15a3204d24
Rather than override the machine type in .S code (which can hide wrong or ambiguous code generation for the target), set the type to power4 for all assembly. This also means we need to be careful not to build power4-only code when we're not building for Book3S, such as the "power7" versions of copyuser/page/memcpy. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [mpe: Fix Book3E build, don't build the "power7" variants for non-Book3S] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
117 lines
2.2 KiB
ArmAsm
117 lines
2.2 KiB
ArmAsm
/*
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* Copyright (C) 2008 Mark Nelson, IBM Corp.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <asm/page.h>
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#include <asm/processor.h>
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#include <asm/ppc_asm.h>
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#include <asm/asm-offsets.h>
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#include <asm/export.h>
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.section ".toc","aw"
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PPC64_CACHES:
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.tc ppc64_caches[TC],ppc64_caches
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.section ".text"
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_GLOBAL_TOC(copy_page)
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BEGIN_FTR_SECTION
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lis r5,PAGE_SIZE@h
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FTR_SECTION_ELSE
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#ifdef CONFIG_PPC_BOOK3S_64
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b copypage_power7
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#endif
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ALT_FTR_SECTION_END_IFCLR(CPU_FTR_VMX_COPY)
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ori r5,r5,PAGE_SIZE@l
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BEGIN_FTR_SECTION
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ld r10,PPC64_CACHES@toc(r2)
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lwz r11,DCACHEL1LOGBLOCKSIZE(r10) /* log2 of cache block size */
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lwz r12,DCACHEL1BLOCKSIZE(r10) /* get cache block size */
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li r9,0
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srd r8,r5,r11
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mtctr r8
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.Lsetup:
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dcbt r9,r4
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dcbz r9,r3
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add r9,r9,r12
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bdnz .Lsetup
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END_FTR_SECTION_IFSET(CPU_FTR_CP_USE_DCBTZ)
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addi r3,r3,-8
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srdi r8,r5,7 /* page is copied in 128 byte strides */
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addi r8,r8,-1 /* one stride copied outside loop */
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mtctr r8
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ld r5,0(r4)
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ld r6,8(r4)
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ld r7,16(r4)
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ldu r8,24(r4)
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1: std r5,8(r3)
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std r6,16(r3)
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ld r9,8(r4)
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ld r10,16(r4)
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std r7,24(r3)
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std r8,32(r3)
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ld r11,24(r4)
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ld r12,32(r4)
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std r9,40(r3)
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std r10,48(r3)
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ld r5,40(r4)
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ld r6,48(r4)
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std r11,56(r3)
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std r12,64(r3)
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ld r7,56(r4)
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ld r8,64(r4)
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std r5,72(r3)
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std r6,80(r3)
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ld r9,72(r4)
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ld r10,80(r4)
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std r7,88(r3)
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std r8,96(r3)
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ld r11,88(r4)
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ld r12,96(r4)
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std r9,104(r3)
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std r10,112(r3)
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ld r5,104(r4)
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ld r6,112(r4)
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std r11,120(r3)
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stdu r12,128(r3)
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ld r7,120(r4)
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ldu r8,128(r4)
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bdnz 1b
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std r5,8(r3)
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std r6,16(r3)
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ld r9,8(r4)
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ld r10,16(r4)
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std r7,24(r3)
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std r8,32(r3)
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ld r11,24(r4)
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ld r12,32(r4)
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std r9,40(r3)
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std r10,48(r3)
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ld r5,40(r4)
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ld r6,48(r4)
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std r11,56(r3)
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std r12,64(r3)
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ld r7,56(r4)
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ld r8,64(r4)
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std r5,72(r3)
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std r6,80(r3)
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ld r9,72(r4)
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ld r10,80(r4)
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std r7,88(r3)
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std r8,96(r3)
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ld r11,88(r4)
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ld r12,96(r4)
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std r9,104(r3)
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std r10,112(r3)
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std r11,120(r3)
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std r12,128(r3)
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blr
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EXPORT_SYMBOL(copy_page)
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