| 222 | } |
| 223 | |
| 224 | static void *create_image(struct elf_file *elf, int core, char *savename, |
| 225 | int *image_size) |
| 226 | { |
| 227 | char *img; |
| 228 | struct spk_header *header; |
| 229 | struct spk_prog_info *pi; |
| 230 | Elf32_Phdr *ph; |
| 231 | Elf32_Sym *sym; |
| 232 | char *name; |
| 233 | int snlen; |
| 234 | int nphs; |
| 235 | int psize; |
| 236 | int imgsize; |
| 237 | int i; |
| 238 | int j; |
| 239 | uint32_t offset; |
| 240 | uint32_t sp; |
| 241 | |
| 242 | snlen = alignup(strlen(savename) + 1, 16); |
| 243 | |
| 244 | nphs = 0; |
| 245 | psize = 0; |
| 246 | for (i = 0, ph = elf->phdr; i < elf->ehdr->e_phnum; i++, ph++) |
| 247 | { |
| 248 | if (ph->p_type != PT_LOAD || ph->p_memsz == 0) |
| 249 | { |
| 250 | continue; |
| 251 | } |
| 252 | |
| 253 | nphs++; |
| 254 | psize += alignup(ph->p_filesz, 16); |
| 255 | } |
| 256 | |
| 257 | imgsize = sizeof(*header) + snlen + (nphs * 16) + psize; |
| 258 | |
| 259 | img = malloc(imgsize + 32); |
| 260 | if (!img) |
| 261 | { |
| 262 | return NULL; |
| 263 | } |
| 264 | |
| 265 | *image_size = imgsize; |
| 266 | sym = elf->symtab; |
| 267 | name = elf->string; |
| 268 | sp = 0; |
| 269 | |
| 270 | for (j = 0; j < elf->nsyms; j++, sym++) |
| 271 | { |
| 272 | if (!strcmp("__stack", name + sym->st_name)) |
| 273 | { |
| 274 | sp = sym->st_value; |
| 275 | } |
| 276 | } |
| 277 | |
| 278 | memset(img, 0, imgsize); |
| 279 | |
| 280 | header = (struct spk_header *)img; |
| 281 | header->magic[0] = 0xef; |