1 #ifndef __ASM_LINKAGE_H 2 #define __ASM_LINKAGE_H 3 4 #ifdef __ASSEMBLY__ 5 #include <asm/assembler.h> 6 #endif 7 8 #define __ALIGN .balign CONFIG_FUNCTION_ALIGNMENT 9 #define __ALIGN_STR ".balign " #CONFIG_FUNCTION_ALIGNMENT 10 11 /* 12 * When using in-kernel BTI we need to ensure that PCS-conformant 13 * assembly functions have suitable annotations. Override 14 * SYM_FUNC_START to insert a BTI landing pad at the start of 15 * everything, the override is done unconditionally so we're more 16 * likely to notice any drift from the overridden definitions. 17 */ 18 #define SYM_FUNC_START(name) \ 19 SYM_START(name, SYM_L_GLOBAL, SYM_A_ALIGN) \ 20 bti c ; 21 22 #define SYM_FUNC_START_NOALIGN(name) \ 23 SYM_START(name, SYM_L_GLOBAL, SYM_A_NONE) \ 24 bti c ; 25 26 #define SYM_FUNC_START_LOCAL(name) \ 27 SYM_START(name, SYM_L_LOCAL, SYM_A_ALIGN) \ 28 bti c ; 29 30 #define SYM_FUNC_START_LOCAL_NOALIGN(name) \ 31 SYM_START(name, SYM_L_LOCAL, SYM_A_NONE) \ 32 bti c ; 33 34 #define SYM_FUNC_START_WEAK(name) \ 35 SYM_START(name, SYM_L_WEAK, SYM_A_ALIGN) \ 36 bti c ; 37 38 #define SYM_FUNC_START_WEAK_NOALIGN(name) \ 39 SYM_START(name, SYM_L_WEAK, SYM_A_NONE) \ 40 bti c ; 41 42 #define SYM_TYPED_FUNC_START(name) \ 43 SYM_TYPED_START(name, SYM_L_GLOBAL, SYM_A_ALIGN) \ 44 bti c ; 45 46 #endif 47