ArmPkg/Include/AsmMacroIoLib.h

   1 /** @file
   2   Macros to work around lack of Apple support for LDR register, =expr
   3
   4   Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   5   Copyright (c) 2011-2012, ARM Ltd. All rights reserved.<BR>
   6   Copyright (c) 2016, Linaro Ltd. All rights reserved.<BR>
   7
   8   SPDX-License-Identifier: BSD-2-Clause-Patent
   9
  10 **/
  11
  12 #ifndef ASM_MACRO_IO_LIB_H_
  13 #define ASM_MACRO_IO_LIB_H_
  14
  15 #define _ASM_FUNC(Name, Section)    \
  16   .global   Name                  ; \
  17   .section  #Section, "ax"        ; \
  18   .type     Name, %function       ; \
  19   .p2align  2                     ; \
  20   Name:
  21
  22 #define ASM_FUNC(Name)  _ASM_FUNC(ASM_PFX(Name), .text. ## Name)
  23
  24 #define MOV32(Reg, Val)                       \
  25   movw      Reg, #(Val) & 0xffff            ; \
  26   movt      Reg, #(Val) >> 16
  27
  28 #define ADRL(Reg, Sym)                        \
  29   movw      Reg, #:lower16:(Sym) - (. + 16) ; \
  30   movt      Reg, #:upper16:(Sym) - (. + 12) ; \
  31   add       Reg, Reg, pc
  32
  33 #define LDRL(Reg, Sym)                        \
  34   movw      Reg, #:lower16:(Sym) - (. + 16) ; \
  35   movt      Reg, #:upper16:(Sym) - (. + 12) ; \
  36   ldr       Reg, [pc, Reg]
  37
  38 #endif // ASM_MACRO_IO_LIB_H_