diff -r ffa851df0825 -r 2fb8b9db1c86 symbian-qemu-0.9.1-12/qemu-symbian-svp/elf_ops.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/symbian-qemu-0.9.1-12/qemu-symbian-svp/elf_ops.h Fri Jul 31 15:01:17 2009 +0100 @@ -0,0 +1,258 @@ +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;ist_value < sym->st_value) { + result = -1; + } else if (key->st_value > sym->st_value + sym->st_size) { + result = 1; + } + return result; +} + +static const char *glue(lookup_symbol, SZ)(struct syminfo *s, target_ulong orig_addr) +{ + struct elf_sym *syms = glue(s->disas_symtab.elf, SZ); + struct elf_sym key; + struct elf_sym *sym; + + key.st_value = orig_addr; + + sym = bsearch(&key, syms, s->disas_num_syms, sizeof(*syms), glue(symfind, SZ)); + if (sym != 0) { + 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) +{ + 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 defined(TARGET_ARM) || defined (TARGET_MIPS) + /* The bottom address bit marks a Thumb or MIPS16 symbol. */ + syms[i].st_value &= ~(target_ulong)1; +#endif + i++; + } + syms = qemu_realloc(syms, nsyms * sizeof(*syms)); + + qsort(syms, nsyms, sizeof(*syms), glue(symcmp, SZ)); + + /* 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)); + 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; + qemu_free(shdr_table); + return 0; + fail: + qemu_free(syms); + qemu_free(str); + qemu_free(shdr_table); + return -1; +} + +static int glue(load_elf, SZ)(int fd, int64_t address_offset, + 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; + } + /* address_offset is hack for kernel images that are + linked at the wrong physical address. */ + addr = ph->p_paddr + address_offset; + + 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; +}