fb526e055c
* Increase the size of sigset_t to accomodate 128 signals -- adding new versions of sys_setprocmask(), sys_sigaction(), sys_sigpending() and sys_sigsuspend() to handle the changed arguments. * Abstract the guts of sys_sigaltstack(), sys_setprocmask(), sys_sigaction(), sys_sigpending() and sys_sigsuspend() into separate functions, and call them from all the emulations rather than hard-coding everything. (Avoids uses the stackgap crap for these system calls.) * Add a new flag (p_checksig) to indicate that a process may have signals pending and userret() needs to do the full (slow) check. * Eliminate SAS_ALTSTACK; it's exactly the inverse of SS_DISABLE. * Correct emulation bugs with restoring SS_ONSTACK. * Make the signal mask in the sigcontext always use the emulated mask format. * Store signals internally in sigaction structures, rather than maintaining a bunch of little sigsets for each SA_* bit. * Keep track of where we put the signal trampoline, rather than figuring it out in *_sendsig(). * Issue a warning when a non-emulated sigaction bit is observed. * Add missing emulated signals, and a native SIGPWR (currently not used). * Implement the `not reset when caught' semantics for relevant signals. Note: Only code touched by the i386 port has been modified. Other ports and emulations need to be updated.
121 lines
3.7 KiB
C
121 lines
3.7 KiB
C
/* $NetBSD: linux_machdep.h,v 1.7 1998/09/11 12:50:07 mycroft Exp $ */
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/*
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* Copyright (c) 1995 Frank van der Linden
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project
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* by Frank van der Linden
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _LINUX_MACHDEP_H
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#define _LINUX_MACHDEP_H
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/*
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* The Linux sigcontext, pretty much a standard 386 trapframe.
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*/
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struct linux_sigcontext {
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int sc_gs;
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int sc_fs;
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int sc_es;
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int sc_ds;
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int sc_edi;
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int sc_esi;
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int sc_ebp;
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int sc_esp;
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int sc_ebx;
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int sc_edx;
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int sc_ecx;
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int sc_eax;
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int sc_trapno;
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int sc_err;
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int sc_eip;
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int sc_cs;
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int sc_eflags;
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int sc_esp_at_signal;
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int sc_ss;
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int sc_387;
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linux_sigset_t sc_mask;
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int sc_cr2;
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};
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/*
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* We make the stack look like Linux expects it when calling a signal
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* handler, but use the BSD way of calling the handler and sigreturn().
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* This means that we need to pass the pointer to the handler too.
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* It is appended to the frame to not interfere with the rest of it.
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*/
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struct linux_sigframe {
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int sf_sig;
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struct linux_sigcontext sf_sc;
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sig_t sf_handler;
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};
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void linux_sendsig __P((sig_t, int, sigset_t *, u_long));
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dev_t linux_fakedev __P((dev_t));
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/*
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* Major device numbers of VT device on both Linux and NetBSD. Used in
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* ugly patch to fake device numbers.
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*/
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#define LINUX_CONS_MAJOR 4
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#define NETBSD_PCCONS_MAJOR 12
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#define NETBSD_WSCONS_MAJOR 47
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/*
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* Linux ioctl calls for the keyboard.
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*/
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#define LINUX_KDGKBMODE 0x4b44
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#define LINUX_KDSKBMODE 0x4b45
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#define LINUX_KDMKTONE 0x4b30
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#define LINUX_KDSETMODE 0x4b3a
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#define LINUX_KDENABIO 0x4b36
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#define LINUX_KDDISABIO 0x4b37
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#define LINUX_KDGETLED 0x4b31
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#define LINUX_KDSETLED 0x4b32
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#define LINUX_KDGKBTYPE 0x4B33
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#define LINUX_KDGKBENT 0x4B46
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/*
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* Mode for KDSKBMODE which we don't have (we just use plain mode for this)
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*/
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#define LINUX_K_MEDIUMRAW 2
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/*
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* VT ioctl calls in Linux (the ones that pcvt can handle)
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*/
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#define LINUX_VT_OPENQRY 0x5600
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#define LINUX_VT_GETMODE 0x5601
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#define LINUX_VT_SETMODE 0x5602
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#define LINUX_VT_GETSTATE 0x5603
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#define LINUX_VT_RELDISP 0x5605
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#define LINUX_VT_ACTIVATE 0x5606
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#define LINUX_VT_WAITACTIVE 0x5607
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#endif /* _LINUX_MACHDEP_H */
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