mirror of https://github.com/acidanthera/audk.git
17 lines
269 B
NASM
17 lines
269 B
NASM
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SECTION .text
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; INT32
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; EFIAPI
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; TestAndClearBit (
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; IN INT32 Bit,
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; IN volatile VOID* Address
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; );
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global ASM_PFX(TestAndClearBit)
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ASM_PFX(TestAndClearBit):
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mov ecx, [esp + 4]
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mov edx, [esp + 8]
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lock btr [edx], ecx
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sbb eax, eax
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ret
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