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| author | Paul Mundt <lethal@linux-sh.org> | 2009-07-27 13:55:46 +0200 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-07-27 13:55:46 +0200 |
| commit | 221c007b028ebf663ebee4fc90483909547d92a7 (patch) | |
| tree | 2ca241511fc008283fdabfcd0a15b641709ed148 /arch/sh/lib/clear_page.S | |
| parent | sh: wire up clear_user_highpage() for sh4, convert sh7705. (diff) | |
| download | linux-221c007b028ebf663ebee4fc90483909547d92a7.tar.xz linux-221c007b028ebf663ebee4fc90483909547d92a7.zip | |
sh: Rename arch/sh/lib/clear_page.S -> __clear_user.S.
Now that this only contains the __clear_user() function, rename it
accordingly.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/lib/clear_page.S')
| -rw-r--r-- | arch/sh/lib/clear_page.S | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/arch/sh/lib/clear_page.S b/arch/sh/lib/clear_page.S deleted file mode 100644 index bee9817e055d..000000000000 --- a/arch/sh/lib/clear_page.S +++ /dev/null @@ -1,108 +0,0 @@ -/* - * __clear_user_page, __clear_user, clear_page implementation of SuperH - * - * Copyright (C) 2001 Kaz Kojima - * Copyright (C) 2001, 2002 Niibe Yutaka - * Copyright (C) 2006 Paul Mundt - */ -#include <linux/linkage.h> -#include <asm/page.h> - -ENTRY(__clear_user) - ! - mov #0, r0 - mov #0xe0, r1 ! 0xffffffe0 - ! - ! r4..(r4+31)&~32 -------- not aligned [ Area 0 ] - ! (r4+31)&~32..(r4+r5)&~32 -------- aligned [ Area 1 ] - ! (r4+r5)&~32..r4+r5 -------- not aligned [ Area 2 ] - ! - ! Clear area 0 - mov r4, r2 - ! - tst r1, r5 ! length < 32 - bt .Larea2 ! skip to remainder - ! - add #31, r2 - and r1, r2 - cmp/eq r4, r2 - bt .Larea1 - mov r2, r3 - sub r4, r3 - mov r3, r7 - mov r4, r2 - ! -.L0: dt r3 -0: mov.b r0, @r2 - bf/s .L0 - add #1, r2 - ! - sub r7, r5 - mov r2, r4 -.Larea1: - mov r4, r3 - add r5, r3 - and r1, r3 - cmp/hi r2, r3 - bf .Larea2 - ! - ! Clear area 1 -#if defined(CONFIG_CPU_SH4) -1: movca.l r0, @r2 -#else -1: mov.l r0, @r2 -#endif - add #4, r2 -2: mov.l r0, @r2 - add #4, r2 -3: mov.l r0, @r2 - add #4, r2 -4: mov.l r0, @r2 - add #4, r2 -5: mov.l r0, @r2 - add #4, r2 -6: mov.l r0, @r2 - add #4, r2 -7: mov.l r0, @r2 - add #4, r2 -8: mov.l r0, @r2 - add #4, r2 - cmp/hi r2, r3 - bt/s 1b - nop - ! - ! Clear area 2 -.Larea2: - mov r4, r3 - add r5, r3 - cmp/hs r3, r2 - bt/s .Ldone - sub r2, r3 -.L2: dt r3 -9: mov.b r0, @r2 - bf/s .L2 - add #1, r2 - ! -.Ldone: rts - mov #0, r0 ! return 0 as normal return - - ! return the number of bytes remained -.Lbad_clear_user: - mov r4, r0 - add r5, r0 - rts - sub r2, r0 - -.section __ex_table,"a" - .align 2 - .long 0b, .Lbad_clear_user - .long 1b, .Lbad_clear_user - .long 2b, .Lbad_clear_user - .long 3b, .Lbad_clear_user - .long 4b, .Lbad_clear_user - .long 5b, .Lbad_clear_user - .long 6b, .Lbad_clear_user - .long 7b, .Lbad_clear_user - .long 8b, .Lbad_clear_user - .long 9b, .Lbad_clear_user -.previous |