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NetBSD/sys/arch/m68k/include/signal.h

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/* $NetBSD: signal.h,v 1.11 2003/01/17 23:18:28 thorpej Exp $ */
/*
* Copyright (c) 1982, 1986, 1989, 1991 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)signal.h 7.16 (Berkeley) 3/17/91
*/
#ifndef _M68K_SIGNAL_H_
#define _M68K_SIGNAL_H_
typedef int sig_atomic_t;
#if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \
!defined(_XOPEN_SOURCE)
/*
* Get the "code" values
*/
#include <machine/trap.h>
/*
* Information pushed on stack when a signal is delivered.
* This is used by the kernel to restore state following
* execution of the signal handler. It is also made available
* to the handler to allow it to restore state properly if
* a non-standard exit is performed.
*/
#if defined(__LIBC12_SOURCE__) || defined(_KERNEL)
struct sigcontext13 {
int sc_onstack; /* sigstack state to restore */
int sc_mask; /* signal mask to restore (old style) */
int sc_sp; /* sp to restore */
int sc_fp; /* fp to restore */
int sc_ap; /* ap to restore */
int sc_pc; /* pc to restore */
int sc_ps; /* psl to restore */
};
#endif /* __LIBC12_SOURCE__ || _KERNEL */
struct sigcontext {
int sc_onstack; /* sigstack state to restore */
int __sc_mask13; /* signal mask to restore (old style) */
int sc_sp; /* sp to restore */
int sc_fp; /* fp to restore */
int sc_ap; /* ap to restore */
int sc_pc; /* pc to restore */
int sc_ps; /* psl to restore */
sigset_t sc_mask; /* signal mask to restore (new style) */
};
/*
* The following macros are used to convert from a ucontext to sigcontext,
* and vice-versa. This is for building a sigcontext to deliver to old-style
* signal handlers, and converting back (in the event the handler modifies
* the context).
*
* On m68k, we also need the sigstate conversion macros below.
*/
#define _MCONTEXT_TO_SIGCONTEXT(uc, sc) \
do { \
(sc)->sc_sp = (uc)->uc_mcontext.__gregs[_REG_A7]; \
(sc)->sc_fp = (uc)->uc_mcontext.__gregs[_REG_A6]; \
/* sc_ap points to sigstate */ \
(sc)->sc_pc = (uc)->uc_mcontext.__gregs[_REG_PC]; \
(sc)->sc_ps = (uc)->uc_mcontext.__gregs[_REG_PS]; \
} while (/*CONSTCOND*/0)
#define _SIGCONTEXT_TO_MCONTEXT(sc, uc) \
do { \
(uc)->uc_mcontext.__gregs[_REG_A7] = (sc)->sc_sp; \
(uc)->uc_mcontext.__gregs[_REG_A6] = (sc)->sc_fp; \
(uc)->uc_mcontext.__gregs[_REG_PC] = (sc)->sc_pc; \
(uc)->uc_mcontext.__gregs[_REG_PS] = (sc)->sc_ps; \
} while (/*CONSTCOND*/0)
#if defined(__M68K_SIGNAL_PRIVATE)
#include <m68k/frame.h>
/*
* Register state saved while kernel delivers a signal.
*/
struct sigstate {
int ss_flags; /* which of the following are valid */
struct frame ss_frame; /* original exception frame */
struct fpframe ss_fpstate; /* 68881/68882 state info */
};
#define SS_RTEFRAME 0x01
#define SS_FPSTATE 0x02
#define SS_USERREGS 0x04
#ifdef _KERNEL
#define _SIGSTATE_EXFRAMESIZE(fmt) exframesize[(fmt)]
#endif
#define _MCONTEXT_TO_SIGSTATE(uc, ss) \
do { \
(ss)->ss_flags = SS_USERREGS; \
memcpy(&(ss)->ss_frame.f_regs, &(uc)->uc_mcontext.__gregs, \
16 * sizeof(unsigned int)); \
(ss)->ss_frame.f_pc = (uc)->uc_mcontext.__gregs[_REG_PC]; \
(ss)->ss_frame.f_sr = (uc)->uc_mcontext.__gregs[_REG_PS]; \
(ss)->ss_frame.f_pad = 0; \
(ss)->ss_frame.f_stackadj = 0; \
(ss)->ss_frame.f_format = \
(uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_format; \
if ((ss)->ss_frame.f_format >= FMT4) { \
(ss)->ss_flags |= SS_RTEFRAME; \
(ss)->ss_frame.f_vector = \
(uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_vector; \
memcpy(&(ss)->ss_frame.F_u, \
&(uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_exframe,\
_SIGSTATE_EXFRAMESIZE((ss)->ss_frame.f_format)); \
} \
\
(ss)->ss_fpstate.FPF_u1 = \
(uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_fpf_u1; \
if ((uc)->uc_flags & _UC_FPU) { /* non-null FP frame */ \
(ss)->ss_fpstate.FPF_u2 = \
(uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_fpf_u2; \
memcpy(&(ss)->ss_fpstate.fpf_regs, \
&(uc)->uc_mcontext.__fpregs.__fp_fpregs, \
sizeof((ss)->ss_fpstate.fpf_regs)); \
(ss)->ss_fpstate.fpf_fpcr = \
(uc)->uc_mcontext.__fpregs.__fp_pcr; \
(ss)->ss_fpstate.fpf_fpsr = \
(uc)->uc_mcontext.__fpregs.__fp_psr; \
(ss)->ss_fpstate.fpf_fpiar = \
(uc)->uc_mcontext.__fpregs.__fp_piaddr; \
(ss)->ss_flags |= SS_FPSTATE; \
} \
} while (/*CONSTCOND*/0)
#define _SIGSTATE_TO_MCONTEXT(ss, uc) \
do { \
memcpy(&(uc)->uc_mcontext.__gregs, &(ss)->ss_frame.f_regs, \
16 * sizeof(unsigned int)); \
(uc)->uc_mcontext.__gregs[_REG_PC] = (ss)->ss_frame.f_pc; \
(uc)->uc_mcontext.__gregs[_REG_PS] = (ss)->ss_frame.f_sr; \
(uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_format = \
(ss)->ss_frame.f_format; \
if ((ss)->ss_flags & SS_RTEFRAME) { \
(uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_vector = \
(ss)->ss_frame.f_vector; \
memcpy(&(uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_exframe,\
&(ss)->ss_frame.F_u, \
_SIGSTATE_EXFRAMESIZE((ss)->ss_frame.f_format)); \
} \
\
(uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_fpf_u1 = \
(ss)->ss_fpstate.FPF_u1; \
if ((ss)->ss_flags & SS_FPSTATE) { \
(uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_fpf_u2 = \
(ss)->ss_fpstate.FPF_u2; \
memcpy(&(uc)->uc_mcontext.__fpregs.__fp_fpregs, \
&(ss)->ss_fpstate.fpf_regs, \
sizeof((ss)->ss_fpstate.fpf_regs)); \
(uc)->uc_mcontext.__fpregs.__fp_pcr = \
(ss)->ss_fpstate.fpf_fpcr; \
(uc)->uc_mcontext.__fpregs.__fp_psr = \
(ss)->ss_fpstate.fpf_fpsr; \
(uc)->uc_mcontext.__fpregs.__fp_piaddr = \
(ss)->ss_fpstate.fpf_fpiar; \
(uc)->uc_flags |= _UC_FPU; \
} else \
(uc)->uc_flags &= ~_UC_FPU; \
} while (/*CONSTCOND*/0)
/*
* Stack frame layout when delivering a signal.
*/
struct sigframe {
int sf_ra; /* handler return address */
int sf_signum; /* signal number for handler */
int sf_code; /* additional info for handler */
struct sigcontext *sf_scp; /* context pointer for handler */
struct sigcontext sf_sc; /* actual context */
struct sigstate sf_state; /* state of the hardware */
};
#endif /* _KERNEL && __M68K_SIGNAL_PRIVATE */
#endif /* !_ANSI_SOURCE && !_POSIX_C_SOURCE && !_XOPEN_SOURCE */
#endif /* !_M68K_SIGNAL_H_ */
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