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-rw-r--r--include/asm-mips/uaccess.h13
1 files changed, 10 insertions, 3 deletions
diff --git a/include/asm-mips/uaccess.h b/include/asm-mips/uaccess.h
index c30c718994c..66523d61095 100644
--- a/include/asm-mips/uaccess.h
+++ b/include/asm-mips/uaccess.h
@@ -5,6 +5,7 @@
*
* Copyright (C) 1996, 1997, 1998, 1999, 2000, 03, 04 by Ralf Baechle
* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
+ * Copyright (C) 2007 Maciej W. Rozycki
*/
#ifndef _ASM_UACCESS_H
#define _ASM_UACCESS_H
@@ -387,6 +388,12 @@ extern void __put_user_unknown(void);
"jal\t" #destination "\n\t"
#endif
+#ifndef CONFIG_CPU_DADDI_WORKAROUNDS
+#define DADDI_SCRATCH "$0"
+#else
+#define DADDI_SCRATCH "$3"
+#endif
+
extern size_t __copy_user(void *__to, const void *__from, size_t __n);
#define __invoke_copy_to_user(to, from, n) \
@@ -403,7 +410,7 @@ extern size_t __copy_user(void *__to, const void *__from, size_t __n);
: "+r" (__cu_to_r), "+r" (__cu_from_r), "+r" (__cu_len_r) \
: \
: "$8", "$9", "$10", "$11", "$12", "$15", "$24", "$31", \
- "memory"); \
+ DADDI_SCRATCH, "memory"); \
__cu_len_r; \
})
@@ -512,7 +519,7 @@ extern size_t __copy_user_inatomic(void *__to, const void *__from, size_t __n);
: "+r" (__cu_to_r), "+r" (__cu_from_r), "+r" (__cu_len_r) \
: \
: "$8", "$9", "$10", "$11", "$12", "$15", "$24", "$31", \
- "memory"); \
+ DADDI_SCRATCH, "memory"); \
__cu_len_r; \
})
@@ -535,7 +542,7 @@ extern size_t __copy_user_inatomic(void *__to, const void *__from, size_t __n);
: "+r" (__cu_to_r), "+r" (__cu_from_r), "+r" (__cu_len_r) \
: \
: "$8", "$9", "$10", "$11", "$12", "$15", "$24", "$31", \
- "memory"); \
+ DADDI_SCRATCH, "memory"); \
__cu_len_r; \
})