linkage.h (1063B)
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 .align 2 9#define __ALIGN_STR ".align 2" 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#endif