diff options
Diffstat (limited to 'elf_ops.h')
| -rw-r--r-- | elf_ops.h | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/elf_ops.h b/elf_ops.h deleted file mode 100644 index 6126565..0000000 --- a/elf_ops.h +++ /dev/null @@ -1,217 +0,0 @@ -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 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(load_symbols, SZ)(struct elfhdr *ehdr, int fd, int must_swab) -{ - struct elf_shdr *symtab, *strtab, *shdr_table = NULL; - struct elf_sym *syms = NULL; -#if (SZ == 64) - struct elf32_sym *syms32 = NULL; -#endif - 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); -#if (SZ == 64) - syms32 = qemu_mallocz(nsyms * sizeof(struct elf32_sym)); -#endif - for (i = 0; i < nsyms; i++) { - if (must_swab) - glue(bswap_sym, SZ)(&syms[i]); -#if (SZ == 64) - syms32[i].st_name = syms[i].st_name; - syms32[i].st_info = syms[i].st_info; - syms32[i].st_other = syms[i].st_other; - syms32[i].st_shndx = syms[i].st_shndx; - syms32[i].st_value = syms[i].st_value & 0xffffffff; - syms32[i].st_size = syms[i].st_size & 0xffffffff; -#endif - } - /* 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 = qemu_mallocz(sizeof(*s)); -#if (SZ == 64) - s->disas_symtab = syms32; - qemu_free(syms); -#else - s->disas_symtab = syms; -#endif - s->disas_num_syms = nsyms; - s->disas_strtab = str; - s->next = syminfos; - syminfos = s; - qemu_free(shdr_table); - return 0; - fail: -#if (SZ == 64) - qemu_free(syms32); -#endif - qemu_free(syms); - qemu_free(str); - qemu_free(shdr_table); - return -1; -} - -static int glue(load_elf, SZ)(int fd, int64_t virt_to_phys_addend, - int must_swab, uint64_t *pentry, - uint64_t *lowaddr, uint64_t *highaddr) -{ - struct elfhdr ehdr; - struct elf_phdr *phdr = NULL, *ph; - int size, i, total_size; - elf_word mem_size; - uint64_t addr, low = 0, high = 0; - uint8_t *data = NULL; - - if (read(fd, &ehdr, sizeof(ehdr)) != sizeof(ehdr)) - goto fail; - if (must_swab) { - glue(bswap_ehdr, SZ)(&ehdr); - } - - if (ELF_MACHINE != ehdr.e_machine) - goto fail; - - if (pentry) - *pentry = (uint64_t)(elf_sword)ehdr.e_entry; - - glue(load_symbols, SZ)(&ehdr, fd, must_swab); - - size = ehdr.e_phnum * sizeof(phdr[0]); - lseek(fd, ehdr.e_phoff, SEEK_SET); - phdr = qemu_mallocz(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; - /* XXX: avoid allocating */ - data = qemu_mallocz(mem_size); - if (ph->p_filesz > 0) { - if (lseek(fd, ph->p_offset, SEEK_SET) < 0) - goto fail; - if (read(fd, data, ph->p_filesz) != ph->p_filesz) - goto fail; - } - addr = ph->p_vaddr + virt_to_phys_addend; - - cpu_physical_memory_write_rom(addr, data, mem_size); - - total_size += mem_size; - if (!low || addr < low) - low = addr; - if (!high || (addr + mem_size) > high) - high = addr + mem_size; - - qemu_free(data); - data = NULL; - } - } - qemu_free(phdr); - if (lowaddr) - *lowaddr = (uint64_t)(elf_sword)low; - if (highaddr) - *highaddr = (uint64_t)(elf_sword)high; - return total_size; - fail: - qemu_free(data); - qemu_free(phdr); - return -1; -} |