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