usr/src/cmd/dtrace/test/tst/sparc/pid/tst.branch.s

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <sys/asm_linkage.h>
  30
  31         DGDEF(__fsr_init_value)
  32         .word 0
  33
  34         ENTRY(waiting)
  35         retl
  36         ldub    [%o0], %o0
  37         SET_SIZE(waiting)
  38
  39         ENTRY(main)
  40         save    %sp, -SA(MINFRAME + 4), %sp
  41         stb     %g0, [%fp - 4]
  42 1:
  43         call    waiting
  44         sub     %fp, 4, %o0
  45         tst     %o0
  46         bz      1b
  47         nop
  48
  49         restore
  50
  51         tst     %g0
  52         be      other
  53         nop
  54
  55         ALTENTRY(bad)
  56         illtrap
  57         SET_SIZE(bad)
  58         SET_SIZE(main)
  59
  60         ENTRY(other)
  61         retl
  62         clr     %o0
  63         SET_SIZE(other)