| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef _LINUX_FTRACE_REGS_H |
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| 3 | #define _LINUX_FTRACE_REGS_H |
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| 4 | |
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| 5 | /* |
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| 6 | * For archs that just copy pt_regs in ftrace regs, it can use this default. |
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| 7 | * If an architecture does not use pt_regs, it must define all the below |
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| 8 | * accessor functions. |
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| 9 | */ |
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| 10 | #ifndef HAVE_ARCH_FTRACE_REGS |
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| 11 | struct __arch_ftrace_regs { |
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| 12 | struct pt_regs regs; |
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| 13 | }; |
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| 14 | |
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| 15 | #define arch_ftrace_regs(fregs) ((struct __arch_ftrace_regs *)(fregs)) |
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| 16 | |
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| 17 | struct ftrace_regs; |
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| 18 | |
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| 19 | #define ftrace_regs_get_instruction_pointer(fregs) \ |
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| 20 | instruction_pointer(&arch_ftrace_regs(fregs)->regs) |
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| 21 | #define ftrace_regs_get_argument(fregs, n) \ |
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| 22 | regs_get_kernel_argument(&arch_ftrace_regs(fregs)->regs, n) |
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| 23 | #define ftrace_regs_get_stack_pointer(fregs) \ |
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| 24 | kernel_stack_pointer(&arch_ftrace_regs(fregs)->regs) |
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| 25 | #define ftrace_regs_get_return_value(fregs) \ |
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| 26 | regs_return_value(&arch_ftrace_regs(fregs)->regs) |
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| 27 | #define ftrace_regs_set_return_value(fregs, ret) \ |
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| 28 | regs_set_return_value(&arch_ftrace_regs(fregs)->regs, ret) |
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| 29 | #define ftrace_override_function_with_return(fregs) \ |
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| 30 | override_function_with_return(&arch_ftrace_regs(fregs)->regs) |
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| 31 | #define ftrace_regs_query_register_offset(name) \ |
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| 32 | regs_query_register_offset(name) |
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| 33 | #define ftrace_regs_get_frame_pointer(fregs) \ |
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| 34 | frame_pointer(&arch_ftrace_regs(fregs)->regs) |
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| 35 | |
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| 36 | #endif /* HAVE_ARCH_FTRACE_REGS */ |
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| 37 | |
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| 38 | /* This can be overridden by the architectures */ |
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| 39 | #ifndef FTRACE_REGS_MAX_ARGS |
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| 40 | # define FTRACE_REGS_MAX_ARGS 6 |
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| 41 | #endif |
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| 42 | |
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| 43 | #endif /* _LINUX_FTRACE_REGS_H */ |
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| 44 | |
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