forked from Minki/linux
478b8fecda
o Renamed files in sparc64 to <name>_64.S when identical to sparc32 files. o iomap.c were equal for sparc32 and sparc64 o adjusted sparc/Makefile now we have only one lib/ Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
78 lines
1.6 KiB
ArmAsm
78 lines
1.6 KiB
ArmAsm
/* GENpage.S: Generic clear and copy page.
|
|
*
|
|
* Copyright (C) 2007 (davem@davemloft.net)
|
|
*/
|
|
#include <asm/page.h>
|
|
|
|
.text
|
|
.align 32
|
|
|
|
GENcopy_user_page:
|
|
set PAGE_SIZE, %g7
|
|
1: ldx [%o1 + 0x00], %o2
|
|
ldx [%o1 + 0x08], %o3
|
|
ldx [%o1 + 0x10], %o4
|
|
ldx [%o1 + 0x18], %o5
|
|
stx %o2, [%o0 + 0x00]
|
|
stx %o3, [%o0 + 0x08]
|
|
stx %o4, [%o0 + 0x10]
|
|
stx %o5, [%o0 + 0x18]
|
|
ldx [%o1 + 0x20], %o2
|
|
ldx [%o1 + 0x28], %o3
|
|
ldx [%o1 + 0x30], %o4
|
|
ldx [%o1 + 0x38], %o5
|
|
stx %o2, [%o0 + 0x20]
|
|
stx %o3, [%o0 + 0x28]
|
|
stx %o4, [%o0 + 0x30]
|
|
stx %o5, [%o0 + 0x38]
|
|
subcc %g7, 64, %g7
|
|
add %o1, 64, %o1
|
|
bne,pt %xcc, 1b
|
|
add %o0, 64, %o0
|
|
retl
|
|
nop
|
|
|
|
GENclear_page:
|
|
GENclear_user_page:
|
|
set PAGE_SIZE, %g7
|
|
1: stx %g0, [%o0 + 0x00]
|
|
stx %g0, [%o0 + 0x08]
|
|
stx %g0, [%o0 + 0x10]
|
|
stx %g0, [%o0 + 0x18]
|
|
stx %g0, [%o0 + 0x20]
|
|
stx %g0, [%o0 + 0x28]
|
|
stx %g0, [%o0 + 0x30]
|
|
stx %g0, [%o0 + 0x38]
|
|
subcc %g7, 64, %g7
|
|
bne,pt %xcc, 1b
|
|
add %o0, 64, %o0
|
|
|
|
#define BRANCH_ALWAYS 0x10680000
|
|
#define NOP 0x01000000
|
|
#define GEN_DO_PATCH(OLD, NEW) \
|
|
sethi %hi(NEW), %g1; \
|
|
or %g1, %lo(NEW), %g1; \
|
|
sethi %hi(OLD), %g2; \
|
|
or %g2, %lo(OLD), %g2; \
|
|
sub %g1, %g2, %g1; \
|
|
sethi %hi(BRANCH_ALWAYS), %g3; \
|
|
sll %g1, 11, %g1; \
|
|
srl %g1, 11 + 2, %g1; \
|
|
or %g3, %lo(BRANCH_ALWAYS), %g3; \
|
|
or %g3, %g1, %g3; \
|
|
stw %g3, [%g2]; \
|
|
sethi %hi(NOP), %g3; \
|
|
or %g3, %lo(NOP), %g3; \
|
|
stw %g3, [%g2 + 0x4]; \
|
|
flush %g2;
|
|
|
|
.globl generic_patch_pageops
|
|
.type generic_patch_pageops,#function
|
|
generic_patch_pageops:
|
|
GEN_DO_PATCH(copy_user_page, GENcopy_user_page)
|
|
GEN_DO_PATCH(_clear_page, GENclear_page)
|
|
GEN_DO_PATCH(clear_user_page, GENclear_user_page)
|
|
retl
|
|
nop
|
|
.size generic_patch_pageops,.-generic_patch_pageops
|