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54 lines
602 B
54 lines
602 B
/*
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* arch/alpha/lib/ev6-clear_page.S
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*
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* Zero an entire page.
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*/
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.text
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.align 4
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.global clear_page
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.ent clear_page
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clear_page:
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.prologue 0
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lda $0,128
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lda $1,125
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addq $16,64,$2
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addq $16,128,$3
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addq $16,192,$17
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wh64 ($16)
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wh64 ($2)
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wh64 ($3)
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1: wh64 ($17)
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stq $31,0($16)
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subq $0,1,$0
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subq $1,1,$1
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stq $31,8($16)
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stq $31,16($16)
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addq $17,64,$2
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nop
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stq $31,24($16)
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stq $31,32($16)
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cmovgt $1,$2,$17
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nop
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stq $31,40($16)
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stq $31,48($16)
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nop
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nop
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stq $31,56($16)
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addq $16,64,$16
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nop
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bne $0,1b
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ret
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nop
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nop
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nop
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.end clear_page
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