linux/arch/alpha/lib/ev6-clear_page.S

/*
 * arch/alpha/lib/ev6-clear_page.S
 *
 * Zero an entire page.
 */

        .text
        .align 4
        .global clear_page
        .ent clear_page
clear_page:
        .prologue 0

	lda	$0,128
	lda	$1,125
	addq	$16,64,$2
	addq	$16,128,$3

	addq	$16,192,$17
	wh64	($16)
	wh64	($2)
	wh64	($3)

1:	wh64	($17)
	stq	$31,0($16)
	subq	$0,1,$0
	subq	$1,1,$1

	stq	$31,8($16)
	stq	$31,16($16)
	addq	$17,64,$2
	nop

	stq	$31,24($16)
	stq	$31,32($16)
	cmovgt	$1,$2,$17
	nop

	stq	$31,40($16)
	stq	$31,48($16)
	nop
	nop

	stq	$31,56($16)
	addq	$16,64,$16
	nop
	bne	$0,1b

	ret
	nop
	nop
	nop

	.end clear_page
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-17 06:20:36 +08:00			`/*`
			`* arch/alpha/lib/ev6-clear_page.S`
			`*`
			`* Zero an entire page.`
			`*/`

			`.text`
			`.align 4`
			`.global clear_page`
			`.ent clear_page`
			`clear_page:`
			`.prologue 0`

			`lda $0,128`
			`lda $1,125`
			`addq $16,64,$2`
			`addq $16,128,$3`

			`addq $16,192,$17`
			`wh64 ($16)`
			`wh64 ($2)`
			`wh64 ($3)`

			`1: wh64 ($17)`
			`stq $31,0($16)`
			`subq $0,1,$0`
			`subq $1,1,$1`

			`stq $31,8($16)`
			`stq $31,16($16)`
			`addq $17,64,$2`
			`nop`

			`stq $31,24($16)`
			`stq $31,32($16)`
			`cmovgt $1,$2,$17`
			`nop`

			`stq $31,40($16)`
			`stq $31,48($16)`
			`nop`
			`nop`

			`stq $31,56($16)`
			`addq $16,64,$16`
			`nop`
			`bne $0,1b`

			`ret`
			`nop`
			`nop`
			`nop`

			`.end clear_page`