mirror of https://github.com/acidanthera/audk.git
34 lines
634 B
ArmAsm
34 lines
634 B
ArmAsm
#------------------------------------------------------------------------------
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#
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# Copyright (c) 2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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#
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# SPDX-License-Identifier: BSD-2-Clause-Patent
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#
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#------------------------------------------------------------------------------
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#include <AsmMacroLib.h>
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ASM_FUNC(__ashlti3)
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# return if shift is 0
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cbz x2, 1f
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mov x3, #64
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sub x3, x3, x2
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cmp x3, #0
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b.le 2f
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# shift is <= 64 bits
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lsr x3, x0, x3
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lsl x1, x1, x2
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orr x1, x1, x3
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lsl x0, x0, x2
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1:
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ret
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2:
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# shift is > 64
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neg w3, w3
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lsl x1, x0, x3
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mov x0, #0
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ret
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