Mercurial > illumos > illumos-gate

comparison usr/src/uts/intel/ia32/os/archdep.c @ 12613:4c5722bc28dc

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
PSARC/2010/169 EOF lx brand 6959264 EOF lx brand
author Surya Prakki <Surya.Prakki@Sun.COM>
date Fri, 11 Jun 2010 12:07:14 -0700
parents 8e4cf0dbd8ca
children ab9ae749152f
comparison
equal deleted inserted replaced
12612:29da3d2c2ccb 12613:4c5722bc28dc
17 * information: Portions Copyright [yyyy] [name of copyright owner] 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 * 18 *
19 * CDDL HEADER END 19 * CDDL HEADER END
20 */ 20 */
21 /* 21 /*
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 22 * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Use is subject to license terms.
24 */ 23 */
25 24
26 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 25 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
27 /* All Rights Reserved */ 26 /* All Rights Reserved */
28 27
602 601
603 /*ARGSUSED*/ 602 /*ARGSUSED*/
604 static greg_t 603 static greg_t
605 fix_segreg(greg_t sr, int iscs, model_t datamodel) 604 fix_segreg(greg_t sr, int iscs, model_t datamodel)
606 { 605 {
607 kthread_t *t = curthread;
608
609 switch (sr &= 0xffff) { 606 switch (sr &= 0xffff) {
610 607
611 case 0: 608 case 0:
612 if (iscs == IS_CS) 609 if (iscs == IS_CS)
613 return (0 | SEL_UPL); 610 return (0 | SEL_UPL);
637 case LWPGS_SEL: 634 case LWPGS_SEL:
638 case SEL_UPL: 635 case SEL_UPL:
639 return (sr); 636 return (sr);
640 default: 637 default:
641 break; 638 break;
642 }
643
644 /*
645 * Allow this process's brand to do any necessary segment register
646 * manipulation.
647 */
648 if (PROC_IS_BRANDED(t->t_procp) && BRMOP(t->t_procp)->b_fixsegreg) {
649 greg_t bsr = BRMOP(t->t_procp)->b_fixsegreg(sr, datamodel);
650
651 if (bsr == 0 && iscs == IS_CS)
652 return (0 | SEL_UPL);
653 else
654 return (bsr);
655 } 639 }
656 640
657 /* 641 /*
658 * Force it into the LDT in ring 3 for 32-bit processes, which by 642 * Force it into the LDT in ring 3 for 32-bit processes, which by
659 * default do not have an LDT, so that any attempt to use an invalid 643 * default do not have an LDT, so that any attempt to use an invalid