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| author | Oliver Smith-Denny <osde@linux.microsoft.com> | 2024-08-05 10:25:07 -0700 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2024-09-12 19:36:59 +0000 |
| commit | 8f74b95a21cf106fa4eb4932e22b404c57297ba2 (patch) | |
| tree | 378f21f82997945b07d8149d79f12cf059342aa8 /MdePkg/Library/CompilerIntrinsicsLib/memcmp_ms.c | |
| parent | 734e71f428a4fdac5d82ae9c093911053356f6ff (diff) | |
| download | edk2-8f74b95a21cf106fa4eb4932e22b404c57297ba2.tar.gz edk2-8f74b95a21cf106fa4eb4932e22b404c57297ba2.tar.bz2 edk2-8f74b95a21cf106fa4eb4932e22b404c57297ba2.zip | |
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>
Diffstat (limited to 'MdePkg/Library/CompilerIntrinsicsLib/memcmp_ms.c')
| -rw-r--r-- | MdePkg/Library/CompilerIntrinsicsLib/memcmp_ms.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/MdePkg/Library/CompilerIntrinsicsLib/memcmp_ms.c b/MdePkg/Library/CompilerIntrinsicsLib/memcmp_ms.c new file mode 100644 index 0000000000..cedbfca471 --- /dev/null +++ b/MdePkg/Library/CompilerIntrinsicsLib/memcmp_ms.c @@ -0,0 +1,48 @@ +// ------------------------------------------------------------------------------
+//
+// 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
+
+int
+memcmp (
+ void *,
+ void *,
+ size_t
+ );
+
+#pragma intrinsic(memcmp)
+#pragma function(memcmp)
+int
+memcmp (
+ const void *s1,
+ const void *s2,
+ size_t n
+ )
+{
+ unsigned char const *t1;
+ unsigned char const *t2;
+
+ t1 = s1;
+ t2 = s2;
+
+ while (n-- != 0) {
+ if (*t1 != *t2) {
+ return (int)*t1 - (int)*t2;
+ }
+
+ t1++;
+ t2++;
+ }
+
+ return 0;
+}
|