1/* 2 * Copyright 2003-2011, Haiku Inc. All rights reserved. 3 * Distributed under the terms of the MIT License. 4 * 5 * Authors: 6 * Axel D��rfler <axeld@pinc-software.de> 7 * Ingo Weinhold <bonefish@cs.tu-berlin.de> 8 */ 9#ifndef _KERNEL_ARCH_M68K_THREAD_H 10#define _KERNEL_ARCH_M68K_THREAD_H 11 12#include <arch/cpu.h> 13#include <arch/thread.h> 14 15#ifdef __cplusplus 16extern "C" { 17#endif 18 19void m68k_push_iframe(struct iframe_stack *stack, struct iframe *frame); 20void m68k_pop_iframe(struct iframe_stack *stack); 21struct iframe *m68k_get_user_iframe(void); 22 23uint32 m68k_next_page_directory(Thread *from, Thread *to); 24 25/* as we won't support SMP on m68k (yet?) we can use a global here */ 26extern Thread *gCurrentThread; 27 28extern inline Thread * 29arch_thread_get_current_thread(void) 30{ 31 return gCurrentThread; 32} 33 34 35extern inline void 36arch_thread_set_current_thread(Thread *t) 37{ 38 gCurrentThread = t; 39} 40 41#if 0 42/* this would only work on 030... */ 43 44extern inline Thread * 45arch_thread_get_current_thread(void) 46{ 47 uint64 v = 0; 48 asm volatile("pmove %%srp,(%0)" : : "a"(&v)); 49 return (Thread *)(uint32)(v & 0xffffffff); 50} 51 52 53extern inline void 54arch_thread_set_current_thread(Thread *t) 55{ 56 uint64 v; 57 asm volatile("pmove %%srp,(%0)\n" \ 58 "move %1,(4,%0)\n" \ 59 "pmove (%0),%%srp" : : "a"(&v), "d"(t)); 60} 61#endif 62 63#ifdef __cplusplus 64} 65#endif 66 67 68#endif /* _KERNEL_ARCH_M68K_THREAD_H */ 69