/** @file
|
Macros to work around lack of Clang support for LDR register, =expr
|
|
Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
|
Portions copyright (c) 2011 - 2014, ARM Ltd. All rights reserved.<BR>
|
Copyright (c) 2016, Linaro Ltd. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
**/
|
|
|
#ifndef ASM_MACRO_IO_LIBV8_H_
|
#define ASM_MACRO_IO_LIBV8_H_
|
|
// CurrentEL : 0xC = EL3; 8 = EL2; 4 = EL1
|
// This only selects between EL1 and EL2, else we die.
|
// Provide the Macro with a safe temp xreg to use.
|
#define EL1_OR_EL2(SAFE_XREG) \
|
mrs SAFE_XREG, CurrentEL ;\
|
cmp SAFE_XREG, #0x8 ;\
|
b.gt . ;\
|
b.eq 2f ;\
|
cbnz SAFE_XREG, 1f ;\
|
b . ;// We should never get here
|
|
|
// CurrentEL : 0xC = EL3; 8 = EL2; 4 = EL1
|
// This only selects between EL1 and EL2 and EL3, else we die.
|
// Provide the Macro with a safe temp xreg to use.
|
#define EL1_OR_EL2_OR_EL3(SAFE_XREG) \
|
mrs SAFE_XREG, CurrentEL ;\
|
cmp SAFE_XREG, #0x8 ;\
|
b.gt 3f ;\
|
b.eq 2f ;\
|
cbnz SAFE_XREG, 1f ;\
|
b . ;// We should never get here
|
|
#define _ASM_FUNC(Name, Section) \
|
.global Name ; \
|
.section #Section, "ax" ; \
|
.type Name, %function ; \
|
Name:
|
|
#define ASM_FUNC(Name) _ASM_FUNC(ASM_PFX(Name), .text. ## Name)
|
|
#define MOV32(Reg, Val) \
|
movz Reg, (Val) >> 16, lsl #16 ; \
|
movk Reg, (Val) & 0xffff
|
|
#define MOV64(Reg, Val) \
|
movz Reg, (Val) >> 48, lsl #48 ; \
|
movk Reg, ((Val) >> 32) & 0xffff, lsl #32 ; \
|
movk Reg, ((Val) >> 16) & 0xffff, lsl #16 ; \
|
movk Reg, (Val) & 0xffff
|
|
#endif // ASM_MACRO_IO_LIBV8_H_
|
