diff options
Diffstat (limited to 'arch/arm64/include/asm/linkage.h')
| -rw-r--r-- | arch/arm64/include/asm/linkage.h | 35 |
1 files changed, 15 insertions, 20 deletions
diff --git a/arch/arm64/include/asm/linkage.h b/arch/arm64/include/asm/linkage.h index 9906541a6861..b77e9b3f5371 100644 --- a/arch/arm64/include/asm/linkage.h +++ b/arch/arm64/include/asm/linkage.h @@ -1,48 +1,43 @@ #ifndef __ASM_LINKAGE_H #define __ASM_LINKAGE_H +#ifdef __ASSEMBLY__ +#include <asm/assembler.h> +#endif + #define __ALIGN .align 2 #define __ALIGN_STR ".align 2" -#if defined(CONFIG_ARM64_BTI_KERNEL) && defined(__aarch64__) - -/* - * Since current versions of gas reject the BTI instruction unless we - * set the architecture version to v8.5 we use the hint instruction - * instead. - */ -#define BTI_C hint 34 ; - /* - * When using in-kernel BTI we need to ensure that PCS-conformant assembly - * functions have suitable annotations. Override SYM_FUNC_START to insert - * a BTI landing pad at the start of everything. + * When using in-kernel BTI we need to ensure that PCS-conformant + * assembly functions have suitable annotations. Override + * SYM_FUNC_START to insert a BTI landing pad at the start of + * everything, the override is done unconditionally so we're more + * likely to notice any drift from the overridden definitions. */ #define SYM_FUNC_START(name) \ SYM_START(name, SYM_L_GLOBAL, SYM_A_ALIGN) \ - BTI_C + bti c ; #define SYM_FUNC_START_NOALIGN(name) \ SYM_START(name, SYM_L_GLOBAL, SYM_A_NONE) \ - BTI_C + bti c ; #define SYM_FUNC_START_LOCAL(name) \ SYM_START(name, SYM_L_LOCAL, SYM_A_ALIGN) \ - BTI_C + bti c ; #define SYM_FUNC_START_LOCAL_NOALIGN(name) \ SYM_START(name, SYM_L_LOCAL, SYM_A_NONE) \ - BTI_C + bti c ; #define SYM_FUNC_START_WEAK(name) \ SYM_START(name, SYM_L_WEAK, SYM_A_ALIGN) \ - BTI_C + bti c ; #define SYM_FUNC_START_WEAK_NOALIGN(name) \ SYM_START(name, SYM_L_WEAK, SYM_A_NONE) \ - BTI_C - -#endif + bti c ; /* * Annotate a function as position independent, i.e., safe to be called before |