X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/b0d623f7f2ae71ed96e60569f61f9a9a27016e80..39236c6e673c41db228275375ab7fdb0f837b292:/osfmk/mach/i386/vm_param.h

diff --git a/osfmk/mach/i386/vm_param.h b/osfmk/mach/i386/vm_param.h
index eae58369a..02bef271f 100644
--- a/osfmk/mach/i386/vm_param.h
+++ b/osfmk/mach/i386/vm_param.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -95,6 +95,12 @@
 #define I386_PGBYTES		4096		/* bytes per 80386 page */
 #define I386_PGSHIFT		12		/* bitshift for pages */
 
+#ifdef PRIVATE
+#define KERNEL_PAGE_SIZE	I386_PGBYTES
+#define KERNEL_PAGE_SHIFT	I386_PGSHIFT
+#define KERNEL_PAGE_MASK	(KERNEL_PAGE_SIZE-1)
+#endif
+
 #define	PAGE_SIZE		I386_PGBYTES
 #define	PAGE_SHIFT		I386_PGSHIFT
 #define	PAGE_MASK		(PAGE_SIZE - 1)
@@ -111,6 +117,7 @@
 #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
@@ -149,7 +156,7 @@
 
 /* process-relative values (all 32-bit legacy only for now) */
 #define VM_MIN_ADDRESS		((vm_offset_t) 0)
-#define VM_USRSTACK32		((vm_offset_t) 0xC0000000)
+#define VM_USRSTACK32		((vm_offset_t) 0xC0000000)	/* ASLR slides stack down by up to 1 MB */
 #define VM_MAX_ADDRESS		((vm_offset_t) 0xFFE00000)
 
 
@@ -165,12 +172,8 @@
  * Maximum physical memory supported.
  */
 #define	K32_MAXMEM	(32*GB)
-#define	K64_MAXMEM	(96*GB)
-#if defined(__i386__)
-#define KERNEL_MAXMEM	K32_MAXMEM
-#else
+#define	K64_MAXMEM	(128*GB)
 #define KERNEL_MAXMEM	K64_MAXMEM
-#endif
 
 /*
  * XXX
@@ -180,25 +183,19 @@
  * We can't let VM allocate memory from there.
  */
 
-#if defined(__i386__)
-
-#define VM_MIN_KERNEL_ADDRESS	((vm_offset_t) 0x00001000U)
-#define VM_MIN_KERNEL_AND_KEXT_ADDRESS VM_MIN_KERNEL_ADDRESS
-
-#define VM_MAX_KERNEL_ADDRESS	((vm_offset_t) 0xFE7FFFFFU)
-#define KERNEL_STACK_SIZE		(I386_PGBYTES*4)
 
-#elif defined(__x86_64__)
+#define KERNEL_IMAGE_TO_PHYS(x) (x)
+#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_MIN_KERNEL_ADDRESS	((vm_offset_t) 0xFFFFFF8000000000UL)
-#define VM_MIN_KERNEL_AND_KEXT_ADDRESS (VM_MIN_KERNEL_ADDRESS - 0x80000000ULL)
 
-#define VM_MAX_KERNEL_ADDRESS	((vm_offset_t) 0xFFFFFFFFFFFFEFFFUL)
-#define KERNEL_STACK_SIZE		(I386_PGBYTES*4)
-
-#else
-#error unsupported architecture
-#endif
+#define KERNEL_STACK_SIZE	(I386_PGBYTES*4)
 
 #define VM_MAP_MIN_ADDRESS	MACH_VM_MIN_ADDRESS
 #define VM_MAP_MAX_ADDRESS	MACH_VM_MAX_ADDRESS
@@ -213,16 +210,22 @@
 #define VM32_MIN_ADDRESS		((vm32_offset_t) 0)
 #define VM32_MAX_ADDRESS		((vm32_offset_t) (VM_MAX_PAGE_ADDRESS & 0xFFFFFFFF))
 
-#if defined(__i386__)
-
-#define LINEAR_KERNEL_ADDRESS	((vm_offset_t) 0x00000000)
-
-#define VM_MIN_KERNEL_LOADED_ADDRESS	((vm_offset_t) 0x00000000U)
-#define VM_MAX_KERNEL_LOADED_ADDRESS	((vm_offset_t) 0x1FFFFFFFU)
+/*
+ * 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 NCOPY_WINDOWS 4
 
-#elif defined(__x86_64__)
+#define	KALLOC_MINSIZE		16	/* minimum allocation size */
+#define	KALLOC_LOG2_MINALIGN	4	/* log2 minimum alignment */
 
 #define LINEAR_KERNEL_ADDRESS	((vm_offset_t) 0x00000000)
 
@@ -231,9 +234,7 @@
 
 #define NCOPY_WINDOWS 0
 
-#else
-#error unsupported architecture
-#endif
+
 
 /*
  *	Conversion between 80386 pages and VM pages
@@ -243,26 +244,19 @@
 #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);    		\
-							\
-	if (__pmap == kernel_pmap) {			\
-		__prot__ |= VM_PROT_WRITE;		\
-	} else {					\
-		assert(!__page->encrypted);		\
-	}						\
-							\
-	pmap_enter(					\
-		__pmap,					\
-		(virtual_address),			\
-		__page->phys_page,			\
-		__prot__,				\
-		flags,					\
-		(wired)					\
-	 );						\
+
+#define PMAP_SET_CACHE_ATTR(mem, object, cache_attr, batch_pmap_op)	\
+	MACRO_BEGIN							\
+		pmap_set_cache_attributes((mem)->phys_page, (cache_attr));	\
+		(object)->set_cache_attr = TRUE;				\
+		(void) batch_pmap_op;					\
+	MACRO_END							
+
+#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)			\