text: #ifndef LOADER_H
  #define LOADER_H
  #include "qapi/qmp/qdict.h"
  #include "hw/nvram/fw_cfg.h"
  
  /* loader.c */
  /**
   * get_image_size: retrieve size of an image file
   * @filename: Path to the image file
   *
   * Returns the size of the image file on success, -1 otherwise.
   * On error, errno is also set as appropriate.
   */
  int get_image_size(const char *filename);
  int load_image(const char *filename, uint8_t *addr); /* deprecated */
  ssize_t load_image_size(const char *filename, void *addr, size_t size);
  
  /**load_image_targphys_as:
   * @filename: Path to the image file
   * @addr: Address to load the image to
   * @max_sz: The maximum size of the image to load
   * @as: The AddressSpace to load the ELF to. The value of address_space_memory
   *      is used if nothing is supplied here.
   *
   * Load a fixed image into memory.
   *
   * Returns the size of the loaded image on success, -1 otherwise.
   */
  int load_image_targphys_as(const char *filename,
                             hwaddr addr, uint64_t max_sz, AddressSpace *as);
  
  /** load_image_targphys:
   * Same as load_image_targphys_as(), but doesn't allow the caller to specify
   * an AddressSpace.
   */
  int load_image_targphys(const char *filename, hwaddr,
                          uint64_t max_sz);
  
  /**
   * load_image_mr: load an image into a memory region
   * @filename: Path to the image file
   * @mr: Memory Region to load into
   *
   * Load the specified file into the memory region.
   * The file loaded is registered as a ROM, so its contents will be
   * reinstated whenever the system is reset.
   * If the file is larger than the memory region's size the call will fail.
   * Returns -1 on failure, or the size of the file.
   */
  int load_image_mr(const char *filename, MemoryRegion *mr);
  
  /* This is the limit on the maximum uncompressed image size that
   * load_image_gzipped_buffer() and load_image_gzipped() will read. It prevents
   * g_malloc() in those functions from allocating a huge amount of memory.
   */
  #define LOAD_IMAGE_MAX_GUNZIP_BYTES (256 << 20)
  
  int load_image_gzipped_buffer(const char *filename, uint64_t max_sz,
                                uint8_t **buffer);
  int load_image_gzipped(const char *filename, hwaddr addr, uint64_t max_sz);
  
  #define ELF_LOAD_FAILED       -1
  #define ELF_LOAD_NOT_ELF      -2
  #define ELF_LOAD_WRONG_ARCH   -3
  #define ELF_LOAD_WRONG_ENDIAN -4
  const char *load_elf_strerror(int error);
  
  /** load_elf_ram:
   * @filename: Path of ELF file
   * @translate_fn: optional function to translate load addresses
   * @translate_opaque: opaque data passed to @translate_fn
   * @pentry: Populated with program entry point. Ignored if NULL.
   * @lowaddr: Populated with lowest loaded address. Ignored if NULL.
   * @highaddr: Populated with highest loaded address. Ignored if NULL.
   * @bigendian: Expected ELF endianness. 0 for LE otherwise BE
   * @elf_machine: Expected ELF machine type
   * @clear_lsb: Set to mask off LSB of addresses (Some architectures use
   *             this for non-address data)
   * @data_swab: Set to order of byte swapping for data. 0 for no swap, 1
   *             for swapping bytes within halfwords, 2 for bytes within
   *             words and 3 for within doublewords.
   * @as: The AddressSpace to load the ELF to. The value of address_space_memory
   *      is used if nothing is supplied here.
   * @load_rom : Load ELF binary as ROM
   *
   * Load an ELF file's contents to the emulated system's address space.
   * Clients may optionally specify a callback to perform address
   * translations. @pentry, @lowaddr and @highaddr are optional pointers
   * which will be populated with various load information. @bigendian and
   * @elf_machine give the expected endianness and machine for the ELF the
   * load will fail if the target ELF does not match. Some architectures
   * have some architecture-specific behaviours that come into effect when
   * their particular values for @elf_machine are set.
   * If @elf_machine is EM_NONE then the machine type will be read from the
   * ELF header and no checks will be carried out against the machine type.
   */
  int load_elf_ram(const char *filename,
                   uint64_t (*translate_fn)(void *, uint64_t),
                   void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
                   uint64_t *highaddr, int big_endian, int elf_machine,
                   int clear_lsb, int data_swab, AddressSpace *as,
                   bool load_rom);
  
  /** load_elf_as:
   * Same as load_elf_ram(), but always loads the elf as ROM
   */
  int load_elf_as(const char *filename,
                  uint64_t (*translate_fn)(void *, uint64_t),
                  void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
                  uint64_t *highaddr, int big_endian, int elf_machine,
                  int clear_lsb, int data_swab, AddressSpace *as);
  
  /** load_elf:
   * Same as load_elf_as(), but doesn't allow the caller to specify an
   * AddressSpace.
   */
  int load_elf(const char *filename, uint64_t (*translate_fn)(void *, uint64_t),
               void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
               uint64_t *highaddr, int big_endian, int elf_machine,
               int clear_lsb, int data_swab);
  
  /** load_elf_hdr:
   * @filename: Path of ELF file
   * @hdr: Buffer to populate with header data. Header data will not be
   * filled if set to NULL.
   * @is64: Set to true if the ELF is 64bit. Ignored if set to NULL
   * @errp: Populated with an error in failure cases
   *
   * Inspect an ELF file's header. Read its full header contents into a
   * buffer and/or determine if the ELF is 64bit.
   */
  void load_elf_hdr(const char *filename, void *hdr, bool *is64, Error **errp);
  
  int load_aout(const char *filename, hwaddr addr, int max_sz,
                int bswap_needed, hwaddr target_page_size);
  
  /** load_uimage_as:
   * @filename: Path of uimage file
   * @ep: Populated with program entry point. Ignored if NULL.
   * @loadaddr: Populated with the load address. Ignored if NULL.
   * @is_linux: Is set to true if the image loaded is Linux. Ignored if NULL.
   * @translate_fn: optional function to translate load addresses
   * @translate_opaque: opaque data passed to @translate_fn
   * @as: The AddressSpace to load the ELF to. The value of address_space_memory
   *      is used if nothing is supplied here.
   *
   * Loads a u-boot image into memory.
   *
   * Returns the size of the loaded image on success, -1 otherwise.
   */
  int load_uimage_as(const char *filename, hwaddr *ep,
                     hwaddr *loadaddr, int *is_linux,
                     uint64_t (*translate_fn)(void *, uint64_t),
                     void *translate_opaque, AddressSpace *as);
  
  /** load_uimage:
   * Same as load_uimage_as(), but doesn't allow the caller to specify an
   * AddressSpace.
   */
  int load_uimage(const char *filename, hwaddr *ep,
                  hwaddr *loadaddr, int *is_linux,
                  uint64_t (*translate_fn)(void *, uint64_t),
                  void *translate_opaque);
  
  /**
   * load_ramdisk:
   * @filename: Path to the ramdisk image
   * @addr: Memory address to load the ramdisk to
   * @max_sz: Maximum allowed ramdisk size (for non-u-boot ramdisks)
   *
   * Load a ramdisk image with U-Boot header to the specified memory
   * address.
   *
   * Returns the size of the loaded image on success, -1 otherwise.
   */
  int load_ramdisk(const char *filename, hwaddr addr, uint64_t max_sz);
  
  ssize_t gunzip(void *dst, size_t dstlen, uint8_t *src, size_t srclen);
  
  ssize_t read_targphys(const char *name,
                        int fd, hwaddr dst_addr, size_t nbytes);
  void pstrcpy_targphys(const char *name,
                        hwaddr dest, int buf_size,
                        const char *source);
  
  extern bool option_rom_has_mr;
  extern bool rom_file_has_mr;
  
  int rom_add_file(const char *file, const char *fw_dir,
                   hwaddr addr, int32_t bootindex,
                   bool option_rom, MemoryRegion *mr, AddressSpace *as);
  MemoryRegion *rom_add_blob(const char *name, const void *blob, size_t len,
                             size_t max_len, hwaddr addr,
                             const char *fw_file_name,
                             FWCfgCallback fw_callback,
                             void *callback_opaque, AddressSpace *as,
                             bool read_only);
  int rom_add_elf_program(const char *name, void *data, size_t datasize,
                          size_t romsize, hwaddr addr, AddressSpace *as);
  int rom_check_and_register_reset(void);
  void rom_set_fw(FWCfgState *f);
  void rom_set_order_override(int order);
  void rom_reset_order_override(void);
  int rom_copy(uint8_t *dest, hwaddr addr, size_t size);
  void *rom_ptr(hwaddr addr);
  void hmp_info_roms(Monitor *mon, const QDict *qdict);
  
  #define rom_add_file_fixed(_f, _a, _i)          \
      rom_add_file(_f, NULL, _a, _i, false, NULL, NULL)
  #define rom_add_blob_fixed(_f, _b, _l, _a)      \
      rom_add_blob(_f, _b, _l, _l, _a, NULL, NULL, NULL, NULL, true)
  #define rom_add_file_mr(_f, _mr, _i)            \
      rom_add_file(_f, NULL, 0, _i, false, _mr, NULL)
  #define rom_add_file_as(_f, _as, _i)            \
      rom_add_file(_f, NULL, 0, _i, false, NULL, _as)
  #define rom_add_file_fixed_as(_f, _a, _i, _as)          \
      rom_add_file(_f, NULL, _a, _i, false, NULL, _as)
  #define rom_add_blob_fixed_as(_f, _b, _l, _a, _as)      \
      rom_add_blob(_f, _b, _l, _l, _a, NULL, NULL, NULL, _as, true)
  
  #define PC_ROM_MIN_VGA     0xc0000
  #define PC_ROM_MIN_OPTION  0xc8000
  #define PC_ROM_MAX         0xe0000
  #define PC_ROM_ALIGN       0x800
  #define PC_ROM_SIZE        (PC_ROM_MAX - PC_ROM_MIN_VGA)
  
  int rom_add_vga(const char *file);
  int rom_add_option(const char *file, int32_t bootindex);
  
  /* This is the usual maximum in uboot, so if a uImage overflows this, it would
   * overflow on real hardware too. */
  #define UBOOT_MAX_GUNZIP_BYTES (64 << 20)
  
  #endif
  