Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_FTRACE_REGS_H
3#define _LINUX_FTRACE_REGS_H
4
5/*
6 * For archs that just copy pt_regs in ftrace regs, it can use this default.
7 * If an architecture does not use pt_regs, it must define all the below
8 * accessor functions.
9 */
10#ifndef HAVE_ARCH_FTRACE_REGS
11struct __arch_ftrace_regs {
12 struct pt_regs regs;
13};
14
15#define arch_ftrace_regs(fregs) ((struct __arch_ftrace_regs *)(fregs))
16
17struct ftrace_regs;
18
19#define ftrace_regs_get_instruction_pointer(fregs) \
20 instruction_pointer(&arch_ftrace_regs(fregs)->regs)
21#define ftrace_regs_get_argument(fregs, n) \
22 regs_get_kernel_argument(&arch_ftrace_regs(fregs)->regs, n)
23#define ftrace_regs_get_stack_pointer(fregs) \
24 kernel_stack_pointer(&arch_ftrace_regs(fregs)->regs)
25#define ftrace_regs_get_return_value(fregs) \
26 regs_return_value(&arch_ftrace_regs(fregs)->regs)
27#define ftrace_regs_set_return_value(fregs, ret) \
28 regs_set_return_value(&arch_ftrace_regs(fregs)->regs, ret)
29#define ftrace_override_function_with_return(fregs) \
30 override_function_with_return(&arch_ftrace_regs(fregs)->regs)
31#define ftrace_regs_query_register_offset(name) \
32 regs_query_register_offset(name)
33#define ftrace_regs_get_frame_pointer(fregs) \
34 frame_pointer(&arch_ftrace_regs(fregs)->regs)
35
36#endif /* HAVE_ARCH_FTRACE_REGS */
37
38/* This can be overridden by the architectures */
39#ifndef FTRACE_REGS_MAX_ARGS
40# define FTRACE_REGS_MAX_ARGS 6
41#endif
42
43#endif /* _LINUX_FTRACE_REGS_H */