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annotate packages/hal/sh/arch/current/src/hal_syscall.c @ 2863:7d8c61e6225c default tip

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* Added execute permissions to files missed in conversion from CVS
author alexs
date Thu, 26 Mar 2009 20:39:18 +0000
parents 74dbf4c3f2e1
children
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1 //=============================================================================
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2 //
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3 // hal_syscall.c
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4 //
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5 //
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6 //
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7 //=============================================================================
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8 // ####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
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12 //
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13 // eCos is free software; you can redistribute it and/or modify it under
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14 // the terms of the GNU General Public License as published by the Free
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15 // Software Foundation; either version 2 or (at your option) any later
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16 // version.
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17 //
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18 // eCos is distributed in the hope that it will be useful, but WITHOUT
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19 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21 // for more details.
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22 //
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23 // You should have received a copy of the GNU General Public License
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24 // along with eCos; if not, write to the Free Software Foundation, Inc.,
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25 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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26 //
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27 // As a special exception, if other files instantiate templates or use
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28 // macros or inline functions from this file, or you compile this file
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29 // and link it with other works to produce a work based on this file,
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30 // this file does not by itself cause the resulting work to be covered by
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31 // the GNU General Public License. However the source code for this file
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32 // must still be made available in accordance with section (3) of the GNU
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33 // General Public License v2.
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34 //
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35 // This exception does not invalidate any other reasons why a work based
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36 // on this file might be covered by the GNU General Public License.
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37 // -------------------------------------------
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38 // ####ECOSGPLCOPYRIGHTEND####
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39 //=============================================================================
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40 //#####DESCRIPTIONBEGIN####
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41 //
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42 // Author(s): msalter
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43 // Contributors:msalter, jskov, nickg
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44 // Date: 2002-02-28
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45 // Purpose:
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46 // Description:
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47 //
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48 //
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49 //
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50 //####DESCRIPTIONEND####
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51 //
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52 //=============================================================================
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53
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54 #include <pkgconf/hal.h>
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55
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56 #include <cyg/hal/hal_stub.h> // Our header
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57 #include <cyg/hal/hal_arch.h> // HAL_BREAKINST
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58 #include <cyg/hal/hal_cache.h> // HAL_xCACHE_x
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59 #include <cyg/hal/hal_intr.h> // interrupt disable/restore
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60
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61 #include <cyg/hal/hal_if.h> // ROM calling interface
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62 #include <cyg/hal/hal_misc.h> // Helper functions
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63
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64 #include <redboot.h>
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65
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66 extern int __do_syscall(int func, // syscall function number
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67 long arg1, long arg2, // up to four args.
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68 long arg3, long arg4,
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69 int *retval, // syscall return value
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70 int *sig); // signal to return (or 0)
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71
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72 #define _shnewlib_SYS_exit 1
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73 #define _shnewlib_SYS_fork 2
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74
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75 #define _shnewlib_SYS_read 3
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76 #define _shnewlib_SYS_write 4
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77 #define _shnewlib_SYS_open 5
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78 #define _shnewlib_SYS_close 6
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79 #define _shnewlib_SYS_wait4 7
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80 #define _shnewlib_SYS_creat 8
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81 #define _shnewlib_SYS_link 9
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82 #define _shnewlib_SYS_unlink 10
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83 #define _shnewlib_SYS_execv 11
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84 #define _shnewlib_SYS_chdir 12
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85 #define _shnewlib_SYS_mknod 14
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86 #define _shnewlib_SYS_chmod 15
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87 #define _shnewlib_SYS_chown 16
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88 #define _shnewlib_SYS_lseek 19
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89 #define _shnewlib_SYS_getpid 20
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90 #define _shnewlib_SYS_isatty 21
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91 #define _shnewlib_SYS_fstat 22
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92 #define _shnewlib_SYS_time 23
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93
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94 #define _shnewlib_SYS_ARG 24
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95 #define _shnewlib_SYS_stat 38
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96
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97 #define _shnewlib_SYS_pipe 42
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98 #define _shnewlib_SYS_execve 59
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99
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100 #define _shnewlib_SYS_argc 172 /* == 0xAC, for Argument Count :-) */
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101 #define _shnewlib_SYS_argnlen 173
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102 #define _shnewlib_SYS_argn 174
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103
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104 #define _shnewlib_SYS_utime 201 /* not really a system call */
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105 #define _shnewlib_SYS_wait 202 /* nor is this */
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106
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107 int
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108 hal_syscall_handler(void)
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109 {
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110 int func, arg1, arg2, arg3, arg4;
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111 int err, sig;
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112
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113 func = get_register(R4);
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114 arg1 = get_register(R5);
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115 arg2 = get_register(R6);
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116 arg3 = get_register(R7);
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117 arg4 = *(unsigned int *)(get_register(SP));
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118
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119 switch (func) {
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120 case _shnewlib_SYS_exit:
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121 func = SYS_exit;
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122 break;
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123 case _shnewlib_SYS_read:
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124 func = SYS_read;
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125 break;
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126 case _shnewlib_SYS_write:
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127 func = SYS_write;
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128 break;
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129 case _shnewlib_SYS_open:
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130 func = SYS_open;
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131 break;
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132 case _shnewlib_SYS_close:
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133 func = SYS_close;
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134 break;
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135 case _shnewlib_SYS_lseek:
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136 func = SYS_lseek;
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137 break;
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138 case _shnewlib_SYS_unlink:
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139 func = SYS_unlink;
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nickg
parents: 556
diff changeset
140 break;
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
nickg
parents: 556
diff changeset
141 case _shnewlib_SYS_getpid:
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parents: 556
diff changeset
142 func = SYS_getpid;
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
nickg
parents: 556
diff changeset
143 break;
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
nickg
parents: 556
diff changeset
144 case _shnewlib_SYS_fstat:
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
nickg
parents: 556
diff changeset
145 func = SYS_fstat;
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
nickg
parents: 556
diff changeset
146 break;
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
nickg
parents: 556
diff changeset
147 case _shnewlib_SYS_chdir:
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
nickg
parents: 556
diff changeset
148 func = SYS_chdir;
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
nickg
parents: 556
diff changeset
149 break;
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
nickg
parents: 556
diff changeset
150 case _shnewlib_SYS_stat:
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parents: 556
diff changeset
151 func = SYS_stat;
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
nickg
parents: 556
diff changeset
152 break;
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
nickg
parents: 556
diff changeset
153 case _shnewlib_SYS_chmod:
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nickg
parents: 556
diff changeset
154 func = SYS_chmod;
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
nickg
parents: 556
diff changeset
155 break;
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
nickg
parents: 556
diff changeset
156 case _shnewlib_SYS_time:
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
nickg
parents: 556
diff changeset
157 func = SYS_time;
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
nickg
parents: 556
diff changeset
158 break;
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
nickg
parents: 556
diff changeset
159 case _shnewlib_SYS_isatty:
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
nickg
parents: 556
diff changeset
160 func = SYS_isatty;
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
nickg
parents: 556
diff changeset
161 break;
208
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jlarmour
parents:
diff changeset
162 case _shnewlib_SYS_utime:
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parents:
diff changeset
163 func = SYS_utime;
1423
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
nickg
parents: 556
diff changeset
164 case _shnewlib_SYS_argc:
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
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parents: 556
diff changeset
165 put_register( R0, 0 );
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
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parents: 556
diff changeset
166 put_register( R1, 0 );
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com>
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parents: 556
diff changeset
167 return 0;
208
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jlarmour
parents:
diff changeset
168 default:
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jlarmour
parents:
diff changeset
169 return SIGTRAP;
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jlarmour
parents:
diff changeset
170 }
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jlarmour
parents:
diff changeset
171
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jlarmour
parents:
diff changeset
172 if (func == SYS_interrupt) {
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jlarmour
parents:
diff changeset
173 // A console interrupt landed us here.
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jlarmour
parents:
diff changeset
174 // Invoke the debug agent so as to cause a SIGINT.
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jlarmour
parents:
diff changeset
175 return SIGINT;
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jlarmour
parents:
diff changeset
176 }
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jlarmour
parents:
diff changeset
177
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parents:
diff changeset
178 if (__do_syscall(func, arg1, arg2, arg3, arg4, &err, &sig)) {
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jlarmour
parents:
diff changeset
179 // R0 is normally result register, but newlib's trap
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jlarmour
parents:
diff changeset
180 // code looks in R1 for the return value
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jlarmour
parents:
diff changeset
181 put_register(R1, err);
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jlarmour
parents:
diff changeset
182 return sig;
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jlarmour
parents:
diff changeset
183 }
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jlarmour
parents:
diff changeset
184
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
185 return SIGTRAP;
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jlarmour
parents:
diff changeset
186 }