From d106235f5eebe280f4f820fc29bb5d8708e2f54d Mon Sep 17 00:00:00 2001 From: Matt Turner Date: Mon, 23 May 2016 18:10:11 -0700 Subject: Initial import --- ev6-clear_page.S | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 ev6-clear_page.S (limited to 'ev6-clear_page.S') diff --git a/ev6-clear_page.S b/ev6-clear_page.S new file mode 100644 index 0000000..c647f49 --- /dev/null +++ b/ev6-clear_page.S @@ -0,0 +1,54 @@ +/* + * 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 -- cgit v1.2.3