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  1. /*
  2.  * Copyright (C) 2006 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. #include <thread.h>
  30. #include <libc.h>
  31. #include <stdlib.h>
  32. #include <arch/faddr.h>
  33. #include <kernel/proc/uarg.h>
  34.  
  35. void thread_main(uspace_arg_t *uarg)
  36. {
  37.     uarg->uspace_thread_function(uarg->uspace_thread_arg);
  38.     free(uarg->uspace_stack);
  39.     free(uarg);
  40.     thread_exit(0);
  41. }
  42.  
  43. int thread_create(void (* function)(void *), void *arg, char *name)
  44. {
  45.     char *stack;
  46.     uspace_arg_t *uarg;
  47.  
  48.     stack = (char *) malloc(getpagesize());
  49.     if (!stack)
  50.         return -1;
  51.        
  52.     uarg = (uspace_arg_t *) malloc(sizeof(uspace_arg_t));
  53.     if (!uarg) {
  54.         free(stack);
  55.         return -1;
  56.     }
  57.     uarg->uspace_entry = (void *) FADDR(__thread_entry);
  58.     uarg->uspace_stack = (void *) stack;
  59.     uarg->uspace_thread_function = (void *) FADDR(function);
  60.     uarg->uspace_thread_arg = arg;
  61.     uarg->uspace_uarg = uarg;
  62.    
  63.     return __SYSCALL2(SYS_THREAD_CREATE, (sysarg_t) uarg, (sysarg_t) name);
  64. }
  65.  
  66. void thread_exit(int status)
  67. {
  68.     __SYSCALL1(SYS_THREAD_EXIT, (sysarg_t) status);
  69. }
  70.