diff options
Diffstat (limited to '')
| -rw-r--r-- | src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Arm/GetInterruptsState.S | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Arm/GetInterruptsState.S b/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Arm/GetInterruptsState.S new file mode 100644 index 00000000..8ba255bc --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Arm/GetInterruptsState.S @@ -0,0 +1,37 @@ +#------------------------------------------------------------------------------ +# +# GetInterruptState() function for ARM +# +# Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> +# Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +#------------------------------------------------------------------------------ + +.text +.p2align 2 +GCC_ASM_EXPORT (GetInterruptState) + +#/** +# Retrieves the current CPU interrupt state. +# +# Returns TRUE is interrupts are currently enabled. Otherwise +# returns FALSE. +# +# @retval TRUE CPU interrupts are enabled. +# @retval FALSE CPU interrupts are disabled. +# +#**/ +# +#BOOLEAN +#EFIAPI +#GetInterruptState ( +# VOID +# ); +# +ASM_PFX(GetInterruptState): + mrs R0, CPSR + tst R0, #0x80 @Check if IRQ is enabled. + moveq R0, #1 + movne R0, #0 + bx LR |