diff options
Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Ia32/SwapBytes64.nasm')
| -rw-r--r-- | src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Ia32/SwapBytes64.nasm | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Ia32/SwapBytes64.nasm b/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Ia32/SwapBytes64.nasm new file mode 100644 index 00000000..f076be3d --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Ia32/SwapBytes64.nasm @@ -0,0 +1,34 @@ +;------------------------------------------------------------------------------ +; +; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR> +; SPDX-License-Identifier: BSD-2-Clause-Patent +; +; Module Name: +; +; CpuId.Asm +; +; Abstract: +; +; AsmCpuid function +; +; Notes: +; +;------------------------------------------------------------------------------ + + SECTION .text + +;------------------------------------------------------------------------------ +; UINT64 +; EFIAPI +; InternalMathSwapBytes64 ( +; IN UINT64 Operand +; ); +;------------------------------------------------------------------------------ +global ASM_PFX(InternalMathSwapBytes64) +ASM_PFX(InternalMathSwapBytes64): + mov eax, [esp + 8] ; eax <- upper 32 bits + mov edx, [esp + 4] ; edx <- lower 32 bits + bswap eax + bswap edx + ret + |