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 125