include/asm/ftrace.h

1 /* SPDX-License-Identifier: GPL-2.0 */
46 	if (!fregs->regs.cs)  in arch_ftrace_get_regs()
48 	return &fregs->regs;  in arch_ftrace_get_regs()
52 	do { (fregs)->regs.ip = (_ip); } while (0)
55 	((fregs)->regs.ip)
58 	regs_get_kernel_argument(&(fregs)->regs, n)
60 	kernel_stack_pointer(&(fregs)->regs)
62 	regs_return_value(&(fregs)->regs)
64 	regs_set_return_value(&(fregs)->regs, ret)
66 	override_function_with_return(&(fregs)->regs)
80  * When a ftrace registered caller is tracing a function that is
81  * also set by a register_ftrace_direct() call, it needs to be
84  * tells the ftrace_caller that there's a direct caller.
89 	/* Emulate a call */  in __arch_ftrace_set_direct_caller()
90 	regs->orig_ax = addr;  in __arch_ftrace_set_direct_caller()
93 	__arch_ftrace_set_direct_caller(&(fregs)->regs, addr)
125 	return !strcmp(sym + 3, name + 3) ||  in arch_syscall_match_sym_name()
126 		(!strncmp(sym, "__x64_", 6) && !strcmp(sym + 9, name + 3)) ||  in arch_syscall_match_sym_name()
127 		(!strncmp(sym, "__ia32_", 7) && !strcmp(sym + 10, name + 3)) ||  in arch_syscall_match_sym_name()
128 		(!strncmp(sym, "__do_sys", 8) && !strcmp(sym + 8, name + 3));  in arch_syscall_match_sym_name()
137  * Because ia32 syscalls do not map to x86_64 syscall numbers
138  * this screws up the trace output when tracing a ia32 task.
163 	return ret_regs->ax;  in fgraph_ret_regs_return_value()
168 	return ret_regs->bp;  in fgraph_ret_regs_frame_pointer()