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| author | Matt Turner <mattst88@gmail.com> | 2016-05-23 18:10:11 -0700 |
|---|---|---|
| committer | Matt Turner <mattst88@gmail.com> | 2016-05-23 18:10:11 -0700 |
| commit | d106235f5eebe280f4f820fc29bb5d8708e2f54d (patch) | |
| tree | fb6ec824690da6ac63b127f7c2d194907b852c1d /ev6-clear_page-prefetch_m.S | |
Initial import
Diffstat (limited to 'ev6-clear_page-prefetch_m.S')
| -rw-r--r-- | ev6-clear_page-prefetch_m.S | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/ev6-clear_page-prefetch_m.S b/ev6-clear_page-prefetch_m.S new file mode 100644 index 0000000..7b39954 --- /dev/null +++ b/ev6-clear_page-prefetch_m.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 $16,192,$17 + nop + + lds $f31,0($16) + lds $f31,64($16) + lds $f31,128($16) + nop + +1: lds $f31,0($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 |