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* Added execute permissions to files missed in conversion from CVS
author alexs
date Mon, 12 Oct 2009 02:26:09 +0100
parents e0a4e3b20d73
children
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1 /*==========================================================================
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2 //
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3 // hal_misc.c
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4 //
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5 // HAL miscellaneous functions
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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 Red Hat, 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 version.
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16 //
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17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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20 // for more details.
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21 //
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22 // You should have received a copy of the GNU General Public License along
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23 // with eCos; if not, write to the Free Software Foundation, Inc.,
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24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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25 //
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26 // As a special exception, if other files instantiate templates or use macros
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27 // or inline functions from this file, or you compile this file and link it
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28 // with other works to produce a work based on this file, this file does not
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29 // by itself cause the resulting work to be covered by the GNU General Public
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30 // License. However the source code for this file must still be made available
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31 // in accordance with section (3) of the GNU General Public License.
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32 //
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33 // This exception does not invalidate any other reasons why a work based on
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34 // this file might be covered by the GNU General Public License.
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35 //
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36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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37 // at http://sources.redhat.com/ecos/ecos-license/
208
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38 // -------------------------------------------
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39 //####ECOSGPLCOPYRIGHTEND####
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40 //==========================================================================
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41 //#####DESCRIPTIONBEGIN####
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42 //
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43 // Author(s): nickg, gthomas
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44 // Contributors: nickg, gthomas, jlarmour
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45 // Date: 2001-03-21
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46 // Purpose: HAL miscellaneous functions
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47 // Description: This file contains miscellaneous functions provided by the
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48 // HAL.
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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 #include <pkgconf/hal_v85x.h>
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56 #ifdef CYGPKG_KERNEL
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57 #include <pkgconf/kernel.h>
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58 #endif
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59
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60 #include <cyg/infra/cyg_type.h>
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61 #include <cyg/infra/cyg_trac.h> // tracing macros
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62 #include <cyg/infra/cyg_ass.h> // assertion macros
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63 #include <cyg/infra/diag.h>
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64
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65 #include <cyg/hal/hal_arch.h> // HAL header
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66 #include <cyg/hal/hal_intr.h> // HAL header
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67
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68 /*------------------------------------------------------------------------*/
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69 /* First level C exception handler. */
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70
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71 externC void __handle_exception (void);
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72
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73 externC HAL_SavedRegisters *_hal_registers;
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74
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75 void
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76 exception_handler(HAL_SavedRegisters *regs)
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77 {
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78 #if defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
96
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79 // diag_printf("Exception! Frame: %x\n", regs);
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80 // show_regs(regs);
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81 static int gdb_active;
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82 if (gdb_active == 0) {
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83 gdb_active = 1;
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84 _hal_registers = regs;
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85 __handle_exception();
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86 gdb_active = 0;
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87 }
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88
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89 #elif defined(CYGPKG_KERNEL_EXCEPTIONS)
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90
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91 // We should decode the vector and pass a more appropriate
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92 // value as the second argument. For now we simply pass a
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93 // pointer to the saved registers. We should also divert
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94 // breakpoint and other debug vectors into the debug stubs.
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95
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96 cyg_hal_deliver_exception( regs->vector, (CYG_ADDRWORD)regs );
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97
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98 #else
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99
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100 CYG_FAIL("Exception!!!");
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101
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102 #endif
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103
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104 return;
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105 }
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106
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107 /*------------------------------------------------------------------------*/
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108 /* C++ support - run initial constructors */
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109
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110 #ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG
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111 cyg_bool cyg_hal_stop_constructors;
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112 #endif
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113
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114 typedef void (*pfunc) (void);
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115 extern pfunc __CTOR_LIST__[];
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116 extern pfunc __CTOR_END__[];
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117
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118 void
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119 cyg_hal_invoke_constructors (void)
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120 {
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121
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122 #ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG
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123 static pfunc *p = &__CTOR_END__[-1];
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124
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125 cyg_hal_stop_constructors = 0;
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126 for (; p >= __CTOR_LIST__; p--) {
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127 (*p) ();
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128 if (cyg_hal_stop_constructors) {
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129 p--;
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130 break;
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131 }
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132 }
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133 #else
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134 pfunc *p;
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135
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136 for (p = &__CTOR_END__[-1]; p >= __CTOR_LIST__; p--) {
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137 (*p) ();
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138 }
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139 #endif
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140 }
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141
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142 /*------------------------------------------------------------------------*/
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143 /* default ISR */
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144
101
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145 #ifdef CYGSEM_HAL_VIRTUAL_VECTOR_SUPPORT
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146 externC cyg_uint32
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147 hal_arch_default_isr(CYG_ADDRWORD vector, CYG_ADDRWORD data)
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148 {
156
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149 CYG_TRACE1(true, "Interrupt: %d", vector);
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150
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151 diag_printf("Spurious Interrupt!!! - vector: %d, data: %x\n", vector,
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152 data);
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153 CYG_FAIL("Spurious Interrupt!!!");
101
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154 return 0;
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155 }
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156 #else
96
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157 externC cyg_uint32
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158 hal_default_isr(CYG_ADDRWORD vector, CYG_ADDRWORD data)
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159 {
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160 CYG_TRACE1(true, "Interrupt: %d", vector);
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161
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162 #ifndef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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163 #ifdef CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT
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164 #ifdef CYGDBG_HAL_CTRLC_ISR
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165 // then see if it is an incoming character interrupt and break
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166 // into the stub ROM if the char is a ^C.
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167 if ( CYGDBG_HAL_CTRLC_ISR( vector, data ) )
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168 return 1; // interrupt handled
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169 #endif
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170 #endif
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171 #endif
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172
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173 diag_printf("Spurious Interrupt!!! - vector: %d, data: %x\n", vector,
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174 data);
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175 CYG_FAIL("Spurious Interrupt!!!");
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176 return 0;
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177 }
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178 #endif
96
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179
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180 /*------------------------------------------------------------------------*/
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181 /* Idle thread action */
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182
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183 void
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184 hal_idle_thread_action( cyg_uint32 count )
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185 {
156
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186 // power saving instruction
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187 asm("halt");
96
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188 }
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189
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190 /*-------------------------------------------------------------------------*/
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191 /* Misc functions */
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192
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193 cyg_uint32
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194 hal_lsbit_index(cyg_uint32 mask)
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195 {
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196 int i;
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197 for (i = 0; i < 32; i++) {
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198 if (mask & (1<<i)) return ((cyg_uint32)i);
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199 }
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200 return ((cyg_uint32)-1);
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201 }
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202
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203 cyg_uint32
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204 hal_msbit_index(cyg_uint32 mask)
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205 {
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206 int i;
197
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207 for (i = 31; i >= 0; i--) {
96
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208 if (mask & (1<<i)) return ((cyg_uint32)i);
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209 }
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210 return ((cyg_uint32)-1);
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211 }
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212
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213 void
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214 show_regs(HAL_SavedRegisters *regs)
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215 {
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216 int i;
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217 diag_printf("Regs\n");
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218 for (i = 0; i < 32; i++) {
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219 if ((i % 8) == 0) {
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220 diag_printf("R%2d: ", i);
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221 }
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222 diag_printf("0x%08x ", regs->d[i]);
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223 if ((i % 8) == 7) {
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224 diag_printf("\n");
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225 }
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226 }
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227 diag_printf("PC = %x, PSW = %x\n", regs->pc, regs->psw);
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228 }
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229
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230 /*------------------------------------------------------------------------*/
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231 // EOF hal_misc.c