ArmPkg/CompilerIntrinsincsLib: Add div and mullu functions to ARMGCC

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11742 6f19259b-4bc3-4df7-8a09-765794883524

ArmPkg/Library/CompilerIntrinsicsLib/Arm/mullu.S

@@ -0,0 +1,46 @@
+#------------------------------------------------------------------------------ 
+#
+# Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+#
+# 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
+
+GCC_ASM_EXPORT(__ARM_ll_mullu)
+GCC_ASM_EXPORT(__aeabi_lmul)
+#
+#INT64
+#EFIAPI
+#__aeabi_lmul (
+#  IN INT64   Multiplicand
+#  IN INT32   Multiplier
+#  );
+#
+ASM_PFX(__ARM_ll_mullu):
+  mov     r3, #0
+# Make upper part of INT64 Multiplier 0 and use __aeabi_lmul
+
+#
+#INT64
+#EFIAPI
+#__aeabi_lmul (
+#  IN INT64   Multiplicand
+#  IN INT64   Multiplier
+#  );
+#
+ASM_PFX(__aeabi_lmul):
+  stmdb   sp!, {lr}
+  mov     lr, r0
+  umull   r0, ip, r2, lr
+  mla     r1, r2, r1, ip
+  mla     r1, r3, lr, r1
+  ldmia   sp!, {pc}
+  
+.end