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-rw-r--r--arch/tile/lib/memcpy_user_64.c85
1 files changed, 0 insertions, 85 deletions
diff --git a/arch/tile/lib/memcpy_user_64.c b/arch/tile/lib/memcpy_user_64.c
deleted file mode 100644
index a3fea9fd973e..000000000000
--- a/arch/tile/lib/memcpy_user_64.c
+++ /dev/null
@@ -1,85 +0,0 @@
-/*
- * Copyright 2011 Tilera Corporation. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation, version 2.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for
- * more details.
- *
- * Do memcpy(), but trap and return "n" when a load or store faults.
- *
- * Note: this idiom only works when memcpy() compiles to a leaf function.
- * Here leaf function not only means it does not have calls, but also
- * requires no stack operations (sp, stack frame pointer) and no
- * use of callee-saved registers, else "jrp lr" will be incorrect since
- * unwinding stack frame is bypassed. Since memcpy() is not complex so
- * these conditions are satisfied here, but we need to be careful when
- * modifying this file. This is not a clean solution but is the best
- * one so far.
- *
- * Also note that we are capturing "n" from the containing scope here.
- */
-
-#define _ST(p, inst, v) \
- ({ \
- asm("1: " #inst " %0, %1;" \
- ".pushsection .coldtext,\"ax\";" \
- "2: { move r0, %2; jrp lr };" \
- ".section __ex_table,\"a\";" \
- ".align 8;" \
- ".quad 1b, 2b;" \
- ".popsection" \
- : "=m" (*(p)) : "r" (v), "r" (n)); \
- })
-
-#define _LD(p, inst) \
- ({ \
- unsigned long __v; \
- asm("1: " #inst " %0, %1;" \
- ".pushsection .coldtext,\"ax\";" \
- "2: { move r0, %2; jrp lr };" \
- ".section __ex_table,\"a\";" \
- ".align 8;" \
- ".quad 1b, 2b;" \
- ".popsection" \
- : "=r" (__v) : "m" (*(p)), "r" (n)); \
- __v; \
- })
-
-#define USERCOPY_FUNC raw_copy_to_user
-#define ST1(p, v) _ST((p), st1, (v))
-#define ST2(p, v) _ST((p), st2, (v))
-#define ST4(p, v) _ST((p), st4, (v))
-#define ST8(p, v) _ST((p), st, (v))
-#define LD1 LD
-#define LD2 LD
-#define LD4 LD
-#define LD8 LD
-#include "memcpy_64.c"
-
-#define USERCOPY_FUNC raw_copy_from_user
-#define ST1 ST
-#define ST2 ST
-#define ST4 ST
-#define ST8 ST
-#define LD1(p) _LD((p), ld1u)
-#define LD2(p) _LD((p), ld2u)
-#define LD4(p) _LD((p), ld4u)
-#define LD8(p) _LD((p), ld)
-#include "memcpy_64.c"
-
-#define USERCOPY_FUNC raw_copy_in_user
-#define ST1(p, v) _ST((p), st1, (v))
-#define ST2(p, v) _ST((p), st2, (v))
-#define ST4(p, v) _ST((p), st4, (v))
-#define ST8(p, v) _ST((p), st, (v))
-#define LD1(p) _LD((p), ld1u)
-#define LD2(p) _LD((p), ld2u)
-#define LD4(p) _LD((p), ld4u)
-#define LD8(p) _LD((p), ld)
-#include "memcpy_64.c"