57 lines
1.1 KiB
ArmAsm
57 lines
1.1 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2012 ARM Ltd.
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*/
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/*
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* Copy a page from src to dest (both are page aligned)
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*
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* Parameters:
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* x0 - dest
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* x1 - src
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*/
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ldp1 x2, x3, x1, #0
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ldp1 x4, x5, x1, #16
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ldp1 x6, x7, x1, #32
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ldp1 x8, x9, x1, #48
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ldp1 x10, x11, x1, #64
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ldp1 x12, x13, x1, #80
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ldp1 x14, x15, x1, #96
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ldp1 x16, x17, x1, #112
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add x0, x0, #256
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add x1, x1, #128
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1:
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tst x0, #(PAGE_SIZE - 1)
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stnp x2, x3, [x0, #-256]
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ldp1 x2, x3, x1, #0
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stnp x4, x5, [x0, #16 - 256]
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ldp1 x4, x5, x1, #16
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stnp x6, x7, [x0, #32 - 256]
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ldp1 x6, x7, x1, #32
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stnp x8, x9, [x0, #48 - 256]
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ldp1 x8, x9, x1, #48
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stnp x10, x11, [x0, #64 - 256]
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ldp1 x10, x11, x1, #64
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stnp x12, x13, [x0, #80 - 256]
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ldp1 x12, x13, x1, #80
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stnp x14, x15, [x0, #96 - 256]
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ldp1 x14, x15, x1, #96
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stnp x16, x17, [x0, #112 - 256]
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ldp1 x16, x17, x1, #112
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add x0, x0, #128
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add x1, x1, #128
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b.ne 1b
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stnp x2, x3, [x0, #-256]
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stnp x4, x5, [x0, #16 - 256]
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stnp x6, x7, [x0, #32 - 256]
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stnp x8, x9, [x0, #48 - 256]
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stnp x10, x11, [x0, #64 - 256]
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stnp x12, x13, [x0, #80 - 256]
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stnp x14, x15, [x0, #96 - 256]
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stnp x16, x17, [x0, #112 - 256]
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