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b40ce4165d
Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha
113 lines
3.3 KiB
C
113 lines
3.3 KiB
C
/*
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* Copyright (c) 1994 Christos Zoulas
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* Copyright (c) 1995 Frank van der Linden
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* Copyright (c) 1995 Scott Bartram
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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. 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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* from: svr4_util.h,v 1.5 1994/11/18 02:54:31 christos Exp
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* from: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp
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* $FreeBSD$
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*/
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/*
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* This file is pretty much the same as Christos' svr4_util.h
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* (for now).
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*/
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#ifndef _LINUX_UTIL_H_
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#define _LINUX_UTIL_H_
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#include "opt_linux.h"
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/pmap.h>
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#include <machine/vmparam.h>
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#include <sys/exec.h>
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#include <sys/sysent.h>
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#include <sys/cdefs.h>
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static __inline caddr_t stackgap_init(void);
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static __inline void *stackgap_alloc(caddr_t *, size_t);
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#define szsigcode (*(curthread->td_proc->p_sysent->sv_szsigcode))
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static __inline caddr_t
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stackgap_init()
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{
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return (caddr_t)(PS_STRINGS - szsigcode - SPARE_USRSPACE);
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}
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static __inline void *
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stackgap_alloc(sgp, sz)
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caddr_t *sgp;
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size_t sz;
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{
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void *p = (void *) *sgp;
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sz = ALIGN(sz);
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if (*sgp + sz > (caddr_t)(PS_STRINGS - szsigcode))
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return NULL;
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*sgp += sz;
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return p;
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}
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extern const char linux_emul_path[];
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int linux_emul_find __P((struct thread *, caddr_t *, const char *, char *,
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char **, int));
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#define CHECKALT(p, sgp, path, i) \
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do { \
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int _error; \
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\
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_error = linux_emul_find(p, sgp, linux_emul_path, path, \
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&path, i); \
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if (_error == EFAULT) \
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return (_error); \
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} while (0)
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#define CHECKALTEXIST(p, sgp, path) CHECKALT(p, sgp, path, 0)
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#define CHECKALTCREAT(p, sgp, path) CHECKALT(p, sgp, path, 1)
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#define DUMMY(s) \
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int \
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linux_ ## s(struct thread *p, struct linux_ ## s ## _args *args) \
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{ \
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return (unsupported_msg(p, #s)); \
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} \
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struct __hack
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static __inline int
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unsupported_msg(struct thread *td, const char *fname)
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{
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printf("linux: syscall %s is obsoleted or not implemented (pid=%ld)\n",
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fname, (long)td->td_proc->p_pid);
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return (ENOSYS);
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}
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#endif /* !_LINUX_UTIL_H_ */
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