Home | History | Annotate | Line # | Download | only in include
asm.h revision 1.6 
      1  1.6     skrll /* $NetBSD: asm.h,v 1.6 2020/01/19 16:12:56 skrll Exp $ */
      2  1.1      matt 
      3  1.1      matt #ifndef _AARCH64_ASM_H_
      4  1.1      matt #define _AARCH64_ASM_H_
      5  1.1      matt 
      6  1.1      matt #include <arm/asm.h>
      7  1.1      matt 
      8  1.4     joerg #ifdef __aarch64__
      9  1.6     skrll 
     10  1.6     skrll #ifdef __ASSEMBLER__
     11  1.6     skrll .macro	adrl 	reg, addr
     12  1.6     skrll 	adrp	\reg, \addr
     13  1.6     skrll 	add	\reg, \reg, #:lo12:\addr
     14  1.6     skrll .endm
     15  1.6     skrll #endif
     16  1.6     skrll 
     17  1.3  christos #define	fp	x29
     18  1.3  christos #define	lr	x30
     19  1.5       ryo 
     20  1.5       ryo /*
     21  1.5       ryo  * Add a speculation barrier after the 'eret'.
     22  1.5       ryo  * Some aarch64 cpus speculatively execute instructions after 'eret',
     23  1.5       ryo  * and this potentiates side-channel attacks.
     24  1.5       ryo  */
     25  1.5       ryo #define	ERET	\
     26  1.5       ryo 	eret; dsb sy; isb
     27  1.5       ryo 
     28  1.4     joerg #endif
     29  1.3  christos 
     30  1.1      matt #endif /* !_AARCH64_ASM_H_ */
     31