arch/metag/tbx/tbidspram.S

   1 /*
   2  * tbidspram.S
   3  *
   4  * Copyright (C) 2009, 2012 Imagination Technologies.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it under
   7  * the terms of the GNU General Public License version 2 as published by the
   8  * Free Software Foundation.
   9  *
  10  * Explicit state save and restore routines forming part of the thread binary
  11  * interface for META processors
  12  */
  13
  14         .file   "tbidspram.S"
  15
  16 /* These aren't generally useful to a user so for now, they arent publically available */
  17 #define _TBIECH_DSPRAM_DUA_S    8
  18 #define _TBIECH_DSPRAM_DUA_BITS 0x7f00
  19 #define _TBIECH_DSPRAM_DUB_S    0
  20 #define _TBIECH_DSPRAM_DUB_BITS 0x007f
  21
  22 /*
  23  * void *__TBIDspramSaveA( short DspramSizes, void *pExt )
  24  */
  25         .text
  26         .balign 4
  27         .global ___TBIDspramSaveA
  28         .type   ___TBIDspramSaveA,function
  29 ___TBIDspramSaveA:
  30
  31         SETL    [A0StP++], D0.5, D1.5
  32         MOV     A0.3, D0Ar2
  33
  34         /* D1Ar1 - Dspram Sizes
  35          * A0.4  - Pointer to buffer
  36          */
  37
  38         /* Save the specified amount of dspram DUA */
  39 DL      MOV     D0AR.0, #0
  40         LSR     D1Ar1, D1Ar1, #_TBIECH_DSPRAM_DUA_S
  41         AND     D1Ar1, D1Ar1, #(_TBIECH_DSPRAM_DUA_BITS >> _TBIECH_DSPRAM_DUA_S)
  42         SUB     TXRPT, D1Ar1, #1
  43 $L1:
  44 DL      MOV     D0Re0, [D0AR.0++]
  45 DL      MOV     D0Ar6, [D0AR.0++]
  46 DL      MOV     D0Ar4, [D0AR.0++]
  47 DL      MOV     D0.5,  [D0AR.0++]
  48         MSETL   [A0.3++], D0Re0, D0Ar6, D0Ar4, D0.5
  49
  50         BR      $L1
  51
  52         GETL    D0.5, D1.5, [--A0StP]
  53         MOV     PC, D1RtP
  54
  55         .size   ___TBIDspramSaveA,.-___TBIDspramSaveA
  56
  57 /*
  58  * void *__TBIDspramSaveB( short DspramSizes, void *pExt )
  59  */
  60         .balign 4
  61         .global ___TBIDspramSaveB
  62         .type   ___TBIDspramSaveB,function
  63 ___TBIDspramSaveB:
  64
  65         SETL    [A0StP++], D0.5, D1.5
  66         MOV     A0.3, D0Ar2
  67
  68         /* D1Ar1 - Dspram Sizes
  69          * A0.3  - Pointer to buffer
  70          */
  71
  72         /* Save the specified amount of dspram DUA */
  73 DL      MOV     D0BR.0, #0
  74         LSR     D1Ar1, D1Ar1, #_TBIECH_DSPRAM_DUB_S
  75         AND     D1Ar1, D1Ar1, #(_TBIECH_DSPRAM_DUB_BITS >> _TBIECH_DSPRAM_DUB_S)
  76         SUB     TXRPT, D1Ar1, #1
  77 $L2:
  78 DL      MOV     D0Re0, [D0BR.0++]
  79 DL      MOV     D0Ar6, [D0BR.0++]
  80 DL      MOV     D0Ar4, [D0BR.0++]
  81 DL      MOV     D0.5,  [D0BR.0++]
  82         MSETL   [A0.3++], D0Re0, D0Ar6, D0Ar4, D0.5
  83
  84         BR      $L2
  85
  86         GETL    D0.5, D1.5, [--A0StP]
  87         MOV     PC, D1RtP
  88
  89         .size   ___TBIDspramSaveB,.-___TBIDspramSaveB
  90
  91 /*
  92  * void *__TBIDspramRestoreA( short DspramSizes, void *pExt )
  93  */
  94         .balign 4
  95         .global ___TBIDspramRestoreA
  96         .type   ___TBIDspramRestoreA,function
  97 ___TBIDspramRestoreA:
  98
  99         SETL    [A0StP++], D0.5, D1.5
 100         MOV     A0.3, D0Ar2
 101
 102         /* D1Ar1 - Dspram Sizes
 103          * A0.3 - Pointer to buffer
 104          */
 105
 106         /* Restore the specified amount of dspram DUA */
 107 DL      MOV     D0AW.0, #0
 108         LSR     D1Ar1, D1Ar1, #_TBIECH_DSPRAM_DUA_S
 109         AND     D1Ar1, D1Ar1, #(_TBIECH_DSPRAM_DUA_BITS >> _TBIECH_DSPRAM_DUA_S)
 110         SUB     TXRPT, D1Ar1, #1
 111 $L3:
 112         MGETL   D0Re0, D0Ar6, D0Ar4, D0.5, [A0.3++]
 113 DL      MOV     [D0AW.0++], D0Re0
 114 DL      MOV     [D0AW.0++], D0Ar6
 115 DL      MOV     [D0AW.0++], D0Ar4
 116 DL      MOV     [D0AW.0++], D0.5
 117
 118         BR      $L3
 119
 120         GETL    D0.5, D1.5, [--A0StP]
 121         MOV     PC, D1RtP
 122
 123         .size   ___TBIDspramRestoreA,.-___TBIDspramRestoreA
 124
 125 /*
 126  * void *__TBIDspramRestoreB( short DspramSizes, void *pExt )
 127  */
 128         .balign 4
 129         .global ___TBIDspramRestoreB
 130         .type   ___TBIDspramRestoreB,function
 131 ___TBIDspramRestoreB:
 132
 133         SETL    [A0StP++], D0.5, D1.5
 134         MOV     A0.3, D0Ar2
 135
 136         /* D1Ar1 - Dspram Sizes
 137          * A0.3 - Pointer to buffer
 138          */
 139
 140         /* Restore the specified amount of dspram DUA */
 141 DL      MOV     D0BW.0, #0
 142         LSR     D1Ar1, D1Ar1, #_TBIECH_DSPRAM_DUB_S
 143         AND     D1Ar1, D1Ar1, #(_TBIECH_DSPRAM_DUB_BITS >> _TBIECH_DSPRAM_DUB_S)
 144         SUB     TXRPT, D1Ar1, #1
 145 $L4:
 146         MGETL   D0Re0, D0Ar6, D0Ar4, D0.5, [A0.3++]
 147 DL      MOV     [D0BW.0++], D0Re0
 148 DL      MOV     [D0BW.0++], D0Ar6
 149 DL      MOV     [D0BW.0++], D0Ar4
 150 DL      MOV     [D0BW.0++], D0.5
 151
 152         BR      $L4
 153
 154         GETL    D0.5, D1.5, [--A0StP]
 155         MOV     PC, D1RtP
 156
 157         .size   ___TBIDspramRestoreB,.-___TBIDspramRestoreB
 158
 159 /*
 160  * End of tbidspram.S
 161  */