/* $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 /* * 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 /* * 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_ */