X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/6601e61aa18bf4f09af135ff61fc7f4771d23b06..eb6b6ca394357805f2bdba989abae309f718b4d8:/osfmk/mach/i386/vm_param.h diff --git a/osfmk/mach/i386/vm_param.h b/osfmk/mach/i386/vm_param.h index abc489418..f140978d7 100644 --- a/osfmk/mach/i386/vm_param.h +++ b/osfmk/mach/i386/vm_param.h @@ -1,54 +1,60 @@ /* - * Copyright (c) 2000-2004 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 + * Copyright (c) 2000-2012 Apple Inc. All rights reserved. + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ + * + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. + * + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The 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@ + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ */ -/* +/* * Mach Operating System * Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University * All Rights Reserved. - * + * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. - * + * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. - * + * * Carnegie Mellon requests users of this software to return to - * + * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 - * + * * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. */ -/* +/* * Copyright (c) 1994 The University of Utah and * the Computer Systems Laboratory at the University of Utah (CSL). * All rights reserved. @@ -81,26 +87,39 @@ * them. */ -#ifndef _MACH_I386_VM_PARAM_H_ +#ifndef _MACH_I386_VM_PARAM_H_ #define _MACH_I386_VM_PARAM_H_ -#define BYTE_SIZE 8 /* byte size in bits */ +#define BYTE_SIZE 8 /* byte size in bits */ + +#define I386_PGBYTES 4096 /* bytes per 80386 page */ +#define I386_PGSHIFT 12 /* bitshift for pages */ + +#define PAGE_SIZE I386_PGBYTES +#define PAGE_SHIFT I386_PGSHIFT +#define PAGE_MASK (PAGE_SIZE - 1) -#define I386_PGBYTES 4096 /* bytes per 80386 page */ -#define I386_PGSHIFT 12 /* number of bits to shift for pages */ +#define PAGE_MAX_SHIFT PAGE_SHIFT +#define PAGE_MAX_SIZE PAGE_SIZE +#define PAGE_MAX_MASK PAGE_MASK -#define PAGE_SIZE I386_PGBYTES -#define PAGE_SHIFT I386_PGSHIFT -#define PAGE_MASK (PAGE_SIZE - 1) +#define PAGE_MIN_SHIFT PAGE_SHIFT +#define PAGE_MIN_SIZE PAGE_SIZE +#define PAGE_MIN_MASK PAGE_MASK + +#define I386_LPGBYTES 2*1024*1024 /* bytes per large page */ +#define I386_LPGSHIFT 21 /* bitshift for large pages */ +#define I386_LPGMASK (I386_LPGBYTES-1) /* * Convert bytes to pages and convert pages to bytes. * No rounding is used. */ -#define i386_btop(x) (((pmap_paddr_t)(x)) >> I386_PGSHIFT) -#define machine_btop(x) i386_btop(x) -#define i386_ptob(x) (((pmap_paddr_t)(x)) << I386_PGSHIFT) +#define i386_btop(x) ((ppnum_t)((x) >> I386_PGSHIFT)) +#define machine_btop(x) i386_btop(x) +#define i386_ptob(x) (((pmap_paddr_t)(x)) << I386_PGSHIFT) +#define machine_ptob(x) i386_ptob(x) /* * Round off or truncate to the nearest page. These will work @@ -108,75 +127,165 @@ * bytes. */ -#define i386_round_page(x) ((((pmap_paddr_t)(x)) + I386_PGBYTES - 1) & \ - ~(I386_PGBYTES-1)) -#define i386_trunc_page(x) (((pmap_paddr_t)(x)) & ~(I386_PGBYTES-1)) +#define i386_round_page(x) ((((pmap_paddr_t)(x)) + I386_PGBYTES - 1) & \ + ~(I386_PGBYTES-1)) +#define i386_trunc_page(x) (((pmap_paddr_t)(x)) & ~(I386_PGBYTES-1)) + + + +#define VM_MIN_ADDRESS64 ((user_addr_t) 0x0000000000000000ULL) +/* + * default top of user stack... it grows down from here + */ +#define VM_USRSTACK64 ((user_addr_t) 0x00007FFEEFC00000ULL) + +/* + * XXX TODO: Obsolete? + */ +#define VM_DYLD64 ((user_addr_t) 0x00007FFF5FC00000ULL) +#define VM_LIB64_SHR_DATA ((user_addr_t) 0x00007FFF60000000ULL) +#define VM_LIB64_SHR_TEXT ((user_addr_t) 0x00007FFF80000000ULL) +/* + * the end of the usable user address space , for now about 47 bits. + * the 64 bit commpage is past the end of this + */ +#define VM_MAX_PAGE_ADDRESS ((user_addr_t) 0x00007FFFFFE00000ULL) +/* + * canonical end of user address space for limits checking + */ +#define VM_MAX_USER_PAGE_ADDRESS ((user_addr_t)0x00007FFFFFFFF000ULL) -#define VM_MAX_PAGE_ADDRESS 0x00000000C0000000ULL /* system-wide values */ -#define MACH_VM_MIN_ADDRESS ((mach_vm_offset_t) 0) -#define MACH_VM_MAX_ADDRESS ((mach_vm_offset_t) VM_MAX_PAGE_ADDRESS) +#define MACH_VM_MIN_ADDRESS ((mach_vm_offset_t) 0) +#define MACH_VM_MAX_ADDRESS ((mach_vm_offset_t) VM_MAX_PAGE_ADDRESS) /* process-relative values (all 32-bit legacy only for now) */ -#define VM_MIN_ADDRESS ((vm_offset_t) 0) -#define VM_MAX_ADDRESS ((vm_offset_t) (VM_MAX_PAGE_ADDRESS & 0xFFFFFFFF)) +#define VM_MIN_ADDRESS ((vm_offset_t) 0) +#define VM_USRSTACK32 ((vm_offset_t) 0xC0000000) /* ASLR slides stack down by up to 1 MB */ +#define VM_MAX_ADDRESS ((vm_offset_t) 0xFFE00000) + -#ifdef KERNEL_PRIVATE +#ifdef KERNEL_PRIVATE + +#define TEST_PAGE_SIZE_16K FALSE +#define TEST_PAGE_SIZE_4K TRUE /* Kernel-wide values */ -#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t) 0xC0000000U) -#define VM_MAX_KERNEL_ADDRESS ((vm_offset_t) 0xFfffffffU) -#define KERNEL_STACK_SIZE (I386_PGBYTES*4) +#define KB (1024ULL) +#define MB (1024*KB) +#define GB (1024*MB) + +/* + * Maximum physical memory supported. + */ +#define K32_MAXMEM (32*GB) +#define K64_MAXMEM (1536*GB) +#define KERNEL_MAXMEM K64_MAXMEM + +/* + * XXX + * The kernel max VM address is limited to 0xFF3FFFFF for now because + * some data structures are explicitly allocated at 0xFF400000 without + * VM's knowledge (see osfmk/i386/locore.s for the allocation of PTmap and co.). + * We can't let VM allocate memory from there. + */ + + +#define KERNEL_IMAGE_TO_PHYS(x) (x) +#define VM_KERNEL_POINTER_SIGNIFICANT_BITS 39 +#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t) 0xFFFFFF8000000000UL) +#define VM_MIN_KERNEL_PAGE ((ppnum_t)0) +#define VM_MIN_KERNEL_AND_KEXT_ADDRESS (VM_MIN_KERNEL_ADDRESS - 0x80000000ULL) +#define VM_MAX_KERNEL_ADDRESS ((vm_offset_t) 0xFFFFFFFFFFFFEFFFUL) +#define VM_MAX_KERNEL_ADDRESS_EFI32 ((vm_offset_t) 0xFFFFFF80FFFFEFFFUL) +#define KEXT_ALLOC_MAX_OFFSET (2 * 1024 * 1024 * 1024UL) +#define KEXT_ALLOC_BASE(x) ((x) - KEXT_ALLOC_MAX_OFFSET) +#define KEXT_ALLOC_SIZE(x) (KEXT_ALLOC_MAX_OFFSET - (x)) + +#define VM_KERNEL_STRIP_PTR(_v) (_v) + +#define VM_KERNEL_ADDRESS(va) ((((vm_address_t)(va))>=VM_MIN_KERNEL_AND_KEXT_ADDRESS) && \ + (((vm_address_t)(va))<=VM_MAX_KERNEL_ADDRESS)) + +#define VM_MAP_MIN_ADDRESS MACH_VM_MIN_ADDRESS +#define VM_MAP_MAX_ADDRESS MACH_VM_MAX_ADDRESS /* FIXME - always leave like this? */ -#define INTSTACK_SIZE (I386_PGBYTES*4) +#if KASAN +/* Increase the stack sizes to account for the redzones that get added to every + * stack object. */ +# define INTSTACK_SIZE (I386_PGBYTES*4*4) +# define KERNEL_STACK_SIZE (I386_PGBYTES*4*4) +#elif DEBUG +# define INTSTACK_SIZE (I386_PGBYTES*4) +# define KERNEL_STACK_SIZE (I386_PGBYTES*6) +#else +# define INTSTACK_SIZE (I386_PGBYTES*4) +# define KERNEL_STACK_SIZE (I386_PGBYTES*4) +#endif -#ifdef MACH_KERNEL_PRIVATE +#ifdef MACH_KERNEL_PRIVATE /* For implementing legacy 32-bit interfaces */ -#define VM32_SUPPORT -#define VM32_MIN_ADDRESS ((vm32_offset_t) 0) -#define VM32_MAX_ADDRESS ((vm32_offset_t) (VM_MAX_PAGE_ADDRESS & 0xFFFFFFFF)) +#define VM32_SUPPORT 1 +#define VM32_MIN_ADDRESS ((vm32_offset_t) 0) +#define VM32_MAX_ADDRESS ((vm32_offset_t) (VM_MAX_PAGE_ADDRESS & 0xFFFFFFFF)) + +/* + * kalloc() parameters: + * + * Historically kalloc's underlying zones were power-of-2 sizes, with a + * KALLOC_MINSIZE of 16 bytes. The allocator ensured that + * (sizeof == alignof) >= 16 for all kalloc allocations. + * + * Today kalloc may use zones with intermediate sizes, constrained by + * KALLOC_MINSIZE and a minimum alignment, expressed by KALLOC_LOG2_MINALIGN. + * + * The common alignment for LP64 is for longs and pointers i.e. 8 bytes. + */ + + +#define KALLOC_MINSIZE 16 /* minimum allocation size */ +#define KALLOC_LOG2_MINALIGN 4 /* log2 minimum alignment */ + +#define LINEAR_KERNEL_ADDRESS ((vm_offset_t) 0x00000000) + +#define VM_MIN_KERNEL_LOADED_ADDRESS ((vm_offset_t) 0xFFFFFF8000000000UL) +#define VM_MAX_KERNEL_LOADED_ADDRESS ((vm_offset_t) 0xFFFFFF801FFFFFFFUL) + +#define NCOPY_WINDOWS 0 -#define LINEAR_KERNEL_ADDRESS ((vm_offset_t) 0xc0000000) -#define VM_MIN_KERNEL_LOADED_ADDRESS ((vm_offset_t) 0x0c000000U) -#define VM_MAX_KERNEL_LOADED_ADDRESS ((vm_offset_t) 0x1fffffffU) /* * Conversion between 80386 pages and VM pages */ -#define trunc_i386_to_vm(p) (atop(trunc_page(i386_ptob(p)))) -#define round_i386_to_vm(p) (atop(round_page(i386_ptob(p)))) -#define vm_to_i386(p) (i386_btop(ptoa(p))) - -#define PMAP_ENTER(pmap, virtual_address, page, protection, flags, wired) \ - MACRO_BEGIN \ - pmap_t __pmap = (pmap); \ - vm_page_t __page = (page); \ - vm_prot_t __prot__ = \ - (protection) & ~(page)->page_lock; \ - \ - if (__pmap == kernel_pmap) { \ - __prot__ |= VM_PROT_WRITE; \ - } else { \ - assert(!__page->encrypted); \ - } \ - \ - pmap_enter( \ - __pmap, \ - (virtual_address), \ - __page->phys_page, \ - __prot__, \ - flags, \ - (wired) \ - ); \ +#define trunc_i386_to_vm(p) (atop(trunc_page(i386_ptob(p)))) +#define round_i386_to_vm(p) (atop(round_page(i386_ptob(p)))) +#define vm_to_i386(p) (i386_btop(ptoa(p))) + + +#define PMAP_SET_CACHE_ATTR(mem, object, cache_attr, batch_pmap_op) \ + MACRO_BEGIN \ + pmap_set_cache_attributes(VM_PAGE_GET_PHYS_PAGE(mem), (cache_attr)); \ + (object)->set_cache_attr = TRUE; \ + (void) batch_pmap_op; \ MACRO_END -#endif /* MACH_KERNEL_PRIVATE */ +#define PMAP_BATCH_SET_CACHE_ATTR(object, user_page_list, cache_attr, num_pages, batch_pmap_op) \ + MACRO_BEGIN \ + (void) user_page_list; \ + (void) num_pages; \ + (void) batch_pmap_op; \ + MACRO_END + +#define IS_USERADDR64_CANONICAL(addr) \ + ((addr) < (VM_MAX_USER_PAGE_ADDRESS)) + +#endif /* MACH_KERNEL_PRIVATE */ -#endif /* KERNEL_PRIVATE */ +#endif /* KERNEL_PRIVATE */ -#endif /* _MACH_I386_VM_PARAM_H_ */ +#endif /* _MACH_I386_VM_PARAM_H_ */