X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/8f6c56a50524aa785f7e596d52dddfb331e18961..bd504ef0e0b883cdd7917b73b3574eb9ce669905:/osfmk/mach/i386/vm_param.h

diff --git a/osfmk/mach/i386/vm_param.h b/osfmk/mach/i386/vm_param.h
index 151c6a93b..12eb226e2 100644
--- a/osfmk/mach/i386/vm_param.h
+++ b/osfmk/mach/i386/vm_param.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -92,21 +92,26 @@
 
 #define BYTE_SIZE		8		/* byte size in bits */
 
-#define I386_PGBYTES	4096	/* bytes per 80386 page */
-#define I386_PGSHIFT	12		/* number of bits to shift for pages */
+#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_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 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
@@ -118,7 +123,26 @@
 					~(I386_PGBYTES-1))
 #define i386_trunc_page(x)	(((pmap_paddr_t)(x)) & ~(I386_PGBYTES-1))
 
-#define VM_MAX_PAGE_ADDRESS     0x00000000C0000000ULL
+
+
+#define VM_MIN_ADDRESS64	((user_addr_t) 0x0000000000000000ULL)
+/*
+ * default top of user stack... it grows down from here
+ */
+#define VM_USRSTACK64		((user_addr_t) 0x00007FFF5FC00000ULL)
+#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)
+
 
 /* system-wide values */
 #define MACH_VM_MIN_ADDRESS		((mach_vm_offset_t) 0)
@@ -126,14 +150,68 @@
 
 /* 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_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 
 
 /* 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	(96*GB)
+#if defined(__i386__)
+#define KERNEL_MAXMEM	K32_MAXMEM
+#else
+#define KERNEL_MAXMEM	K64_MAXMEM
+#endif
+
+/*
+ * 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.
+ */
+
+#if defined(__i386__)
+
+#define KERNEL_IMAGE_TO_PHYS(x) (x)
+#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)
+
+#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_KERNEL_IS_KEXT(_o)						       \
+                (((vm_offset_t)(_o) >= VM_MIN_KERNEL_AND_KEXT_ADDRESS) &&      \
+                 ((vm_offset_t)(_o) <  VM_MIN_KERNEL_ADDRESS))
+
+#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
 
 /* FIXME  - always leave like this? */
 #define	INTSTACK_SIZE	(I386_PGBYTES*4)
@@ -141,14 +219,51 @@
 #ifdef	MACH_KERNEL_PRIVATE
 
 /* For implementing legacy 32-bit interfaces */
-#define VM32_SUPPORT
+#define VM32_SUPPORT			1
 #define VM32_MIN_ADDRESS		((vm32_offset_t) 0)
 #define VM32_MAX_ADDRESS		((vm32_offset_t) (VM_MAX_PAGE_ADDRESS & 0xFFFFFFFF))
 
-#define LINEAR_KERNEL_ADDRESS	((vm_offset_t) 0xc0000000)
+/*
+ * 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.
+ */
+
+#if defined(__i386__)
+
+#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) 0x0c000000U)
-#define VM_MAX_KERNEL_LOADED_ADDRESS	((vm_offset_t) 0x1fffffffU)
+#define VM_MIN_KERNEL_LOADED_ADDRESS	((vm_offset_t) 0x00000000U)
+#define VM_MAX_KERNEL_LOADED_ADDRESS	((vm_offset_t) 0x1FFFFFFFU)
+
+#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)
+
+#define VM_MIN_KERNEL_LOADED_ADDRESS	((vm_offset_t) 0xFFFFFF8000000000UL)
+#define VM_MAX_KERNEL_LOADED_ADDRESS	((vm_offset_t) 0xFFFFFF801FFFFFFFUL)
+
+#define NCOPY_WINDOWS 0
+
+
+#else
+#error unsupported architecture
+#endif
 
 /*
  *	Conversion between 80386 pages and VM pages
@@ -158,29 +273,24 @@
 #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 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)			\
+	((addr) < (VM_MAX_USER_PAGE_ADDRESS + PAGE_SIZE))
+
 #endif	/* MACH_KERNEL_PRIVATE */
 
 #endif	/* KERNEL_PRIVATE */