-/* $Id: clear_page.S,v 1.13 2003/08/25 17:03:10 lethal Exp $
- *
+/*
* __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>
/*
* clear_page_slow
/*
* r0 --- scratch
* r4 --- to
- * r5 --- to + 4096
+ * r5 --- to + PAGE_SIZE
*/
ENTRY(clear_page_slow)
mov r4,r5
- mov.w .Llimit,r0
+ mov.l .Llimit,r0
add r0,r5
mov #0,r0
!
!
rts
nop
-.Llimit: .word (4096-28)
+.Llimit: .long (PAGE_SIZE-28)
ENTRY(__clear_user)
!
* r0 --- scratch
* r4 --- to
* r5 --- orig_to
- * r6 --- to + 4096
+ * r6 --- to + PAGE_SIZE
*/
ENTRY(__clear_user_page)
- mov.w .L4096,r0
+ mov.l .Lpsz,r0
mov r4,r6
add r0,r6
mov #0,r0
!
rts
nop
-.L4096: .word 4096
-
-ENTRY(__flush_cache_4096)
- mov.l 1f,r3
- add r6,r3
- mov r4,r0
- mov #64,r2
- shll r2
- mov #64,r6
- jmp @r3
- mov #96,r7
- .align 2
-1: .long 2f
-2:
- .rept 32
- mov.l r5,@r0
- mov.l r5,@(32,r0)
- mov.l r5,@(r0,r6)
- mov.l r5,@(r0,r7)
- add r2,r5
- add r2,r0
- .endr
- nop
- nop
- nop
- nop
- nop
- nop
- nop
- rts
- nop
-
-ENTRY(__flush_dcache_all)
- mov.l 2f,r0
- mov.l 3f,r4
- and r0,r4 ! r4 = (unsigned long)&empty_zero_page[0] & ~0xffffc000
- stc sr,r1 ! save SR
- mov.l 4f,r2
- or r1,r2
- mov #32,r3
- shll2 r3
-1:
- ldc r2,sr ! set BL bit
- movca.l r0,@r4
- ocbi @r4
- add #32,r4
- movca.l r0,@r4
- ocbi @r4
- add #32,r4
- movca.l r0,@r4
- ocbi @r4
- add #32,r4
- movca.l r0,@r4
- ocbi @r4
- ldc r1,sr ! restore SR
- dt r3
- bf/s 1b
- add #32,r4
-
- rts
- nop
- .align 2
-2: .long 0xffffc000
-3: .long empty_zero_page
-4: .long 0x10000000 ! BL bit
-
-/* __flush_cache_4096_all(unsigned long addr) */
-ENTRY(__flush_cache_4096_all)
- mov.l 2f,r0
- mov.l 3f,r2
- and r0,r2
- or r2,r4 ! r4 = addr | (unsigned long)&empty_zero_page[0] & ~0x3fff
- stc sr,r1 ! save SR
- mov.l 4f,r2
- or r1,r2
- mov #32,r3
-1:
- ldc r2,sr ! set BL bit
- movca.l r0,@r4
- ocbi @r4
- add #32,r4
- movca.l r0,@r4
- ocbi @r4
- add #32,r4
- movca.l r0,@r4
- ocbi @r4
- add #32,r4
- movca.l r0,@r4
- ocbi @r4
- ldc r1,sr ! restore SR
- dt r3
- bf/s 1b
- add #32,r4
+.Lpsz: .long PAGE_SIZE
- rts
- nop
- .align 2
-2: .long 0xffffc000
-3: .long empty_zero_page
-4: .long 0x10000000 ! BL bit
#endif
+