Exemplo n.º 1
0
/* This function also initializes the data and code heaps */
void load_image(vm_parameters *p)
{
	FILE *file = OPEN_READ(p->image_path);
	if(file == NULL)
	{
		print_string("Cannot open image file: "); print_native_string(p->image_path); nl();
		print_string(strerror(errno)); nl();
		exit(1);
	}

	image_header h;
	if(fread(&h,sizeof(image_header),1,file) != 1)
		fatal_error("Cannot read image header",0);

	if(h.magic != image_magic)
		fatal_error("Bad image: magic number check failed",h.magic);

	if(h.version != image_version)
		fatal_error("Bad image: version number check failed",h.version);
	
	load_data_heap(file,&h,p);
	load_code_heap(file,&h,p);

	fclose(file);

	init_objects(&h);

	relocate_data();
	relocate_code();

	/* Store image path name */
	userenv[IMAGE_ENV] = allot_alien(F,(cell)p->image_path);
}
Exemplo n.º 2
0
Arquivo: image.c Projeto: glguy/factor
/* This function also initializes the data and code heaps */
void load_image(F_PARAMETERS *p)
{
	FILE *file = OPEN_READ(p->image);
	if(file == NULL)
	{
		FPRINTF(stderr,"Cannot open image file: %s\n",p->image);
		fprintf(stderr,"%s\n",strerror(errno));
		exit(1);
	}

	F_HEADER h;
	fread(&h,sizeof(F_HEADER),1,file);

	if(h.magic != IMAGE_MAGIC)
		fatal_error("Bad image: magic number check failed",h.magic);

	if(h.version != IMAGE_VERSION)
		fatal_error("Bad image: version number check failed",h.version);
	
	load_data_heap(file,&h,p);
	load_code_heap(file,&h,p);

	fclose(file);

	init_objects(&h);

	relocate_data();
	relocate_code();

	/* Store image path name */
	userenv[IMAGE_ENV] = tag_object(from_native_string(p->image));
}
Exemplo n.º 3
0
/* This function also initializes the data and code heaps */
void factor_vm::load_image(vm_parameters* p) {
  FILE* file = open_image(p);
  if (file == NULL) {
    std::cout << "Cannot open image file: " << p->image_path << std::endl;
    char *msg = threadsafe_strerror(errno);
    std::cout << "strerror:2: " << msg << std::endl;
    free(msg);
    exit(1);
  }
  image_header h;
  if (raw_fread(&h, sizeof(image_header), 1, file) != 1)
    fatal_error("Cannot read image header", 0);

  if (h.magic != image_magic)
    fatal_error("Bad image: magic number check failed", h.magic);

  if (h.version != image_version)
    fatal_error("Bad image: version number check failed", h.version);

  load_data_heap(file, &h, p);
  load_code_heap(file, &h, p);

  raw_fclose(file);

  /* Certain special objects in the image are known to the runtime */
  memcpy(special_objects, h.special_objects, sizeof(special_objects));

  cell data_offset = data->tenured->start - h.data_relocation_base;
  cell code_offset = code->allocator->start - h.code_relocation_base;
  fixup_heaps(data_offset, code_offset);

  /* Store image path name */
  special_objects[OBJ_IMAGE] = allot_alien(false_object, (cell)p->image_path);
}
Exemplo n.º 4
0
// Read an image file from disk, only done once during startup
// This function also initializes the data and code heaps
void factor_vm::load_image(vm_parameters* p) {

  FILE* file = OPEN_READ(p->image_path);
  if (file == NULL) {
    std::cout << "Cannot open image file: " << p->image_path << std::endl;
    char *msg = threadsafe_strerror(errno);
    std::cout << "strerror:2: " << msg << std::endl;
    free(msg);
    exit(1);
  }
  if (p->embedded_image) {
    embedded_image_footer footer;
    if (!read_embedded_image_footer(file, &footer)) {
      std::cout << "No embedded image" << std::endl;
      exit(1);
    }
    safe_fseek(file, (off_t)footer.image_offset, SEEK_SET);
  }

  image_header h;
  if (raw_fread(&h, sizeof(image_header), 1, file) != 1)
    fatal_error("Cannot read image header", 0);

  if (h.magic != image_magic)
    fatal_error("Bad image: magic number check failed", h.magic);

  if (h.version != image_version)
    fatal_error("Bad image: version number check failed", h.version);

  load_data_heap(file, &h, p);
  load_code_heap(file, &h, p);

  raw_fclose(file);

  // Certain special objects in the image are known to the runtime
  memcpy(special_objects, h.special_objects, sizeof(special_objects));

  cell data_offset = data->tenured->start - h.data_relocation_base;
  cell code_offset = code->allocator->start - h.code_relocation_base;
  fixup_heaps(data_offset, code_offset);
}
Exemplo n.º 5
0
/* This function also initializes the data and code heaps */
void factor_vm::load_image(vm_parameters *p)
{
	FILE *file = OPEN_READ(p->image_path);
	if(file == NULL)
	{
		std::cout << "Cannot open image file: " << p->image_path << std::endl;
		std::cout << strerror(errno) << std::endl;
		exit(1);
	}

	image_header h;
	if(safe_fread(&h,sizeof(image_header),1,file) != 1)
		fatal_error("Cannot read image header",0);

	if(h.magic != image_magic)
		fatal_error("Bad image: magic number check failed",h.magic);

	if(h.version != image_version)
		fatal_error("Bad image: version number check failed",h.version);
	
	load_data_heap(file,&h,p);
	load_code_heap(file,&h,p);

	safe_fclose(file);

	init_objects(&h);

	cell data_offset = data->tenured->start - h.data_relocation_base;
	cell code_offset = code->seg->start - h.code_relocation_base;

	fixup_data(data_offset,code_offset);
	fixup_code(data_offset,code_offset);

	/* Store image path name */
	special_objects[OBJ_IMAGE] = allot_alien(false_object,(cell)p->image_path);
}