1/*	$NetBSD: userret.h,v 1.18 2020/01/07 07:41:20 skrll Exp $	*/
2
3/*
4 * Copyright (c) 1988 University of Utah.
5 * Copyright (c) 1992, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * the Systems Programming Group of the University of Utah Computer
10 * Science Department and Ralph Campbell.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 *    notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 *    notice, this list of conditions and the following disclaimer in the
19 *    documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: Utah Hdr: trap.c 1.32 91/04/06
37 *
38 *	@(#)trap.c	8.5 (Berkeley) 1/11/94
39 */
40
41#ifndef _SH3_USERRET_H_
42#define	_SH3_USERRET_H_
43
44#include <sys/userret.h>
45
46#include <sh3/ubcreg.h>
47#include "opt_ptrace.h"
48
49
50static __inline void
51userret(struct lwp *l)
52{
53
54	/* This must come first... */
55	l->l_md.md_astpending = 0;
56
57	if (l->l_pflag & LP_OWEUPC) {
58		l->l_pflag &= ~LP_OWEUPC;
59		ADDUPROF(l);
60	}
61
62	/* Invoke MI userret code */
63	mi_userret(l);
64
65#ifdef PTRACE_HOOKS
66	/* Check if lwp is being PT_STEP'ed */
67	if (l->l_md.md_flags & MDL_SSTEP) {
68		struct trapframe *tf = l->l_md.md_regs;
69
70		/*
71		 * Channel A is set up for single stepping in sh_cpu_init().
72		 * Before RTE we write tf_ubc to BBRA and tf_spc to BARA.
73		 */
74#ifdef SH3
75		if (CPU_IS_SH3) {
76			tf->tf_ubc = UBC_CYCLE_INSN | UBC_CYCLE_READ
77				| SH3_UBC_CYCLE_CPU;
78		}
79#endif
80#ifdef SH4
81		if (CPU_IS_SH4) {
82			tf->tf_ubc = UBC_CYCLE_INSN | UBC_CYCLE_READ;
83		}
84#endif
85	}
86#endif /* PTRACE_HOOKS */
87}
88
89#endif /* !_SH3_USERRET_H_ */
90