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
  13 #ifndef ASM_MACRO_IO_LIB_H_
  14 #define ASM_MACRO_IO_LIB_H_
  15
  16 #define _ASM_FUNC(Name, Section)    \
  17   .global   Name                  ; \
  18   .section  #Section, "ax"        ; \
  19   .type     Name, %function       ; \
  20   .p2align  2                     ; \
  21   Name:
  22
  23 #define ASM_FUNC(Name)            _ASM_FUNC(ASM_PFX(Name), .text. ## Name)
  24
  25 #define MOV32(Reg, Val)                       \
  26   movw      Reg, #(Val) & 0xffff            ; \
  27   movt      Reg, #(Val) >> 16
  28
  29 #define ADRL(Reg, Sym)                        \
  30   movw      Reg, #:lower16:(Sym) - (. + 16) ; \
  31   movt      Reg, #:upper16:(Sym) - (. + 12) ; \
  32   add       Reg, Reg, pc
  33
  34 #define LDRL(Reg, Sym)                        \
  35   movw      Reg, #:lower16:(Sym) - (. + 16) ; \
  36   movt      Reg, #:upper16:(Sym) - (. + 12) ; \
  37   ldr       Reg, [pc, Reg]
  38
  39 #endif // ASM_MACRO_IO_LIB_H_