1 files changed, 39 insertions, 0 deletions
diff --git a/roms/edk2/ArmPkg/Include/AsmMacroIoLib.h b/roms/edk2/ArmPkg/Include/AsmMacroIoLib.h
new file mode 100644
index 000000000..e3576c8be
--- /dev/null
+++ b/roms/edk2/ArmPkg/Include/AsmMacroIoLib.h
@@ -0,0 +1,39 @@
+/** @file
+  Macros to work around lack of Apple support for LDR register, =expr
+
+  Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+  Copyright (c) 2011-2012, ARM Ltd. All rights reserved.<BR>
+  Copyright (c) 2016, Linaro Ltd. All rights reserved.<BR>
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+
+#ifndef __MACRO_IO_LIB_H__
+#define __MACRO_IO_LIB_H__
+
+#define _ASM_FUNC(Name, Section)    \
+  .global   Name                  ; \
+  .section  #Section, "ax"        ; \
+  .type     Name, %function       ; \
+  .p2align  2                     ; \
+  Name:
+
+#define ASM_FUNC(Name)            _ASM_FUNC(ASM_PFX(Name), .text. ## Name)
+
+#define MOV32(Reg, Val)                       \
+  movw      Reg, #(Val) & 0xffff            ; \
+  movt      Reg, #(Val) >> 16
+
+#define ADRL(Reg, Sym)                        \
+  movw      Reg, #:lower16:(Sym) - (. + 16) ; \
+  movt      Reg, #:upper16:(Sym) - (. + 12) ; \
+  add       Reg, Reg, pc
+
+#define LDRL(Reg, Sym)                        \
+  movw      Reg, #:lower16:(Sym) - (. + 16) ; \
+  movt      Reg, #:upper16:(Sym) - (. + 12) ; \
+  ldr       Reg, [pc, Reg]
+
+#endif