12 typedef long (*syscall_fn_t)(const struct pt_regs *regs);
21 				 struct pt_regs *regs)  in syscall_get_nr()  argument
23 	return regs->syscallno;  in syscall_get_nr()
27 				    struct pt_regs *regs)  in syscall_rollback()  argument
29 	regs->regs[0] = regs->orig_x0;  in syscall_rollback()
33 					    struct pt_regs *regs)  in syscall_get_return_value()  argument
35 	unsigned long val = regs->regs[0];  in syscall_get_return_value()
44 				     struct pt_regs *regs)  in syscall_get_error()  argument
46 	unsigned long error = syscall_get_return_value(task, regs);  in syscall_get_error()
52 					    struct pt_regs *regs,  in syscall_set_return_value()  argument
61 	regs->regs[0] = val;  in syscall_set_return_value()
65 				  struct pt_regs *regs,  in syscall_set_nr()  argument
68 	regs->syscallno = nr;  in syscall_set_nr()
76 		syscall_set_return_value(task, regs, -ENOSYS, 0);  in syscall_set_nr()
81 					 struct pt_regs *regs,  in syscall_get_arguments()  argument
84 	args[0] = regs->orig_x0;  in syscall_get_arguments()
85 	args[1] = regs->regs[1];  in syscall_get_arguments()
86 	args[2] = regs->regs[2];  in syscall_get_arguments()
87 	args[3] = regs->regs[3];  in syscall_get_arguments()
88 	args[4] = regs->regs[4];  in syscall_get_arguments()
89 	args[5] = regs->regs[5];  in syscall_get_arguments()
93 					 struct pt_regs *regs,  in syscall_set_arguments()  argument
96 	regs->regs[0] = args[0];  in syscall_set_arguments()
97 	regs->regs[1] = args[1];  in syscall_set_arguments()
98 	regs->regs[2] = args[2];  in syscall_set_arguments()
99 	regs->regs[3] = args[3];  in syscall_set_arguments()
100 	regs->regs[4] = args[4];  in syscall_set_arguments()
101 	regs->regs[5] = args[5];  in syscall_set_arguments()
108 	regs->orig_x0 = regs->regs[0];  in syscall_set_arguments()
123 int syscall_trace_enter(struct pt_regs *regs);
124 void syscall_trace_exit(struct pt_regs *regs);