linux/arch/powerpc/lib/copypage_64.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
powerpc: Merge enough to start building in arch/powerpc. This creates the directory structure under arch/powerpc and a bunch of Kconfig files. It does a first-cut merge of arch/powerpc/mm, arch/powerpc/lib and arch/powerpc/platforms/powermac. This is enough to build a 32-bit powermac kernel with ARCH=powerpc. For now we are getting some unmerged files from arch/ppc/kernel and arch/ppc/syslib, or arch/ppc64/kernel. This makes some minor changes to files in those directories and files outside arch/powerpc. The boot directory is still not merged. That's going to be interesting. Signed-off-by: Paul Mackerras <paulus@samba.org> 2005-09-26 14:04:21 +08:00			`/*`
			`* 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>`

[PATCH] ppc64: support 64k pages Adds a new CONFIG_PPC_64K_PAGES which, when enabled, changes the kernel base page size to 64K. The resulting kernel still boots on any hardware. On current machines with 4K pages support only, the kernel will maintain 16 "subpages" for each 64K page transparently. Note that while real 64K capable HW has been tested, the current patch will not enable it yet as such hardware is not released yet, and I'm still verifying with the firmware architects the proper to get the information from the newer hypervisors. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 2005-11-07 08:06:55 +08:00			`_GLOBAL(copy_4K_page)`
powerpc: Merge enough to start building in arch/powerpc. This creates the directory structure under arch/powerpc and a bunch of Kconfig files. It does a first-cut merge of arch/powerpc/mm, arch/powerpc/lib and arch/powerpc/platforms/powermac. This is enough to build a 32-bit powermac kernel with ARCH=powerpc. For now we are getting some unmerged files from arch/ppc/kernel and arch/ppc/syslib, or arch/ppc64/kernel. This makes some minor changes to files in those directories and files outside arch/powerpc. The boot directory is still not merged. That's going to be interesting. Signed-off-by: Paul Mackerras <paulus@samba.org> 2005-09-26 14:04:21 +08:00			`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`