/* * Copyright (C) 2008 Mark Nelson, 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/page.h> #include <asm/processor.h> #include <asm/ppc_asm.h> #include <asm/asm-offsets.h> .section ".toc","aw" PPC64_CACHES: .tc ppc64_caches[TC],ppc64_caches .section ".text" _GLOBAL(copy_page) BEGIN_FTR_SECTION lis r5,PAGE_SIZE@h FTR_SECTION_ELSE b .copypage_power7 ALT_FTR_SECTION_END_IFCLR(CPU_FTR_VMX_COPY) ori r5,r5,PAGE_SIZE@l BEGIN_FTR_SECTION ld r10,PPC64_CACHES@toc(r2) lwz r11,DCACHEL1LOGLINESIZE(r10) /* log2 of cache line size */ lwz r12,DCACHEL1LINESIZE(r10) /* get cache line size */ li r9,0 srd r8,r5,r11 mtctr r8 .Lsetup: dcbt r9,r4 dcbz r9,r3 add r9,r9,r12 bdnz .Lsetup END_FTR_SECTION_IFSET(CPU_FTR_CP_USE_DCBTZ) addi r3,r3,-8 srdi r8,r5,7 /* page is copied in 128 byte strides */ addi r8,r8,-1 /* one stride copied outside loop */ mtctr r8 ld r5,0(r4) ld r6,8(r4) ld r7,16(r4) ldu r8,24(r4) 1: std r5,8(r3) std r6,16(r3) ld r9,8(r4) ld r10,16(r4) std r7,24(r3) std r8,32(r3) ld r11,24(r4) ld r12,32(r4) std r9,40(r3) std r10,48(r3) ld r5,40(r4) ld r6,48(r4) std r11,56(r3) std r12,64(r3) ld r7,56(r4) ld r8,64(r4) std r5,72(r3) std r6,80(r3) ld r9,72(r4) ld r10,80(r4) std r7,88(r3) std r8,96(r3) ld r11,88(r4) ld r12,96(r4) std r9,104(r3) std r10,112(r3) ld r5,104(r4) ld r6,112(r4) std r11,120(r3) stdu r12,128(r3) ld r7,120(r4) ldu r8,128(r4) bdnz 1b std r5,8(r3) std r6,16(r3) ld r9,8(r4) ld r10,16(r4) std r7,24(r3) std r8,32(r3) ld r11,24(r4) ld r12,32(r4) std r9,40(r3) std r10,48(r3) ld r5,40(r4) ld r6,48(r4) std r11,56(r3) std r12,64(r3) ld r7,56(r4) ld r8,64(r4) std r5,72(r3) std r6,80(r3) ld r9,72(r4) ld r10,80(r4) std r7,88(r3) std r8,96(r3) ld r11,88(r4) ld r12,96(r4) std r9,104(r3) std r10,112(r3) std r11,120(r3) std r12,128(r3) blr