diff options
Diffstat (limited to 'arch/powerpc/lib/copypage_64.S')
-rw-r--r-- | arch/powerpc/lib/copypage_64.S | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/arch/powerpc/lib/copypage_64.S b/arch/powerpc/lib/copypage_64.S new file mode 100644 index 00000000000..40523b14010 --- /dev/null +++ b/arch/powerpc/lib/copypage_64.S @@ -0,0 +1,121 @@ +/* + * arch/ppc64/lib/copypage.S + * + * Copyright (C) 2002 Paul Mackerras, IBM Corp. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include <asm/processor.h> +#include <asm/ppc_asm.h> + +_GLOBAL(copy_4K_page) + std r31,-8(1) + std r30,-16(1) + std r29,-24(1) + std r28,-32(1) + std r27,-40(1) + std r26,-48(1) + std r25,-56(1) + std r24,-64(1) + std r23,-72(1) + std r22,-80(1) + std r21,-88(1) + std r20,-96(1) + li r5,4096/32 - 1 + addi r3,r3,-8 + li r12,5 +0: addi r5,r5,-24 + mtctr r12 + ld r22,640(4) + ld r21,512(4) + ld r20,384(4) + ld r11,256(4) + ld r9,128(4) + ld r7,0(4) + ld r25,648(4) + ld r24,520(4) + ld r23,392(4) + ld r10,264(4) + ld r8,136(4) + ldu r6,8(4) + cmpwi r5,24 +1: std r22,648(3) + std r21,520(3) + std r20,392(3) + std r11,264(3) + std r9,136(3) + std r7,8(3) + ld r28,648(4) + ld r27,520(4) + ld r26,392(4) + ld r31,264(4) + ld r30,136(4) + ld r29,8(4) + std r25,656(3) + std r24,528(3) + std r23,400(3) + std r10,272(3) + std r8,144(3) + std r6,16(3) + ld r22,656(4) + ld r21,528(4) + ld r20,400(4) + ld r11,272(4) + ld r9,144(4) + ld r7,16(4) + std r28,664(3) + std r27,536(3) + std r26,408(3) + std r31,280(3) + std r30,152(3) + stdu r29,24(3) + ld r25,664(4) + ld r24,536(4) + ld r23,408(4) + ld r10,280(4) + ld r8,152(4) + ldu r6,24(4) + bdnz 1b + std r22,648(3) + std r21,520(3) + std r20,392(3) + std r11,264(3) + std r9,136(3) + std r7,8(3) + addi r4,r4,640 + addi r3,r3,648 + bge 0b + mtctr r5 + ld r7,0(4) + ld r8,8(4) + ldu r9,16(4) +3: ld r10,8(4) + std r7,8(3) + ld r7,16(4) + std r8,16(3) + ld r8,24(4) + std r9,24(3) + ldu r9,32(4) + stdu r10,32(3) + bdnz 3b +4: ld r10,8(4) + std r7,8(3) + std r8,16(3) + std r9,24(3) + std r10,32(3) +9: ld r20,-96(1) + ld r21,-88(1) + ld r22,-80(1) + ld r23,-72(1) + ld r24,-64(1) + ld r25,-56(1) + ld r26,-48(1) + ld r27,-40(1) + ld r28,-32(1) + ld r29,-24(1) + ld r30,-16(1) + ld r31,-8(1) + blr |