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| author | Jeff Brasen <jbrasen@nvidia.com> | 2024-01-30 15:05:08 -0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2024-06-15 08:53:17 +0000 |
| commit | d8095b36abc521970dd930449a8ae8ddc431314c (patch) | |
| tree | d4ba7144af32358ad9ac8a41c4d8c2a48070657d /ArmPkg | |
| parent | a84876ba283176eb683dc84274bc6c66faffc7a0 (diff) | |
| download | edk2-d8095b36abc521970dd930449a8ae8ddc431314c.tar.gz edk2-d8095b36abc521970dd930449a8ae8ddc431314c.tar.bz2 edk2-d8095b36abc521970dd930449a8ae8ddc431314c.zip | |
ArmPkg/CompilerIntrinsicsLib: provide __ashlti3
The compiler will use this function if it is
left shifting a 128 bit value.
Seen when updating OpenSSL.
Signed-off-by: Jeff Brasen <jbrasen@nvidia.com>
Diffstat (limited to 'ArmPkg')
| -rw-r--r-- | ArmPkg/Library/CompilerIntrinsicsLib/AArch64/ashlti3.S | 33 | ||||
| -rw-r--r-- | ArmPkg/Library/CompilerIntrinsicsLib/CompilerIntrinsicsLib.inf | 1 |
2 files changed, 34 insertions, 0 deletions
diff --git a/ArmPkg/Library/CompilerIntrinsicsLib/AArch64/ashlti3.S b/ArmPkg/Library/CompilerIntrinsicsLib/AArch64/ashlti3.S new file mode 100644 index 0000000000..79a7b3514c --- /dev/null +++ b/ArmPkg/Library/CompilerIntrinsicsLib/AArch64/ashlti3.S @@ -0,0 +1,33 @@ +#------------------------------------------------------------------------------
+#
+# Copyright (c) 2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#------------------------------------------------------------------------------
+
+#include <AsmMacroIoLib.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
diff --git a/ArmPkg/Library/CompilerIntrinsicsLib/CompilerIntrinsicsLib.inf b/ArmPkg/Library/CompilerIntrinsicsLib/CompilerIntrinsicsLib.inf index 7e22e6f67b..054e681307 100644 --- a/ArmPkg/Library/CompilerIntrinsicsLib/CompilerIntrinsicsLib.inf +++ b/ArmPkg/Library/CompilerIntrinsicsLib/CompilerIntrinsicsLib.inf @@ -66,6 +66,7 @@ [Sources.AARCH64]
AArch64/Atomics.S | GCC
+ AArch64/ashlti3.S | GCC
[Packages]
MdePkg/MdePkg.dec
|