include/exec/memory-internal.h

   1 /*
   2  * Declarations for obsolete exec.c functions
   3  *
   4  * Copyright 2011 Red Hat, Inc. and/or its affiliates
   5  *
   6  * Authors:
   7  *  Avi Kivity <avi@redhat.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or
  10  * later.  See the COPYING file in the top-level directory.
  11  *
  12  */
  13
  14 /*
  15  * This header is for use by exec.c and memory.c ONLY.  Do not include it.
  16  * The functions declared here will be removed soon.
  17  */
  18
  19 #ifndef MEMORY_INTERNAL_H
  20 #define MEMORY_INTERNAL_H
  21
  22 #ifndef CONFIG_USER_ONLY
  23 #include "hw/xen/xen.h"
  24
  25
  26 typedef struct AddressSpaceDispatch AddressSpaceDispatch;
  27
  28 void address_space_init_dispatch(AddressSpace *as);
  29 void address_space_destroy_dispatch(AddressSpace *as);
  30
  31 extern const MemoryRegionOps unassigned_mem_ops;
  32
  33 bool memory_region_access_valid(MemoryRegion *mr, hwaddr addr,
  34                                 unsigned size, bool is_write);
  35
  36 ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
  37                                    MemoryRegion *mr);
  38 ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr);
  39 void *qemu_get_ram_ptr(ram_addr_t addr);
  40 void qemu_ram_free(ram_addr_t addr);
  41 void qemu_ram_free_from_ptr(ram_addr_t addr);
  42
  43 #define VGA_DIRTY_FLAG       0x01
  44 #define CODE_DIRTY_FLAG      0x02
  45 #define MIGRATION_DIRTY_FLAG 0x08
  46
  47 static inline int cpu_physical_memory_get_dirty_flags(ram_addr_t addr)
  48 {
  49     return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS];
  50 }
  51
  52 /* read dirty bit (return 0 or 1) */
  53 static inline int cpu_physical_memory_is_dirty(ram_addr_t addr)
  54 {
  55     return cpu_physical_memory_get_dirty_flags(addr) == 0xff;
  56 }
  57
  58 static inline int cpu_physical_memory_get_dirty(ram_addr_t start,
  59                                                 ram_addr_t length,
  60                                                 int dirty_flags)
  61 {
  62     int ret = 0;
  63     ram_addr_t addr, end;
  64
  65     end = TARGET_PAGE_ALIGN(start + length);
  66     start &= TARGET_PAGE_MASK;
  67     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
  68         ret |= cpu_physical_memory_get_dirty_flags(addr) & dirty_flags;
  69     }
  70     return ret;
  71 }
  72
  73 static inline int cpu_physical_memory_set_dirty_flags(ram_addr_t addr,
  74                                                       int dirty_flags)
  75 {
  76     return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] |= dirty_flags;
  77 }
  78
  79 static inline void cpu_physical_memory_set_dirty(ram_addr_t addr)
  80 {
  81     cpu_physical_memory_set_dirty_flags(addr, 0xff);
  82 }
  83
  84 static inline int cpu_physical_memory_clear_dirty_flags(ram_addr_t addr,
  85                                                         int dirty_flags)
  86 {
  87     int mask = ~dirty_flags;
  88
  89     return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] &= mask;
  90 }
  91
  92 static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start,
  93                                                        ram_addr_t length,
  94                                                        int dirty_flags)
  95 {
  96     ram_addr_t addr, end;
  97
  98     end = TARGET_PAGE_ALIGN(start + length);
  99     start &= TARGET_PAGE_MASK;
 100     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
 101         cpu_physical_memory_set_dirty_flags(addr, dirty_flags);
 102     }
 103     xen_modified_memory(addr, length);
 104 }
 105
 106 static inline void cpu_physical_memory_mask_dirty_range(ram_addr_t start,
 107                                                         ram_addr_t length,
 108                                                         int dirty_flags)
 109 {
 110     ram_addr_t addr, end;
 111
 112     end = TARGET_PAGE_ALIGN(start + length);
 113     start &= TARGET_PAGE_MASK;
 114     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
 115         cpu_physical_memory_clear_dirty_flags(addr, dirty_flags);
 116     }
 117 }
 118
 119 void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
 120                                      int dirty_flags);
 121
 122 #endif
 123
 124 #endif