define copy_to_user_ret(to,from,n,retval) \
+  ({ if (copy_to_user (to,from,n)) return retval; })
+
+#define copy_from_user_ret(to,from,n,retval) \
+  ({ if (copy_from_user (to,from,n)) return retval; })
+
+/*
+ * Copy a null terminated string from userspace.
+ */
+
+static inline long
+strncpy_from_user (char *dst, const char *src, long count)
+{
+	char *tmp;
+	strncpy (dst, src, count);
+	for (tmp = dst; *tmp && count > 0; tmp++, count--)
+		;
+	return tmp - dst;
+}
+
+/*
+ * Return the size of a string (including the ending 0)
+ *
+ * Return 0 on exception, a value greater than N if too long
+ */
+static inline long strnlen_user (const char *src, long n)
+{
+	return strlen (src) + 1;
+}
+
+#define strlen_user(str)	strnlen_user (str, 32767)
+
+/*
+ * Zero Userspace
+ */
+
+static inline unsigned long
+clear_user (void *to, unsigned long n)
+{
+	memset (to, 0, n);
+	return 0;
+}
+
+#endif /* __V850_UACCESS_H__ */