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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/packer.cpp
+24 -21
View File
@@ -923,17 +923,8 @@ unsigned Packer::unoptimizeReloc32(upx_byte **in, upx_byte *image,
// loader util
**************************************************************************/
void Packer::initLoader(const void *pdata, int plen, int pinfo)
char const *Packer::identstr(unsigned &size)
{
if (pinfo < 0)
pinfo = ~3 & (3 + get_le16(pdata, plen - 2));
delete linker;
if (getFormat() < 128)
linker = new Linker(pdata, plen, pinfo); // little endian
else
linker = new BeLinker(pdata, plen, pinfo); // big endian
static const char identbig[] =
"\n\0"
"$Info: This file is packed with the UPX executable packer http://upx.tsx.org $"
@@ -946,10 +937,30 @@ void Packer::initLoader(const void *pdata, int plen, int pinfo)
"$Id: UPX (C) 1996-2001 the UPX Team. All Rights Reserved. http://upx.tsx.org $"
"\n";
if (opt->small)
linker->addSection("IDENTSTR",identsmall,sizeof(identsmall));
if (opt->small) {
size = sizeof(identsmall);
return identsmall;
}
else {
size = sizeof(identbig);
return identbig;
}
}
void Packer::initLoader(const void *pdata, int plen, int pinfo)
{
if (pinfo < 0)
pinfo = ~3 & (3 + get_le16(pdata, plen - 2));
delete linker;
if (getFormat() < 128)
linker = new Linker(pdata, plen, pinfo); // little endian
else
linker->addSection("IDENTSTR",identbig,sizeof(identbig));
linker = new BeLinker(pdata, plen, pinfo); // big endian
unsigned size;
char const *const ident = identstr(size);
linker->addSection("IDENTSTR",ident,size);
}
@@ -1453,9 +1464,6 @@ void Packer::compressWithFilters(Filter *parm_ft,
// filter
optimizeFilter(&ft, ibuf + filter_off, filter_len);
unsigned char *const save = new unsigned char[filter_len];
memcpy(save, ibuf + filter_off, filter_len);
bool success = ft.filter(ibuf + filter_off, filter_len);
if (ft.id != 0 && ft.calls == 0)
{
@@ -1529,11 +1537,6 @@ void Packer::compressWithFilters(Filter *parm_ft,
}
// restore ibuf[] - unfilter with verify
ft.unfilter(ibuf + filter_off, filter_len, true);
for (unsigned k = 0; k < filter_len; ++k) {
if ((ibuf + filter_off)[k] != save[k]) {
printf("mismatch at %d\n", k);
}
}
//
if (strategy < 0)
break;