/* * Copyright (c) 2003-2006 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 1.1 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ #ifndef _I386_COMMPAGE_H #define _I386_COMMPAGE_H #ifndef __ASSEMBLER__ #include <stdint.h> #endif /* __ASSEMBLER__ */ /* The following macro is used to generate the 64-bit commpage address for a given * routine, based on its 32-bit address. This is used in the kernel to compile * the 64-bit commpage. Since the kernel is a 32-bit object, cpu_capabilities.h * only defines the 32-bit address. */ #define _COMM_PAGE_32_TO_64( ADDRESS ) ( ADDRESS + _COMM_PAGE64_START_ADDRESS - _COMM_PAGE32_START_ADDRESS ) #ifdef __ASSEMBLER__ #define COMMPAGE_DESCRIPTOR(label,address,must,cant) \ L ## label ## _end: ;\ .const_data ;\ L ## label ## _size = L ## label ## _end - L ## label ;\ .private_extern _commpage_ ## label ;\ _commpage_ ## label ## : ;\ .long L ## label ;\ .long L ## label ## _size ;\ .long address ;\ .long must ;\ .long cant ;\ .text #else /* __ASSEMBLER__ */ /* Each potential commpage routine is described by one of these. * Note that the COMMPAGE_DESCRIPTOR macro (above), used in * assembly language, must agree with this. */ typedef struct commpage_descriptor { void *code_address; // address of code long code_length; // length in bytes long commpage_address; // put at this address (_COMM_PAGE_BCOPY etc) long musthave; // _cpu_capability bits we must have long canthave; // _cpu_capability bits we can't have } commpage_descriptor; extern char *commPagePtr32; // virt address of 32-bit commpage in kernel map extern char *commPagePtr64; // ...and of 64-bit commpage extern void _commpage_set_timestamp(uint64_t abstime, uint64_t secs); #define commpage_set_timestamp(x, y, z) _commpage_set_timestamp((x), (y)) extern void commpage_set_nanotime(uint64_t tsc_base, uint64_t ns_base, uint32_t scale, uint32_t shift); #include <kern/page_decrypt.h> #endif /* __ASSEMBLER__ */ #endif /* _I386_COMMPAGE_H */