mirror of https://github.com/acidanthera/audk.git
123 lines
2.4 KiB
ArmAsm
123 lines
2.4 KiB
ArmAsm
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#------------------------------------------------------------------------------
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#
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# LoongArch synchronization ASM functions.
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#
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# Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>
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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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ASM_GLOBAL ASM_PFX(AsmInternalSyncCompareExchange16)
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ASM_GLOBAL ASM_PFX(AsmInternalSyncCompareExchange32)
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ASM_GLOBAL ASM_PFX(AsmInternalSyncCompareExchange64)
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ASM_GLOBAL ASM_PFX(AsmInternalSyncIncrement)
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ASM_GLOBAL ASM_PFX(AsmInternalSyncDecrement)
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/**
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UINT32
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EFIAPI
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AsmInternalSyncCompareExchange16 (
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IN volatile UINT32 *Ptr32,
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IN UINT64 Mask,
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IN UINT64 LocalCompareValue,
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IN UINT64 LocalExchangeValue
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)
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**/
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ASM_PFX(AsmInternalSyncCompareExchange16):
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1:
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ll.w $t0, $a0, 0x0
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and $t1, $t0, $a1
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bne $t1, $a2, 2f
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andn $t1, $t0, $a1
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or $t1, $t1, $a3
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sc.w $t1, $a0, 0x0
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beqz $t1, 1b
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b 3f
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2:
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dbar 0
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3:
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move $a0, $t0
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jirl $zero, $ra, 0
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/**
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UINT32
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EFIAPI
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AsmInternalSyncCompareExchange32 (
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IN volatile UINT32 *Value,
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IN UINT64 CompareValue,
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IN UINT64 ExchangeValue
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)
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**/
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ASM_PFX(AsmInternalSyncCompareExchange32):
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1:
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ll.w $t0, $a0, 0x0
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bne $t0, $a1, 2f
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move $t0, $a2
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sc.w $t0, $a0, 0x0
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beqz $t0, 1b
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b 3f
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2:
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dbar 0
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3:
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move $a0, $t0
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jirl $zero, $ra, 0
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/**
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UINT64
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EFIAPI
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AsmInternalSyncCompareExchange64 (
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IN volatile UINT64 *Value,
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IN UINT64 CompareValue,
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IN UINT64 ExchangeValue
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)
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**/
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ASM_PFX(AsmInternalSyncCompareExchange64):
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1:
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ll.d $t0, $a0, 0x0
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bne $t0, $a1, 2f
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move $t0, $a2
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sc.d $t0, $a0, 0x0
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beqz $t0, 1b
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b 3f
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2:
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dbar 0
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3:
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move $a0, $t0
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jirl $zero, $ra, 0
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/**
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UINT32
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EFIAPI
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AsmInternalSyncIncrement (
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IN volatile UINT32 *Value
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)
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**/
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ASM_PFX(AsmInternalSyncIncrement):
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move $t0, $a0
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dbar 0
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ld.w $t1, $t0, 0x0
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li.w $t2, 1
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amadd.w $t1, $t2, $t0
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ld.w $a0, $t0, 0x0
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jirl $zero, $ra, 0
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/**
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UINT32
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EFIAPI
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AsmInternalSyncDecrement (
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IN volatile UINT32 *Value
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)
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**/
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ASM_PFX(AsmInternalSyncDecrement):
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move $t0, $a0
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dbar 0
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ld.w $t1, $t0, 0x0
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li.w $t2, -1
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amadd.w $t1, $t2, $t0
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ld.w $a0, $t0, 0x0
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jirl $zero, $ra, 0
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.end
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