linux_machdep.h revision 1.1
1 /* $NetBSD: linux_machdep.h,v 1.1 2001/01/19 01:31:24 manu Exp $ */ 2 3 /*- 4 * Copyright (c) 1995, 2000, 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Frank van der Linden and Emmanuel Dreyfus. 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 _POWERPC_LINUX_MACHDEP_H 40 #define _POWERPC_LINUX_MACHDEP_H 41 42 #include <compat/linux/common/linux_signal.h> 43 /* 44 * From Linux's include/asm-ppc/ptrace.h 45 * Needed for sigcontext 46 */ 47 struct linux_pt_regs { 48 unsigned long lgpr[32]; 49 unsigned long lnip; 50 unsigned long lmsr; 51 unsigned long lorig_gpr3; /* Used for restarting system calls */ 52 unsigned long lctr; 53 unsigned long llink; 54 unsigned long lxer; 55 unsigned long lccr; 56 unsigned long lmq; /* 601 only (not used at present) */ 57 /* Used on APUS to hold IPL value. */ 58 unsigned long ltrap; /* Reason for being here */ 59 unsigned long ldar; /* Fault registers */ 60 unsigned long ldsisr; 61 unsigned long lresult; /* Result of a system call */ 62 }; 63 64 /* 65 * From Linux's include/asm-ppc/sigcontext.h 66 * Linux/ppc calls that struct sigcontect_struct 67 */ 68 struct linux_sigcontext { 69 unsigned long _unused[4]; 70 int lsignal; 71 unsigned long lhandler; 72 unsigned long lmask; 73 struct linux_pt_regs *lregs; 74 }; 75 76 /* 77 * From Linux's include/asm-ppc/elf.h 78 */ 79 #define LINUX_ELF_NGREG 48 /* includes nip, msr, lr, etc. */ 80 #define LINUX_ELF_NFPREG 33 /* includes fpscr */ 81 typedef unsigned long linux_elf_greg_t; 82 typedef linux_elf_greg_t linux_elf_gregset_t[LINUX_ELF_NGREG]; 83 84 /* 85 * From Linux's include/asm-ppc/ptrace.h 86 */ 87 #define LINUX__SIGNAL_FRAMESIZE 64 88 89 /* 90 * We make the stack look like Linux expects it when calling a signal 91 * handler, but use the BSD way of calling the handler and sigreturn(). 92 * This means that we need to pass the pointer to the handler too. 93 * It is appended to the frame to not interfere with the rest of it. 94 * 95 * The following is from Linux's arch/ppc/kern/signal.c: 96 * 97 * > When we have signals to deliver, we set up on the 98 * > user stack, going down from the original stack pointer: 99 * > a sigregs struct 100 * > one or more sigcontext structs with 101 * > a gap of LINUX__SIGNAL_FRAMESIZE bytes 102 * > 103 * > Each of these things must be a multiple of 16 bytes in size. 104 * 105 * linux_sigregs is a linux_sigframe on other Linux ports. Linux/PowerPC 106 * defines a rt_sigframe struct, but it is only used for RT signals. for 107 * non RT signals, struct sigregs is used instead. 108 * 109 * About the ltramp filed: that trampoline code is not used. Instead, the 110 * sigcode (7 bytes long) trampoline code, copied by exec() on program startup 111 * is used. However, Linux binaries might expect it to be here. 112 */ 113 struct linux_sigregs { 114 linux_elf_gregset_t lgp_regs; 115 double lfp_regs[LINUX_ELF_NFPREG]; 116 unsigned long ltramp[2]; 117 /* 118 * Programs using the rs6000/xcoff abi can save up to 19 gp regs 119 * and 18 fp regs below sp before decrementing it. 120 */ 121 int labigap[56]; 122 }; 123 124 /* 125 * The following is not from Linux, we define it for convenience. It is the 126 * size of the abigap field of linux_sigregs. 127 */ 128 #define LINUX_ABIGAP (56*sizeof(int)) 129 130 /* 131 * linux sigframe in a nutshell (however we don't use it): 132 * 133 * struct linux_sigframe { 134 * struct linux_sigregs lsg; 135 * char _gap[LINUX__SIGNAL_FRAMESIZE]; 136 * struct sigcontext lsc; 137 * }; 138 */ 139 140 /* 141 * From Linux's include/asm-ppc/ucontext.h 142 */ 143 struct linux_ucontext { 144 unsigned long luc_flags; 145 struct linux_ucontext *luc_link; 146 linux_stack_t luc_stack; 147 struct linux_sigcontext luc_context; 148 linux_sigset_t luc_sigmask; /* mask last for extensibility */ 149 }; 150 151 /* 152 * From Linux's arch/ppc/kernel/signal.c, the real rt_sigframe 153 */ 154 struct linux_rt_sigframe 155 { 156 unsigned long _unused[2]; 157 struct linux_siginfo *lpinfo; 158 void *lpuc; 159 struct linux_siginfo linfo; 160 struct linux_ucontext luc; 161 }; 162 163 #ifdef _KERNEL 164 __BEGIN_DECLS 165 void linux_sendsig __P((sig_t, int, sigset_t *, u_long)); 166 dev_t linux_fakedev __P((dev_t)); 167 __END_DECLS 168 #endif /* _KERNEL */ 169 170 /* 171 * Major device numbers of VT device on both Linux and NetBSD. Used in 172 * ugly patch to fake device numbers. 173 * 174 * LINUX_CONS_MAJOR is from Linux's include/linux/major.h 175 */ 176 #define LINUX_CONS_MAJOR 4 177 #define NETBSD_WSCONS_MAJOR 47 178 179 /* 180 * Linux ioctl calls for the keyboard. 181 * 182 * From Linux's include/linux/kd.h 183 */ 184 #define LINUX_KDGKBMODE 0x4b44 185 #define LINUX_KDSKBMODE 0x4b45 186 #define LINUX_KDMKTONE 0x4b30 187 #define LINUX_KDSETMODE 0x4b3a 188 #define LINUX_KDENABIO 0x4b36 189 #define LINUX_KDDISABIO 0x4b37 190 #define LINUX_KDGETLED 0x4b31 191 #define LINUX_KDSETLED 0x4b32 192 #define LINUX_KDGKBTYPE 0x4B33 193 #define LINUX_KDGKBENT 0x4B46 194 195 /* 196 * Mode for KDSKBMODE which we don't have (we just use plain mode for this) 197 * 198 * From Linux's include/linux/kd.h 199 */ 200 #define LINUX_K_MEDIUMRAW 2 201 202 /* 203 * VT ioctl calls in Linux (the ones that the pcvt emulation in 204 * wscons can handle) 205 * 206 * From Linux's include/linux/vt.h 207 */ 208 #define LINUX_VT_OPENQRY 0x5600 209 #define LINUX_VT_GETMODE 0x5601 210 #define LINUX_VT_SETMODE 0x5602 211 #define LINUX_VT_GETSTATE 0x5603 212 #define LINUX_VT_RELDISP 0x5605 213 #define LINUX_VT_ACTIVATE 0x5606 214 #define LINUX_VT_WAITACTIVE 0x5607 215 #define LINUX_VT_DISALLOCATE 0x5608 216 217 /* 218 * This range used by VMWare (XXX) 219 * 220 * From Linux's include/linux/vt.h 221 * XXX It's not sure this s needed for powerpc 222 */ 223 #define LINUX_VMWARE_NONE 200 224 #define LINUX_VMWARE_LAST 237 225 226 /* 227 * Range of ioctls to just pass on, so that LKMs (like VMWare) can 228 * handle them. 229 * 230 * From Linux's include/linux/vt.h 231 */ 232 #define LINUX_IOCTL_MIN_PASS LINUX_VMWARE_NONE 233 #define LINUX_IOCTL_MAX_PASS (LINUX_VMWARE_LAST+8) 234 235 #ifdef _KERNEL 236 __BEGIN_DECLS /* XXX from NetBSD/i386. Not arch dependent? */ 237 void linux_syscall_intern __P((struct proc *)); 238 __END_DECLS 239 #endif /* !_KERNEL */ 240 241 #endif /* _POWERPC_LINUX_MACHDEP_H */ 242
Indexes created Tue Sep 23 02:09:52 GMT 2025