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https://github.com/CloverHackyColor/CloverBootloader.git
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40 lines
965 B
NASM
40 lines
965 B
NASM
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;------------------------------------------------------------------------------
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;
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; GetInterruptState() function for ARM
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;
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; Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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; Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
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; SPDX-License-Identifier: BSD-2-Clause-Patent
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;
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;------------------------------------------------------------------------------
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EXPORT GetInterruptState
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AREA Interrupt_enable, CODE, READONLY
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;/**
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; Retrieves the current CPU interrupt state.
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;
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; Returns TRUE is interrupts are currently enabled. Otherwise
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; returns FALSE.
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;
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; @retval TRUE CPU interrupts are enabled.
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; @retval FALSE CPU interrupts are disabled.
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;
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;**/
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;
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;BOOLEAN
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;EFIAPI
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;GetInterruptState (
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; VOID
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; );
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;
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GetInterruptState
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MRS R0, CPSR
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TST R0, #0x80 ;Check if IRQ is enabled.
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MOVEQ R0, #1
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MOVNE R0, #0
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BX LR
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END
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