/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_POWERPC_STATIC_CALL_H #define _ASM_POWERPC_STATIC_CALL_H #define __PPC_SCT(name, inst) \ asm(".pushsection .text, \"ax\" \n" \ ".align 5 \n" \ ".globl " STATIC_CALL_TRAMP_STR(name) " \n" \ STATIC_CALL_TRAMP_STR(name) ": \n" \ inst " \n" \ " lis 12,2f@ha \n" \ " lwz 12,2f@l(12) \n" \ " mtctr 12 \n" \ " bctr \n" \ "1: li 3, 0 \n" \ " blr \n" \ "2: .long 0 \n" \ ".type " STATIC_CALL_TRAMP_STR(name) ", @function \n" \ ".size " STATIC_CALL_TRAMP_STR(name) ", . - " STATIC_CALL_TRAMP_STR(name) " \n" \ ".popsection \n") #define PPC_SCT_RET0 20 /* Offset of label 1 */ #define PPC_SCT_DATA 28 /* Offset of label 2 */ #define ARCH_DEFINE_STATIC_CALL_TRAMP(name, func) __PPC_SCT(name, "b " #func) #define ARCH_DEFINE_STATIC_CALL_NULL_TRAMP(name) __PPC_SCT(name, "blr") #define ARCH_DEFINE_STATIC_CALL_RET0_TRAMP(name) __PPC_SCT(name, "b .+20") #define CALL_INSN_SIZE 4 #endif /* _ASM_POWERPC_STATIC_CALL_H */