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 #include "hw/xen.h"
  28
  29 ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
  30                                    MemoryRegion *mr);
  31 ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr);
  32 void qemu_ram_free(ram_addr_t addr);
  33 void qemu_ram_free_from_ptr(ram_addr_t addr);
  34
  35 struct MemoryRegion;
  36 struct MemoryRegionSection;
  37 void cpu_register_physical_memory_log(struct MemoryRegionSection *section,
  38                                       bool readonly);
  39
  40 void qemu_register_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size);
  41 void qemu_unregister_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size);
  42
  43 int cpu_physical_memory_set_dirty_tracking(int enable);
  44
  45 #define VGA_DIRTY_FLAG       0x01
  46 #define CODE_DIRTY_FLAG      0x02
  47 #define MIGRATION_DIRTY_FLAG 0x08
  48
  49 static inline int cpu_physical_memory_get_dirty_flags(ram_addr_t addr)
  50 {
  51     return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS];
  52 }
  53
  54 /* read dirty bit (return 0 or 1) */
  55 static inline int cpu_physical_memory_is_dirty(ram_addr_t addr)
  56 {
  57     return cpu_physical_memory_get_dirty_flags(addr) == 0xff;
  58 }
  59
  60 static inline int cpu_physical_memory_get_dirty(ram_addr_t start,
  61                                                 ram_addr_t length,
  62                                                 int dirty_flags)
  63 {
  64     int ret = 0;
  65     ram_addr_t addr, end;
  66
  67     end = TARGET_PAGE_ALIGN(start + length);
  68     start &= TARGET_PAGE_MASK;
  69     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
  70         ret |= cpu_physical_memory_get_dirty_flags(addr) & dirty_flags;
  71     }
  72     return ret;
  73 }
  74
  75 static inline int cpu_physical_memory_set_dirty_flags(ram_addr_t addr,
  76                                                       int dirty_flags)
  77 {
  78     if ((dirty_flags & MIGRATION_DIRTY_FLAG) &&
  79         !cpu_physical_memory_get_dirty(addr, TARGET_PAGE_SIZE,
  80                                        MIGRATION_DIRTY_FLAG)) {
  81         ram_list.dirty_pages++;
  82     }
  83     return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] |= dirty_flags;
  84 }
  85
  86 static inline void cpu_physical_memory_set_dirty(ram_addr_t addr)
  87 {
  88     cpu_physical_memory_set_dirty_flags(addr, 0xff);
  89 }
  90
  91 static inline int cpu_physical_memory_clear_dirty_flags(ram_addr_t addr,
  92                                                         int dirty_flags)
  93 {
  94     int mask = ~dirty_flags;
  95
  96     if ((dirty_flags & MIGRATION_DIRTY_FLAG) &&
  97         cpu_physical_memory_get_dirty(addr, TARGET_PAGE_SIZE,
  98                                       MIGRATION_DIRTY_FLAG)) {
  99         ram_list.dirty_pages--;
 100     }
 101     return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] &= mask;
 102 }
 103
 104 static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start,
 105                                                        ram_addr_t length,
 106                                                        int dirty_flags)
 107 {
 108     ram_addr_t addr, end;
 109
 110     end = TARGET_PAGE_ALIGN(start + length);
 111     start &= TARGET_PAGE_MASK;
 112     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
 113         cpu_physical_memory_set_dirty_flags(addr, dirty_flags);
 114     }
 115     xen_modified_memory(addr, length);
 116 }
 117
 118 static inline void cpu_physical_memory_mask_dirty_range(ram_addr_t start,
 119                                                         ram_addr_t length,
 120                                                         int dirty_flags)
 121 {
 122     ram_addr_t addr, end;
 123
 124     end = TARGET_PAGE_ALIGN(start + length);
 125     start &= TARGET_PAGE_MASK;
 126     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
 127         cpu_physical_memory_clear_dirty_flags(addr, dirty_flags);
 128     }
 129 }
 130
 131 void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
 132                                      int dirty_flags);
 133
 134 extern const IORangeOps memory_region_iorange_ops;
 135
 136 #endif
 137
 138 #endif