sparc,sparc64: unify lib/

[pandora-kernel.git] / arch / sparc64 / lib / copy_in_user.S

diff --git a/arch/sparc64/lib/copy_in_user.S b/arch/sparc64/lib/copy_in_user.S
deleted file mode 100644 (file)
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