usr/src/cmd/mdb/sparc/kmdb/kmdb_asmutil.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 2010 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*
  28  * Utility Assembly routines used by the debugger.
  29  */
  30
  31
  32 #include <sys/asm_linkage.h>
  33 #include <sys/privregs.h>
  34 #include "mach_asmutil.h"
  35
  36
  37         ENTRY(get_nwin)
  38         GET_NWIN(%g4, %g3);     /* %g4 is scratch, %g3 set to nwin-1 */
  39         mov     %g3, %o0
  40         retl
  41         add     %o0, 1, %o0
  42         SET_SIZE(get_nwin)
  43
  44
  45
  46         ENTRY(get_fp)
  47         retl
  48         mov     %fp, %o0
  49         SET_SIZE(get_fp)
  50
  51
  52
  53         ENTRY(interrupts_on)
  54         rdpr    %pstate, %o0
  55         bset    PSTATE_IE, %o0
  56         retl
  57         wrpr    %o0, %pstate
  58         SET_SIZE(interrupts_on)
  59
  60
  61
  62         ENTRY(interrupts_off)
  63         rdpr    %pstate, %o0
  64         bclr    PSTATE_IE, %o0
  65         retl
  66         wrpr    %o0, %pstate
  67         SET_SIZE(interrupts_off)
  68
  69
  70
  71         ENTRY(get_tba)
  72         retl
  73         rdpr    %tba, %o0
  74         SET_SIZE(get_tba)
  75
  76
  77
  78         ENTRY(set_tba)
  79         retl
  80         wrpr    %o0, %tba
  81         SET_SIZE(set_tba)
  82