diff options
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 0000000..79a7b35 --- /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 7e22e6f..054e681 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
|