text: static void glue(bswap_ehdr, SZ)(struct elfhdr *ehdr)
  {
      bswap16s(&ehdr->e_type);			/* Object file type */
      bswap16s(&ehdr->e_machine);		/* Architecture */
      bswap32s(&ehdr->e_version);		/* Object file version */
      bswapSZs(&ehdr->e_entry);		/* Entry point virtual address */
      bswapSZs(&ehdr->e_phoff);		/* Program header table file offset */
      bswapSZs(&ehdr->e_shoff);		/* Section header table file offset */
      bswap32s(&ehdr->e_flags);		/* Processor-specific flags */
      bswap16s(&ehdr->e_ehsize);		/* ELF header size in bytes */
      bswap16s(&ehdr->e_phentsize);		/* Program header table entry size */
      bswap16s(&ehdr->e_phnum);		/* Program header table entry count */
      bswap16s(&ehdr->e_shentsize);		/* Section header table entry size */
      bswap16s(&ehdr->e_shnum);		/* Section header table entry count */
      bswap16s(&ehdr->e_shstrndx);		/* Section header string table index */
  }
  
  static void glue(bswap_phdr, SZ)(struct elf_phdr *phdr)
  {
      bswap32s(&phdr->p_type);			/* Segment type */
      bswapSZs(&phdr->p_offset);		/* Segment file offset */
      bswapSZs(&phdr->p_vaddr);		/* Segment virtual address */
      bswapSZs(&phdr->p_paddr);		/* Segment physical address */
      bswapSZs(&phdr->p_filesz);		/* Segment size in file */
      bswapSZs(&phdr->p_memsz);		/* Segment size in memory */
      bswap32s(&phdr->p_flags);		/* Segment flags */
      bswapSZs(&phdr->p_align);		/* Segment alignment */
  }
  
  static void glue(bswap_shdr, SZ)(struct elf_shdr *shdr)
  {
      bswap32s(&shdr->sh_name);
      bswap32s(&shdr->sh_type);
      bswapSZs(&shdr->sh_flags);
      bswapSZs(&shdr->sh_addr);
      bswapSZs(&shdr->sh_offset);
      bswapSZs(&shdr->sh_size);
      bswap32s(&shdr->sh_link);
      bswap32s(&shdr->sh_info);
      bswapSZs(&shdr->sh_addralign);
      bswapSZs(&shdr->sh_entsize);
  }
  
  static void glue(bswap_sym, SZ)(struct elf_sym *sym)
  {
      bswap32s(&sym->st_name);
      bswapSZs(&sym->st_value);
      bswapSZs(&sym->st_size);
      bswap16s(&sym->st_shndx);
  }
  
  static void glue(bswap_rela, SZ)(struct elf_rela *rela)
  {
      bswapSZs(&rela->r_offset);
      bswapSZs(&rela->r_info);
      bswapSZs((elf_word *)&rela->r_addend);
  }
  
  static struct elf_shdr *glue(find_section, SZ)(struct elf_shdr *shdr_table,
                                                 int n, int type)
  {
      int i;
      for(i=0;i<n;i++) {
          if (shdr_table[i].sh_type == type)
              return shdr_table + i;
      }
      return NULL;
  }
  
  static int glue(symfind, SZ)(const void *s0, const void *s1)
  {
      hwaddr addr = *(hwaddr *)s0;
      struct elf_sym *sym = (struct elf_sym *)s1;
      int result = 0;
      if (addr < sym->st_value) {
          result = -1;
      } else if (addr >= sym->st_value + sym->st_size) {
          result = 1;
      }
      return result;
  }
  
  static const char *glue(lookup_symbol, SZ)(struct syminfo *s,
                                             hwaddr orig_addr)
  {
      struct elf_sym *syms = glue(s->disas_symtab.elf, SZ);
      struct elf_sym *sym;
  
      sym = bsearch(&orig_addr, syms, s->disas_num_syms, sizeof(*syms),
                    glue(symfind, SZ));
      if (sym != NULL) {
          return s->disas_strtab + sym->st_name;
      }
  
      return "";
  }
  
  static int glue(symcmp, SZ)(const void *s0, const void *s1)
  {
      struct elf_sym *sym0 = (struct elf_sym *)s0;
      struct elf_sym *sym1 = (struct elf_sym *)s1;
      return (sym0->st_value < sym1->st_value)
          ? -1
          : ((sym0->st_value > sym1->st_value) ? 1 : 0);
  }
  
  static int glue(load_symbols, SZ)(struct elfhdr *ehdr, int fd, int must_swab,
                                    int clear_lsb)
  {
      struct elf_shdr *symtab, *strtab, *shdr_table = NULL;
      struct elf_sym *syms = NULL;
      struct syminfo *s;
      int nsyms, i;
      char *str = NULL;
  
      shdr_table = load_at(fd, ehdr->e_shoff,
                           sizeof(struct elf_shdr) * ehdr->e_shnum);
      if (!shdr_table)
          return -1;
  
      if (must_swab) {
          for (i = 0; i < ehdr->e_shnum; i++) {
              glue(bswap_shdr, SZ)(shdr_table + i);
          }
      }
  
      symtab = glue(find_section, SZ)(shdr_table, ehdr->e_shnum, SHT_SYMTAB);
      if (!symtab)
          goto fail;
      syms = load_at(fd, symtab->sh_offset, symtab->sh_size);
      if (!syms)
          goto fail;
  
      nsyms = symtab->sh_size / sizeof(struct elf_sym);
  
      i = 0;
      while (i < nsyms) {
          if (must_swab)
              glue(bswap_sym, SZ)(&syms[i]);
          /* We are only interested in function symbols.
             Throw everything else away.  */
          if (syms[i].st_shndx == SHN_UNDEF ||
                  syms[i].st_shndx >= SHN_LORESERVE ||
                  ELF_ST_TYPE(syms[i].st_info) != STT_FUNC) {
              nsyms--;
              if (i < nsyms) {
                  syms[i] = syms[nsyms];
              }
              continue;
          }
          if (clear_lsb) {
              /* The bottom address bit marks a Thumb or MIPS16 symbol.  */
              syms[i].st_value &= ~(glue(glue(Elf, SZ), _Addr))1;
          }
          i++;
      }
      syms = g_realloc(syms, nsyms * sizeof(*syms));
  
      qsort(syms, nsyms, sizeof(*syms), glue(symcmp, SZ));
      for (i = 0; i < nsyms - 1; i++) {
          if (syms[i].st_size == 0) {
              syms[i].st_size = syms[i + 1].st_value - syms[i].st_value;
          }
      }
  
      /* String table */
      if (symtab->sh_link >= ehdr->e_shnum)
          goto fail;
      strtab = &shdr_table[symtab->sh_link];
  
      str = load_at(fd, strtab->sh_offset, strtab->sh_size);
      if (!str)
          goto fail;
  
      /* Commit */
      s = g_malloc0(sizeof(*s));
      s->lookup_symbol = glue(lookup_symbol, SZ);
      glue(s->disas_symtab.elf, SZ) = syms;
      s->disas_num_syms = nsyms;
      s->disas_strtab = str;
      s->next = syminfos;
      syminfos = s;
      g_free(shdr_table);
      return 0;
   fail:
      g_free(syms);
      g_free(str);
      g_free(shdr_table);
      return -1;
  }
  
  static int glue(elf_reloc, SZ)(struct elfhdr *ehdr, int fd, int must_swab,
                                 uint64_t (*translate_fn)(void *, uint64_t),
                                 void *translate_opaque, uint8_t *data,
                                 struct elf_phdr *ph, int elf_machine)
  {
      struct elf_shdr *reltab, *shdr_table = NULL;
      struct elf_rela *rels = NULL;
      int nrels, i, ret = -1;
      elf_word wordval;
      void *addr;
  
      shdr_table = load_at(fd, ehdr->e_shoff,
                           sizeof(struct elf_shdr) * ehdr->e_shnum);
      if (!shdr_table) {
          return -1;
      }
      if (must_swab) {
          for (i = 0; i < ehdr->e_shnum; i++) {
              glue(bswap_shdr, SZ)(&shdr_table[i]);
          }
      }
  
      reltab = glue(find_section, SZ)(shdr_table, ehdr->e_shnum, SHT_RELA);
      if (!reltab) {
          goto fail;
      }
      rels = load_at(fd, reltab->sh_offset, reltab->sh_size);
      if (!rels) {
          goto fail;
      }
      nrels = reltab->sh_size / sizeof(struct elf_rela);
  
      for (i = 0; i < nrels; i++) {
          if (must_swab) {
              glue(bswap_rela, SZ)(&rels[i]);
          }
          if (rels[i].r_offset < ph->p_vaddr ||
              rels[i].r_offset >= ph->p_vaddr + ph->p_filesz) {
              continue;
          }
          addr = &data[rels[i].r_offset - ph->p_vaddr];
          switch (elf_machine) {
          case EM_S390:
              switch (rels[i].r_info) {
              case R_390_RELATIVE:
                  wordval = *(elf_word *)addr;
                  if (must_swab) {
                      bswapSZs(&wordval);
                  }
                  wordval = translate_fn(translate_opaque, wordval);
                  if (must_swab) {
                      bswapSZs(&wordval);
                  }
                  *(elf_word *)addr = wordval;
                  break;
              default:
                  fprintf(stderr, "Unsupported relocation type %i!\n",
                          (int)rels[i].r_info);
              }
          }
      }
  
      ret = 0;
  fail:
      g_free(rels);
      g_free(shdr_table);
      return ret;
  }
  
  static int glue(load_elf, SZ)(const char *name, int fd,
                                uint64_t (*translate_fn)(void *, uint64_t),
                                void *translate_opaque,
                                int must_swab, uint64_t *pentry,
                                uint64_t *lowaddr, uint64_t *highaddr,
                                int elf_machine, int clear_lsb, int data_swab,
                                AddressSpace *as, bool load_rom)
  {
      struct elfhdr ehdr;
      struct elf_phdr *phdr = NULL, *ph;
      int size, i, total_size;
      elf_word mem_size, file_size;
      uint64_t addr, low = (uint64_t)-1, high = 0;
      uint8_t *data = NULL;
      char label[128];
      int ret = ELF_LOAD_FAILED;
  
      if (read(fd, &ehdr, sizeof(ehdr)) != sizeof(ehdr))
          goto fail;
      if (must_swab) {
          glue(bswap_ehdr, SZ)(&ehdr);
      }
  
      if (elf_machine <= EM_NONE) {
          /* The caller didn't specify an ARCH, we can figure it out */
          elf_machine = ehdr.e_machine;
      }
  
      switch (elf_machine) {
          case EM_PPC64:
              if (ehdr.e_machine != EM_PPC64) {
                  if (ehdr.e_machine != EM_PPC) {
                      ret = ELF_LOAD_WRONG_ARCH;
                      goto fail;
                  }
              }
              break;
          case EM_X86_64:
              if (ehdr.e_machine != EM_X86_64) {
                  if (ehdr.e_machine != EM_386) {
                      ret = ELF_LOAD_WRONG_ARCH;
                      goto fail;
                  }
              }
              break;
          case EM_MICROBLAZE:
              if (ehdr.e_machine != EM_MICROBLAZE) {
                  if (ehdr.e_machine != EM_MICROBLAZE_OLD) {
                      ret = ELF_LOAD_WRONG_ARCH;
                      goto fail;
                  }
              }
              break;
          case EM_MOXIE:
              if (ehdr.e_machine != EM_MOXIE) {
                  if (ehdr.e_machine != EM_MOXIE_OLD) {
                      ret = ELF_LOAD_WRONG_ARCH;
                      goto fail;
                  }
              }
              break;
          default:
              if (elf_machine != ehdr.e_machine) {
                  ret = ELF_LOAD_WRONG_ARCH;
                  goto fail;
              }
      }
  
      if (pentry)
     	*pentry = (uint64_t)(elf_sword)ehdr.e_entry;
  
      glue(load_symbols, SZ)(&ehdr, fd, must_swab, clear_lsb);
  
      size = ehdr.e_phnum * sizeof(phdr[0]);
      if (lseek(fd, ehdr.e_phoff, SEEK_SET) != ehdr.e_phoff) {
          goto fail;
      }
      phdr = g_malloc0(size);
      if (!phdr)
          goto fail;
      if (read(fd, phdr, size) != size)
          goto fail;
      if (must_swab) {
          for(i = 0; i < ehdr.e_phnum; i++) {
              ph = &phdr[i];
              glue(bswap_phdr, SZ)(ph);
          }
      }
  
      total_size = 0;
      for(i = 0; i < ehdr.e_phnum; i++) {
          ph = &phdr[i];
          if (ph->p_type == PT_LOAD) {
              mem_size = ph->p_memsz; /* Size of the ROM */
              file_size = ph->p_filesz; /* Size of the allocated data */
              data = g_malloc0(file_size);
              if (ph->p_filesz > 0) {
                  if (lseek(fd, ph->p_offset, SEEK_SET) < 0) {
                      goto fail;
                  }
                  if (read(fd, data, file_size) != file_size) {
                      goto fail;
                  }
              }
  
              /* The ELF spec is somewhat vague about the purpose of the
               * physical address field. One common use in the embedded world
               * is that physical address field specifies the load address
               * and the virtual address field specifies the execution address.
               * Segments are packed into ROM or flash, and the relocation
               * and zero-initialization of data is done at runtime. This
               * means that the memsz header represents the runtime size of the
               * segment, but the filesz represents the loadtime size. If
               * we try to honour the memsz value for an ELF file like this
               * we will end up with overlapping segments (which the
               * loader.c code will later reject).
               * We support ELF files using this scheme by by checking whether
               * paddr + memsz for this segment would overlap with any other
               * segment. If so, then we assume it's using this scheme and
               * truncate the loaded segment to the filesz size.
               * If the segment considered as being memsz size doesn't overlap
               * then we use memsz for the segment length, to handle ELF files
               * which assume that the loader will do the zero-initialization.
               */
              if (mem_size > file_size) {
                  /* If this segment's zero-init portion overlaps another
                   * segment's data or zero-init portion, then truncate this one.
                   * Invalid ELF files where the segments overlap even when
                   * only file_size bytes are loaded will be rejected by
                   * the ROM overlap check in loader.c, so we don't try to
                   * explicitly detect those here.
                   */
                  int j;
                  elf_word zero_start = ph->p_paddr + file_size;
                  elf_word zero_end = ph->p_paddr + mem_size;
  
                  for (j = 0; j < ehdr.e_phnum; j++) {
                      struct elf_phdr *jph = &phdr[j];
  
                      if (i != j && jph->p_type == PT_LOAD) {
                          elf_word other_start = jph->p_paddr;
                          elf_word other_end = jph->p_paddr + jph->p_memsz;
  
                          if (!(other_start >= zero_end ||
                                zero_start >= other_end)) {
                              mem_size = file_size;
                              break;
                          }
                      }
                  }
              }
  
              /* address_offset is hack for kernel images that are
                 linked at the wrong physical address.  */
              if (translate_fn) {
                  addr = translate_fn(translate_opaque, ph->p_paddr);
                  glue(elf_reloc, SZ)(&ehdr, fd, must_swab,  translate_fn,
                                      translate_opaque, data, ph, elf_machine);
              } else {
                  addr = ph->p_paddr;
              }
  
              if (data_swab) {
                  int j;
                  for (j = 0; j < file_size; j += (1 << data_swab)) {
                      uint8_t *dp = data + j;
                      switch (data_swab) {
                      case (1):
                          *(uint16_t *)dp = bswap16(*(uint16_t *)dp);
                          break;
                      case (2):
                          *(uint32_t *)dp = bswap32(*(uint32_t *)dp);
                          break;
                      case (3):
                          *(uint64_t *)dp = bswap64(*(uint64_t *)dp);
                          break;
                      default:
                          g_assert_not_reached();
                      }
                  }
              }
  
              /* the entry pointer in the ELF header is a virtual
               * address, if the text segments paddr and vaddr differ
               * we need to adjust the entry */
              if (pentry && !translate_fn &&
                      ph->p_vaddr != ph->p_paddr &&
                      ehdr.e_entry >= ph->p_vaddr &&
                      ehdr.e_entry < ph->p_vaddr + ph->p_filesz &&
                      ph->p_flags & PF_X) {
                  *pentry = ehdr.e_entry - ph->p_vaddr + ph->p_paddr;
              }
  
              if (mem_size == 0) {
                  /* Some ELF files really do have segments of zero size;
                   * just ignore them rather than trying to create empty
                   * ROM blobs, because the zero-length blob can falsely
                   * trigger the overlapping-ROM-blobs check.
                   */
                  g_free(data);
              } else {
                  if (load_rom) {
                      snprintf(label, sizeof(label), "phdr #%d: %s", i, name);
  
                      /* rom_add_elf_program() seize the ownership of 'data' */
                      rom_add_elf_program(label, data, file_size, mem_size,
                                          addr, as);
                  } else {
                      cpu_physical_memory_write(addr, data, file_size);
                      g_free(data);
                  }
              }
  
              total_size += mem_size;
              if (addr < low)
                  low = addr;
              if ((addr + mem_size) > high)
                  high = addr + mem_size;
  
              data = NULL;
          }
      }
      g_free(phdr);
      if (lowaddr)
          *lowaddr = (uint64_t)(elf_sword)low;
      if (highaddr)
          *highaddr = (uint64_t)(elf_sword)high;
      return total_size;
   fail:
      g_free(data);
      g_free(phdr);
      return ret;
  }
  