1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_STATIC_CALL_H 3 #define _ASM_STATIC_CALL_H 4 5 #define __ARCH_DEFINE_STATIC_CALL_TRAMP(name, target) \ 6 asm(" .pushsection .static_call.text, \"ax\" \n" \ 7 " .align 4 \n" \ 8 " .globl " name " \n" \ 9 name ": \n" \ 10 " hint 34 /* BTI C */ \n" \ 11 " adrp x16, 1f \n" \ 12 " ldr x16, [x16, :lo12:1f] \n" \ 13 " br x16 \n" \ 14 " .type " name ", %function \n" \ 15 " .size " name ", . - " name " \n" \ 16 " .popsection \n" \ 17 " .pushsection .rodata, \"a\" \n" \ 18 " .align 3 \n" \ 19 "1: .quad " target " \n" \ 20 " .popsection \n") 21 22 #define ARCH_DEFINE_STATIC_CALL_TRAMP(name, func) \ 23 __ARCH_DEFINE_STATIC_CALL_TRAMP(STATIC_CALL_TRAMP_STR(name), #func) 24 25 #define ARCH_DEFINE_STATIC_CALL_NULL_TRAMP(name) \ 26 ARCH_DEFINE_STATIC_CALL_TRAMP(name, __static_call_return0) 27 28 #define ARCH_DEFINE_STATIC_CALL_RET0_TRAMP(name) \ 29 ARCH_DEFINE_STATIC_CALL_TRAMP(name, __static_call_return0) 30 31 #endif /* _ASM_STATIC_CALL_H */ 32