1 | /* |
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2 | * sys_display.c - display the current state of a kernel structure on TXT0 |
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3 | * |
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4 | * Author Alain Greiner (2016,2017) |
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5 | * |
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6 | * Copyright (c) UPMC Sorbonne Universites |
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7 | * |
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8 | * This file is part of ALMOS-MKH. |
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9 | * |
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10 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
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11 | * under the terms of the GNU General Public License as published by |
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12 | * the Free Software Foundation; version 2.0 of the License. |
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13 | * |
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14 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
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15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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17 | * General Public License for more details. |
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18 | * |
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19 | * You should have received a copy of the GNU General Public License |
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20 | * along with ALMOS-MKH; if not, write to the Free Software Foundation, |
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21 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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22 | */ |
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23 | |
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24 | #include <hal_types.h> |
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25 | #include <hal_uspace.h> |
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26 | #include <errno.h> |
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27 | #include <vmm.h> |
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28 | #include <cluster.h> |
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29 | #include <thread.h> |
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30 | #include <process.h> |
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31 | #include <string.h> |
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32 | |
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33 | |
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34 | ///////////////////////////// |
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35 | int sys_display( reg_t type, |
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36 | reg_t arg0, |
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37 | reg_t arg1 ) |
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38 | { |
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39 | |
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40 | #if CONFIG_DEBUG_SYS_DISPLAY |
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41 | uint64_t tm_start; |
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42 | uint64_t tm_end; |
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43 | thread_t * this; |
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44 | this = CURRENT_THREAD; |
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45 | tm_start = hal_get_cycles(); |
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46 | if( CONFIG_DEBUG_SYS_DISPLAY < tm_start ) |
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47 | printk("\n[DBG] %s : thread %d enter / process %x / type %d / cycle = %d\n", |
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48 | __FUNCTION__, this, this->process->pid, type, (uint32_t)tm_start ); |
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49 | #endif |
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50 | |
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51 | if( type == DISPLAY_STRING ) |
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52 | { |
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53 | paddr_t paddr; |
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54 | char kbuf[256]; |
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55 | uint32_t length; |
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56 | |
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57 | char * string = (char *)arg0; |
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58 | |
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59 | // check string in user space |
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60 | if( vmm_v2p_translate( false , string , &paddr ) ) |
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61 | { |
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62 | printk("\n[ERROR] in %s : string buffer %x unmapped\n", |
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63 | __FUNCTION__ , string ); |
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64 | return -1; |
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65 | } |
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66 | |
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67 | // ckeck string length |
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68 | length = hal_strlen_from_uspace( string ); |
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69 | if( length >= 256 ) |
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70 | { |
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71 | printk("\n[ERROR] in %s : string length %d too large\n", |
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72 | __FUNCTION__ , length ); |
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73 | return -1; |
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74 | } |
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75 | |
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76 | // copy string in kernel space |
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77 | hal_strcpy_from_uspace( kbuf , string , 256 ); |
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78 | |
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79 | // print message on TXT0 kernel terminal |
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80 | printk("\n[USER] %s / cycle %d\n", kbuf, (uint32_t)hal_get_cycles() ); |
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81 | } |
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82 | else if( type == DISPLAY_VMM ) |
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83 | { |
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84 | pid_t pid = (pid_t)arg0; |
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85 | |
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86 | // get extended pointer on reference process |
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87 | xptr_t process_xp = cluster_get_reference_process_from_pid( pid ); |
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88 | |
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89 | if( process_xp == XPTR_NULL ) |
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90 | { |
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91 | printk("\n[ERROR] in %s : undefined PID %x\n", |
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92 | __FUNCTION__ , pid ); |
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93 | return -1; |
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94 | } |
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95 | |
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96 | // get cluster and local pointer on process |
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97 | cxy_t process_cxy = GET_CXY( process_xp ); |
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98 | process_t * process_ptr = (process_t *)GET_PTR( process_xp ); |
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99 | |
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100 | // call kernel function |
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101 | if( process_cxy == local_cxy ) |
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102 | { |
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103 | vmm_display( process_ptr , true ); |
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104 | } |
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105 | else |
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106 | { |
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107 | rpc_vmm_display_client( process_cxy , process_ptr , true ); |
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108 | } |
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109 | } |
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110 | else if( type == DISPLAY_SCHED ) |
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111 | { |
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112 | cxy_t cxy = (cxy_t)arg0; |
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113 | lid_t lid = (lid_t)arg1; |
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114 | |
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115 | // check cluster argument |
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116 | if( cluster_is_undefined( cxy ) ) |
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117 | { |
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118 | printk("\n[ERROR] in %s : undefined cluster identifier %x\n", |
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119 | __FUNCTION__ , cxy ); |
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120 | return -1; |
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121 | } |
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122 | |
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123 | // check core argument |
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124 | if( lid >= LOCAL_CLUSTER->cores_nr ) |
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125 | { |
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126 | printk("\n[ERROR] in %s : undefined local index %d\n", |
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127 | __FUNCTION__ , lid ); |
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128 | return -1; |
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129 | } |
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130 | |
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131 | if( cxy == local_cxy ) |
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132 | { |
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133 | sched_display( lid ); |
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134 | } |
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135 | else |
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136 | { |
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137 | rpc_sched_display_client( cxy , lid ); |
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138 | } |
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139 | } |
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140 | else if( type == DISPLAY_CLUSTER_PROCESSES ) |
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141 | { |
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142 | cxy_t cxy = (cxy_t)arg0; |
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143 | |
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144 | // check cluster argument |
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145 | if( cluster_is_undefined( cxy ) ) |
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146 | { |
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147 | printk("\n[ERROR] in %s : undefined cluster identifier %x\n", |
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148 | __FUNCTION__ , cxy ); |
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149 | return -1; |
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150 | } |
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151 | |
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152 | cluster_processes_display( cxy ); |
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153 | } |
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154 | else if( type == DISPLAY_TXT_PROCESSES ) |
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155 | { |
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156 | uint32_t txt_id = (uint32_t)arg0; |
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157 | |
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158 | // check argument |
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159 | if( txt_id >= LOCAL_CLUSTER->nb_txt_channels ) |
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160 | { |
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161 | printk("\n[ERROR] in %s : undefined TXT channel %x\n", |
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162 | __FUNCTION__ , txt_id ); |
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163 | return -1; |
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164 | } |
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165 | |
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166 | process_txt_display( txt_id ); |
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167 | } |
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168 | else if( type == DISPLAY_VFS ) |
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169 | { |
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170 | // call kernel function |
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171 | process_t * process = CURRENT_THREAD->process; |
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172 | vfs_display( process->vfs_root_xp ); |
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173 | } |
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174 | else if( type == DISPLAY_CHDEV ) |
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175 | { |
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176 | chdev_dir_display(); |
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177 | } |
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178 | else |
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179 | { |
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180 | printk("\n[ERROR] in %s : undefined display type %x\n", |
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181 | __FUNCTION__ , type ); |
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182 | return -1; |
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183 | } |
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184 | |
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185 | #if CONFIG_DEBUG_SYS_DISPLAY |
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186 | tm_end = hal_get_cycles(); |
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187 | if( CONFIG_DEBUG_SYS_DISPLAY < tm_end ) |
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188 | printk("\n[DBG] %s : thread %x exit / process %x / cost = %d / cycle %d\n", |
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189 | __FUNCTION__, this, this->process->pid, (uint32_t)(tm_end - tm_start) , (uint32_t)tm_end ); |
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190 | #endif |
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191 | |
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192 | return 0; |
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193 | |
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194 | } // end sys_display() |
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