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/** @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: ; \
AARCH64_BTI(c)
#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_
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