[690] | 1 | /* |
---|
| 2 | * sys_get.c - Kernel function implementing all non_standard "get_xxx()" syscalls. |
---|
| 3 | * |
---|
| 4 | * Author Alain Greiner (2016,2017,2018,2019,2020) |
---|
| 5 | * |
---|
| 6 | * Copyright (c) UPMC Sorbonne Universites |
---|
| 7 | * |
---|
| 8 | * This file is part of ALMOS-MKH. |
---|
| 9 | * |
---|
| 10 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
---|
| 11 | * under the terms of the GNU General Public License as published by |
---|
| 12 | * the Free Software Foundation; version 2.0 of the License. |
---|
| 13 | * |
---|
| 14 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
---|
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
---|
| 17 | * General Public License for more details. |
---|
| 18 | * |
---|
| 19 | * You should have received a copy of the GNU General Public License |
---|
| 20 | * along with ALMOS-MKH; if not, write to the Free Software Foundation, |
---|
| 21 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
---|
| 22 | */ |
---|
| 23 | |
---|
| 24 | #include <hal_kernel_types.h> |
---|
| 25 | #include <hal_uspace.h> |
---|
| 26 | #include <hal_vmm.h> |
---|
| 27 | #include <hal_special.h> |
---|
| 28 | #include <errno.h> |
---|
| 29 | #include <core.h> |
---|
| 30 | #include <thread.h> |
---|
| 31 | #include <process.h> |
---|
| 32 | #include <vmm.h> |
---|
| 33 | #include <printk.h> |
---|
| 34 | |
---|
| 35 | #include <syscalls.h> |
---|
| 36 | |
---|
| 37 | ///////////////////////////////////////////////////////////////////////////////// |
---|
| 38 | // This function returns a printable string for the sys_get command type. |
---|
| 39 | ///////////////////////////////////////////////////////////////////////////////// |
---|
| 40 | |
---|
| 41 | #if DEBUG_SYS_GET |
---|
| 42 | static char* get_cmd_type_str( uint32_t type ) |
---|
| 43 | { |
---|
| 44 | if ( type == GET_PROCESSES ) return "PROCESSES"; |
---|
| 45 | else if( type == GET_CONFIG ) return "CONFIG"; |
---|
| 46 | else if( type == GET_CORE_ID ) return "CORE_ID"; |
---|
| 47 | else if( type == GET_NB_CORES ) return "NB_CORES"; |
---|
| 48 | else if( type == GET_BEST_CORE ) return "BEST_CORE"; |
---|
| 49 | else if( type == GET_CYCLE ) return "CYCLE"; |
---|
| 50 | else if( type == GET_THREAD_INFO ) return "THREAD_INFO"; |
---|
| 51 | else return "undefined"; |
---|
| 52 | } |
---|
| 53 | #endif |
---|
| 54 | |
---|
| 55 | ////////////////////////// |
---|
| 56 | int sys_get ( reg_t arg0, |
---|
| 57 | reg_t arg1, |
---|
| 58 | reg_t arg2, |
---|
| 59 | reg_t arg3 ) |
---|
| 60 | { |
---|
| 61 | vseg_t * vseg; |
---|
| 62 | int ret; |
---|
| 63 | |
---|
| 64 | thread_t * this = CURRENT_THREAD; |
---|
| 65 | process_t * process = this->process; |
---|
| 66 | |
---|
| 67 | uint32_t type = arg0; |
---|
| 68 | |
---|
| 69 | #if DEBUG_SYS_GET || DEBUG_SYSCALLS_ERROR || CONFIG_INSTRUMENTATION_SYSCALLS |
---|
| 70 | uint64_t tm_start = hal_get_cycles(); |
---|
| 71 | #endif |
---|
| 72 | |
---|
| 73 | #if DEBUG_SYS_GET |
---|
| 74 | if( DEBUG_SYS_GET < (uint32_t)tm_start ) |
---|
| 75 | printk("\n[%s] thread[%x,%x] enter / %s / a1 %x / a2 %x / a3 %x / cycle %d\n", |
---|
| 76 | __FUNCTION__, process->pid, this->trdid, get_cmd_type_str( type ), |
---|
| 77 | arg1, arg2, arg3, (uint32_t)tm_start ); |
---|
| 78 | #endif |
---|
| 79 | |
---|
| 80 | switch( type ) |
---|
| 81 | { |
---|
| 82 | /////////////// |
---|
| 83 | case GET_CYCLE: |
---|
| 84 | { |
---|
| 85 | char * u_buf = (char *)(intptr_t)arg1; |
---|
| 86 | |
---|
| 87 | // check buffer in user space |
---|
| 88 | if( vmm_get_vseg( process , (intptr_t)arg1 , &vseg ) ) |
---|
| 89 | { |
---|
| 90 | |
---|
| 91 | #if DEBUG_SYSCALLS_ERROR |
---|
| 92 | if( DEBUG_SYSCALLS_ERROR < (uint32_t)tm_start ) |
---|
| 93 | printk("\n[ERROR] in %s for CYCLE : thread[%x,%x] / user buffer unmapped %x\n", |
---|
| 94 | __FUNCTION__ , process->pid , this->trdid , (intptr_t)arg1 ); |
---|
| 95 | #endif |
---|
| 96 | this->errno = EINVAL; |
---|
| 97 | ret = -1; |
---|
| 98 | break; |
---|
| 99 | } |
---|
| 100 | |
---|
| 101 | // call relevant core function |
---|
| 102 | uint64_t k_cycle = hal_get_cycles(); |
---|
| 103 | |
---|
| 104 | // copy to user space |
---|
| 105 | hal_copy_to_uspace( u_buf, |
---|
| 106 | XPTR( local_cxy , &k_cycle ), |
---|
| 107 | sizeof(uint64_t) ); |
---|
| 108 | ret = 0; |
---|
| 109 | break; |
---|
| 110 | } |
---|
| 111 | /////////////////// |
---|
| 112 | case GET_PROCESSES: |
---|
| 113 | { |
---|
| 114 | uint32_t cxy = ((uint32_t)arg1 >> 16); |
---|
| 115 | uint32_t owned = ((uint32_t)arg1 & 0xFFFF); |
---|
| 116 | char * u_buf = (char *)(intptr_t)arg2; |
---|
| 117 | uint32_t size = (uint32_t)arg3; |
---|
| 118 | |
---|
| 119 | char k_buf[CONFIG_PROCESS_DISPLAY_BUF_SIZE]; // kernel buffer (one line) |
---|
| 120 | |
---|
| 121 | uint32_t length; // number of bytes copied in k_buf (without NUL) |
---|
| 122 | uint32_t offset = 0; // number of bytes already copied to u_buf |
---|
| 123 | xptr_t iter_xp; |
---|
| 124 | |
---|
| 125 | // check buffer in user space |
---|
| 126 | if( vmm_get_vseg( process , (intptr_t)u_buf , &vseg ) ) |
---|
| 127 | { |
---|
| 128 | |
---|
| 129 | #if DEBUG_SYSCALLS_ERROR |
---|
| 130 | if( DEBUG_SYSCALLS_ERROR < (uint32_t)tm_start ) |
---|
| 131 | printk("\n[ERROR] in %s for PROCESSES : thread[%x,%x] / user buffer unmapped %x\n", |
---|
| 132 | __FUNCTION__ , process->pid , this->trdid , (intptr_t)arg2 ); |
---|
| 133 | #endif |
---|
| 134 | this->errno = EINVAL; |
---|
| 135 | ret = -1; |
---|
| 136 | break; |
---|
| 137 | } |
---|
| 138 | |
---|
| 139 | #if DEBUG_SYS_GET |
---|
| 140 | if( DEBUG_SYS_GET < (uint32_t)tm_start ) |
---|
| 141 | printk("\n[%s] for PROCESSES : thread[%x,%x] cxy %x / owned %d\n", |
---|
| 142 | __FUNCTION__, process->pid, this->trdid, cxy, owned ); |
---|
| 143 | #endif |
---|
| 144 | |
---|
| 145 | // build extended pointers on root and lock of process list in cluster cxy |
---|
| 146 | xptr_t root_xp = XPTR( cxy , &LOCAL_CLUSTER->pmgr.local_root ); |
---|
| 147 | xptr_t lock_xp = XPTR( cxy , &LOCAL_CLUSTER->pmgr.local_lock ); |
---|
| 148 | |
---|
| 149 | // take lock on process list |
---|
| 150 | remote_queuelock_acquire( lock_xp ); |
---|
| 151 | |
---|
| 152 | // loop on all processes in cluster cxy |
---|
| 153 | XLIST_FOREACH( root_xp , iter_xp ) |
---|
| 154 | { |
---|
| 155 | // get process pointers |
---|
| 156 | xptr_t process_xp = XLIST_ELEMENT( iter_xp , process_t , local_list ); |
---|
| 157 | process_t * process_ptr = GET_PTR( process_xp ); |
---|
| 158 | cxy_t process_cxy = GET_CXY( process_xp ); |
---|
| 159 | |
---|
| 160 | // get process PID |
---|
| 161 | pid_t pid = hal_remote_l32( XPTR( process_cxy , &process_ptr->pid ) ); |
---|
| 162 | |
---|
| 163 | #if DEBUG_SYS_GET |
---|
| 164 | if( DEBUG_SYS_GET < (uint32_t)tm_start ) |
---|
| 165 | printk("\n[%s] for PROCESSES : thread[%x,%x] in FOREACH / pid %x\n", |
---|
| 166 | __FUNCTION__, process->pid, this->trdid, pid ); |
---|
| 167 | #endif |
---|
| 168 | |
---|
| 169 | // when owned is set, display only owned user processes |
---|
| 170 | if( (owned == 0) || |
---|
| 171 | ((CXY_FROM_PID( pid ) == cxy) && (LPID_FROM_PID( pid ) != 0)) ) |
---|
| 172 | { |
---|
| 173 | // build string for one line (one process descriptor) |
---|
| 174 | length = process_build_string( process_xp, |
---|
| 175 | k_buf, |
---|
| 176 | CONFIG_PROCESS_DISPLAY_BUF_SIZE ); |
---|
| 177 | |
---|
| 178 | // copy this string to u_buf (with the '\n' , but without the NUL) |
---|
| 179 | hal_copy_to_uspace( u_buf + offset, |
---|
| 180 | XPTR( local_cxy , k_buf ), |
---|
| 181 | length ); |
---|
| 182 | // update offset |
---|
| 183 | offset += length; |
---|
| 184 | } |
---|
| 185 | |
---|
| 186 | // check user buffer overflow |
---|
| 187 | if( (offset + CONFIG_PROCESS_DISPLAY_BUF_SIZE) >= size ) |
---|
| 188 | { |
---|
| 189 | // build a warning message |
---|
| 190 | length = snprintk( k_buf , CONFIG_PROCESS_DISPLAY_BUF_SIZE , |
---|
| 191 | " ... user buffer too for all process in cluster %x", cxy ); |
---|
| 192 | |
---|
| 193 | // copy this string to u_buf |
---|
| 194 | hal_copy_to_uspace( u_buf + offset, |
---|
| 195 | XPTR( local_cxy , k_buf ), |
---|
| 196 | length ); |
---|
| 197 | // exit FOREACH loop |
---|
| 198 | break; |
---|
| 199 | } |
---|
| 200 | else // add the NUL character in u_buf |
---|
| 201 | { |
---|
| 202 | char byte = 0; |
---|
| 203 | |
---|
| 204 | // copy this NUL character to u_buf |
---|
| 205 | hal_copy_to_uspace( u_buf + offset, |
---|
| 206 | XPTR( local_cxy , &byte ), |
---|
| 207 | 1 ); |
---|
| 208 | } |
---|
| 209 | } // end FOREACH |
---|
| 210 | |
---|
| 211 | // release lock on process list |
---|
| 212 | remote_queuelock_release( lock_xp ); |
---|
| 213 | |
---|
| 214 | ret = 0; |
---|
| 215 | break; |
---|
| 216 | } |
---|
| 217 | //////////////// |
---|
| 218 | case GET_CONFIG: |
---|
| 219 | { |
---|
| 220 | hard_config_t * u_config = (hard_config_t *)arg1; |
---|
| 221 | |
---|
| 222 | hard_config_t k_config; // local kernel structure |
---|
| 223 | |
---|
| 224 | // check u_config mapped in user space |
---|
| 225 | if( vmm_get_vseg( process , (intptr_t)u_config , &vseg ) ) |
---|
| 226 | { |
---|
| 227 | |
---|
| 228 | #if DEBUG_SYSCALLS_ERROR |
---|
| 229 | if( DEBUG_SYSCALLS_ERROR < (uint32_t)tm_start ) |
---|
| 230 | printk("\n[ERROR] in %s for CONFIG : thread[%x,%x] / user pointer %x unmapped\n", |
---|
| 231 | __FUNCTION__ , process->pid , this->trdid , (intptr_t)u_config ); |
---|
| 232 | #endif |
---|
| 233 | this->errno = EINVAL; |
---|
| 234 | ret = -1; |
---|
| 235 | break; |
---|
| 236 | } |
---|
| 237 | |
---|
| 238 | // copy config parameters from cluster descriptor to kernel structure |
---|
| 239 | k_config.x_size = LOCAL_CLUSTER->x_size; |
---|
| 240 | k_config.y_size = LOCAL_CLUSTER->y_size; |
---|
| 241 | k_config.ncores = LOCAL_CLUSTER->cores_nr; |
---|
| 242 | k_config.txt_channels = LOCAL_CLUSTER->nb_txt_channels; |
---|
| 243 | k_config.nic_channels = LOCAL_CLUSTER->nb_nic_channels; |
---|
| 244 | k_config.ioc_channels = LOCAL_CLUSTER->nb_ioc_channels; |
---|
| 245 | k_config.fbf_channels = LOCAL_CLUSTER->nb_fbf_channels; |
---|
| 246 | |
---|
| 247 | // copy k_config structure to user space |
---|
| 248 | hal_copy_to_uspace( u_config , |
---|
| 249 | XPTR(local_cxy, &k_config ), |
---|
| 250 | sizeof(hard_config_t) ); |
---|
| 251 | ret = 0; |
---|
| 252 | break; |
---|
| 253 | } |
---|
| 254 | ///////////////// |
---|
| 255 | case GET_CORE_ID: |
---|
| 256 | { |
---|
| 257 | uint32_t * u_cxy = (uint32_t *)arg1; |
---|
| 258 | uint32_t * u_lid = (uint32_t *)arg2; |
---|
| 259 | |
---|
| 260 | // check cxy buffer in user space |
---|
| 261 | if( vmm_get_vseg( process , (intptr_t)u_cxy , &vseg ) ) |
---|
| 262 | { |
---|
| 263 | |
---|
| 264 | #if DEBUG_SYSCALLS_ERROR |
---|
| 265 | if( DEBUG_SYSCALLS_ERROR < (uint32_t)tm_start ) |
---|
| 266 | printk("\n[ERROR] in %s for CORE_ID : thread[%x,%x] / cxy buffer unmapped %x\n", |
---|
| 267 | __FUNCTION__ , process->pid , this->trdid , (intptr_t)u_cxy ); |
---|
| 268 | #endif |
---|
| 269 | this->errno = EINVAL; |
---|
| 270 | ret = -1; |
---|
| 271 | break; |
---|
| 272 | } |
---|
| 273 | |
---|
| 274 | // check lid buffer in user space |
---|
| 275 | if( vmm_get_vseg( process , (intptr_t)u_lid , &vseg ) ) |
---|
| 276 | { |
---|
| 277 | |
---|
| 278 | #if DEBUG_SYSCALLS_ERROR |
---|
| 279 | if( DEBUG_SYSCALLS_ERROR < (uint32_t)tm_start ) |
---|
| 280 | printk("\n[ERROR] in %s for CORE_ID : thread[%x,%x] / lid buffer unmapped %x\n", |
---|
| 281 | __FUNCTION__ , process->pid , this->trdid , (intptr_t)u_lid ); |
---|
| 282 | #endif |
---|
| 283 | this->errno = EINVAL; |
---|
| 284 | ret = -1; |
---|
| 285 | break; |
---|
| 286 | } |
---|
| 287 | |
---|
| 288 | // get lid from core decriptor |
---|
| 289 | lid_t lid = this->core->lid; |
---|
| 290 | |
---|
| 291 | // copy cxy to user space |
---|
| 292 | hal_copy_to_uspace( u_cxy, |
---|
| 293 | XPTR( local_cxy , &local_cxy ), |
---|
| 294 | sizeof(uint32_t) ); |
---|
| 295 | |
---|
| 296 | hal_copy_to_uspace( u_lid, |
---|
| 297 | XPTR( local_cxy , &lid ), |
---|
| 298 | sizeof(uint32_t) ); |
---|
| 299 | ret = 0; |
---|
| 300 | break; |
---|
| 301 | } |
---|
| 302 | ////////////////// |
---|
| 303 | case GET_NB_CORES: |
---|
| 304 | { |
---|
| 305 | uint32_t cores; |
---|
| 306 | cxy_t cxy = arg1; |
---|
| 307 | uint32_t * u_cores = (uint32_t *)arg2; |
---|
| 308 | |
---|
| 309 | // check ncores buffer in user space |
---|
| 310 | if( vmm_get_vseg( process , (intptr_t)u_cores , &vseg ) ) |
---|
| 311 | { |
---|
| 312 | |
---|
| 313 | #if DEBUG_SYSCALLS_ERROR |
---|
| 314 | if( DEBUG_SYSCALLS_ERROR < (uint32_t)tm_start ) |
---|
| 315 | printk("\n[ERROR] in %s for NB_CORES : thread[%x,%x] / user buffer unmapped %x\n", |
---|
| 316 | __FUNCTION__ , process->pid , this->trdid , (intptr_t)u_cores ); |
---|
| 317 | #endif |
---|
| 318 | this->errno = EFAULT; |
---|
| 319 | ret = -1; |
---|
| 320 | break; |
---|
| 321 | } |
---|
| 322 | |
---|
| 323 | // get number of cores in cluster |
---|
| 324 | if( cluster_is_active( cxy ) ) |
---|
| 325 | { |
---|
| 326 | cores = hal_remote_l32( XPTR( cxy , &LOCAL_CLUSTER->cores_nr ) ); |
---|
| 327 | } |
---|
| 328 | else // target cluster undefined |
---|
| 329 | { |
---|
| 330 | cores = 0; |
---|
| 331 | } |
---|
| 332 | |
---|
| 333 | // copy to user space |
---|
| 334 | hal_copy_to_uspace( u_cores, |
---|
| 335 | XPTR( local_cxy , &cores ), |
---|
| 336 | sizeof(uint32_t) ); |
---|
| 337 | ret = 0; |
---|
| 338 | break; |
---|
| 339 | } |
---|
| 340 | /////////////////// |
---|
| 341 | case GET_BEST_CORE: |
---|
| 342 | { |
---|
| 343 | uint32_t base_cxy = ((uint32_t)arg1 >> 16); |
---|
| 344 | uint32_t level = ((uint32_t)arg1 & 0xFFFF); |
---|
| 345 | uint32_t * cxy = (uint32_t *)(intptr_t)arg2; |
---|
| 346 | uint32_t * lid = (uint32_t *)(intptr_t)arg3; |
---|
| 347 | |
---|
| 348 | uint32_t k_cxy; |
---|
| 349 | uint32_t k_lid; |
---|
| 350 | |
---|
| 351 | // check <cxy> buffer in user space |
---|
| 352 | if( vmm_get_vseg( process , (intptr_t)cxy , &vseg ) ) |
---|
| 353 | { |
---|
| 354 | |
---|
| 355 | #if DEBUG_SYSCALLS_ERROR |
---|
| 356 | if( DEBUG_SYSCALLS_ERROR < (uint32_t)tm_start ) |
---|
| 357 | printk("\n[ERROR] in %s for BEST_CORE : thread[%x,%x] / user buffer cxy unmapped %x\n", |
---|
| 358 | __FUNCTION__ , process->pid , this->trdid , cxy ); |
---|
| 359 | #endif |
---|
| 360 | this->errno = EINVAL; |
---|
| 361 | ret = -1; |
---|
| 362 | break; |
---|
| 363 | } |
---|
| 364 | |
---|
| 365 | // check <lid> buffer in user space |
---|
| 366 | if( vmm_get_vseg( process , (intptr_t)lid , &vseg ) ) |
---|
| 367 | { |
---|
| 368 | |
---|
| 369 | #if DEBUG_SYSCALLS_ERROR |
---|
| 370 | if( DEBUG_SYSCALLS_ERROR < (uint32_t)tm_start ) |
---|
| 371 | printk("\n[ERROR] in %s for BEST_CORE : thread[%x,%x] / user buffer lid unmapped %x\n", |
---|
| 372 | __FUNCTION__ , process->pid , this->trdid , lid ); |
---|
| 373 | #endif |
---|
| 374 | this->errno = EINVAL; |
---|
| 375 | ret = -1; |
---|
| 376 | break; |
---|
| 377 | } |
---|
| 378 | |
---|
| 379 | // check level argument |
---|
| 380 | if( level > 5 ) |
---|
| 381 | { |
---|
| 382 | |
---|
| 383 | #if DEBUG_SYSCALLS_ERROR |
---|
| 384 | if( DEBUG_SYSCALLS_ERROR < (uint32_t)tm_start ) |
---|
| 385 | printk("\n[ERROR] in %s for BEST_CORE : thread[%x,%x] / level argument %d too large\n", |
---|
| 386 | __FUNCTION__ , process->pid , this->trdid , level ); |
---|
| 387 | #endif |
---|
| 388 | this->errno = EINVAL; |
---|
| 389 | ret = -1; |
---|
| 390 | break; |
---|
| 391 | } |
---|
| 392 | |
---|
| 393 | // get extended pointer on the macro-cluster DQDT root node |
---|
| 394 | xptr_t root_xp = dqdt_get_root( base_cxy , level ); |
---|
| 395 | |
---|
| 396 | if( root_xp == XPTR_NULL ) // macro-cluster undefined |
---|
| 397 | { |
---|
| 398 | |
---|
| 399 | #if DEBUG_SYSCALLS_ERROR |
---|
| 400 | if( DEBUG_SYSCALLS_ERROR < (uint32_t)tm_start ) |
---|
| 401 | printk("\n[ERROR] in %s for BEST_CORE ; thread[%x,%x] DQDT undefined\n", |
---|
| 402 | __FUNCTION__, process->pid, this->trdid ); |
---|
| 403 | #endif |
---|
| 404 | this->errno = EINVAL; |
---|
| 405 | ret = -1; |
---|
| 406 | break; |
---|
| 407 | } |
---|
| 408 | |
---|
| 409 | // get best core in best cluster |
---|
| 410 | k_cxy = (uint32_t)dqdt_get_cluster_for_thread( root_xp ); |
---|
| 411 | k_lid = (uint32_t)cluster_select_local_core( k_cxy ); |
---|
| 412 | |
---|
| 413 | // copy to user space |
---|
| 414 | hal_copy_to_uspace( cxy, |
---|
| 415 | XPTR( local_cxy , &k_cxy ), |
---|
| 416 | sizeof(uint32_t) ); |
---|
| 417 | |
---|
| 418 | hal_copy_to_uspace( lid, |
---|
| 419 | XPTR( local_cxy , &k_lid ), |
---|
| 420 | sizeof(uint32_t) ); |
---|
| 421 | ret = 0; |
---|
| 422 | break; |
---|
| 423 | } |
---|
| 424 | ///////////////////// |
---|
| 425 | case GET_THREAD_INFO: |
---|
| 426 | { |
---|
| 427 | thread_info_t * u_info = (thread_info_t *)arg1; |
---|
| 428 | |
---|
| 429 | // check buffer in user space |
---|
| 430 | if( vmm_get_vseg( process , (intptr_t)u_info , &vseg ) ) |
---|
| 431 | { |
---|
| 432 | |
---|
| 433 | #if DEBUG_SYSCALLS_ERROR |
---|
| 434 | if( DEBUG_SYSCALLS_ERROR < (uint32_t)tm_start ) |
---|
| 435 | printk("\n[ERROR] in %s for THREAD_INFO : thread[%x,%x] / user buffer unmapped %x\n", |
---|
| 436 | __FUNCTION__ , process->pid , this->trdid , (intptr_t)u_info ); |
---|
| 437 | #endif |
---|
| 438 | this->errno = EINVAL; |
---|
| 439 | ret = -1; |
---|
| 440 | break; |
---|
| 441 | } |
---|
| 442 | |
---|
| 443 | // copy this thread_info_t structure to user space |
---|
| 444 | hal_copy_to_uspace( u_info, |
---|
| 445 | XPTR( local_cxy , &this->info), |
---|
| 446 | sizeof(thread_info_t) ); |
---|
| 447 | ret = 0; |
---|
| 448 | break; |
---|
| 449 | } |
---|
| 450 | default: |
---|
| 451 | { |
---|
| 452 | ret = -1; |
---|
| 453 | } |
---|
| 454 | } // end switch cmd |
---|
| 455 | |
---|
| 456 | hal_fence(); |
---|
| 457 | |
---|
| 458 | #if (DEBUG_SYS_GET || CONFIG_INSTRUMENTATION_SYSCALLS) |
---|
| 459 | uint64_t tm_end = hal_get_cycles(); |
---|
| 460 | #endif |
---|
| 461 | |
---|
| 462 | #if DEBUG_SYS_GET |
---|
| 463 | if( DEBUG_SYS_GET < tm_end ) |
---|
| 464 | printk("\n[%s] thread[%x,%x] exit / cycle %d\n", |
---|
| 465 | __FUNCTION__ , process->pid, this->trdid, (uint32_t)tm_end ); |
---|
| 466 | #endif |
---|
| 467 | |
---|
| 468 | #if CONFIG_INSTRUMENTATION_SYSCALLS |
---|
| 469 | hal_atomic_add( &syscalls_cumul_cost[SYS_GET] , tm_end - tm_start ); |
---|
| 470 | hal_atomic_add( &syscalls_occurences[SYS_GET] , 1 ); |
---|
| 471 | #endif |
---|
| 472 | |
---|
| 473 | return ret; |
---|
| 474 | |
---|
| 475 | } // end sys_get() |
---|