[mirror_edk2.git] / ArmPkg / Include / AsmMacroIoLib.h

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