X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=ArmPkg%2FLibrary%2FCompilerIntrinsicsLib%2FArm%2Furead.S;fp=ArmPkg%2FLibrary%2FCompilerIntrinsicsLib%2FArm%2Furead.S;h=e8a1dbad86929c8787cf20508868901fa1139b3b;hp=0000000000000000000000000000000000000000;hb=96ef5a8e30a8da33eaab09f13cc8d752342717a5;hpb=d039044be43d69f4f2775ed0b30e952aa0ee4c00

diff --git a/ArmPkg/Library/CompilerIntrinsicsLib/Arm/uread.S b/ArmPkg/Library/CompilerIntrinsicsLib/Arm/uread.S
new file mode 100644
index 0000000000..e8a1dbad86
--- /dev/null
+++ b/ArmPkg/Library/CompilerIntrinsicsLib/Arm/uread.S
@@ -0,0 +1,54 @@
+#------------------------------------------------------------------------------
+#
+# Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#------------------------------------------------------------------------------
+
+#include <AsmMacroIoLib.h>
+
+#
+#UINT32
+#EFIAPI
+#__aeabi_uread4 (
+#  IN VOID   *Pointer
+#  );
+#
+ASM_FUNC(__aeabi_uread4)
+    ldrb    r1, [r0]
+    ldrb    r2, [r0, #1]
+    ldrb    r3, [r0, #2]
+    ldrb    r0, [r0, #3]
+    orr     r1, r1, r2, lsl #8
+    orr     r1, r1, r3, lsl #16
+    orr     r0, r1, r0, lsl #24
+    bx      lr
+
+#
+#UINT64
+#EFIAPI
+#__aeabi_uread8 (
+#  IN VOID   *Pointer
+#  );
+#
+ASM_FUNC(__aeabi_uread8)
+    mov     r3, r0
+
+    ldrb    r1, [r3]
+    ldrb    r2, [r3, #1]
+    orr     r1, r1, r2, lsl #8
+    ldrb    r2, [r3, #2]
+    orr     r1, r1, r2, lsl #16
+    ldrb    r0, [r3, #3]
+    orr     r0, r1, r0, lsl #24
+
+    ldrb    r1, [r3, #4]
+    ldrb    r2, [r3, #5]
+    orr     r1, r1, r2, lsl #8
+    ldrb    r2, [r3, #6]
+    orr     r1, r1, r2, lsl #16
+    ldrb    r2, [r3, #7]
+    orr     r1, r1, r2, lsl #24
+
+    bx      lr