cpu-common.h

   1 #ifndef CPU_COMMON_H
   2 #define CPU_COMMON_H 1
   3
   4 /* CPU interfaces that are target indpendent.  */
   5
   6 #if defined(__arm__) || defined(__sparc__) || defined(__mips__) || defined(__hppa__)
   7 #define WORDS_ALIGNED
   8 #endif
   9
  10 #include "bswap.h"
  11
  12 /* address in the RAM (different from a physical address) */
  13 typedef unsigned long ram_addr_t;
  14
  15 /* memory API */
  16
  17 typedef void CPUWriteMemoryFunc(void *opaque, target_phys_addr_t addr, uint32_t value);
  18 typedef uint32_t CPUReadMemoryFunc(void *opaque, target_phys_addr_t addr);
  19
  20 void cpu_register_physical_memory_offset(target_phys_addr_t start_addr,
  21                                          ram_addr_t size,
  22                                          ram_addr_t phys_offset,
  23                                          ram_addr_t region_offset);
  24 static inline void cpu_register_physical_memory(target_phys_addr_t start_addr,
  25                                                 ram_addr_t size,
  26                                                 ram_addr_t phys_offset)
  27 {
  28     cpu_register_physical_memory_offset(start_addr, size, phys_offset, 0);
  29 }
  30
  31 ram_addr_t cpu_get_physical_page_desc(target_phys_addr_t addr);
  32 ram_addr_t qemu_ram_alloc(ram_addr_t);
  33 void qemu_ram_free(ram_addr_t addr);
  34 /* This should only be used for ram local to a device.  */
  35 void *qemu_get_ram_ptr(ram_addr_t addr);
  36 /* This should not be used by devices.  */
  37 ram_addr_t qemu_ram_addr_from_host(void *ptr);
  38
  39 int cpu_register_io_memory(CPUReadMemoryFunc * const *mem_read,
  40                            CPUWriteMemoryFunc * const *mem_write,
  41                            void *opaque);
  42 void cpu_unregister_io_memory(int table_address);
  43
  44 void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
  45                             int len, int is_write);
  46 static inline void cpu_physical_memory_read(target_phys_addr_t addr,
  47                                             uint8_t *buf, int len)
  48 {
  49     cpu_physical_memory_rw(addr, buf, len, 0);
  50 }
  51 static inline void cpu_physical_memory_write(target_phys_addr_t addr,
  52                                              const uint8_t *buf, int len)
  53 {
  54     cpu_physical_memory_rw(addr, (uint8_t *)buf, len, 1);
  55 }
  56 void *cpu_physical_memory_map(target_phys_addr_t addr,
  57                               target_phys_addr_t *plen,
  58                               int is_write);
  59 void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len,
  60                                int is_write, target_phys_addr_t access_len);
  61 void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque));
  62 void cpu_unregister_map_client(void *cookie);
  63
  64 uint32_t ldub_phys(target_phys_addr_t addr);
  65 uint32_t lduw_phys(target_phys_addr_t addr);
  66 uint32_t ldl_phys(target_phys_addr_t addr);
  67 uint64_t ldq_phys(target_phys_addr_t addr);
  68 void stl_phys_notdirty(target_phys_addr_t addr, uint32_t val);
  69 void stq_phys_notdirty(target_phys_addr_t addr, uint64_t val);
  70 void stb_phys(target_phys_addr_t addr, uint32_t val);
  71 void stw_phys(target_phys_addr_t addr, uint32_t val);
  72 void stl_phys(target_phys_addr_t addr, uint32_t val);
  73 void stq_phys(target_phys_addr_t addr, uint64_t val);
  74
  75 void cpu_physical_memory_write_rom(target_phys_addr_t addr,
  76                                    const uint8_t *buf, int len);
  77
  78 #define IO_MEM_SHIFT       3
  79
  80 #define IO_MEM_RAM         (0 << IO_MEM_SHIFT) /* hardcoded offset */
  81 #define IO_MEM_ROM         (1 << IO_MEM_SHIFT) /* hardcoded offset */
  82 #define IO_MEM_UNASSIGNED  (2 << IO_MEM_SHIFT)
  83 #define IO_MEM_NOTDIRTY    (3 << IO_MEM_SHIFT)
  84
  85 /* Acts like a ROM when read and like a device when written.  */
  86 #define IO_MEM_ROMD        (1)
  87 #define IO_MEM_SUBPAGE     (2)
  88 #define IO_MEM_SUBWIDTH    (4)
  89
  90 #endif /* !CPU_COMMON_H */