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-rw-r--r--arch/sparc64/lib/copy_in_user.S119
1 files changed, 0 insertions, 119 deletions
diff --git a/arch/sparc64/lib/copy_in_user.S b/arch/sparc64/lib/copy_in_user.S
deleted file mode 100644
index 650af3f..0000000
--- a/arch/sparc64/lib/copy_in_user.S
+++ /dev/null
@@ -1,119 +0,0 @@
-/* copy_in_user.S: Copy from userspace to userspace.
- *
- * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com)
- */
-
-#include <asm/asi.h>
-
-#define XCC xcc
-
-#define EX(x,y) \
-98: x,y; \
- .section .fixup; \
- .align 4; \
-99: retl; \
- mov 1, %o0; \
- .section __ex_table,"a";\
- .align 4; \
- .word 98b, 99b; \
- .text; \
- .align 4;
-
- .register %g2,#scratch
- .register %g3,#scratch
-
- .text
- .align 32
-
- /* Don't try to get too fancy here, just nice and
- * simple. This is predominantly used for well aligned
- * small copies in the compat layer. It is also used
- * to copy register windows around during thread cloning.
- */
-
- .globl ___copy_in_user
- .type ___copy_in_user,#function
-___copy_in_user: /* %o0=dst, %o1=src, %o2=len */
- /* Writing to %asi is _expensive_ so we hardcode it.
- * Reading %asi to check for KERNEL_DS is comparatively
- * cheap.
- */
- rd %asi, %g1
- cmp %g1, ASI_AIUS
- bne,pn %icc, memcpy_user_stub
- nop
-
- cmp %o2, 0
- be,pn %XCC, 85f
- or %o0, %o1, %o3
- cmp %o2, 16
- bleu,a,pn %XCC, 80f
- or %o3, %o2, %o3
-
- /* 16 < len <= 64 */
- andcc %o3, 0x7, %g0
- bne,pn %XCC, 90f
- sub %o0, %o1, %o3
-
- andn %o2, 0x7, %o4
- and %o2, 0x7, %o2
-1: subcc %o4, 0x8, %o4
- EX(ldxa [%o1] %asi, %o5)
- EX(stxa %o5, [%o1 + %o3] ASI_AIUS)
- bgu,pt %XCC, 1b
- add %o1, 0x8, %o1
- andcc %o2, 0x4, %g0
- be,pt %XCC, 1f
- nop
- sub %o2, 0x4, %o2
- EX(lduwa [%o1] %asi, %o5)
- EX(stwa %o5, [%o1 + %o3] ASI_AIUS)
- add %o1, 0x4, %o1
-1: cmp %o2, 0
- be,pt %XCC, 85f
- nop
- ba,pt %xcc, 90f
- nop
-
-80: /* 0 < len <= 16 */
- andcc %o3, 0x3, %g0
- bne,pn %XCC, 90f
- sub %o0, %o1, %o3
-
-82:
- subcc %o2, 4, %o2
- EX(lduwa [%o1] %asi, %g1)
- EX(stwa %g1, [%o1 + %o3] ASI_AIUS)
- bgu,pt %XCC, 82b
- add %o1, 4, %o1
-
-85: retl
- clr %o0
-
- .align 32
-90:
- subcc %o2, 1, %o2
- EX(lduba [%o1] %asi, %g1)
- EX(stba %g1, [%o1 + %o3] ASI_AIUS)
- bgu,pt %XCC, 90b
- add %o1, 1, %o1
- retl
- clr %o0
-
- .size ___copy_in_user, .-___copy_in_user
-
- /* Act like copy_{to,in}_user(), ie. return zero instead
- * of original destination pointer. This is invoked when
- * copy_{to,in}_user() finds that %asi is kernel space.
- */
- .globl memcpy_user_stub
- .type memcpy_user_stub,#function
-memcpy_user_stub:
- save %sp, -192, %sp
- mov %i0, %o0
- mov %i1, %o1
- call memcpy
- mov %i2, %o2
- ret
- restore %g0, %g0, %o0
- .size memcpy_user_stub, .-memcpy_user_stub
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