diff options
| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:17:27 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:17:27 +0000 |
| commit | f215e02bf85f68d3a6106c2a1f4f7f063f819064 (patch) | |
| tree | 6bb5b92c046312c4e95ac2620b10ddf482d3fa8b /src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseMemoryLibSse2/Ia32/ZeroMem.nasm | |
| parent | Initial commit. (diff) | |
| download | virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.tar.xz virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.zip | |
Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseMemoryLibSse2/Ia32/ZeroMem.nasm')
| -rw-r--r-- | src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseMemoryLibSse2/Ia32/ZeroMem.nasm | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseMemoryLibSse2/Ia32/ZeroMem.nasm b/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseMemoryLibSse2/Ia32/ZeroMem.nasm new file mode 100644 index 00000000..f67fd178 --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseMemoryLibSse2/Ia32/ZeroMem.nasm @@ -0,0 +1,62 @@ +;------------------------------------------------------------------------------ +; +; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR> +; SPDX-License-Identifier: BSD-2-Clause-Patent +; +; Module Name: +; +; ZeroMem.nasm +; +; Abstract: +; +; ZeroMem function +; +; Notes: +; +;------------------------------------------------------------------------------ + + SECTION .text + +;------------------------------------------------------------------------------ +; VOID * +; EFIAPI +; InternalMemZeroMem ( +; IN VOID *Buffer, +; IN UINTN Count +; ); +;------------------------------------------------------------------------------ +global ASM_PFX(InternalMemZeroMem) +ASM_PFX(InternalMemZeroMem): + push edi + mov edi, [esp + 8] + mov edx, [esp + 12] + xor ecx, ecx + sub ecx, edi + xor eax, eax + and ecx, 63 + jz .0 + cmp ecx, edx + cmova ecx, edx + sub edx, ecx + rep stosb +.0: + mov ecx, edx + and edx, 63 + shr ecx, 6 + jz @ZeroBytes + pxor xmm0, xmm0 +.1: + movntdq [edi], xmm0 + movntdq [edi + 16], xmm0 + movntdq [edi + 32], xmm0 + movntdq [edi + 48], xmm0 + add edi, 64 + loop .1 + mfence +@ZeroBytes: + mov ecx, edx + rep stosb + mov eax, [esp + 8] + pop edi + ret + |