1aeed41a9SMarc Zyngier #ifndef __ASM_LINKAGE_H 2aeed41a9SMarc Zyngier #define __ASM_LINKAGE_H 3aeed41a9SMarc Zyngier 4dd73d18eSCatalin Marinas #ifdef __ASSEMBLY__ 5dd73d18eSCatalin Marinas #include <asm/assembler.h> 6dd73d18eSCatalin Marinas #endif 7dd73d18eSCatalin Marinas 8*47a15aa5SMark Rutland #define __ALIGN .balign CONFIG_FUNCTION_ALIGNMENT 9*47a15aa5SMark Rutland #define __ALIGN_STR ".balign " #CONFIG_FUNCTION_ALIGNMENT 10aeed41a9SMarc Zyngier 11714a8d02SMark Brown /* 12481ee45cSMark Brown * When using in-kernel BTI we need to ensure that PCS-conformant 13481ee45cSMark Brown * assembly functions have suitable annotations. Override 14481ee45cSMark Brown * SYM_FUNC_START to insert a BTI landing pad at the start of 15481ee45cSMark Brown * everything, the override is done unconditionally so we're more 16481ee45cSMark Brown * likely to notice any drift from the overridden definitions. 17714a8d02SMark Brown */ 18714a8d02SMark Brown #define SYM_FUNC_START(name) \ 19714a8d02SMark Brown SYM_START(name, SYM_L_GLOBAL, SYM_A_ALIGN) \ 20742a15b1SMark Brown bti c ; 21714a8d02SMark Brown 22714a8d02SMark Brown #define SYM_FUNC_START_NOALIGN(name) \ 23714a8d02SMark Brown SYM_START(name, SYM_L_GLOBAL, SYM_A_NONE) \ 24742a15b1SMark Brown bti c ; 25714a8d02SMark Brown 26714a8d02SMark Brown #define SYM_FUNC_START_LOCAL(name) \ 27714a8d02SMark Brown SYM_START(name, SYM_L_LOCAL, SYM_A_ALIGN) \ 28742a15b1SMark Brown bti c ; 29714a8d02SMark Brown 30714a8d02SMark Brown #define SYM_FUNC_START_LOCAL_NOALIGN(name) \ 31714a8d02SMark Brown SYM_START(name, SYM_L_LOCAL, SYM_A_NONE) \ 32742a15b1SMark Brown bti c ; 33714a8d02SMark Brown 34714a8d02SMark Brown #define SYM_FUNC_START_WEAK(name) \ 35714a8d02SMark Brown SYM_START(name, SYM_L_WEAK, SYM_A_ALIGN) \ 36742a15b1SMark Brown bti c ; 37714a8d02SMark Brown 38714a8d02SMark Brown #define SYM_FUNC_START_WEAK_NOALIGN(name) \ 39714a8d02SMark Brown SYM_START(name, SYM_L_WEAK, SYM_A_NONE) \ 40742a15b1SMark Brown bti c ; 41714a8d02SMark Brown 42c50d3285SSami Tolvanen #define SYM_TYPED_FUNC_START(name) \ 43c50d3285SSami Tolvanen SYM_TYPED_START(name, SYM_L_GLOBAL, SYM_A_ALIGN) \ 44c50d3285SSami Tolvanen bti c ; 45c50d3285SSami Tolvanen 46aeed41a9SMarc Zyngier #endif 47