void PackLinuxElf32x86interp::pack1(OutputFile *fo, Filter &)
{
fi->seek(0, SEEK_SET);
fi->readx(&ehdri, sizeof(ehdri));
assert(ehdri.e_phoff == sizeof(Elf32_Ehdr)); // checked by canPack()
sz_phdrs = ehdri.e_phnum * ehdri.e_phentsize;
phdri = new Elf32_Phdr[(unsigned)ehdri.e_phnum];
fi->seek(ehdri.e_phoff, SEEK_SET);
fi->readx(phdri, sz_phdrs);
#define E Elf32_Ehdr
cprElfHdr3 h3;
memset(&h3, 0, sizeof(h3));
memcpy(h3.ehdr.e_ident, "\177ELF", 4);
h3.ehdr.e_ident[E::EI_CLASS] = E::ELFCLASS32;
h3.ehdr.e_ident[E::EI_DATA] = E::ELFDATA2LSB;
h3.ehdr.e_ident[E::EI_VERSION] = E::EV_CURRENT;
h3.ehdr.e_ident[E::EI_OSABI] = E::ELFOSABI_LINUX;
h3.ehdr.e_ident[E::EI_ABIVERSION] = E::EV_CURRENT;
h3.ehdr.e_type = E::ET_EXEC;
h3.ehdr.e_machine = E::EM_386;
h3.ehdr.e_version = 1;
h3.ehdr.e_phoff = sizeof(Elf32_Ehdr);
h3.ehdr.e_ehsize = sizeof(Elf32_Ehdr);
h3.ehdr.e_phentsize = sizeof(Elf32_Phdr);
h3.ehdr.e_phnum = 3;
h3.phdr[0].p_type = PT_LOAD;
h3.phdr[0].p_flags = Elf32_Phdr::PF_X | Elf32_Phdr::PF_R;
h3.phdr[0].p_align = 0x1000;
h3.phdr[1].p_type = PT_LOAD;
h3.phdr[1].p_flags = Elf32_Phdr::PF_W | Elf32_Phdr::PF_R;
h3.phdr[1].p_align = 1;
h3.phdr[2].p_type = PT_INTERP;
h3.phdr[2].p_offset = (char *)&h3.phdr[2].p_vaddr - (char *)&h3;
memcpy(&h3.phdr[2].p_vaddr, "/upxrun", h3.phdr[2].p_filesz = 8);
h3.phdr[2].p_align = 1;
if (opt->o_unix.make_ptinterp) { // unusual "once per release"
*(cprElfHdr3 *)&elfout = h3;
elfout.ehdr.e_phnum = 1;
fo->write(&elfout, elfout.ehdr.e_ehsize + elfout.ehdr.e_phentsize);
}
else { // usual case
generateElfHdr(fo, &h3, getbrk(phdri, ehdri.e_phnum));
}
#undef E
}
t_malloc extend_block(t_malloc prev, size_t size)
{
t_malloc tmp;
if ((SIZE + size) <= getfreespace() && sbrk(0) > getbrk())
tmp = sbrk(0) - getfreespace();
else
{
tmp = sbrk(0);
if ((void*)-1 == sbrk(getpagesize()))
return (NULL);
}
tmp = sbrk(0);
if ((void*)-1 == sbrk(SIZE + size))
return (NULL);
tmp->size = size;
tmp->next = NULL;
tmp->prev = prev;
tmp->ptr = tmp->data;
if (prev)
prev->next = tmp;
tmp->is_free = 0;
return (tmp);
}
