Adding support for BeagleBoard.

[mirror_edk2.git] / ArmPkg / Library / CompilerIntrinsicsLib / Arm / lshrdi3.S

diff --git a/ArmPkg/Library/CompilerIntrinsicsLib/Arm/lshrdi3.S b/ArmPkg/Library/CompilerIntrinsicsLib/Arm/lshrdi3.S
new file mode 100644 (file)
index 0000000..2257dee
--- /dev/null
+++ b/ArmPkg/Library/CompilerIntrinsicsLib/Arm/lshrdi3.S
@@ -0,0 +1,38 @@
+#------------------------------------------------------------------------------ 
+#
+# Copyright (c) 2008-2009 Apple Inc. All rights reserved.
+#
+# All rights reserved. This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution.  The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+#------------------------------------------------------------------------------
+
+       .text
+       .align 2
+       .globl ___lshrdi3
+___lshrdi3:
+       @ args = 0, pretend = 0, frame = 0
+       @ frame_needed = 0, uses_anonymous_args = 0
+       @ link register save eliminated.
+       cmp     r2, #31
+       @ lr needed for prologue
+       bls     L2
+       cmp     r2, #63
+       subls   r2, r2, #32
+       movls   r2, r1, lsr r2
+       movhi   r2, #0
+       mov     r0, r2
+       mov     r1, #0
+       bx      lr
+L2:
+       cmp     r2, #0
+       rsbne   r3, r2, #32
+       movne   r3, r1, asl r3
+       movne   r1, r1, lsr r2
+       orrne   r0, r3, r0, lsr r2
+       bx      lr