110 lines
4.0 KiB
C
110 lines
4.0 KiB
C
/* $NetBSD: signal.h,v 1.7 2003/01/22 13:46:44 scw Exp $ */
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/*
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* Copyright 2002 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Steve C. Woodford for Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* SH-5 Signal Data Structures.
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*
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* XXX: SH-5 Signals are still very much in a state of flux.
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*/
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#ifndef _SH5_SIGNAL_H_
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#define _SH5_SIGNAL_H_
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#ifndef _LP64
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typedef long long sig_atomic_t;
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#else
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typedef long sig_atomic_t;
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#endif
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#if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \
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!defined(_XOPEN_SOURCE)
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#include <machine/reg.h>
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/*
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* Information pushed on stack when a signal is delivered.
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* This is used by the kernel to restore state following
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* execution of the signal handler. It is also made available
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* to the handler to allow it to restore state properly if
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* a non-standard exit is performed.
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*/
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struct sigcontext {
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int sc_onstack; /* sigstack state to restore */
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int __sc_mask13; /* signal mask to restore (old style) */
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int sc_fpstate; /* saved fp state flags */
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int sc_pad;
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struct reg sc_regs; /* saved register state */
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struct fpreg sc_fpregs; /* saved FP register state */
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sigset_t sc_mask; /* signal mask to restore (new style) */
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};
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/*
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* The following macros are used to convert from a ucontext to sigcontext,
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* and vice-versa. This is for building a sigcontext to deliver to old-style
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* signal handlers, and converting back (in the event the handler modifies
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* the context).
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*/
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#define _MCONTEXT_TO_SIGCONTEXT(uc, sc) \
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do { \
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memcpy(&(sc)->sc_regs, &(uc)->uc_mcontext.__gregs[0], \
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sizeof(struct reg)); \
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(sc)->sc_regs.r_regs[24] = 0xACEBABE5ULL; \
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if ((uc)->uc_flags & _UC_FPU) { \
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(sc)->sc_fpstate = 3; \
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memcpy(&(sc)->sc_fpregs, &(uc)->uc_mcontext.__fpregs, \
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sizeof(struct fpreg)); \
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} else { \
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(sc)->sc_fpstate = 0; \
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(sc)->sc_fpregs.r_fpscr = (uc)->uc_mcontext.__fpregs.__fp_scr;\
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} \
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} while (/*CONSTCOND*/0)
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#define _SIGCONTEXT_TO_MCONTEXT(sc, uc) \
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do { \
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memcpy(&(uc)->uc_mcontext.__gregs[0], &(sc)->sc_regs, \
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sizeof(struct reg)); \
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if ((sc)->sc_fpstate) { \
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memcpy(&(uc)->uc_mcontext.__fpregs, &(sc)->sc_fpregs, \
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sizeof(struct fpreg)); \
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(uc)->uc_flags |= _UC_FPU; \
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} else \
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(uc)->uc_mcontext.__fpregs.__fp_scr = (sc)->sc_fpregs.r_fpscr;\
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} while (/*CONSTCOND*/0)
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#endif /* !_ANSI_SOURCE && !_POSIX_C_SOURCE && !_XOPEN_SOURCE */
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#endif /* !_SH5_SIGNAL_H_*/
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