Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
NetBSD/sys/compat/darwin/darwin_exec.h

67 lines
2.8 KiB
C
Raw Normal View History

In MacOS X.3, the kernel maps tw opages of memory in every user process. This areas is called the comm pages. It is used to provide fast access to several data and functions. The comm pages are mapped starting at 0xffff800 (address chosed so that absolute branch can be used, so it can be accessed even when dynamic linking is not ready). NetBSD has the user stack here, so we need to provide a Darwin-specific stack setup routine which sets the top of the stack at 0xbfff0000. This implementation is not complete but it does enough to get MacOS X.3 starting again (static binaries run, dynamic binaries still have an issue). in the comm pages functions, we only implement bcopy, pthread_self and memcpy. TODO: - clean up the powerpc specific code from MD parts - for now we map only one page to avoid a crash, we want two pages. - write all the comm functions.
2004-07-03 04:14:30 +04:00
/* $NetBSD: darwin_exec.h,v 1.11 2004/07/03 00:14:30 manu Exp $ */
The kernel now builds with COMPAT_DARWIN.
2002-11-13 02:40:19 +03:00
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Emmanuel Dreyfus
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _DARWIN_EXEC_H_
#define _DARWIN_EXEC_H_
Added implementation for cthread_self() and cthread_set_self(). Theses are used to get and set the thread user value, which is an opaque pointer to a per thread structure stored in userland. cthread_self() is used by Darwin as an implementation for pthread_self(), which return the thread id. We use the p_emuldata field of struct proc in order to keep track of the thread user value. For now the value is per-process, but we will make it per-thread when we will take care of threading. While we are there, do some KNF
2002-12-07 18:33:01 +03:00
#include <compat/mach/mach_exec.h>
/*
* Because it can be used by Mach emulation code as well as Darwin emulation
* code, this structure must begin with a struct mach_emuldata.
*/
struct darwin_emuldata {
struct mach_emuldata ded_mach_emuldata;
More hacks to make Darwin's /sbin/init happy with its pid.
2002-12-28 03:15:23 +03:00
pid_t ded_fakepid;
The VRAM offset seems to be the offset of the framebuffer within the VRAM. Until we really map the whole VRAM, this is 0. Two missing files in the last commit
2003-12-28 01:06:19 +03:00
dev_t ded_wsdev; /* display to restore on exit */
Correctly terminate the iohidsystem thread (with appropriate cleanups of the shared memory), when the display server quits. We are now able to restart the X server without the need to reboot the machine. That's better.
2003-10-25 14:43:45 +04:00
int *ded_hidsystem_finished; /* iohidsystem thread finished flag */
The VRAM offset seems to be the offset of the framebuffer within the VRAM. Until we really map the whole VRAM, this is 0. Two missing files in the last commit
2003-12-28 01:06:19 +03:00
int ded_flags; /* flags, see below */
void *ded_vramoffset; /* Where VRAM was mapped? */
Added implementation for cthread_self() and cthread_set_self(). Theses are used to get and set the thread user value, which is an opaque pointer to a per thread structure stored in userland. cthread_self() is used by Darwin as an implementation for pthread_self(), which return the thread id. We use the p_emuldata field of struct proc in order to keep track of the thread user value. For now the value is per-process, but we will make it per-thread when we will take care of threading. While we are there, do some KNF
2002-12-07 18:33:01 +03:00
};
Start to implement another strange feature: signals as Mach software exceptions. This can be requested with ptrace, and cause signals to be transformed into a particular kind of exception.
2003-11-20 10:12:34 +03:00
#define DARWIN_DED_SIGEXC 1 /* Mach exceptions instead of signals */
Back out the lwp/ktrace changes. They contained a lot of colateral damage, and need to be examined and discussed more.
2003-06-30 02:28:00 +04:00
int exec_darwin_copyargs(struct proc *, struct exec_package *,
Remove __P
2002-11-29 00:23:54 +03:00
struct ps_strings *, char **, void *);
int exec_darwin_probe(char **);
In MacOS X.3, the kernel maps tw opages of memory in every user process. This areas is called the comm pages. It is used to provide fast access to several data and functions. The comm pages are mapped starting at 0xffff800 (address chosed so that absolute branch can be used, so it can be accessed even when dynamic linking is not ready). NetBSD has the user stack here, so we need to provide a Darwin-specific stack setup routine which sets the top of the stack at 0xbfff0000. This implementation is not complete but it does enough to get MacOS X.3 starting again (static binaries run, dynamic binaries still have an issue). in the comm pages functions, we only implement bcopy, pthread_self and memcpy. TODO: - clean up the powerpc specific code from MD parts - for now we map only one page to avoid a crash, we want two pages. - write all the comm functions.
2004-07-03 04:14:30 +04:00
int darwin_exec_setup_stack(struct proc *, struct exec_package *);
The kernel now builds with COMPAT_DARWIN.
2002-11-13 02:40:19 +03:00
extern const struct emul emul_darwin;
#endif /* !_DARWIN_EXEC_H_ */