1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_POWERPC_STATIC_CALL_H 3 #define _ASM_POWERPC_STATIC_CALL_H 4 5 #define __PPC_SCT(name, inst) \ 6 asm(".pushsection .text, \"ax\" \n" \ 7 ".align 5 \n" \ 8 ".globl " STATIC_CALL_TRAMP_STR(name) " \n" \ 9 STATIC_CALL_TRAMP_STR(name) ": \n" \ 10 inst " \n" \ 11 " lis 12,2f@ha \n" \ 12 " lwz 12,2f@l(12) \n" \ 13 " mtctr 12 \n" \ 14 " bctr \n" \ 15 "1: li 3, 0 \n" \ 16 " blr \n" \ 17 "2: .long 0 \n" \ 18 ".type " STATIC_CALL_TRAMP_STR(name) ", @function \n" \ 19 ".size " STATIC_CALL_TRAMP_STR(name) ", . - " STATIC_CALL_TRAMP_STR(name) " \n" \ 20 ".popsection \n") 21 22 #define PPC_SCT_RET0 20 /* Offset of label 1 */ 23 #define PPC_SCT_DATA 28 /* Offset of label 2 */ 24 25 #define ARCH_DEFINE_STATIC_CALL_TRAMP(name, func) __PPC_SCT(name, "b " #func) 26 #define ARCH_DEFINE_STATIC_CALL_NULL_TRAMP(name) __PPC_SCT(name, "blr") 27 #define ARCH_DEFINE_STATIC_CALL_RET0_TRAMP(name) __PPC_SCT(name, "b .+20") 28 29 #endif /* _ASM_POWERPC_STATIC_CALL_H */ 30