/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (C) 2022 Loongson Technology Corporation Limited */ #ifndef _ASM_LOONGARCH_FTRACE_H #define _ASM_LOONGARCH_FTRACE_H #define FTRACE_PLT_IDX 0 #define FTRACE_REGS_PLT_IDX 1 #define NR_FTRACE_PLTS 2 #ifdef CONFIG_FUNCTION_TRACER #define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */ #ifndef __ASSEMBLY__ #ifndef CONFIG_DYNAMIC_FTRACE #define mcount _mcount extern void _mcount(void); extern void prepare_ftrace_return(unsigned long self_addr, unsigned long callsite_sp, unsigned long old); #else struct dyn_ftrace; struct dyn_arch_ftrace { }; #define ARCH_SUPPORTS_FTRACE_OPS 1 #define HAVE_FUNCTION_GRAPH_RET_ADDR_PTR #define ftrace_init_nop ftrace_init_nop int ftrace_init_nop(struct module *mod, struct dyn_ftrace *rec); static inline unsigned long ftrace_call_adjust(unsigned long addr) { return addr; } void prepare_ftrace_return(unsigned long self_addr, unsigned long *parent); #endif /* CONFIG_DYNAMIC_FTRACE */ #ifdef CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS struct ftrace_ops; struct ftrace_regs { struct pt_regs regs; }; static __always_inline struct pt_regs *arch_ftrace_get_regs(struct ftrace_regs *fregs) { return &fregs->regs; } #define ftrace_graph_func ftrace_graph_func void ftrace_graph_func(unsigned long ip, unsigned long parent_ip, struct ftrace_ops *op, struct ftrace_regs *fregs); #endif #endif /* __ASSEMBLY__ */ #endif /* CONFIG_FUNCTION_TRACER */ #endif /* _ASM_LOONGARCH_FTRACE_H */