1 files changed, 51 insertions, 0 deletions
diff --git a/MdePkg/Library/CompilerIntrinsicsLib/Arm/udivsi3.S b/MdePkg/Library/CompilerIntrinsicsLib/Arm/udivsi3.S
new file mode 100644
index 0000000000..100a6a00d8
--- /dev/null
+++ b/MdePkg/Library/CompilerIntrinsicsLib/Arm/udivsi3.S
@@ -0,0 +1,51 @@
+#------------------------------------------------------------------------------
+#
+# Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#------------------------------------------------------------------------------
+
+#include <AsmMacroLib.h>
+
+  .syntax unified
+
+ASM_FUNC(__udivsi3)
+  cmp  r1, #0
+  cmpne  r0, #0
+  stmfd  sp!, {r4, r5, r7, lr}
+  add  r7, sp, #8
+  beq  L2
+  clz  r2, r1
+  clz  r3, r0
+  rsb  r3, r3, r2
+  cmp  r3, #31
+  bhi  L2
+  ldmfdeq  sp!, {r4, r5, r7, pc}
+  add  r5, r3, #1
+  rsb  r3, r3, #31
+  mov  lr, #0
+  mov  r2, r0, asl r3
+  mov  ip, r0, lsr r5
+  mov  r4, lr
+  b  L8
+L9:
+  mov  r0, r2, lsr #31
+  orr  ip, r0, ip, asl #1
+  orr  r2, r3, lr
+  rsb  r3, ip, r1
+  sub  r3, r3, #1
+  and  r0, r1, r3, asr #31
+  mov  lr, r3, lsr #31
+  rsb  ip, r0, ip
+  add  r4, r4, #1
+L8:
+  cmp  r4, r5
+  mov  r3, r2, asl #1
+  bne  L9
+  orr  r0, r3, lr
+  ldmfd  sp!, {r4, r5, r7, pc}
+L2:
+  mov  r0, #0
+  ldmfd  sp!, {r4, r5, r7, pc}
+