linux_machdep.h revision 1.6
1 /* $NetBSD: linux_machdep.h,v 1.6 2007/12/04 18:40:14 dsl 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_types.h> 44 #include <compat/linux/common/linux_signal.h> 45 #include <compat/linux/common/linux_siginfo.h> 46 47 /* 48 * Signal stack definitions for old signal interface. 49 */ 50 51 struct linux_sigcontext { 52 linux_old_sigset_t sc_mask; /* signal mask to restore */ 53 u_int sc_sp; /* usp to restore */ 54 u_int sc_d0; 55 u_int sc_d1; 56 u_int sc_a0; 57 u_int sc_a1; 58 u_short sc_ps; /* processor status (sr reg) */ 59 u_int sc_pc; 60 61 /* 62 * The Linux sigstate (state of hardware). 63 */ 64 struct linux_sigstate { 65 u_short ss_format:4, /* frame # */ 66 ss_vector:12; /* vector offset */ 67 struct linux_fpframe { 68 u_int fpf_regs[2][3]; /* only fp0 and fp1 */ 69 u_int fpf_fpcr; 70 u_int fpf_fpsr; 71 u_int fpf_fpiar; 72 union FPF_u1 FPF_u1; 73 union FPF_u2 FPF_u2; 74 } ss_fpstate; /* 68881/68882 state info */ 75 union F_u ss_frame; /* original exception frame */ 76 } sc_ss; 77 }; 78 79 /* 80 * The Linux compatible signal frame 81 * On Linux, the sigtramp code is on the frame structure. 82 */ 83 struct linux_sigframe { 84 void *sf_psigtramp; 85 int sf_signum; /* signo for handler */ 86 int sf_code; /* Linux stores vector offset here */ 87 struct linux_sigcontext *sf_scp; /* context ptr for handler */ 88 int sf_sigtramp[2]; 89 struct linux_sigc2 { 90 #if LINUX__NSIG_WORDS > 1 91 /* This breaks backward compatibility, but Linux 2.1 has.... */ 92 u_long c_extrasigmask[LINUX__NSIG_WORDS - 1]; 93 #endif 94 struct linux_sigcontext c_sc; /* actual context */ 95 } sf_c; 96 }; 97 98 #define LINUX_SF_SIGTRAMP0 0xDEFC0014 /* addaw #20,sp */ 99 #define LINUX_SF_SIGTRAMP1 (0x70004E40 | (LINUX_SYS_sigreturn << 16)) 100 /* moveq #LINUX_SYS_sigreturn,d0; trap #0 */ 101 102 /* 103 * Signal stack definitions for new RT signal interface. 104 */ 105 106 typedef struct linux_gregset { 107 u_int gr_regs[16]; /* d0-d7/a0-a6/usp */ 108 u_int gr_pc; 109 u_int gr_sr; 110 } linux_gregset_t; 111 112 typedef struct linux_fpregset { 113 u_int fpr_fpcr; 114 u_int fpr_fpsr; 115 u_int fpr_fpiar; 116 u_int fpr_regs[8][3]; /* fp0-fp7 */ 117 } linux_fpregset_t; 118 119 struct linux_mcontext { 120 int mc_version; 121 linux_gregset_t mc_gregs; 122 linux_fpregset_t mc_fpregs; 123 }; 124 125 #define LINUX_MCONTEXT_VERSION 2 126 127 struct linux_ucontext { 128 u_long uc_flags; /* 0 */ 129 struct linux_ucontext *uc_link; /* 0 */ 130 linux_stack_t uc_stack; 131 struct linux_mcontext uc_mc; 132 struct linux_rt_sigstate { 133 struct linux_rt_fpframe { 134 union FPF_u1 FPF_u1; 135 union FPF_u2 FPF_u2; 136 } ss_fpstate; 137 unsigned int ss_unused1:16, 138 ss_format:4, 139 ss_vector:12; 140 union F_u ss_frame; /* original exception frame */ 141 int ss_unused2[4]; 142 } uc_ss; 143 linux_sigset_t uc_sigmask; 144 }; 145 146 /* 147 * The Linux compatible RT signal frame 148 * On Linux, the sigtramp code is on the frame structure. 149 */ 150 struct linux_rt_sigframe { 151 void *sf_psigtramp; 152 int sf_signum; 153 struct linux_siginfo *sf_pinfo; 154 void *sf_puc; 155 struct linux_siginfo sf_info; 156 struct linux_ucontext sf_uc; 157 int sf_sigtramp[2]; 158 }; 159 160 #define LINUX_RT_SF_SIGTRAMP0 (0x203C0000 | (LINUX_SYS_rt_sigreturn >> 16)) 161 #define LINUX_RT_SF_SIGTRAMP1 (0x00004E40 | (LINUX_SYS_rt_sigreturn << 16)) 162 /* movel #LINUX_SYS_rt_sigreturn,#d0; trap #0 */ 163 164 #ifdef _KERNEL 165 __BEGIN_DECLS 166 void linux_syscall_intern(struct proc *); 167 __END_DECLS 168 #endif /* !_KERNEL */ 169 170 #endif /* _M68K_LINUX_MACHDEP_H */ 171
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