From 6fbff14a638293dcd0550cac2921f308ef6abe0e Mon Sep 17 00:00:00 2001 From: Qing Zhang Date: Mon, 1 May 2023 17:19:52 +0800 Subject: [PATCH] LoongArch: ftrace: Abstract DYNAMIC_FTRACE_WITH_ARGS accesses Add new ftrace_regs_{get,set}_*() helpers which can be used to manipulate ftrace_regs. When CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS=y, these can always be used on any ftrace_regs, and when CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS =n these can be used when regs are available. Signed-off-by: Qing Zhang Signed-off-by: Huacai Chen --- arch/loongarch/include/asm/ftrace.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/arch/loongarch/include/asm/ftrace.h b/arch/loongarch/include/asm/ftrace.h index 3418d32d4fc7d2..aa5c57b5f33354 100644 --- a/arch/loongarch/include/asm/ftrace.h +++ b/arch/loongarch/include/asm/ftrace.h @@ -54,6 +54,31 @@ static __always_inline struct pt_regs *arch_ftrace_get_regs(struct ftrace_regs * return &fregs->regs; } +static __always_inline unsigned long +ftrace_regs_get_instruction_pointer(struct ftrace_regs *fregs) +{ + return instruction_pointer(&fregs->regs); +} + +static __always_inline void +ftrace_regs_set_instruction_pointer(struct ftrace_regs *fregs, unsigned long ip) +{ + regs_set_return_value(&fregs->regs, ip); +} + +#define ftrace_regs_get_argument(fregs, n) \ + regs_get_kernel_argument(&(fregs)->regs, n) +#define ftrace_regs_get_stack_pointer(fregs) \ + kernel_stack_pointer(&(fregs)->regs) +#define ftrace_regs_return_value(fregs) \ + regs_return_value(&(fregs)->regs) +#define ftrace_regs_set_return_value(fregs, ret) \ + regs_set_return_value(&(fregs)->regs, ret) +#define ftrace_override_function_with_return(fregs) \ + override_function_with_return(&(fregs)->regs) +#define ftrace_regs_query_register_offset(name) \ + regs_query_register_offset(name) + #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);