alpha/threads.h

   1 /****************************** 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: 1998/11/19
  13
  14 *******************************************************************************/
  15
  16
  17 #ifndef __sysdep_threads_h
  18 #define __sysdep_threads_h
  19
  20 #include "../threads/thread.h"
  21
  22 /* Thread handling */
  23
  24 /* prototypes */
  25
  26 void asm_perform_threadswitch (u1 **from, u1 **to, u1 **stackTop);
  27 u1*  asm_initialize_thread_stack (void *func, u1 *stack);
  28 void asm_switchstackandcall (void *stack, void *func, void **stacktopsave);
  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