src/system/libroot/os/arch/x86/thread.c

   1 /*
   2  * Copyright 2003-2005, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6
   7 #include <OS.h>
   8 #include "syscalls.h"
   9
  10
  11 thread_id
  12 find_thread(const char *name)
  13 {
  14         // BeOS R5 applications also use this trick as find_thread was available
  15         // in BeOS R5 OS.h as inline function. Do not change storage of thread id.
  16         if (!name) {
  17                 thread_id thread;
  18                 __asm__ __volatile__ (
  19                         "movl   %%fs:4, %%eax \n\t"
  20                         : "=a" (thread));
  21                 return thread;
  22         }
  23         return _kern_find_thread(name);
  24 }
  25
  26
  27 // see OS.h from BeOS R5 for the reason why we need this
  28 // there find_thread (see above) is provided as inline function
  29 extern thread_id _kfind_thread_(const char *name);
  30
  31
  32 thread_id
  33 _kfind_thread_(const char *name)
  34 {
  35         return _kern_find_thread(name);
  36 }
  37
  38
  39 extern thread_id _kget_thread_stacks_(thread_id thread, uint32 *stacks);
  40
  41 status_t
  42 _kget_thread_stacks_(thread_id thread, uint32 *stacks)
  43 {
  44         // This one is obviously called from the R4.5 startup code. I am not
  45         // exactly sure how it returns its infos, but just returning an
  46         // error seems to work fine as well
  47         return B_ERROR;
  48 }
  49