Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) #ifndef __ASM_LINKAGE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #define __ASM_LINKAGE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #define __ALIGN		.align 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #define __ALIGN_STR	".align 2"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #if defined(CONFIG_ARM64_BTI_KERNEL) && defined(__aarch64__)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  * Since current versions of gas reject the BTI instruction unless we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  * set the architecture version to v8.5 we use the hint instruction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  * instead.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define BTI_C hint 34 ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  * When using in-kernel BTI we need to ensure that PCS-conformant assembly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  * functions have suitable annotations.  Override SYM_FUNC_START to insert
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  * a BTI landing pad at the start of everything.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define SYM_FUNC_START(name)				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	SYM_START(name, SYM_L_GLOBAL, SYM_A_ALIGN)	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	BTI_C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define SYM_FUNC_START_NOALIGN(name)			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	SYM_START(name, SYM_L_GLOBAL, SYM_A_NONE)	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	BTI_C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define SYM_FUNC_START_LOCAL(name)			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	SYM_START(name, SYM_L_LOCAL, SYM_A_ALIGN)	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	BTI_C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define SYM_FUNC_START_LOCAL_NOALIGN(name)		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	SYM_START(name, SYM_L_LOCAL, SYM_A_NONE)	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	BTI_C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define SYM_FUNC_START_WEAK(name)			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	SYM_START(name, SYM_L_WEAK, SYM_A_ALIGN)	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	BTI_C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define SYM_FUNC_START_WEAK_NOALIGN(name)		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	SYM_START(name, SYM_L_WEAK, SYM_A_NONE)		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	BTI_C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)  * Annotate a function as position independent, i.e., safe to be called before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)  * the kernel virtual mapping is activated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define SYM_FUNC_START_PI(x)			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 		SYM_FUNC_START_ALIAS(__pi_##x);	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 		SYM_FUNC_START(x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #define SYM_FUNC_START_WEAK_PI(x)		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 		SYM_FUNC_START_ALIAS(__pi_##x);	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 		SYM_FUNC_START_WEAK(x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define SYM_FUNC_END_PI(x)			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 		SYM_FUNC_END(x);		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 		SYM_FUNC_END_ALIAS(__pi_##x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #endif