AsmMacroIoLibV8.h File Reference

Macros
#define	EL1_OR_EL2(SAFE_XREG)
#define	EL1_OR_EL2_OR_EL3(SAFE_XREG)
#define	_ASM_FUNC(Name, Section)
#define	ASM_FUNC(Name)   _ASM_FUNC(ASM_PFX(Name), .text. ## Name)
#define	MOV32(Reg, Val)
#define	MOV64(Reg, Val)

Detailed Description

Macros to work around lack of Clang support for LDR register, =expr

Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.
Portions copyright (c) 2011 - 2014, ARM Ltd. All rights reserved.
Copyright (c) 2016, Linaro Ltd. All rights reserved.

SPDX-License-Identifier: BSD-2-Clause-Patent

Macro Definition Documentation

#define _ASM_FUNC	(		Name,
			Section
	)

Value:

.global   Name                  ; \
  .section  #Section, "ax"        ; \
  .type     Name, %function       ; \
  Name:

#define ASM_FUNC

(

Name

)

_ASM_FUNC(ASM_PFX(Name), .text. ## Name)

#define EL1_OR_EL2

(

SAFE_XREG

)

Value:

mrs    SAFE_XREG, CurrentEL ;\
        cmp    SAFE_XREG, #0x8      ;\
        b.gt   .                    ;\
        b.eq   2f                   ;\
        cbnz   SAFE_XREG, 1f        ;\
        b      .                    ;

#define EL1_OR_EL2_OR_EL3

(

SAFE_XREG

)

Value:

mrs    SAFE_XREG, CurrentEL ;\
        cmp    SAFE_XREG, #0x8      ;\
        b.gt   3f                   ;\
        b.eq   2f                   ;\
        cbnz   SAFE_XREG, 1f        ;\
        b      .                    ;

#define MOV32	(		Reg,
			Val
	)

Value:

movz      Reg, (Val) >> 16, lsl #16   ; \
  movk      Reg, (Val) & 0xffff

#define MOV64	(		Reg,
			Val
	)

Value:

movz      Reg, (Val) >> 48, lsl #48             ; \
  movk      Reg, ((Val) >> 32) & 0xffff, lsl #32  ; \
  movk      Reg, ((Val) >> 16) & 0xffff, lsl #16  ; \
  movk      Reg, (Val) & 0xffff