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userret.h revision 1.10.42.1 
      1  1.10.42.1    rmind /*	$NetBSD: userret.h,v 1.10.42.1 2011/03/05 20:51:57 rmind Exp $	*/
      2        1.1      uch 
      3        1.1      uch /*
      4  1.10.42.1    rmind  * Copyright (c) 1988 University of Utah.
      5        1.1      uch  * Copyright (c) 1992, 1993
      6        1.1      uch  *	The Regents of the University of California.  All rights reserved.
      7        1.5      agc  *
      8        1.5      agc  * This code is derived from software contributed to Berkeley by
      9        1.5      agc  * the Systems Programming Group of the University of Utah Computer
     10        1.5      agc  * Science Department and Ralph Campbell.
     11        1.5      agc  *
     12        1.5      agc  * Redistribution and use in source and binary forms, with or without
     13        1.5      agc  * modification, are permitted provided that the following conditions
     14        1.5      agc  * are met:
     15        1.5      agc  * 1. Redistributions of source code must retain the above copyright
     16        1.5      agc  *    notice, this list of conditions and the following disclaimer.
     17        1.5      agc  * 2. Redistributions in binary form must reproduce the above copyright
     18        1.5      agc  *    notice, this list of conditions and the following disclaimer in the
     19        1.5      agc  *    documentation and/or other materials provided with the distribution.
     20        1.5      agc  * 3. Neither the name of the University nor the names of its contributors
     21        1.5      agc  *    may be used to endorse or promote products derived from this software
     22        1.5      agc  *    without specific prior written permission.
     23        1.5      agc  *
     24        1.5      agc  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25        1.5      agc  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26        1.5      agc  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27        1.5      agc  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28        1.5      agc  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29        1.5      agc  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30        1.5      agc  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31        1.5      agc  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32        1.5      agc  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33        1.5      agc  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34        1.5      agc  * SUCH DAMAGE.
     35        1.5      agc  *
     36        1.5      agc  * from: Utah Hdr: trap.c 1.32 91/04/06
     37        1.5      agc  *
     38        1.5      agc  *	@(#)trap.c	8.5 (Berkeley) 1/11/94
     39        1.5      agc  */
     40        1.1      uch 
     41        1.1      uch #ifndef _SH3_USERRET_H_
     42        1.1      uch #define	_SH3_USERRET_H_
     43        1.1      uch 
     44        1.6       cl #include <sys/userret.h>
     45        1.6       cl 
     46  1.10.42.1    rmind #include <sh3/ubcreg.h>
     47  1.10.42.1    rmind #include "opt_ptrace.h"
     48  1.10.42.1    rmind 
     49  1.10.42.1    rmind 
     50        1.9    perry static __inline void
     51        1.4  thorpej userret(struct lwp *l)
     52        1.1      uch {
     53        1.4  thorpej 
     54        1.6       cl 	/* Invoke MI userret code */
     55        1.6       cl 	mi_userret(l);
     56  1.10.42.1    rmind 
     57  1.10.42.1    rmind #ifdef PTRACE
     58  1.10.42.1    rmind 	/* Check if lwp is being PT_STEP'ed */
     59  1.10.42.1    rmind 	if (l->l_md.md_flags & MDP_SSTEP) {
     60  1.10.42.1    rmind 		struct trapframe *tf = l->l_md.md_regs;
     61  1.10.42.1    rmind 
     62  1.10.42.1    rmind 		/*
     63  1.10.42.1    rmind 		 * Channel A is set up for single stepping in sh_cpu_init().
     64  1.10.42.1    rmind 		 * Before RTE we write tf_ubc to BBRA and tf_spc to BARA.
     65  1.10.42.1    rmind 		 */
     66  1.10.42.1    rmind #ifdef SH3
     67  1.10.42.1    rmind 		if (CPU_IS_SH3) {
     68  1.10.42.1    rmind 			tf->tf_ubc = UBC_CYCLE_INSN | UBC_CYCLE_READ
     69  1.10.42.1    rmind 				| SH3_UBC_CYCLE_CPU;
     70  1.10.42.1    rmind 	}
     71  1.10.42.1    rmind #endif
     72  1.10.42.1    rmind #ifdef SH4
     73  1.10.42.1    rmind 		if (CPU_IS_SH4) {
     74  1.10.42.1    rmind 			tf->tf_ubc = UBC_CYCLE_INSN | UBC_CYCLE_READ;
     75  1.10.42.1    rmind 		}
     76  1.10.42.1    rmind #endif
     77  1.10.42.1    rmind 	}
     78  1.10.42.1    rmind #endif /* PTRACE */
     79        1.1      uch }
     80        1.1      uch 
     81        1.1      uch #endif /* !_SH3_USERRET_H_ */
     82