diff options
Diffstat (limited to 'MdePkg/Library/CompilerIntrinsicsLib/Arm/switch32.S')
| -rw-r--r-- | MdePkg/Library/CompilerIntrinsicsLib/Arm/switch32.S | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/MdePkg/Library/CompilerIntrinsicsLib/Arm/switch32.S b/MdePkg/Library/CompilerIntrinsicsLib/Arm/switch32.S new file mode 100644 index 0000000000..040d65d6dc --- /dev/null +++ b/MdePkg/Library/CompilerIntrinsicsLib/Arm/switch32.S @@ -0,0 +1,23 @@ +#/** @file
+# Compiler intrinsic for ARM compiler
+#
+# Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#**/
+#
+
+#include <AsmMacroLib.h>
+
+.syntax unified
+
+ASM_FUNC(__switch32)
+ ldr ip, [lr, #-1]
+ cmp r0, ip
+ add r0, lr, r0, lsl #2
+ ldrcc r0, [r0, #3]
+ add ip, lr, ip, lsl #2
+ ldrcs r0, [ip, #3]
+ add ip, lr, r0
+ bx ip
+
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