projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * arch/alpha/lib/ev6-clear_page.S | |
| 3 | * | |
| 4 | * Zero an entire page. | |
| 5 | */ | |
| 6 | ||
| 7 | .text | |
| 8 | .align 4 | |
| 9 | .global clear_page | |
| 10 | .ent clear_page | |
| 11 | clear_page: | |
| 12 | .prologue 0 | |
| 13 | ||
| 14 | lda $0,128 | |
| 15 | lda $1,125 | |
| 16 | addq $16,64,$2 | |
| 17 | addq $16,128,$3 | |
| 18 | ||
| 19 | addq $16,192,$17 | |
| 20 | wh64 ($16) | |
| 21 | wh64 ($2) | |
| 22 | wh64 ($3) | |
| 23 | ||
| 24 | 1: wh64 ($17) | |
| 25 | stq $31,0($16) | |
| 26 | subq $0,1,$0 | |
| 27 | subq $1,1,$1 | |
| 28 | ||
| 29 | stq $31,8($16) | |
| 30 | stq $31,16($16) | |
| 31 | addq $17,64,$2 | |
| 32 | nop | |
| 33 | ||
| 34 | stq $31,24($16) | |
| 35 | stq $31,32($16) | |
| 36 | cmovgt $1,$2,$17 | |
| 37 | nop | |
| 38 | ||
| 39 | stq $31,40($16) | |
| 40 | stq $31,48($16) | |
| 41 | nop | |
| 42 | nop | |
| 43 | ||
| 44 | stq $31,56($16) | |
| 45 | addq $16,64,$16 | |
| 46 | nop | |
| 47 | bne $0,1b | |
| 48 | ||
| 49 | ret | |
| 50 | nop | |
| 51 | nop | |
| 52 | nop | |
| 53 | ||
| 54 | .end clear_page |