1*4887Schin /***********************************************************************
2*4887Schin *                                                                      *
3*4887Schin *               This software is part of the ast package               *
4*4887Schin *           Copyright (c) 1985-2007 AT&T Knowledge Ventures            *
5*4887Schin *                      and is licensed under the                       *
6*4887Schin *                  Common Public License, Version 1.0                  *
7*4887Schin *                      by AT&T Knowledge Ventures                      *
8*4887Schin *                                                                      *
9*4887Schin *                A copy of the License is available at                 *
10*4887Schin *            http://www.opensource.org/licenses/cpl1.0.txt             *
11*4887Schin *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12*4887Schin *                                                                      *
13*4887Schin *              Information and Software Systems Research               *
14*4887Schin *                            AT&T Research                             *
15*4887Schin *                           Florham Park NJ                            *
16*4887Schin *                                                                      *
17*4887Schin *                 Glenn Fowler <gsf@research.att.com>                  *
18*4887Schin *                  David Korn <dgk@research.att.com>                   *
19*4887Schin *                   Phong Vo <kpv@research.att.com>                    *
20*4887Schin *                                                                      *
21*4887Schin ***********************************************************************/
22*4887Schin #if defined(_UWIN) && defined(_BLD_ast)
23*4887Schin 
24*4887Schin void _STUB_vmsegment(){}
25*4887Schin 
26*4887Schin #else
27*4887Schin 
28*4887Schin #include	"vmhdr.h"
29*4887Schin 
30*4887Schin /*	Get the segment containing this address
31*4887Schin **
32*4887Schin **	Written by Kiem-Phong Vo, kpv@research.att.com, 02/07/95
33*4887Schin */
34*4887Schin 
35*4887Schin #if __STD_C
36*4887Schin Void_t* vmsegment(Vmalloc_t* vm, Void_t* addr)
37*4887Schin #else
38*4887Schin Void_t* vmsegment(vm, addr)
39*4887Schin Vmalloc_t*	vm;	/* region	*/
40*4887Schin Void_t*		addr;	/* address	*/
41*4887Schin #endif
42*4887Schin {
43*4887Schin 	reg Seg_t*	seg;
44*4887Schin 	reg Vmdata_t*	vd = vm->data;
45*4887Schin 
46*4887Schin 	if(!(vd->mode&VM_TRUST))
47*4887Schin 	{	if(ISLOCK(vd,0))
48*4887Schin 			return NIL(Void_t*);
49*4887Schin 		SETLOCK(vd,0);
50*4887Schin 	}
51*4887Schin 
52*4887Schin 	for(seg = vd->seg; seg; seg = seg->next)
53*4887Schin 		if((Vmuchar_t*)addr >= (Vmuchar_t*)seg->addr &&
54*4887Schin 		   (Vmuchar_t*)addr <  (Vmuchar_t*)seg->baddr )
55*4887Schin 			break;
56*4887Schin 
57*4887Schin 	CLRLOCK(vd,0);
58*4887Schin 	return seg ? (Void_t*)seg->addr : NIL(Void_t*);
59*4887Schin }
60*4887Schin 
61*4887Schin #endif
62