1 /* 2 * Copyright 2002-2005, The Haiku Team. All rights reserved. 3 * Distributed under the terms of the MIT License. 4 * 5 * Copyright 2002, Travis Geiselbrecht. All rights reserved. 6 * Distributed under the terms of the NewOS License. 7 */ 8 #ifndef _KERNEL_ARCH_x86_THREAD_H 9 #define _KERNEL_ARCH_x86_THREAD_H 10 11 12 #include <arch/cpu.h> 13 14 15 #ifdef __cplusplus 16 extern "C" { 17 #endif 18 19 struct iframe *i386_get_user_iframe(void); 20 void *x86_next_page_directory(struct thread *from, struct thread *to); 21 22 void x86_restart_syscall(struct iframe* frame); 23 24 void i386_return_from_signal(); 25 void i386_end_return_from_signal(); 26 27 // override empty macro 28 #undef arch_syscall_64_bit_return_value 29 void arch_syscall_64_bit_return_value(void); 30 31 32 static 33 inline struct thread * 34 arch_thread_get_current_thread(void) 35 { 36 struct thread *t; 37 read_dr3(t); 38 return t; 39 } 40 41 static inline void 42 arch_thread_set_current_thread(struct thread *t) 43 { 44 write_dr3(t); 45 } 46 47 #ifdef __cplusplus 48 } 49 #endif 50 51 #endif /* _KERNEL_ARCH_x86_THREAD_H */ 52 53