xnu-4570.41.2.tar.gz

[apple/xnu.git] / osfmk / mach / i386 / vm_param.h

diff --git a/osfmk/mach/i386/vm_param.h b/osfmk/mach/i386/vm_param.h
index 151c6a93b598223a6e7e1288e53b7b6160ae5fc2..040472dfeaf86834bf974b66241b01c7355e2b2c 100644 (file)
--- 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) 2000-2012 Apple Inc. All rights reserved.

  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 


@@ -92,21 +92,34 @@
 
 #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              /* 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        PAGE_SIZE               I386_PGBYTES
 #define        PAGE_SHIFT              I386_PGSHIFT
 #define        PAGE_MASK               (PAGE_SIZE - 1)
 

+#define PAGE_MAX_SHIFT          PAGE_SHIFT
+#define PAGE_MAX_SIZE           PAGE_SIZE
+#define PAGE_MAX_MASK           PAGE_MASK
+
+#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.
  */
 
 /*
  *     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_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
 
 /*
  *     Round off or truncate to the nearest page.  These will work


@@ -118,7 +131,30 @@
                                        ~(I386_PGBYTES-1))
 #define i386_trunc_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_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) 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)
+

 
 /* system-wide values */
 #define MACH_VM_MIN_ADDRESS            ((mach_vm_offset_t) 0)
 
 /* system-wide values */
 #define MACH_VM_MIN_ADDRESS            ((mach_vm_offset_t) 0)


@@ -126,29 +162,96 @@
 
 /* process-relative values (all 32-bit legacy only for now) */
 #define VM_MIN_ADDRESS         ((vm_offset_t) 0)
 
 /* 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 
 
 
 #ifdef KERNEL_PRIVATE 
 

+#define TEST_PAGE_SIZE_16K      FALSE
+#define TEST_PAGE_SIZE_4K       TRUE
+

 /* Kernel-wide values */
 /* 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      (252*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_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_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? */
 
 /* 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)
+#else
+# define INTSTACK_SIZE (I386_PGBYTES*4)
+# define KERNEL_STACK_SIZE (I386_PGBYTES*4)
+#endif

 
 #ifdef MACH_KERNEL_PRIVATE
 
 /* For implementing legacy 32-bit interfaces */
 
 #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 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.
+ */
+
+
+#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 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
 
 /*
  *     Conversion between 80386 pages and VM pages


@@ -158,29 +261,24 @@
 #define round_i386_to_vm(p)    (atop(round_page(i386_ptob(p))))
 #define vm_to_i386(p)          (i386_btop(ptoa(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 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                                                       
+
+#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
 
        MACRO_END
 

+#define IS_USERADDR64_CANONICAL(addr)                  \
+       ((addr) < (VM_MAX_USER_PAGE_ADDRESS + PAGE_SIZE))
+

 #endif /* MACH_KERNEL_PRIVATE */
 
 #endif /* KERNEL_PRIVATE */
 #endif /* MACH_KERNEL_PRIVATE */
 
 #endif /* KERNEL_PRIVATE */