1 /* 2 * Copyright 2002-2009, 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 struct iframe *i386_get_current_iframe(void); 21 struct iframe *i386_get_thread_user_iframe(struct thread *thread); 22 23 void *x86_next_page_directory(struct thread *from, struct thread *to); 24 25 void x86_restart_syscall(struct iframe* frame); 26 27 void i386_return_from_signal(); 28 void i386_end_return_from_signal(); 29 30 // override empty macro 31 #undef arch_syscall_64_bit_return_value 32 void arch_syscall_64_bit_return_value(void); 33 34 35 static 36 inline struct thread * 37 arch_thread_get_current_thread(void) 38 { 39 struct thread *t; 40 read_dr3(t); 41 return t; 42 } 43 44 static inline void 45 arch_thread_set_current_thread(struct thread *t) 46 { 47 write_dr3(t); 48 } 49 50 #ifdef __cplusplus 51 } 52 #endif 53 54 #endif /* _KERNEL_ARCH_x86_THREAD_H */ 55 56