mirror of
https://github.com/upx/upx
synced 2025-10-05 19:20:23 +08:00
149 lines
4.6 KiB
C++
149 lines
4.6 KiB
C++
/* p_lx_exc.h --
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This file is part of the UPX executable compressor.
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Copyright (C) 1996-2017 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 1996-2017 Laszlo Molnar
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All Rights Reserved.
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UPX and the UCL library are free software; you can redistribute them
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and/or modify them under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING.
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If not, write to the Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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Markus F.X.J. Oberhumer Laszlo Molnar
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<markus@oberhumer.com> <ezerotven+github@gmail.com>
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John F. Reiser
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<jreiser@users.sourceforge.net>
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*/
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#ifndef __UPX_P_LX_EXC_H
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#define __UPX_P_LX_EXC_H 1
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/*************************************************************************
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// linux/386 (generic "execve" format)
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**************************************************************************/
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class PackLinuxI386 : public PackUnixLe32
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{
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typedef PackUnixLe32 super;
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public:
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PackLinuxI386(InputFile *f);
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virtual void generateElfHdr(
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OutputFile *,
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void const *proto,
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unsigned const brka
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);
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virtual int getFormat() const { return UPX_F_LINUX_i386; }
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virtual const char *getName() const { return "linux.exec/i386"; }
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virtual const char *getFullName(const options_t *) const { return "i386-linux.elf.execve"; }
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virtual const int *getCompressionMethods(int method, int level) const;
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virtual const int *getFilters() const;
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virtual void buildLoader(const Filter *);
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virtual bool canPack();
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protected:
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virtual void pack1(OutputFile *, Filter &); // generate executable header
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// virtual void pack2(OutputFile *, Filter &); // append compressed data
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// virtual void pack3(OutputFile *, Filter &); // append loader
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virtual void pack4(OutputFile *, Filter &); // append PackHeader
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// loader util
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virtual Linker* newLinker() const;
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virtual int getLoaderPrefixSize() const;
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virtual void buildLinuxLoader(
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upx_byte const *const proto, // assembly-only sections
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unsigned const szproto,
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upx_byte const *const fold, // linked assembly + C section
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unsigned const szfold,
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Filter const *ft
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);
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// patch util
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virtual void patchLoader();
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virtual void patchLoaderChecksum();
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virtual void updateLoader(OutputFile *);
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// ELF util
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virtual int checkEhdr(const Elf_LE32_Ehdr *ehdr) const;
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enum {
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UPX_ELF_MAGIC = 0x5850557f // "\x7fUPX"
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};
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unsigned n_mru;
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__packed_struct(cprElfHdr1)
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Elf_LE32_Ehdr ehdr;
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Elf_LE32_Phdr phdr[1];
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l_info linfo;
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__packed_struct_end()
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__packed_struct(cprElfHdr2)
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Elf_LE32_Ehdr ehdr;
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Elf_LE32_Phdr phdr[2];
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l_info linfo;
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__packed_struct_end()
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__packed_struct(cprElfHdr3)
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Elf_LE32_Ehdr ehdr;
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Elf_LE32_Phdr phdr[3];
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l_info linfo;
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__packed_struct_end()
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cprElfHdr3 elfout;
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struct Elf32_Note {
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unsigned namesz; // 8
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unsigned descsz; // 4
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unsigned type; // 1
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char text[0x18 - 4*4]; // "OpenBSD"
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unsigned end; // 0
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} elfnote;
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unsigned char ei_osabi;
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char const *osabi_note;
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static void compileTimeAssertions() {
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COMPILE_TIME_ASSERT(sizeof(cprElfHdr1) == 52 + 1*32 + 12)
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COMPILE_TIME_ASSERT(sizeof(cprElfHdr2) == 52 + 2*32 + 12)
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COMPILE_TIME_ASSERT(sizeof(cprElfHdr3) == 52 + 3*32 + 12)
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COMPILE_TIME_ASSERT_ALIGNED1(cprElfHdr1)
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COMPILE_TIME_ASSERT_ALIGNED1(cprElfHdr2)
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COMPILE_TIME_ASSERT_ALIGNED1(cprElfHdr3)
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}
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};
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class PackBSDI386 : public PackLinuxI386
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{
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typedef PackLinuxI386 super;
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public:
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PackBSDI386(InputFile *f);
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virtual int getFormat() const { return UPX_F_BSD_i386; }
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virtual const char *getName() const { return "bsd.exec/i386"; }
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virtual const char *getFullName(const options_t *) const { return "i386-bsd.elf.execve"; }
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protected:
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virtual void pack1(OutputFile *, Filter &); // generate executable header
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virtual void buildLoader(const Filter *);
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};
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#endif /* already included */
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/* vim:set ts=4 sw=4 et: */
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