1 /* Declarations and macros for the basic Mach things set at startup. 2 Copyright (C) 1993-2022 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <https://www.gnu.org/licenses/>. */ 18 19 #ifndef _MACH_INIT_H 20 21 #define _MACH_INIT_H 1 22 23 #include <mach/mach_types.h> 24 25 /* Return the current task's task port. */ 26 extern mach_port_t __mach_task_self (void); 27 extern mach_port_t mach_task_self (void); 28 29 /* This cache is initialized at startup. */ 30 extern mach_port_t __mach_task_self_; 31 #define __mach_task_self() (__mach_task_self_ + 0) /* Not an lvalue. */ 32 #define mach_task_self() (__mach_task_self ()) 33 34 /* This cache is initialized at startup. */ 35 extern mach_port_t __mach_host_self_; 36 #define __mach_host_self() (__mach_host_self_ + 0) /* Not an lvalue. */ 37 #define mach_host_self() (__mach_host_self ()) 38 39 /* Kernel page size. */ 40 extern vm_size_t __vm_page_size; 41 extern vm_size_t vm_page_size; 42 43 /* Round the address X up to a page boundary. */ 44 #define round_page(x) \ 45 ((((vm_offset_t) (x) + __vm_page_size - 1) / __vm_page_size) * \ 46 __vm_page_size) 47 48 /* Truncate the address X down to a page boundary. */ 49 #define trunc_page(x) \ 50 ((((vm_offset_t) (x)) / __vm_page_size) * __vm_page_size) 51 52 #endif /* mach_init.h */ 53