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