linux_machdep.h revision 1.7
1 /* $NetBSD: linux_machdep.h,v 1.7 2005/11/11 23:22:08 chs 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_types.h> 43 #include <compat/linux/common/linux_signal.h> 44 #include <compat/linux/common/linux_siginfo.h> 45 46 /* 47 * From Linux's include/asm-ppc/ptrace.h 48 * Needed for sigcontext 49 */ 50 struct linux_pt_regs { 51 #define lpt_regs_fixreg_begin lgpr[0] 52 unsigned long lgpr[32]; 53 #define lpt_regs_fixreg_end lgpr[31] 54 unsigned long lnip; 55 unsigned long lmsr; 56 unsigned long lorig_gpr3; /* Used for restarting system calls */ 57 unsigned long lctr; 58 unsigned long llink; 59 unsigned long lxer; 60 unsigned long lccr; 61 unsigned long lmq; /* 601 only (not used at present) */ 62 /* Used on APUS to hold IPL value. */ 63 unsigned long ltrap; /* Reason for being here */ 64 unsigned long ldar; /* Fault registers */ 65 unsigned long ldsisr; 66 unsigned long lresult; /* Result of a system call */ 67 }; 68 69 /* 70 * From Linux's include/asm-ppc/sigcontext.h 71 * Linux/ppc calls that struct sigcontect_struct 72 */ 73 struct linux_sigcontext { 74 unsigned long _unused[4]; 75 int lsignal; 76 unsigned long lhandler; 77 unsigned long lmask; 78 struct linux_pt_regs *lregs; 79 }; 80 81 /* 82 * From Linux's include/asm-ppc/elf.h 83 */ 84 #define LINUX_ELF_NGREG 48 /* includes nip, msr, lr, etc. */ 85 #define LINUX_ELF_NFPREG 33 /* includes fpscr */ 86 typedef unsigned long linux_elf_greg_t; 87 typedef linux_elf_greg_t linux_elf_gregset_t[LINUX_ELF_NGREG]; 88 89 /* 90 * From Linux's include/asm-ppc/ptrace.h 91 */ 92 #define LINUX__SIGNAL_FRAMESIZE 64 93 94 /* 95 * We make the stack look like Linux expects it when calling a signal 96 * handler, but use the BSD way of calling the handler and sigreturn(). 97 * This means that we need to pass the pointer to the handler too. 98 * It is appended to the frame to not interfere with the rest of it. 99 * 100 * The following is from Linux's arch/ppc/kern/signal.c: 101 * 102 * > When we have signals to deliver, we set up on the 103 * > user stack, going down from the original stack pointer: 104 * > a sigregs struct 105 * > one or more sigcontext structs with 106 * > a gap of LINUX__SIGNAL_FRAMESIZE bytes 107 * > 108 * > Each of these things must be a multiple of 16 bytes in size. 109 * 110 * linux_sigregs is a linux_sigframe on other Linux ports. Linux/PowerPC 111 * defines a rt_sigframe struct, but it is only used for RT signals. for 112 * non RT signals, struct sigregs is used instead. 113 * 114 * About the ltramp filed: that trampoline code is not used. Instead, the 115 * sigcode (7 bytes long) trampoline code, copied by exec() on program startup 116 * is used. However, Linux binaries might expect it to be here. 117 */ 118 struct linux_sigregs { 119 linux_elf_gregset_t lgp_regs; 120 double lfp_regs[LINUX_ELF_NFPREG]; 121 unsigned long ltramp[2]; 122 /* 123 * Programs using the rs6000/xcoff abi can save up to 19 gp regs 124 * and 18 fp regs below sp before decrementing it. 125 */ 126 int labigap[56]; 127 }; 128 129 /* 130 * The following is not from Linux, we define it for convenience. It is the 131 * size of the abigap field of linux_sigregs. 132 */ 133 #define LINUX_ABIGAP (56*sizeof(int)) 134 135 /* 136 * linux sigframe in a nutshell (however we don't use it): 137 * 138 * struct linux_sigframe { 139 * char _gap[LINUX__SIGNAL_FRAMESIZE]; 140 * struct sigcontext lsc; 141 * struct linux_sigregs lsg; 142 * }; 143 */ 144 145 /* 146 * From Linux's include/asm-ppc/ucontext.h 147 */ 148 struct linux_ucontext { 149 unsigned long luc_flags; 150 struct linux_ucontext *luc_link; 151 linux_stack_t luc_stack; 152 struct linux_sigcontext luc_context; 153 linux_sigset_t luc_sigmask; /* mask last for extensibility */ 154 }; 155 156 /* 157 * From Linux's arch/ppc/kernel/signal.c, the real rt_sigframe 158 */ 159 struct linux_rt_sigframe 160 { 161 unsigned long _unused[2]; 162 struct linux_siginfo *lpinfo; 163 void *lpuc; 164 struct linux_siginfo linfo; 165 struct linux_ucontext luc; 166 }; 167 168 /* 169 * Major device numbers of VT device on both Linux and NetBSD. Used in 170 * ugly patch to fake device numbers. 171 * 172 * LINUX_CONS_MAJOR is from Linux's include/linux/major.h 173 */ 174 #define LINUX_CONS_MAJOR 4 175 176 /* 177 * Linux ioctl calls for the keyboard. 178 * 179 * From Linux's include/linux/kd.h 180 */ 181 #define LINUX_KDGKBMODE 0x4b44 182 #define LINUX_KDSKBMODE 0x4b45 183 #define LINUX_KDMKTONE 0x4b30 184 #define LINUX_KDSETMODE 0x4b3a 185 #define LINUX_KDENABIO 0x4b36 186 #define LINUX_KDDISABIO 0x4b37 187 #define LINUX_KDGETLED 0x4b31 188 #define LINUX_KDSETLED 0x4b32 189 #define LINUX_KDGKBTYPE 0x4B33 190 #define LINUX_KDGKBENT 0x4B46 191 192 /* 193 * Mode for KDSKBMODE which we don't have (we just use plain mode for this) 194 * 195 * From Linux's include/linux/kd.h 196 */ 197 #define LINUX_K_MEDIUMRAW 2 198 199 /* 200 * VT ioctl calls in Linux (the ones that the pcvt emulation in 201 * wscons can handle) 202 * 203 * From Linux's include/linux/vt.h 204 */ 205 #define LINUX_VT_OPENQRY 0x5600 206 #define LINUX_VT_GETMODE 0x5601 207 #define LINUX_VT_SETMODE 0x5602 208 #define LINUX_VT_GETSTATE 0x5603 209 #define LINUX_VT_RELDISP 0x5605 210 #define LINUX_VT_ACTIVATE 0x5606 211 #define LINUX_VT_WAITACTIVE 0x5607 212 #define LINUX_VT_DISALLOCATE 0x5608 213 214 /* 215 * This range used by VMWare (XXX) 216 * 217 * From Linux's include/linux/vt.h 218 * XXX It's not sure this s needed for powerpc 219 */ 220 #define LINUX_VMWARE_NONE 200 221 #define LINUX_VMWARE_LAST 237 222 223 /* 224 * Range of ioctls to just pass on, so that LKMs (like VMWare) can 225 * handle them. 226 * 227 * From Linux's include/linux/vt.h 228 */ 229 #define LINUX_IOCTL_MIN_PASS LINUX_VMWARE_NONE 230 #define LINUX_IOCTL_MAX_PASS (LINUX_VMWARE_LAST+8) 231 232 #ifdef _KERNEL 233 __BEGIN_DECLS /* XXX from NetBSD/i386. Not arch dependent? */ 234 void linux_syscall_intern __P((struct proc *)); 235 __END_DECLS 236 #endif /* !_KERNEL */ 237 238 239 #endif /* _POWERPC_LINUX_MACHDEP_H */ 240
Indexes created Mon Sep 22 21:09:42 GMT 2025