exec-obsolete.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 EXEC_OBSOLETE_H
  20 #define EXEC_OBSOLETE_H
  21
  22 #ifndef WANT_EXEC_OBSOLETE
  23 #error Do not include exec-obsolete.h
  24 #endif
  25
  26 #ifndef CONFIG_USER_ONLY
  27
  28 ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
  29                                    MemoryRegion *mr);
  30 ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr);
  31 void qemu_ram_free(ram_addr_t addr);
  32 void qemu_ram_free_from_ptr(ram_addr_t addr);
  33
  34 struct MemoryRegion;
  35 struct MemoryRegionSection;
  36 void cpu_register_physical_memory_log(struct MemoryRegionSection *section,
  37                                       bool readonly);
  38
  39 void qemu_register_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size);
  40 void qemu_unregister_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size);
  41
  42 int cpu_physical_memory_set_dirty_tracking(int enable);
  43
  44 #define VGA_DIRTY_FLAG       0x01
  45 #define CODE_DIRTY_FLAG      0x02
  46 #define MIGRATION_DIRTY_FLAG 0x08
  47
  48 static inline int cpu_physical_memory_get_dirty_flags(ram_addr_t addr)
  49 {
  50     return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS];
  51 }
  52
  53 /* read dirty bit (return 0 or 1) */
  54 static inline int cpu_physical_memory_is_dirty(ram_addr_t addr)
  55 {
  56     return cpu_physical_memory_get_dirty_flags(addr) == 0xff;
  57 }
  58
  59 static inline int cpu_physical_memory_get_dirty(ram_addr_t start,
  60                                                 ram_addr_t length,
  61                                                 int dirty_flags)
  62 {
  63     int ret = 0;
  64     ram_addr_t addr, end;
  65
  66     end = TARGET_PAGE_ALIGN(start + length);
  67     start &= TARGET_PAGE_MASK;
  68     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
  69         ret |= cpu_physical_memory_get_dirty_flags(addr) & dirty_flags;
  70     }
  71     return ret;
  72 }
  73
  74 static inline int cpu_physical_memory_set_dirty_flags(ram_addr_t addr,
  75                                                       int dirty_flags)
  76 {
  77     if ((dirty_flags & MIGRATION_DIRTY_FLAG) &&
  78         !cpu_physical_memory_get_dirty(addr, TARGET_PAGE_SIZE,
  79                                        MIGRATION_DIRTY_FLAG)) {
  80         ram_list.dirty_pages++;
  81     }
  82     return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] |= dirty_flags;
  83 }
  84
  85 static inline void cpu_physical_memory_set_dirty(ram_addr_t addr)
  86 {
  87     cpu_physical_memory_set_dirty_flags(addr, 0xff);
  88 }
  89
  90 static inline int cpu_physical_memory_clear_dirty_flags(ram_addr_t addr,
  91                                                         int dirty_flags)
  92 {
  93     int mask = ~dirty_flags;
  94
  95     if ((dirty_flags & MIGRATION_DIRTY_FLAG) &&
  96         cpu_physical_memory_get_dirty(addr, TARGET_PAGE_SIZE,
  97                                       MIGRATION_DIRTY_FLAG)) {
  98         ram_list.dirty_pages--;
  99     }
 100     return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] &= mask;
 101 }
 102
 103 static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start,
 104                                                        ram_addr_t length,
 105                                                        int dirty_flags)
 106 {
 107     ram_addr_t addr, end;
 108
 109     end = TARGET_PAGE_ALIGN(start + length);
 110     start &= TARGET_PAGE_MASK;
 111     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
 112         cpu_physical_memory_set_dirty_flags(addr, dirty_flags);
 113     }
 114 }
 115
 116 static inline void cpu_physical_memory_mask_dirty_range(ram_addr_t start,
 117                                                         ram_addr_t length,
 118                                                         int dirty_flags)
 119 {
 120     ram_addr_t addr, end;
 121
 122     end = TARGET_PAGE_ALIGN(start + length);
 123     start &= TARGET_PAGE_MASK;
 124     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
 125         cpu_physical_memory_clear_dirty_flags(addr, dirty_flags);
 126     }
 127 }
 128
 129 void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
 130                                      int dirty_flags);
 131
 132 extern const IORangeOps memory_region_iorange_ops;
 133
 134 #endif
 135
 136 #endif