Oliver Smith-Denny 8f74b95a21 MdePkg: Move CompilerIntrinsicsLib from ArmPkg
As per the emailed RFC in
https://edk2.groups.io/g/devel/topic/rfc_move/107675828,
this patch moves CompilerIntrinsicsLib from ArmPkg to
MdePkg as this library provides compiler intrinsics, which
are industry standard.

This aligns with the goal of integrating ArmPkg into existing
packages: https://bugzilla.tianocore.org/show_bug.cgi?id=4121.

The newly placed CompilerIntrinsicsLib is added to MdeLibs.dsc.inc
as every DSC that builds ARM/AARCH64 needs this library added. The
old location is removed from every DSC in edk2 in this commit also
to not break bisectability with minimal hoop jumping.

Continuous-integration-options: PatchCheck.ignore-multi-package

Signed-off-by: Oliver Smith-Denny <osde@linux.microsoft.com>
2024-09-12 19:36:59 +00:00

34 lines
634 B
ArmAsm

#------------------------------------------------------------------------------
#
# Copyright (c) 2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
#------------------------------------------------------------------------------
#include <AsmMacroLib.h>
ASM_FUNC(__ashlti3)
# return if shift is 0
cbz x2, 1f
mov x3, #64
sub x3, x3, x2
cmp x3, #0
b.le 2f
# shift is <= 64 bits
lsr x3, x0, x3
lsl x1, x1, x2
orr x1, x1, x3
lsl x0, x0, x2
1:
ret
2:
# shift is > 64
neg w3, w3
lsl x1, x0, x3
mov x0, #0
ret