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Put upx stub loader at high end of ELF output file on linux,

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and allow for block-by-block specification of filter and parameters.
	linker.cpp linker.h mem.cpp mem.h p_elf.h
	p_lx_elf.cpp p_lx_elf.h
	p_lx_exc.cpp p_lx_exc.h
	p_lx_sh.cpp  p_lx_sh.h
	p_unix.cpp p_unix.h
	packer.cpp packer.h
	stub/fold_elf86.asm stub/fold_exec86.asm stub/fold_sh86.asm
	stub/l_lx_elf.c  stub/l_lx_elf86.asm  stub/l_lx_elf86.lds
	stub/l_lx_exec.c stub/l_lx_exec86.asm stub/l_lx_exec86.lds
	stub/l_lx_sh.c   stub/l_lx_sh86.asm   stub/l_lx_sh86.lds
	stub/linux.hh

committer: jreiser <jreiser> 981084316 +0000
This commit is contained in:
John Reiser
2001-02-02 03:25:16 +00:00
parent 9005e50049
commit 40fddf1715
28 changed files with 797 additions and 614 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/p_lx_sh.cpp
+6 -31
View File
@@ -78,17 +78,15 @@ PackLinuxI386sh::buildLoader(Filter const *ft)
// filter
optimizeFilter(&fold_ft, buf, sz_fold);
bool success = fold_ft.filter(buf + sizeof(cprElfhdr), sz_fold - sizeof(cprElfhdr));
bool success = fold_ft.filter(buf + sizeof(cprElfHdr2), sz_fold - sizeof(cprElfHdr2));
(void)success;
return buildLinuxLoader(
linux_i386sh_loader, sizeof(linux_i386sh_loader),
buf, sz_fold, ft, 0x08048000 );
buf, sz_fold, ft );
}
void PackLinuxI386sh::patchLoader()
{
}
void PackLinuxI386sh::patchLoader() { }
bool PackLinuxI386sh::getShellName(char *buf)
@@ -104,7 +102,6 @@ bool PackLinuxI386sh::getShellName(char *buf)
};
for (int j=0; 0 != shname[j]; ++j) {
if (0==strcmp(shname[j], basename)) {
o_shname += 3; // space for "-c\x00"
return super::canPack();
}
}
@@ -134,34 +131,12 @@ bool PackLinuxI386sh::canPack()
}
void PackLinuxI386sh::pack(OutputFile *fo)
void
PackLinuxI386sh::pack1(OutputFile *fo, Filter &)
{
#define PAGE_MASK (~0<<12)
opt->unix.blocksize = blocksize = file_size;
PackUnix::pack(fo);
// update loader
Elf_LE32_Ehdr *const ehdr = (Elf_LE32_Ehdr *)const_cast<upx_byte *>(getLoader());
Elf_LE32_Phdr *const phdro = (Elf_LE32_Phdr *)(1+ehdr);
off_t const totlen = fo->getBytesWritten();
phdro[0].p_filesz = totlen;
phdro[0].p_memsz = PAGE_MASK & (~PAGE_MASK + totlen);
// Try to make brk() work by faking it for exec().
unsigned const brka = 0x08048000;
phdro[1].p_offset = 0xfff&brka;
phdro[1].p_vaddr = brka;
phdro[1].p_paddr = brka;
phdro[1].p_filesz = 0;
phdro[1].p_memsz = 0;
patchLoaderChecksum();
fo->seek(0, SEEK_SET);
fo->rewrite(ehdr, sizeof(cprElfhdr));
#undef PAGE_MASK
generateElfHdr(fo, linux_i386sh_fold, 0, 0, 0x08048000);
}
/*
vi:ts=4:et
*/