usr/src/uts/i86pc/ml/kdi_subr.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 #include <sys/asm_misc.h>
  31 #include <sys/regset.h>
  32 #include <sys/privregs.h>
  33 #include <sys/psw.h>
  34
  35 #if defined(__lint)
  36 #include <sys/types.h>
  37 #include <sys/segments.h>
  38 #endif
  39
  40 #if defined(__lint)
  41
  42 ulong_t
  43 kdi_getdr0(void)
  44 {
  45         return (0);
  46 }
  47
  48 ulong_t
  49 kdi_getdr1(void)
  50 {
  51         return (0);
  52 }
  53
  54 ulong_t
  55 kdi_getdr2(void)
  56 {
  57         return (0);
  58 }
  59
  60 ulong_t
  61 kdi_getdr3(void)
  62 {
  63         return (0);
  64 }
  65
  66 ulong_t
  67 kdi_getdr6(void)
  68 {
  69         return (0);
  70 }
  71
  72 ulong_t
  73 kdi_getdr7(void)
  74 {
  75         return (0);
  76 }
  77
  78 /*ARGSUSED*/
  79 void
  80 kdi_setdr0(ulong_t value)
  81 {}
  82
  83 /*ARGSUSED*/
  84 void
  85 kdi_setdr1(ulong_t value)
  86 {}
  87
  88 /*ARGSUSED*/
  89 void
  90 kdi_setdr2(ulong_t value)
  91 {}
  92
  93 /*ARGSUSED*/
  94 void
  95 kdi_setdr3(ulong_t value)
  96 {}
  97
  98 /*ARGSUSED*/
  99 void
 100 kdi_setdr4(ulong_t value)
 101 {}
 102
 103 /*ARGSUSED*/
 104 void
 105 kdi_setdr6(ulong_t value)
 106 {}
 107
 108 /*ARGSUSED*/
 109 void
 110 kdi_setdr7(ulong_t value)
 111 {}
 112
 113 #else
 114
 115 #if defined(__amd64)
 116
 117 #define GETDREG(name, r)        \
 118         ENTRY_NP(name);         \
 119         movq    r, %rax;        \
 120         ret;                    \
 121         SET_SIZE(name)
 122
 123 #define SETDREG(name, r)        \
 124         ENTRY_NP(name);         \
 125         movq    %rdi, r;        \
 126         ret;                    \
 127         SET_SIZE(name)
 128
 129 #elif defined(__i386)
 130
 131 #define GETDREG(name, r)        \
 132         ENTRY_NP(name);         \
 133         movl    r, %eax;        \
 134         ret;                    \
 135         SET_SIZE(name)
 136
 137 #define SETDREG(name, r)        \
 138         ENTRY_NP(name);         \
 139         movl    4(%esp), %eax;  \
 140         movl    %eax, r;        \
 141         ret;                    \
 142         SET_SIZE(name)
 143
 144 #endif
 145
 146         GETDREG(kdi_getdr0, %dr0)
 147         GETDREG(kdi_getdr1, %dr1)
 148         GETDREG(kdi_getdr2, %dr2)
 149         GETDREG(kdi_getdr3, %dr3)
 150         GETDREG(kdi_getdr6, %dr6)
 151         GETDREG(kdi_getdr7, %dr7)
 152
 153         SETDREG(kdi_setdr0, %dr0)
 154         SETDREG(kdi_setdr1, %dr1)
 155         SETDREG(kdi_setdr2, %dr2)
 156         SETDREG(kdi_setdr3, %dr3)
 157         SETDREG(kdi_setdr6, %dr6)
 158         SETDREG(kdi_setdr7, %dr7)
 159
 160 #endif  /* __lint */