162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */
262306a36Sopenharmony_ci#ifndef _ASM_POWERPC_STATIC_CALL_H
362306a36Sopenharmony_ci#define _ASM_POWERPC_STATIC_CALL_H
462306a36Sopenharmony_ci
562306a36Sopenharmony_ci#define __PPC_SCT(name, inst)					\
662306a36Sopenharmony_ci	asm(".pushsection .text, \"ax\"				\n"	\
762306a36Sopenharmony_ci	    ".align 5						\n"	\
862306a36Sopenharmony_ci	    ".globl " STATIC_CALL_TRAMP_STR(name) "		\n"	\
962306a36Sopenharmony_ci	    STATIC_CALL_TRAMP_STR(name) ":			\n"	\
1062306a36Sopenharmony_ci	    inst "						\n"	\
1162306a36Sopenharmony_ci	    "	lis	12,2f@ha				\n"	\
1262306a36Sopenharmony_ci	    "	lwz	12,2f@l(12)				\n"	\
1362306a36Sopenharmony_ci	    "	mtctr	12					\n"	\
1462306a36Sopenharmony_ci	    "	bctr						\n"	\
1562306a36Sopenharmony_ci	    "1:	li	3, 0					\n"	\
1662306a36Sopenharmony_ci	    "	blr						\n"	\
1762306a36Sopenharmony_ci	    "2:	.long 0						\n"	\
1862306a36Sopenharmony_ci	    ".type " STATIC_CALL_TRAMP_STR(name) ", @function	\n"	\
1962306a36Sopenharmony_ci	    ".size " STATIC_CALL_TRAMP_STR(name) ", . - " STATIC_CALL_TRAMP_STR(name) " \n" \
2062306a36Sopenharmony_ci	    ".popsection					\n")
2162306a36Sopenharmony_ci
2262306a36Sopenharmony_ci#define PPC_SCT_RET0		20		/* Offset of label 1 */
2362306a36Sopenharmony_ci#define PPC_SCT_DATA		28		/* Offset of label 2 */
2462306a36Sopenharmony_ci
2562306a36Sopenharmony_ci#define ARCH_DEFINE_STATIC_CALL_TRAMP(name, func)	__PPC_SCT(name, "b " #func)
2662306a36Sopenharmony_ci#define ARCH_DEFINE_STATIC_CALL_NULL_TRAMP(name)	__PPC_SCT(name, "blr")
2762306a36Sopenharmony_ci#define ARCH_DEFINE_STATIC_CALL_RET0_TRAMP(name)	__PPC_SCT(name, "b .+20")
2862306a36Sopenharmony_ci
2962306a36Sopenharmony_ci#endif /* _ASM_POWERPC_STATIC_CALL_H */
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