1*54ac9ff8SArd Biesheuvel /* SPDX-License-Identifier: GPL-2.0 */ 2*54ac9ff8SArd Biesheuvel #ifndef _ASM_STATIC_CALL_H 3*54ac9ff8SArd Biesheuvel #define _ASM_STATIC_CALL_H 4*54ac9ff8SArd Biesheuvel 5*54ac9ff8SArd Biesheuvel #define __ARCH_DEFINE_STATIC_CALL_TRAMP(name, target) \ 6*54ac9ff8SArd Biesheuvel asm(" .pushsection .static_call.text, \"ax\" \n" \ 7*54ac9ff8SArd Biesheuvel " .align 4 \n" \ 8*54ac9ff8SArd Biesheuvel " .globl " name " \n" \ 9*54ac9ff8SArd Biesheuvel name ": \n" \ 10*54ac9ff8SArd Biesheuvel " hint 34 /* BTI C */ \n" \ 11*54ac9ff8SArd Biesheuvel " adrp x16, 1f \n" \ 12*54ac9ff8SArd Biesheuvel " ldr x16, [x16, :lo12:1f] \n" \ 13*54ac9ff8SArd Biesheuvel " br x16 \n" \ 14*54ac9ff8SArd Biesheuvel " .type " name ", %function \n" \ 15*54ac9ff8SArd Biesheuvel " .size " name ", . - " name " \n" \ 16*54ac9ff8SArd Biesheuvel " .popsection \n" \ 17*54ac9ff8SArd Biesheuvel " .pushsection .rodata, \"a\" \n" \ 18*54ac9ff8SArd Biesheuvel " .align 3 \n" \ 19*54ac9ff8SArd Biesheuvel "1: .quad " target " \n" \ 20*54ac9ff8SArd Biesheuvel " .popsection \n") 21*54ac9ff8SArd Biesheuvel 22*54ac9ff8SArd Biesheuvel #define ARCH_DEFINE_STATIC_CALL_TRAMP(name, func) \ 23*54ac9ff8SArd Biesheuvel __ARCH_DEFINE_STATIC_CALL_TRAMP(STATIC_CALL_TRAMP_STR(name), #func) 24*54ac9ff8SArd Biesheuvel 25*54ac9ff8SArd Biesheuvel #define ARCH_DEFINE_STATIC_CALL_NULL_TRAMP(name) \ 26*54ac9ff8SArd Biesheuvel ARCH_DEFINE_STATIC_CALL_TRAMP(name, __static_call_return0) 27*54ac9ff8SArd Biesheuvel 28*54ac9ff8SArd Biesheuvel #define ARCH_DEFINE_STATIC_CALL_RET0_TRAMP(name) \ 29*54ac9ff8SArd Biesheuvel ARCH_DEFINE_STATIC_CALL_TRAMP(name, __static_call_return0) 30*54ac9ff8SArd Biesheuvel 31*54ac9ff8SArd Biesheuvel #endif /* _ASM_STATIC_CALL_H */ 32