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 static inline bool cpu_physical_memory_get_dirty(ram_addr_t start, 44 ram_addr_t length, 45 unsigned client) 46 { 47 ram_addr_t addr, end; 48 49 assert(client < DIRTY_MEMORY_NUM); 50 51 end = TARGET_PAGE_ALIGN(start + length); 52 start &= TARGET_PAGE_MASK; 53 for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) { 54 if (test_bit(addr >> TARGET_PAGE_BITS, 55 ram_list.dirty_memory[client])) { 56 return true; 57 } 58 } 59 return false; 60 } 61 62 static inline bool cpu_physical_memory_get_dirty_flag(ram_addr_t addr, 63 unsigned client) 64 { 65 return cpu_physical_memory_get_dirty(addr, 1, client); 66 } 67 68 /* read dirty bit (return 0 or 1) */ 69 static inline bool cpu_physical_memory_is_dirty(ram_addr_t addr) 70 { 71 bool vga = cpu_physical_memory_get_dirty_flag(addr, DIRTY_MEMORY_VGA); 72 bool code = cpu_physical_memory_get_dirty_flag(addr, DIRTY_MEMORY_CODE); 73 bool migration = 74 cpu_physical_memory_get_dirty_flag(addr, DIRTY_MEMORY_MIGRATION); 75 return vga && code && migration; 76 } 77 78 static inline void cpu_physical_memory_set_dirty_flag(ram_addr_t addr, 79 unsigned client) 80 { 81 assert(client < DIRTY_MEMORY_NUM); 82 set_bit(addr >> TARGET_PAGE_BITS, ram_list.dirty_memory[client]); 83 } 84 85 static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start, 86 ram_addr_t length) 87 { 88 ram_addr_t addr, end; 89 90 end = TARGET_PAGE_ALIGN(start + length); 91 start &= TARGET_PAGE_MASK; 92 for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) { 93 set_bit(addr >> TARGET_PAGE_BITS, 94 ram_list.dirty_memory[DIRTY_MEMORY_MIGRATION]); 95 set_bit(addr >> TARGET_PAGE_BITS, 96 ram_list.dirty_memory[DIRTY_MEMORY_VGA]); 97 set_bit(addr >> TARGET_PAGE_BITS, 98 ram_list.dirty_memory[DIRTY_MEMORY_CODE]); 99 } 100 xen_modified_memory(addr, length); 101 } 102 103 static inline void cpu_physical_memory_mask_dirty_range(ram_addr_t start, 104 ram_addr_t length, 105 unsigned client) 106 { 107 ram_addr_t addr, end; 108 109 assert(client < DIRTY_MEMORY_NUM); 110 end = TARGET_PAGE_ALIGN(start + length); 111 start &= TARGET_PAGE_MASK; 112 for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) { 113 clear_bit(addr >> TARGET_PAGE_BITS, ram_list.dirty_memory[client]); 114 } 115 } 116 117 void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end, 118 unsigned client); 119 120 #endif 121 122 #endif 123