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-rw-r--r--arch/tile/lib/usercopy_64.S89
1 files changed, 0 insertions, 89 deletions
diff --git a/arch/tile/lib/usercopy_64.S b/arch/tile/lib/usercopy_64.S
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--- a/arch/tile/lib/usercopy_64.S
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@@ -1,89 +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.
- */
-
-#include <linux/linkage.h>
-#include <asm/errno.h>
-#include <asm/cache.h>
-#include <arch/chip.h>
-
-/* Access user memory, but use MMU to avoid propagating kernel exceptions. */
-
-/*
- * clear_user_asm takes the user target address in r0 and the
- * number of bytes to zero in r1.
- * It returns the number of uncopiable bytes (hopefully zero) in r0.
- * Note that we don't use a separate .fixup section here since we fall
- * through into the "fixup" code as the last straight-line bundle anyway.
- */
-STD_ENTRY(clear_user_asm)
- { beqz r1, 2f; or r2, r0, r1 }
- andi r2, r2, 7
- beqzt r2, .Lclear_aligned_user_asm
-1: { st1 r0, zero; addi r0, r0, 1; addi r1, r1, -1 }
- bnezt r1, 1b
-2: { move r0, r1; jrp lr }
- .pushsection __ex_table,"a"
- .align 8
- .quad 1b, 2b
- .popsection
-
-.Lclear_aligned_user_asm:
-1: { st r0, zero; addi r0, r0, 8; addi r1, r1, -8 }
- bnezt r1, 1b
-2: { move r0, r1; jrp lr }
- STD_ENDPROC(clear_user_asm)
- .pushsection __ex_table,"a"
- .align 8
- .quad 1b, 2b
- .popsection
-
-/*
- * flush_user_asm takes the user target address in r0 and the
- * number of bytes to flush in r1.
- * It returns the number of unflushable bytes (hopefully zero) in r0.
- */
-STD_ENTRY(flush_user_asm)
- beqz r1, 2f
- { movei r2, L2_CACHE_BYTES; add r1, r0, r1 }
- { sub r2, zero, r2; addi r1, r1, L2_CACHE_BYTES-1 }
- { and r0, r0, r2; and r1, r1, r2 }
- { sub r1, r1, r0 }
-1: { flush r0; addi r1, r1, -CHIP_FLUSH_STRIDE() }
- { addi r0, r0, CHIP_FLUSH_STRIDE(); bnezt r1, 1b }
-2: { move r0, r1; jrp lr }
- STD_ENDPROC(flush_user_asm)
- .pushsection __ex_table,"a"
- .align 8
- .quad 1b, 2b
- .popsection
-
-/*
- * finv_user_asm takes the user target address in r0 and the
- * number of bytes to flush-invalidate in r1.
- * It returns the number of not finv'able bytes (hopefully zero) in r0.
- */
-STD_ENTRY(finv_user_asm)
- beqz r1, 2f
- { movei r2, L2_CACHE_BYTES; add r1, r0, r1 }
- { sub r2, zero, r2; addi r1, r1, L2_CACHE_BYTES-1 }
- { and r0, r0, r2; and r1, r1, r2 }
- { sub r1, r1, r0 }
-1: { finv r0; addi r1, r1, -CHIP_FINV_STRIDE() }
- { addi r0, r0, CHIP_FINV_STRIDE(); bnezt r1, 1b }
-2: { move r0, r1; jrp lr }
- STD_ENDPROC(finv_user_asm)
- .pushsection __ex_table,"a"
- .align 8
- .quad 1b, 2b
- .popsection