diff options
Diffstat (limited to 'arch/alpha/lib/copy_page.S')
| -rw-r--r-- | arch/alpha/lib/copy_page.S | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/alpha/lib/copy_page.S b/arch/alpha/lib/copy_page.S new file mode 100644 index 0000000000..1c444fdad9 --- /dev/null +++ b/arch/alpha/lib/copy_page.S @@ -0,0 +1,51 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * arch/alpha/lib/copy_page.S + * + * Copy an entire page. + */ +#include <linux/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) |