| /* NG4copy_page.S: Niagara-4 optimized clear page. | |
| * | |
| * Copyright (C) 2012 (davem@davemloft.net) | |
| */ | |
| #include <asm/asi.h> | |
| #include <asm/page.h> | |
| .text | |
| .register %g3, #scratch | |
| .align 32 | |
| .globl NG4clear_page | |
| .globl NG4clear_user_page | |
| NG4clear_page: /* %o0=dest */ | |
| NG4clear_user_page: /* %o0=dest, %o1=vaddr */ | |
| set PAGE_SIZE, %g7 | |
| mov 0x20, %g3 | |
| 1: stxa %g0, [%o0 + %g0] ASI_ST_BLKINIT_MRU_P | |
| subcc %g7, 0x40, %g7 | |
| stxa %g0, [%o0 + %g3] ASI_ST_BLKINIT_MRU_P | |
| bne,pt %xcc, 1b | |
| add %o0, 0x40, %o0 | |
| membar #StoreLoad|#StoreStore | |
| retl | |
| nop | |
| .size NG4clear_page,.-NG4clear_page | |
| .size NG4clear_user_page,.-NG4clear_user_page |