| /* |
| * arch/arm64/include/asm/ftrace.h |
| * |
| * Copyright (C) 2013 Linaro Limited |
| * Author: AKASHI Takahiro <takahiro.akashi@linaro.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| #ifndef __ASM_FTRACE_H |
| #define __ASM_FTRACE_H |
| |
| #include <asm/insn.h> |
| |
| #define MCOUNT_ADDR ((unsigned long)_mcount) |
| #define MCOUNT_INSN_SIZE AARCH64_INSN_SIZE |
| |
| #ifndef __ASSEMBLY__ |
| extern void _mcount(unsigned long); |
| extern void *return_address(unsigned int); |
| |
| struct dyn_arch_ftrace { |
| /* No extra data needed for arm64 */ |
| }; |
| |
| extern unsigned long ftrace_graph_call; |
| |
| static inline unsigned long ftrace_call_adjust(unsigned long addr) |
| { |
| /* |
| * addr is the address of the mcount call instruction. |
| * recordmcount does the necessary offset calculation. |
| */ |
| return addr; |
| } |
| |
| #define ftrace_return_address(n) return_address(n) |
| #endif /* ifndef __ASSEMBLY__ */ |
| |
| #endif /* __ASM_FTRACE_H */ |
