linux_machdep.h revision 1.3
1 /* $NetBSD: linux_machdep.h,v 1.3 2002/02/15 16:48:01 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by ITOH Yasufumi. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _M68K_LINUX_MACHDEP_H 40 #define _M68K_LINUX_MACHDEP_H 41 42 #include <m68k/frame.h> 43 #include <compat/linux/common/linux_signal.h> 44 45 /* 46 * Signal stack definitions for old signal interface. 47 */ 48 49 struct linux_sigcontext { 50 linux_old_sigset_t sc_mask; /* signal mask to restore */ 51 u_int sc_sp; /* usp to restore */ 52 u_int sc_d0; 53 u_int sc_d1; 54 u_int sc_a0; 55 u_int sc_a1; 56 u_short sc_ps; /* processor status (sr reg) */ 57 u_int sc_pc; 58 59 /* 60 * The Linux sigstate (state of hardware). 61 */ 62 struct linux_sigstate { 63 u_short ss_format:4, /* frame # */ 64 ss_vector:12; /* vector offset */ 65 struct linux_fpframe { 66 u_int fpf_regs[2][3]; /* only fp0 and fp1 */ 67 u_int fpf_fpcr; 68 u_int fpf_fpsr; 69 u_int fpf_fpiar; 70 union FPF_u1 FPF_u1; 71 union FPF_u2 FPF_u2; 72 } ss_fpstate; /* 68881/68882 state info */ 73 union F_u ss_frame; /* original exception frame */ 74 } sc_ss; 75 }; 76 77 /* 78 * The Linux compatible signal frame 79 * On Linux, the sigtramp code is on the frame structure. 80 */ 81 struct linux_sigframe { 82 void *sf_psigtramp; 83 int sf_signum; /* signo for handler */ 84 int sf_code; /* Linux stores vector offset here */ 85 struct linux_sigcontext *sf_scp; /* context ptr for handler */ 86 int sf_sigtramp[2]; 87 struct linux_sigc2 { 88 #if LINUX__NSIG_WORDS > 1 89 /* This breaks backward compatibility, but Linux 2.1 has.... */ 90 u_long c_extrasigmask[LINUX__NSIG_WORDS - 1]; 91 #endif 92 struct linux_sigcontext c_sc; /* actual context */ 93 } sf_c; 94 }; 95 96 #define LINUX_SF_SIGTRAMP0 0xDEFC0014 /* addaw #20,sp */ 97 #define LINUX_SF_SIGTRAMP1 (0x70004E40 | (LINUX_SYS_sigreturn << 16)) 98 /* moveq #LINUX_SYS_sigreturn,d0; trap #0 */ 99 100 /* 101 * Signal stack definitions for new RT signal interface. 102 */ 103 104 typedef struct linux_gregset { 105 u_int gr_regs[16]; /* d0-d7/a0-a6/usp */ 106 u_int gr_pc; 107 u_int gr_sr; 108 } linux_gregset_t; 109 110 typedef struct linux_fpregset { 111 u_int fpr_fpcr; 112 u_int fpr_fpsr; 113 u_int fpr_fpiar; 114 u_int fpr_regs[8][3]; /* fp0-fp7 */ 115 } linux_fpregset_t; 116 117 struct linux_mcontext { 118 int mc_version; 119 linux_gregset_t mc_gregs; 120 linux_fpregset_t mc_fpregs; 121 }; 122 123 #define LINUX_MCONTEXT_VERSION 2 124 125 struct linux_ucontext { 126 u_long uc_flags; /* 0 */ 127 struct linux_ucontext *uc_link; /* 0 */ 128 linux_stack_t uc_stack; 129 struct linux_mcontext uc_mc; 130 struct linux_rt_sigstate { 131 struct linux_rt_fpframe { 132 union FPF_u1 FPF_u1; 133 union FPF_u2 FPF_u2; 134 } ss_fpstate; 135 unsigned int ss_unused1:16, 136 ss_format:4, 137 ss_vector:12; 138 union F_u ss_frame; /* original exception frame */ 139 int ss_unused2[4]; 140 } uc_ss; 141 linux_sigset_t uc_sigmask; 142 }; 143 144 /* 145 * The Linux compatible RT signal frame 146 * On Linux, the sigtramp code is on the frame structure. 147 */ 148 struct linux_rt_sigframe { 149 void *sf_psigtramp; 150 int sf_signum; 151 struct linux_siginfo *sf_pinfo; 152 void *sf_puc; 153 struct linux_siginfo sf_info; 154 struct linux_ucontext sf_uc; 155 int sf_sigtramp[2]; 156 }; 157 158 #define LINUX_RT_SF_SIGTRAMP0 (0x203C0000 | (LINUX_SYS_rt_sigreturn >> 16)) 159 #define LINUX_RT_SF_SIGTRAMP1 (0x00004E40 | (LINUX_SYS_rt_sigreturn << 16)) 160 /* movel #LINUX_SYS_rt_sigreturn,#d0; trap #0 */ 161 162 #endif /* _M68K_LINUX_MACHDEP_H */ 163
Indexes created Wed Oct 01 07:09:59 GMT 2025