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58 lines
1.5 KiB
58 lines
1.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* NG4copy_page.S: Niagara-4 optimized copy page. |
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* |
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* Copyright (C) 2012 (davem@davemloft.net) |
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*/ |
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#include <asm/asi.h> |
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#include <asm/page.h> |
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.text |
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.align 32 |
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.register %g2, #scratch |
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.register %g3, #scratch |
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.globl NG4copy_user_page |
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NG4copy_user_page: /* %o0=dest, %o1=src, %o2=vaddr */ |
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prefetch [%o1 + 0x000], #n_reads_strong |
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prefetch [%o1 + 0x040], #n_reads_strong |
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prefetch [%o1 + 0x080], #n_reads_strong |
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prefetch [%o1 + 0x0c0], #n_reads_strong |
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set PAGE_SIZE, %g7 |
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prefetch [%o1 + 0x100], #n_reads_strong |
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prefetch [%o1 + 0x140], #n_reads_strong |
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prefetch [%o1 + 0x180], #n_reads_strong |
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prefetch [%o1 + 0x1c0], #n_reads_strong |
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1: |
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ldx [%o1 + 0x00], %o2 |
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subcc %g7, 0x40, %g7 |
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ldx [%o1 + 0x08], %o3 |
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ldx [%o1 + 0x10], %o4 |
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ldx [%o1 + 0x18], %o5 |
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ldx [%o1 + 0x20], %g1 |
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stxa %o2, [%o0] ASI_ST_BLKINIT_MRU_P |
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add %o0, 0x08, %o0 |
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ldx [%o1 + 0x28], %g2 |
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stxa %o3, [%o0] ASI_ST_BLKINIT_MRU_P |
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add %o0, 0x08, %o0 |
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ldx [%o1 + 0x30], %g3 |
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stxa %o4, [%o0] ASI_ST_BLKINIT_MRU_P |
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add %o0, 0x08, %o0 |
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ldx [%o1 + 0x38], %o2 |
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add %o1, 0x40, %o1 |
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stxa %o5, [%o0] ASI_ST_BLKINIT_MRU_P |
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add %o0, 0x08, %o0 |
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stxa %g1, [%o0] ASI_ST_BLKINIT_MRU_P |
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add %o0, 0x08, %o0 |
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stxa %g2, [%o0] ASI_ST_BLKINIT_MRU_P |
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add %o0, 0x08, %o0 |
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stxa %g3, [%o0] ASI_ST_BLKINIT_MRU_P |
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add %o0, 0x08, %o0 |
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stxa %o2, [%o0] ASI_ST_BLKINIT_MRU_P |
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add %o0, 0x08, %o0 |
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bne,pt %icc, 1b |
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prefetch [%o1 + 0x200], #n_reads_strong |
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retl |
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membar #StoreLoad | #StoreStore |
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.size NG4copy_user_page,.-NG4copy_user_page
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