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Merge from eCos master repository on 2002-05-20-20:11:54-BST
author jlarmour
date Mon, 20 May 2002 22:19:26 +0000
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children d2c90368aeef
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1 #ifndef CYGONCE_PLF_IO_H
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2 #define CYGONCE_PLF_IO_H
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3
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4 //=============================================================================
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5 //
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6 // plf_io.h
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7 //
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8 // Platform specific IO support
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9 //
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10 //=============================================================================
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11 //####ECOSGPLCOPYRIGHTBEGIN####
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12 // -------------------------------------------
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13 // This file is part of eCos, the Embedded Configurable Operating System.
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14 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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15 //
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16 // eCos is free software; you can redistribute it and/or modify it under
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17 // the terms of the GNU General Public License as published by the Free
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18 // Software Foundation; either version 2 or (at your option) any later version.
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19 //
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20 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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21 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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22 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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23 // for more details.
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24 //
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25 // You should have received a copy of the GNU General Public License along
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26 // with eCos; if not, write to the Free Software Foundation, Inc.,
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27 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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28 //
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29 // As a special exception, if other files instantiate templates or use macros
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30 // or inline functions from this file, or you compile this file and link it
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31 // with other works to produce a work based on this file, this file does not
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32 // by itself cause the resulting work to be covered by the GNU General Public
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33 // License. However the source code for this file must still be made available
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34 // in accordance with section (3) of the GNU General Public License.
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35 //
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36 // This exception does not invalidate any other reasons why a work based on
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37 // this file might be covered by the GNU General Public License.
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38 //
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39 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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40 // at http://sources.redhat.com/ecos/ecos-license
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41 // -------------------------------------------
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42 //####ECOSGPLCOPYRIGHTEND####
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43 //=============================================================================
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44 //#####DESCRIPTIONBEGIN####
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45 //
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46 // Author(s): msalter
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47 // Contributors: msalter
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48 // Date: 2001-02-12
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49 // Purpose: CalmRISC32 platform IO support
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50 // Description:
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51 // Usage: #include <cyg/hal/plf_io.h>
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52 //
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53 //####DESCRIPTIONEND####
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54 //
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55 //=============================================================================
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56
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57 #include <pkgconf/hal.h>
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58 #include <cyg/hal/hal_misc.h>
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59
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60 // coprocessor regs
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61 #define HAL_COP_SR_RBR 0x1c
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62 #define HAL_COP_SR_TBR 0x1d
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63 #define HAL_COP_TBR 0x1e
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64 #define HAL_COP_RBR 0x1f
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65
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66 #ifndef __ASSEMBLER__
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67
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68 static inline void cyg_hal_plf_write_sr_rbr(int val)
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69 {
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70 asm volatile ("cld fr28,%0\n" : : "r"(val));
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71 }
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72
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73 static inline void cyg_hal_plf_write_sr_tbr(int val)
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74 {
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75 asm volatile ("cld fr29,%0\n" : : "r"(val));
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76 }
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77
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78 static inline void cyg_hal_plf_write_tbr(int val)
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79 {
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80 asm volatile ("cld fr30,%0\n" : : "r"(val));
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81 }
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82
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83 static inline void cyg_hal_plf_write_rbr(int val)
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84 {
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85 asm volatile ("cld fr31,%0\n" : : "r"(val));
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86 }
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87
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88 static inline int cyg_hal_plf_read_sr_rbr(void)
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89 {
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90 int val;
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91
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92 asm volatile ("cld %0,fr28\n" : "=r"(val) : );
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93 return val;
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94 }
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95
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96 static inline int cyg_hal_plf_read_sr_tbr(void)
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97 {
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98 int val;
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99
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100 asm volatile ("cld %0,fr29\n" : "=r"(val) : );
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101 return val;
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102 }
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103
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104 static inline int cyg_hal_plf_read_tbr(void)
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105 {
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106 int val;
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107
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108 asm volatile ("cld %0,fr30\n" : "=r"(val) : );
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109 return val;
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110 }
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111
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112 static inline int cyg_hal_plf_read_rbr(void)
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113 {
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114 int val;
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115
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116 asm volatile ("cld %0,fr31\n" : "=r"(val) : );
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117 return val;
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118 }
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119 #endif
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120
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121 //-----------------------------------------------------------------------------
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122 // end of plf_io.h
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123 #endif // CYGONCE_PLF_IO_H