void PackLinuxElf32x86interp::pack3(OutputFile *fo, Filter &/*ft*/)
{
unsigned base = getbase(phdri, ehdri.e_phnum);
unsigned sz = PAGE_MASK & (~PAGE_MASK + elfout.phdr[0].p_filesz);
if (base < (0x11000 + sz)) {
base = 0x11000 + sz;
}
if (opt->o_unix.make_ptinterp) {
base = 0x10000;
}
elfout.phdr[0].p_paddr = elfout.phdr[0].p_vaddr = base - sz;
if (opt->o_unix.make_ptinterp) {
initLoader(stub_i386_linux_elf_interp_entry, sizeof(stub_i386_linux_elf_interp_entry));
linker->addSection("FOLDEXEC", stub_i386_linux_elf_interp_fold, sizeof(stub_i386_linux_elf_interp_fold), 0);
addLoader("LXPTI000", NULL);
addLoader("LXPTI040", NULL);
ph.method = M_NRV2B_LE32;
addLoader(getDecompressorSections(), NULL);
addLoader("LXPTI090", NULL);
addLoader("LXPTI041", NULL);
ph.method = M_NRV2D_LE32;
addLoader(getDecompressorSections(), NULL);
addLoader("LXPTI090", NULL);
addLoader("LXPTI042", NULL);
ph.method = M_NRV2E_LE32;
addLoader(getDecompressorSections(), NULL);
addLoader("LXPTI090", NULL);
//addLoader("LXPTI043", NULL);
//ph.method = M_CL1B_LE32; addLoader(getDecompressorSections(), NULL);
//addLoader("LXPTI090", NULL);
addLoader("LXPTI091", NULL);
addLoader("LXPTI140", NULL);
addLoader("LXUNF002,LXUNF008,LXUNF010", NULL);
addFilter32(0x46);
addLoader("LXUNF042,LXUNF035", NULL);
addLoader("LXUNF002,LXUNF008,LXUNF010", NULL);
addFilter32(0x49);
addLoader("LXUNF042,LXUNF035", NULL);
addLoader("LXPTI200", NULL);
addLoader("FOLDEXEC", NULL);
upx_byte const *p = getLoader();
lsize = getLoaderSize();
updateLoader(fo);
fo->write(p, lsize);
elfout.phdr[0].p_filesz = fo->getBytesWritten();
}
else {
updateLoader(fo);
}
}
void PackTmt::buildLoader(const Filter *ft)
{
// prepare loader
initLoader(stub_i386_dos32_tmt, sizeof(stub_i386_dos32_tmt));
addLoader("IDENTSTR,TMTMAIN1",
ph.first_offset_found == 1 ? "TMTMAIN1A" : "",
"TMTMAIN1B",
ft->id ? "TMTCALT1" : "",
"TMTMAIN2,UPX1HEAD,TMTCUTPO",
NULL);
// fake alignment for the start of the decompressor
linker->defineSymbol("TMTCUTPO", 0x1000);
addLoader(getDecompressorSections(), "TMTMAIN5", NULL);
if (ft->id)
{
assert(ft->calls > 0);
addLoader("TMTCALT2",NULL);
addFilter32(ft->id);
}
addLoader("TMTRELOC,RELOC320",
big_relocs ? "REL32BIG" : "",
"RELOC32J,TMTJUMP1",
NULL
);
}
void PackWcle::buildLoader(const Filter *ft)
{
// prepare loader
initLoader(stub_i386_dos32_watcom_le, sizeof(stub_i386_dos32_watcom_le));
addLoader("IDENTSTR,WCLEMAIN",
ph.first_offset_found == 1 ? "WCLEMAIN02" : "",
"WCLEMAIN03,UPX1HEAD,WCLECUTP", NULL);
// fake alignment for the start of the decompressor
linker->defineSymbol("WCLECUTP", 0x1000);
addLoader(getDecompressorSections(), "WCLEMAI2", NULL);
if (ft->id)
{
assert(ft->calls > 0);
addLoader(ft->addvalue ? "WCCTTPOS" : "WCCTTNUL", NULL);
addFilter32(ft->id);
}
#if 1
// FIXME: if (has_relocation)
{
addLoader("WCRELOC1,RELOC320",
big_relocs ? "REL32BIG" : "",
"RELOC32J",
NULL
);
}
#endif
addLoader(has_extra_code ? "WCRELSEL" : "",
"WCLEMAI4",
NULL
);
}
void PackVmlinuzI386::buildLoader(const Filter *ft)
{
// prepare loader
initLoader(stub_i386_linux_kernel_vmlinuz, sizeof(stub_i386_linux_kernel_vmlinuz));
addLoader("LINUZ000",
ph.first_offset_found == 1 ? "LINUZ010" : "",
ft->id ? "LZCALLT1" : "",
"LZIMAGE0",
getDecompressorSections(),
NULL
);
if (ft->id)
{
assert(ft->calls > 0);
addLoader("LZCALLT9", NULL);
addFilter32(ft->id);
}
addLoader("LINUZ990,IDENTSTR,UPX1HEAD", NULL);
}
void PackBvmlinuzI386::buildLoader(const Filter *ft)
{
// prepare loader
initLoader(stub_i386_linux_kernel_vmlinuz, sizeof(stub_i386_linux_kernel_vmlinuz));
if (0!=page_offset) { // relocatable kernel
assert(0==ft->id || 0x40==(0xf0 & ft->id)); // others assume fixed buffer address
addLoader("LINUZ000,LINUZ001,LINUZVGA,LINUZ101,LINUZ110",
((0!=config_physical_align) ? "LINUZ120" : "LINUZ130"),
"LINUZ140,LZCUTPOI,LINUZ141",
(ft->id ? "LINUZ145" : ""),
(ph.first_offset_found == 1 ? "LINUZ010" : ""),
NULL);
}
else {
addLoader("LINUZ000,LINUZ001,LINUZVGA,LINUZ005",
ph.first_offset_found == 1 ? "LINUZ010" : "",
(0x40==(0xf0 & ft->id)) ? "LZCKLLT1" : (ft->id ? "LZCALLT1" : ""),
"LBZIMAGE,IDENTSTR",
"+40", // align the stuff to 4 byte boundary
"UPX1HEAD", // 32 byte
"LZCUTPOI",
NULL);
// fake alignment for the start of the decompressor
//linker->defineSymbol("LZCUTPOI", 0x1000);
}
addLoader(getDecompressorSections(), NULL);
if (ft->id)
{
assert(ft->calls > 0);
if (0x40==(0xf0 & ft->id)) {
addLoader("LZCKLLT9", NULL);
}
else {
addLoader("LZCALLT9", NULL);
}
addFilter32(ft->id);
}
if (0!=page_offset) {
addLoader("LINUZ150,IDENTSTR,+40,UPX1HEAD", NULL);
unsigned const l_len = getLoaderSize();
unsigned const c_len = ALIGN_UP(ph.c_len, 4u);
unsigned const e_len = getLoaderSectionStart("LINUZ141") -
getLoaderSectionStart("LINUZ110");
linker->defineSymbol("compressed_length", c_len);
linker->defineSymbol("load_physical_address", physical_start); // FIXME
if (0!=config_physical_align) {
linker->defineSymbol("neg_config_physical_align", 0u - config_physical_align);
}
linker->defineSymbol("neg_length_mov", 0u - ALIGN_UP(c_len + l_len, 4u));
linker->defineSymbol("neg_page_offset", 0u - page_offset);
//linker->defineSymbol("physical_start", physical_start);
linker->defineSymbol("unc_length", ph.u_len);
linker->defineSymbol("dec_offset", ph.overlap_overhead + e_len);
linker->defineSymbol("unc_offset", ph.overlap_overhead + ph.u_len - c_len);
}
else {
addLoader("LINUZ990", NULL);
}
}