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

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C

// ------------------------------------------------------------------------------
//
// Copyright (c) 2019, Pete Batard. All rights reserved.
// Copyright (c) 2021, Arm Limited. All rights reserved.<BR>
//
// SPDX-License-Identifier: BSD-2-Clause-Patent
//
// ------------------------------------------------------------------------------
#if defined (_M_ARM64)
typedef unsigned __int64 size_t;
#else
typedef unsigned __int32 size_t;
#endif
void *
memmove (
void *,
const void *,
size_t
);
#pragma intrinsic(memmove)
#pragma function(memmove)
void *
memmove (
void *dest,
const void *src,
size_t n
)
{
unsigned char *d;
unsigned char const *s;
d = dest;
s = src;
if (d < s) {
while (n-- != 0) {
*d++ = *s++;
}
} else {
d += n;
s += n;
while (n-- != 0) {
*--d = *--s;
}
}
return dest;
}