Mercurial > ecos

annotate packages/kernel/current/src/instrmnt/meminst.cxx @ 3292:7f8e529b4d82 default tip

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Fix FREESCALE_EDMA_NBYTES_MLOFFYES_MLOFF() so it works with negative offsets.
author vae
date Wed, 29 Apr 2015 23:31:48 +0000
parents 74dbf4c3f2e1
children
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1 //==========================================================================
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2 //
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3 // instrmnt/meminst.cxx
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4 //
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5 // Memory buffer instrumentation 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 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): nickg
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43 // Contributors: nickg, andrew.lunn@ascom.ch
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44 // Date: 1997-10-27
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45 // Purpose: Instrumentation functions
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46 // Description: The functions in this file are implementations of the
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47 // standard instrumentation functions that place records
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48 // into a memory buffer.
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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/kernel.h>
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55
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56 #include <cyg/kernel/ktypes.h> // base kernel types
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57 #include <cyg/infra/cyg_trac.h> // tracing macros
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58 #include <cyg/infra/cyg_ass.h> // assertion macros
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59 #include <cyg/kernel/instrmnt.h> // instrumentation
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60
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61 #include <cyg/kernel/intr.hxx> // interrupt control
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62 #include <cyg/kernel/sched.hxx> // scheduler defines
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63
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64 #include <cyg/kernel/sched.inl> // scheduler inlines
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65 #include <cyg/kernel/clock.inl> // clock inlines
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66
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67 #ifdef CYGPKG_KERNEL_INSTRUMENT
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68
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69 // -------------------------------------------------------------------------
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70 // Instrumentation record.
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71
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72 struct Instrument_Record
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73 {
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74 CYG_WORD16 type; // record type
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75 CYG_WORD16 thread; // current thread id
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76 CYG_WORD timestamp; // 32 bit timestamp
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77 CYG_WORD arg1; // first arg
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78 CYG_WORD arg2; // second arg
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79 };
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80
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81 // -------------------------------------------------------------------------
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82 // Buffer base and end. This buffer must be a whole number of
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83
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84 #ifdef CYGVAR_KERNEL_INSTRUMENT_EXTERNAL_BUFFER
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85
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86 externC Instrument_Record instrument_buffer[];
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87 externC cyg_uint32 instrument_buffer_size;
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88
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89 #else
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90
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91 extern "C"
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92 {
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93
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94 Instrument_Record instrument_buffer[CYGNUM_KERNEL_INSTRUMENT_BUFFER_SIZE];
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95
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96 cyg_uint32 instrument_buffer_size = CYGNUM_KERNEL_INSTRUMENT_BUFFER_SIZE;
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97
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98 };
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99
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100 #endif
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101
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102 extern "C"
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103 {
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104
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105 #define instrument_buffer_start instrument_buffer[0]
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106 #define instrument_buffer_end instrument_buffer[instrument_buffer_size]
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107
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108 extern "C"
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109 {
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110 Instrument_Record *instrument_buffer_pointer = &instrument_buffer_start;
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111 };
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112
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113 #ifdef CYGDBG_KERNEL_INSTRUMENT_FLAGS
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114
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115 // This array contains a 32 bit word for each event class. The
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116 // bits in the word correspond to events. By setting or clearing
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117 // the appropriate bit, the selected instrumentation event may
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118 // be enabled or disabled dynamically.
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119
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120 cyg_uint32 instrument_flags[(CYG_INSTRUMENT_CLASS_MAX>>8)+1];
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121
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122 #endif
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123
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124 };
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125
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126 // -------------------------------------------------------------------------
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127
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128 #ifdef CYGPKG_KERNEL_SMP_SUPPORT
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129
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130 HAL_SPINLOCK_TYPE instrument_lock = HAL_SPINLOCK_INIT_CLEAR;
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131
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132 #else
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133
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134 #define HAL_SPINLOCK_SPIN( __lock )
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135
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136 #define HAL_SPINLOCK_CLEAR( __lock )
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137
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138 #endif
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139
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140 // -------------------------------------------------------------------------
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141
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142 void cyg_instrument( cyg_uint32 type, CYG_ADDRWORD arg1, CYG_ADDRWORD arg2 )
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143 {
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144
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145 cyg_uint32 old_ints;
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146
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147 #ifdef CYGDBG_KERNEL_INSTRUMENT_FLAGS
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148
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149 cyg_ucount8 cl = (type>>8)&0xff;
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150 cyg_ucount8 event = type&0xff;
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151
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152 if( instrument_flags[cl] & (1<<event) )
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153 #endif
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154 {
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155 HAL_DISABLE_INTERRUPTS(old_ints);
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156 HAL_SPINLOCK_SPIN( instrument_lock );
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157
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158 Instrument_Record *p = instrument_buffer_pointer;
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159 Cyg_Thread *t = Cyg_Scheduler::get_current_thread();
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160 p->type = type;
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161 p->thread = (t==0)?0x0FFF:t->get_unique_id();
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162 #ifdef CYGPKG_KERNEL_SMP_SUPPORT
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163 // Add CPU id to in top 4 bytes of thread id
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164 p->thread = (p->thread&0x0FFF)|(CYG_KERNEL_CPU_THIS()<<12);
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165 #endif
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166 #ifdef CYGVAR_KERNEL_COUNTERS_CLOCK
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167 // p->timestamp = Cyg_Clock::real_time_clock->current_value_lo();
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168 HAL_CLOCK_READ( &p->timestamp );
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169 #else
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170 p->timestamp = 0;
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171 #endif
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172 p->arg1 = arg1;
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173 p->arg2 = arg2;
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174
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175 p++;
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176 #ifdef CYGDBG_KERNEL_INSTRUMENT_BUFFER_WRAP
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177 if( p == &instrument_buffer_end )
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178 instrument_buffer_pointer = &instrument_buffer_start;
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179 else instrument_buffer_pointer = p;
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180 #else
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181 // when not wrapping, just continue to put further entries
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182 // in the last slot.
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183 if( p != &instrument_buffer_end )
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184 instrument_buffer_pointer = p;
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185 #endif
177
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186 HAL_SPINLOCK_CLEAR( instrument_lock );
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187 HAL_RESTORE_INTERRUPTS(old_ints);
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188 }
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189
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190 return;
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191 }
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192
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193 // -------------------------------------------------------------------------
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194 // Functions to enable and disable selected instrumentation events
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195 // when the flags are enabled.
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196
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197 #ifdef CYGDBG_KERNEL_INSTRUMENT_FLAGS
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198
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199 externC void cyg_instrument_enable( cyg_uint32 cl, cyg_uint32 event)
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200 {
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201 if( 0 != event )
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202 instrument_flags[cl>>8] |= 1<<event;
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203 else
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204 instrument_flags[cl>>8] = ~0;
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205 }
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206
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207 externC void cyg_instrument_disable( cyg_uint32 cl, cyg_uint32 event)
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208 {
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209 if( 0 != event )
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210 instrument_flags[cl>>8] &= ~(1<<event);
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211 else
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212 instrument_flags[cl>>8] = 0;
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213
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214 }
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215
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216 externC cyg_bool cyg_instrument_state( cyg_uint32 cl, cyg_uint32 event)
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217 {
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218 return (instrument_flags[cl>>8] & (1<<event)) != 0;
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219 }
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220
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221 #endif
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222
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223 // -------------------------------------------------------------------------
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224
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225 #ifdef CYGDBG_KERNEL_INSTRUMENT_MSGS
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226 #define CYGDBG_KERNEL_INSTRUMENT_MSGS_DEFINE_TABLE
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227 #include <cyg/kernel/instrument_desc.h>
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228
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229 externC char * cyg_instrument_msg(CYG_WORD16 type) {
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230
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231 struct instrument_desc_s *record;
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232 struct instrument_desc_s *end_record;
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233 CYG_WORD cl, event;
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234
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235 record = instrument_desc;
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236 end_record = &instrument_desc[CYG_NELEM(instrument_desc)-1];
182
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237 cl = type & 0xff00;
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238 event = type & 0x00ff;
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239
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240 while ((record != end_record) && (record->num != cl)) {
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241 record++;
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242 }
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243
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244 if (record->num == cl) {
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245 record++;
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246 while ((record != end_record) && (record->num != event) &&
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247 (record->num < 0xff)) {
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248 record++;
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249 }
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250
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251 if (record->num == event) {
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252 return (record->msg);
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253 }
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254 }
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255 return("Unknown event");
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256 }
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257 #endif // CYGDBG_KERNEL_INSTRUMENT_MSGS
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258 #endif // CYGPKG_KERNEL_INSTRUMENT
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259
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260 // EOF instrmnt/meminst.cxx