signal.h revision 1.14
1 /* $NetBSD: signal.h,v 1.14 2003/09/22 14:18:38 cl Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1989, 1991 Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)signal.h 7.16 (Berkeley) 3/17/91 32 */ 33 34 #ifndef _M68K_SIGNAL_H_ 35 #define _M68K_SIGNAL_H_ 36 37 #include <sys/featuretest.h> 38 39 typedef int sig_atomic_t; 40 41 #define __HAVE_SIGINFO 42 43 #if defined(_NETBSD_SOURCE) 44 /* 45 * Get the "code" values 46 */ 47 #include <machine/trap.h> 48 49 /* 50 * Information pushed on stack when a signal is delivered. 51 * This is used by the kernel to restore state following 52 * execution of the signal handler. It is also made available 53 * to the handler to allow it to restore state properly if 54 * a non-standard exit is performed. 55 */ 56 #if defined(__LIBC12_SOURCE__) || defined(_KERNEL) 57 struct sigcontext13 { 58 int sc_onstack; /* sigstack state to restore */ 59 int sc_mask; /* signal mask to restore (old style) */ 60 int sc_sp; /* sp to restore */ 61 int sc_fp; /* fp to restore */ 62 int sc_ap; /* ap to restore */ 63 int sc_pc; /* pc to restore */ 64 int sc_ps; /* psl to restore */ 65 }; 66 #endif /* __LIBC12_SOURCE__ || _KERNEL */ 67 68 struct sigcontext { 69 int sc_onstack; /* sigstack state to restore */ 70 int __sc_mask13; /* signal mask to restore (old style) */ 71 int sc_sp; /* sp to restore */ 72 int sc_fp; /* fp to restore */ 73 int sc_ap; /* ap to restore */ 74 int sc_pc; /* pc to restore */ 75 int sc_ps; /* psl to restore */ 76 sigset_t sc_mask; /* signal mask to restore (new style) */ 77 }; 78 79 /* 80 * The following macros are used to convert from a ucontext to sigcontext, 81 * and vice-versa. This is for building a sigcontext to deliver to old-style 82 * signal handlers, and converting back (in the event the handler modifies 83 * the context). 84 * 85 * On m68k, we also need the sigstate conversion macros below. 86 */ 87 #define _MCONTEXT_TO_SIGCONTEXT(uc, sc) \ 88 do { \ 89 (sc)->sc_sp = (uc)->uc_mcontext.__gregs[_REG_A7]; \ 90 (sc)->sc_fp = (uc)->uc_mcontext.__gregs[_REG_A6]; \ 91 /* sc_ap points to sigstate */ \ 92 (sc)->sc_pc = (uc)->uc_mcontext.__gregs[_REG_PC]; \ 93 (sc)->sc_ps = (uc)->uc_mcontext.__gregs[_REG_PS]; \ 94 } while (/*CONSTCOND*/0) 95 96 #define _SIGCONTEXT_TO_MCONTEXT(sc, uc) \ 97 do { \ 98 (uc)->uc_mcontext.__gregs[_REG_A7] = (sc)->sc_sp; \ 99 (uc)->uc_mcontext.__gregs[_REG_A6] = (sc)->sc_fp; \ 100 (uc)->uc_mcontext.__gregs[_REG_PC] = (sc)->sc_pc; \ 101 (uc)->uc_mcontext.__gregs[_REG_PS] = (sc)->sc_ps; \ 102 } while (/*CONSTCOND*/0) 103 104 105 106 #include <m68k/cpuframe.h> 107 108 /* 109 * Register state saved while kernel delivers a signal. 110 */ 111 struct sigstate { 112 int ss_flags; /* which of the following are valid */ 113 struct frame ss_frame; /* original exception frame */ 114 struct fpframe ss_fpstate; /* 68881/68882 state info */ 115 }; 116 117 #define SS_RTEFRAME 0x01 118 #define SS_FPSTATE 0x02 119 #define SS_USERREGS 0x04 120 121 #if defined(__M68K_SIGNAL_PRIVATE) 122 123 #ifdef _KERNEL 124 #define _SIGSTATE_EXFRAMESIZE(fmt) exframesize[(fmt)] 125 #endif 126 127 #define _MCONTEXT_TO_SIGSTATE(uc, ss) \ 128 do { \ 129 (ss)->ss_flags = SS_USERREGS; \ 130 memcpy(&(ss)->ss_frame.f_regs, &(uc)->uc_mcontext.__gregs, \ 131 16 * sizeof(unsigned int)); \ 132 (ss)->ss_frame.f_pc = (uc)->uc_mcontext.__gregs[_REG_PC]; \ 133 (ss)->ss_frame.f_sr = (uc)->uc_mcontext.__gregs[_REG_PS]; \ 134 (ss)->ss_frame.f_pad = 0; \ 135 (ss)->ss_frame.f_stackadj = 0; \ 136 (ss)->ss_frame.f_format = \ 137 (uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_format; \ 138 if ((ss)->ss_frame.f_format >= FMT4) { \ 139 (ss)->ss_flags |= SS_RTEFRAME; \ 140 (ss)->ss_frame.f_vector = \ 141 (uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_vector; \ 142 memcpy(&(ss)->ss_frame.F_u, \ 143 &(uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_exframe,\ 144 _SIGSTATE_EXFRAMESIZE((ss)->ss_frame.f_format)); \ 145 } \ 146 \ 147 (ss)->ss_fpstate.FPF_u1 = \ 148 (uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_fpf_u1; \ 149 if ((uc)->uc_flags & _UC_FPU) { /* non-null FP frame */ \ 150 (ss)->ss_fpstate.FPF_u2 = \ 151 (uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_fpf_u2; \ 152 memcpy(&(ss)->ss_fpstate.fpf_regs, \ 153 &(uc)->uc_mcontext.__fpregs.__fp_fpregs, \ 154 sizeof((ss)->ss_fpstate.fpf_regs)); \ 155 (ss)->ss_fpstate.fpf_fpcr = \ 156 (uc)->uc_mcontext.__fpregs.__fp_pcr; \ 157 (ss)->ss_fpstate.fpf_fpsr = \ 158 (uc)->uc_mcontext.__fpregs.__fp_psr; \ 159 (ss)->ss_fpstate.fpf_fpiar = \ 160 (uc)->uc_mcontext.__fpregs.__fp_piaddr; \ 161 (ss)->ss_flags |= SS_FPSTATE; \ 162 } \ 163 } while (/*CONSTCOND*/0) 164 165 #define _SIGSTATE_TO_MCONTEXT(ss, uc) \ 166 do { \ 167 memcpy(&(uc)->uc_mcontext.__gregs, &(ss)->ss_frame.f_regs, \ 168 16 * sizeof(unsigned int)); \ 169 (uc)->uc_mcontext.__gregs[_REG_PC] = (ss)->ss_frame.f_pc; \ 170 (uc)->uc_mcontext.__gregs[_REG_PS] = (ss)->ss_frame.f_sr; \ 171 (uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_format = \ 172 (ss)->ss_frame.f_format; \ 173 if ((ss)->ss_flags & SS_RTEFRAME) { \ 174 (uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_vector = \ 175 (ss)->ss_frame.f_vector; \ 176 memcpy(&(uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_exframe,\ 177 &(ss)->ss_frame.F_u, \ 178 _SIGSTATE_EXFRAMESIZE((ss)->ss_frame.f_format)); \ 179 } \ 180 \ 181 (uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_fpf_u1 = \ 182 (ss)->ss_fpstate.FPF_u1; \ 183 if ((ss)->ss_flags & SS_FPSTATE) { \ 184 (uc)->uc_mcontext.__mc_pad.__mc_frame.__mcf_fpf_u2 = \ 185 (ss)->ss_fpstate.FPF_u2; \ 186 memcpy(&(uc)->uc_mcontext.__fpregs.__fp_fpregs, \ 187 &(ss)->ss_fpstate.fpf_regs, \ 188 sizeof((ss)->ss_fpstate.fpf_regs)); \ 189 (uc)->uc_mcontext.__fpregs.__fp_pcr = \ 190 (ss)->ss_fpstate.fpf_fpcr; \ 191 (uc)->uc_mcontext.__fpregs.__fp_psr = \ 192 (ss)->ss_fpstate.fpf_fpsr; \ 193 (uc)->uc_mcontext.__fpregs.__fp_piaddr = \ 194 (ss)->ss_fpstate.fpf_fpiar; \ 195 (uc)->uc_flags |= _UC_FPU; \ 196 } else \ 197 (uc)->uc_flags &= ~_UC_FPU; \ 198 } while (/*CONSTCOND*/0) 199 200 #endif /* __M68K_SIGNAL_PRIVATE */ 201 202 #endif /* _NETBSD_SOURCE */ 203 #endif /* !_M68K_SIGNAL_H_ */ 204
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