i386/threads.h

   1 /* i386/threads.h **************************************************************
   2
   3     Copyright (c) 1997 A. Krall, R. Grafl, M. Gschwind, M. Probst
   4
   5     See file COPYRIGHT for information on usage and disclaimer of warranties
   6
   7     System dependent part of thread header file.
   8
   9     Authors: Mark Probst         EMAIL: cacao@complang.tuwien.ac.at
  10              Andreas  Krall      EMAIL: cacao@complang.tuwien.ac.at
  11
  12     Last Change: $Id: threads.h 526 2003-10-22 21:14:50Z twisti $
  13
  14 *******************************************************************************/
  15
  16
  17 #ifndef __sysdep_threads_h
  18 #define __sysdep_threads_h
  19
  20 #include "config.h"
  21 #include "threads/thread.h"
  22
  23 /* Thread handling */
  24
  25 /* prototypes */
  26
  27 void asm_perform_threadswitch (u1 **from, u1 **to, u1 **stackTop);
  28 u1*  asm_initialize_thread_stack (void *func, u1 *stack);
  29
  30 /* access macros */
  31
  32 #define THREADSTACKSIZE         (32 * 1024)
  33
  34 #define THREADSWITCH(to, from)  asm_perform_threadswitch(&(from)->restorePoint,\
  35                                     &(to)->restorePoint, &(from)->usedStackTop)
  36
  37 #define THREADINIT(to, func)    (to)->restorePoint =                         \
  38                                     asm_initialize_thread_stack((u1*)(func), \
  39                                                             (to)->stackEnd)
  40
  41 #define THREADINFO(e) \
  42     do { \
  43         (e)->restorePoint = 0; \
  44         (e)->flags = THREAD_FLAGS_NOSTACKALLOC; \
  45     } while(0)
  46
  47 #endif