1/* SPDX-License-Identifier: GPL-2.0 */
 2struct sigscratch {
 3	unsigned long scratch_unat;	/* ar.unat for the general registers saved in pt */
 4	unsigned long ar_pfs;		/* for syscalls, the user-level function-state  */
 5	struct pt_regs pt;
 6};
 7
 8struct sigframe {
 9	/*
10	 * Place signal handler args where user-level unwinder can find them easily.
11	 * DO NOT MOVE THESE.  They are part of the IA-64 Linux ABI and there is
12	 * user-level code that depends on their presence!
13	 */
14	unsigned long arg0;		/* signum */
15	unsigned long arg1;		/* siginfo pointer */
16	unsigned long arg2;		/* sigcontext pointer */
17	/*
18	 * End of architected state.
19	 */
20
21	void __user *handler;		/* pointer to the plabel of the signal handler */
22	struct siginfo info;
23	struct sigcontext sc;
24};
25
26extern void ia64_do_signal (struct sigscratch *, long);