169 lines
3.5 KiB
ArmAsm
169 lines
3.5 KiB
ArmAsm
/*
|
|
* 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.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*
|
|
* Copyright (C) IBM Corporation, 2012
|
|
*
|
|
* Author: Anton Blanchard <anton@au.ibm.com>
|
|
*/
|
|
#include <asm/page.h>
|
|
#include <asm/ppc_asm.h>
|
|
|
|
_GLOBAL(copypage_power7)
|
|
/*
|
|
* We prefetch both the source and destination using enhanced touch
|
|
* instructions. We use a stream ID of 0 for the load side and
|
|
* 1 for the store side. Since source and destination are page
|
|
* aligned we don't need to clear the bottom 7 bits of either
|
|
* address.
|
|
*/
|
|
ori r9,r3,1 /* stream=1 => to */
|
|
|
|
#ifdef CONFIG_PPC_64K_PAGES
|
|
lis r7,0x0E01 /* depth=7
|
|
* units/cachelines=512 */
|
|
#else
|
|
lis r7,0x0E00 /* depth=7 */
|
|
ori r7,r7,0x1000 /* units/cachelines=32 */
|
|
#endif
|
|
ori r10,r7,1 /* stream=1 */
|
|
|
|
lis r8,0x8000 /* GO=1 */
|
|
clrldi r8,r8,32
|
|
|
|
.machine push
|
|
.machine "power4"
|
|
/* setup read stream 0 */
|
|
dcbt r0,r4,0b01000 /* addr from */
|
|
dcbt r0,r7,0b01010 /* length and depth from */
|
|
/* setup write stream 1 */
|
|
dcbtst r0,r9,0b01000 /* addr to */
|
|
dcbtst r0,r10,0b01010 /* length and depth to */
|
|
eieio
|
|
dcbt r0,r8,0b01010 /* all streams GO */
|
|
.machine pop
|
|
|
|
#ifdef CONFIG_ALTIVEC
|
|
mflr r0
|
|
std r3,-STACKFRAMESIZE+STK_REG(R31)(r1)
|
|
std r4,-STACKFRAMESIZE+STK_REG(R30)(r1)
|
|
std r0,16(r1)
|
|
stdu r1,-STACKFRAMESIZE(r1)
|
|
bl enter_vmx_copy
|
|
cmpwi r3,0
|
|
ld r0,STACKFRAMESIZE+16(r1)
|
|
ld r3,STK_REG(R31)(r1)
|
|
ld r4,STK_REG(R30)(r1)
|
|
mtlr r0
|
|
|
|
li r0,(PAGE_SIZE/128)
|
|
mtctr r0
|
|
|
|
beq .Lnonvmx_copy
|
|
|
|
addi r1,r1,STACKFRAMESIZE
|
|
|
|
li r6,16
|
|
li r7,32
|
|
li r8,48
|
|
li r9,64
|
|
li r10,80
|
|
li r11,96
|
|
li r12,112
|
|
|
|
.align 5
|
|
1: lvx v7,r0,r4
|
|
lvx v6,r4,r6
|
|
lvx v5,r4,r7
|
|
lvx v4,r4,r8
|
|
lvx v3,r4,r9
|
|
lvx v2,r4,r10
|
|
lvx v1,r4,r11
|
|
lvx v0,r4,r12
|
|
addi r4,r4,128
|
|
stvx v7,r0,r3
|
|
stvx v6,r3,r6
|
|
stvx v5,r3,r7
|
|
stvx v4,r3,r8
|
|
stvx v3,r3,r9
|
|
stvx v2,r3,r10
|
|
stvx v1,r3,r11
|
|
stvx v0,r3,r12
|
|
addi r3,r3,128
|
|
bdnz 1b
|
|
|
|
b exit_vmx_copy /* tail call optimise */
|
|
|
|
#else
|
|
li r0,(PAGE_SIZE/128)
|
|
mtctr r0
|
|
|
|
stdu r1,-STACKFRAMESIZE(r1)
|
|
#endif
|
|
|
|
.Lnonvmx_copy:
|
|
std r14,STK_REG(R14)(r1)
|
|
std r15,STK_REG(R15)(r1)
|
|
std r16,STK_REG(R16)(r1)
|
|
std r17,STK_REG(R17)(r1)
|
|
std r18,STK_REG(R18)(r1)
|
|
std r19,STK_REG(R19)(r1)
|
|
std r20,STK_REG(R20)(r1)
|
|
|
|
1: ld r0,0(r4)
|
|
ld r5,8(r4)
|
|
ld r6,16(r4)
|
|
ld r7,24(r4)
|
|
ld r8,32(r4)
|
|
ld r9,40(r4)
|
|
ld r10,48(r4)
|
|
ld r11,56(r4)
|
|
ld r12,64(r4)
|
|
ld r14,72(r4)
|
|
ld r15,80(r4)
|
|
ld r16,88(r4)
|
|
ld r17,96(r4)
|
|
ld r18,104(r4)
|
|
ld r19,112(r4)
|
|
ld r20,120(r4)
|
|
addi r4,r4,128
|
|
std r0,0(r3)
|
|
std r5,8(r3)
|
|
std r6,16(r3)
|
|
std r7,24(r3)
|
|
std r8,32(r3)
|
|
std r9,40(r3)
|
|
std r10,48(r3)
|
|
std r11,56(r3)
|
|
std r12,64(r3)
|
|
std r14,72(r3)
|
|
std r15,80(r3)
|
|
std r16,88(r3)
|
|
std r17,96(r3)
|
|
std r18,104(r3)
|
|
std r19,112(r3)
|
|
std r20,120(r3)
|
|
addi r3,r3,128
|
|
bdnz 1b
|
|
|
|
ld r14,STK_REG(R14)(r1)
|
|
ld r15,STK_REG(R15)(r1)
|
|
ld r16,STK_REG(R16)(r1)
|
|
ld r17,STK_REG(R17)(r1)
|
|
ld r18,STK_REG(R18)(r1)
|
|
ld r19,STK_REG(R19)(r1)
|
|
ld r20,STK_REG(R20)(r1)
|
|
addi r1,r1,STACKFRAMESIZE
|
|
blr
|