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kernel-49/arch/alpha/lib/copy_page.S
Andrey Zolotarev e72e9355e3 start the android-4.9 tree
git: https://android.googlesource.com/kernel/common
branch: android-4.9
commit: 03fcc2fe71308c2d164b4e6cbfc738c63e670444
2018-11-15 21:36:32 +03:00

51 lines
581 B
ArmAsm

/*
* arch/alpha/lib/copy_page.S
*
* Copy an entire page.
*/
#include <asm/export.h>
.text
.align 4
.global copy_page
.ent copy_page
copy_page:
.prologue 0
lda $18,128
nop
unop
nop
1: ldq $0,0($17)
ldq $1,8($17)
ldq $2,16($17)
ldq $3,24($17)
ldq $4,32($17)
ldq $5,40($17)
ldq $6,48($17)
ldq $7,56($17)
stq $0,0($16)
subq $18,1,$18
stq $1,8($16)
addq $17,64,$17
stq $2,16($16)
stq $3,24($16)
stq $4,32($16)
stq $5,40($16)
stq $6,48($16)
stq $7,56($16)
addq $16,64,$16
bne $18, 1b
ret
nop
unop
nop
.end copy_page
EXPORT_SYMBOL(copy_page)