conf.h

/* conf.h --

   This file is part of the UPX executable compressor.

   Copyright (C) 1996-2016 Markus Franz Xaver Johannes Oberhumer
   Copyright (C) 1996-2016 Laszlo Molnar
   All Rights Reserved.

   UPX and the UCL library are free software; you can redistribute them
   and/or modify them under the terms of the GNU General Public License as
   published by the Free Software Foundation; either version 2 of
   the License, or (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; see the file COPYING.
   If not, write to the Free Software Foundation, Inc.,
   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

   Markus F.X.J. Oberhumer              Laszlo Molnar
   <markus@oberhumer.com>               <ezerotven+github@gmail.com>
 */


#ifndef __UPX_CONF_H
#define __UPX_CONF_H 1

#include "version.h"

#if !defined(_FILE_OFFSET_BITS)
#  define _FILE_OFFSET_BITS 64
#endif


/*************************************************************************
// ACC
**************************************************************************/

#ifndef ACC_CFG_USE_NEW_STYLE_CASTS
#define ACC_CFG_USE_NEW_STYLE_CASTS 1
#endif
#include "miniacc.h"
#if !(ACC_CC_CLANG || ACC_CC_GNUC || ACC_CC_MSC)
   // other compilers may work, but we're NOT interested into supporting them
#  error "only clang and gcc are officially supported"
#endif
// UPX sanity checks for a sane compiler
#if !defined(UINT_MAX) || (UINT_MAX != 0xffffffffL)
#  error "UINT_MAX"
#endif
ACC_COMPILE_TIME_ASSERT_HEADER(sizeof(int) == 4)
ACC_COMPILE_TIME_ASSERT_HEADER((1u << 31) << 1 == 0)
ACC_COMPILE_TIME_ASSERT_HEADER(((int)(1u << 31)) >> 31 == -1) // arithmetic right shift
ACC_COMPILE_TIME_ASSERT_HEADER(CHAR_MAX == 255) // -funsigned-char
ACC_COMPILE_TIME_ASSERT_HEADER((char)(-1) > 0) // -funsigned-char

#if (ACC_CC_MSC)
#  pragma warning(error: 4319)
#endif

// FIXME - quick hack for arm-wince-gcc-3.4 (Debian pocketpc-*.deb packages)
#if 1 && (ACC_ARCH_ARM) && defined(__pe__) && !defined(__CEGCC__) && !defined(_WIN32)
#  undef HAVE_CHMOD
#  undef HAVE_CHOWN
#  undef HAVE_LSTAT
#  undef HAVE_UTIME
#endif


#define ACC_WANT_ACC_INCD_H 1
#define ACC_WANT_ACC_INCE_H 1
#define ACC_WANT_ACC_LIB_H 1
#define ACC_WANT_ACC_CXX_H 1
#include "miniacc.h"

/* intergral types */
typedef acc_int8_t      upx_int8_t;
typedef acc_uint8_t     upx_uint8_t;
typedef acc_int16_t     upx_int16_t;
typedef acc_uint16_t    upx_uint16_t;
typedef acc_int32_t     upx_int32_t;
typedef acc_uint32_t    upx_uint32_t;
typedef acc_int64_t     upx_int64_t;
typedef acc_uint64_t    upx_uint64_t;
typedef acc_uintptr_t   upx_uintptr_t;
#define UPX_INT16_C     ACC_INT16_C
#define UPX_UINT16_C    ACC_UINT16_C
#define UPX_INT32_C     ACC_INT32_C
#define UPX_UINT32_C    ACC_UINT32_C
#define UPX_INT64_C     ACC_INT64_C
#define UPX_UINT64_C    ACC_UINT64_C

typedef unsigned char   upx_byte;
#define upx_bytep       upx_byte *


/*************************************************************************
//
**************************************************************************/

#if defined(__linux__) && !defined(__unix__)
#  define __unix__ 1
#endif

// just in case
#undef _
#undef __
#undef ___
#undef NDEBUG
#undef dos
#undef linux
#undef small
#undef tos
#if defined(__DJGPP__)
#  undef sopen
#  undef __unix__
#  undef __unix
#endif

#define WITH_UCL 1
#define WITH_ZLIB 1
#if !defined(WITH_LZMA) || (WITH_LZMA+0 == 0)
#  error "WITH_LZMA is missing"
#elif (WITH_LZMA != 0x443)
#  error "invalid WITH_LZMA version"
#endif
#if defined(UPX_OFFICIAL_BUILD)
#  if !(WITH_LZMA && WITH_NRV && WITH_UCL && WITH_ZLIB)
#    error
#  endif
#endif
#if (WITH_UCL)
#  define ucl_compress_config_t REAL_ucl_compress_config_t
#  include <ucl/uclconf.h>
#  include <ucl/ucl.h>
#  if !defined(UCL_VERSION) || (UCL_VERSION < 0x010300L)
#    error "please upgrade your UCL installation"
#  endif
#  undef ucl_compress_config_t
#  undef ucl_compress_config_p
#endif


/*************************************************************************
// system includes
**************************************************************************/

// malloc debuggers
#if (WITH_VALGRIND)
#  include <valgrind/memcheck.h>
#endif
#if !defined(VALGRIND_MAKE_MEM_DEFINED)
#  define VALGRIND_MAKE_MEM_DEFINED(addr,len)   0
#endif
#if !defined(VALGRIND_MAKE_MEM_NOACCESS)
#  define VALGRIND_MAKE_MEM_NOACCESS(addr,len)  0
#endif
#if !defined(VALGRIND_MAKE_MEM_UNDEFINED)
#  define VALGRIND_MAKE_MEM_UNDEFINED(addr,len) 0
#endif


// IMPORTANT: unconditionally enable assertions
#undef NDEBUG
#include <assert.h>

// protect against integer overflows and malicious header fields
// see C 11 standard, Annex K
typedef size_t upx_rsize_t;
#define UPX_RSIZE_MAX       UPX_RSIZE_MAX_MEM
#define UPX_RSIZE_MAX_MEM   (768 * 1024 * 1024)   // DO NOT CHANGE
#define UPX_RSIZE_MAX_STR   (1024 * 1024)


/*************************************************************************
// portab
**************************************************************************/

#ifndef STDIN_FILENO
#  define STDIN_FILENO      (fileno(stdin))
#endif
#ifndef STDOUT_FILENO
#  define STDOUT_FILENO     (fileno(stdout))
#endif
#ifndef STDERR_FILENO
#  define STDERR_FILENO     (fileno(stderr))
#endif


#if !(HAVE_STRCASECMP) && (HAVE_STRICMP)
#  define strcasecmp        stricmp
#endif
#if !(HAVE_STRNCASECMP) && (HAVE_STRNICMP)
#  define strncasecmp       strnicmp
#endif


#if !defined(S_IWUSR) && defined(_S_IWUSR)
#  define S_IWUSR           _S_IWUSR
#elif !defined(S_IWUSR) && defined(_S_IWRITE)
#  define S_IWUSR           _S_IWRITE
#endif

#if !defined(S_IFMT) && defined(_S_IFMT)
#  define S_IFMT            _S_IFMT
#endif
#if !defined(S_IFREG) && defined(_S_IFREG)
#  define S_IFREG           _S_IFREG
#endif
#if !defined(S_IFDIR) && defined(_S_IFDIR)
#  define S_IFDIR           _S_IFDIR
#endif
#if !defined(S_IFCHR) && defined(_S_IFCHR)
#  define S_IFCHR           _S_IFCHR
#endif

#if !defined(S_ISREG)
#  if defined(S_IFMT) && defined(S_IFREG)
#    define S_ISREG(m)      (((m) & S_IFMT) == S_IFREG)
#  else
#    error "S_ISREG"
#  endif
#endif
#if !defined(S_ISDIR)
#  if defined(S_IFMT) && defined(S_IFDIR)
#    define S_ISDIR(m)      (((m) & S_IFMT) == S_IFDIR)
#  else
#    error "S_ISDIR"
#  endif
#endif
#if !defined(S_ISCHR)
#  if defined(S_IFMT) && defined(S_IFCHR)
#    define S_ISCHR(m)      (((m) & S_IFMT) == S_IFCHR)
#  endif
#endif


// avoid warnings about shadowing global functions
#undef index
#define basename            upx_basename
#define index               upx_index
#define outp                upx_outp

#undef PAGE_MASK
#undef PAGE_SIZE

#if !defined(O_BINARY) || (O_BINARY+0 == 0)
#  if (ACC_OS_CYGWIN || ACC_OS_DOS16 || ACC_OS_DOS32 || ACC_OS_EMX || ACC_OS_OS2 || ACC_OS_OS216 || ACC_OS_WIN16 || ACC_OS_WIN32 || ACC_OS_WIN64)
#    error "missing O_BINARY"
#  endif
#endif
#if !defined(O_BINARY)
#  define O_BINARY  0
#endif

#ifndef OPTIONS_VAR
#  define OPTIONS_VAR   "UPX"
#endif


/*************************************************************************
//
**************************************************************************/

#if (ACC_CC_MSC)
#define __packed_struct(s)      struct s {
#define __packed_struct_end()   };
#else
#define __packed_struct(s)      __acc_struct_packed(s)
#define __packed_struct_end()   __acc_struct_packed_end()
#endif

#define UNUSED(var)             ACC_UNUSED(var)
#define COMPILE_TIME_ASSERT(e)  ACC_COMPILE_TIME_ASSERT(e)

#define __COMPILE_TIME_ASSERT_ALIGNOF_SIZEOF(a,b) { \
     typedef a acc_tmp_a_t; typedef b acc_tmp_b_t; \
     __packed_struct(acc_tmp_t) acc_tmp_b_t x; acc_tmp_a_t y; acc_tmp_b_t z; __packed_struct_end() \
     COMPILE_TIME_ASSERT(sizeof(struct acc_tmp_t) == 2*sizeof(b)+sizeof(a)) \
     COMPILE_TIME_ASSERT(sizeof(((acc_tmp_t*)0)->x)+sizeof(((acc_tmp_t*)0)->y)+sizeof(((acc_tmp_t*)0)->z) == 2*sizeof(b)+sizeof(a)) \
   }
#if defined(__acc_alignof)
#  define __COMPILE_TIME_ASSERT_ALIGNOF(a,b) \
     __COMPILE_TIME_ASSERT_ALIGNOF_SIZEOF(a,b) \
     COMPILE_TIME_ASSERT(__acc_alignof(a) == sizeof(b))
#else
#  define __COMPILE_TIME_ASSERT_ALIGNOF(a,b) \
     __COMPILE_TIME_ASSERT_ALIGNOF_SIZEOF(a,b)
#endif
#define COMPILE_TIME_ASSERT_ALIGNED1(a)     __COMPILE_TIME_ASSERT_ALIGNOF(a,char)

#define TABLESIZE(table)    ((sizeof(table)/sizeof((table)[0])))


template <class T>
inline T ALIGN_DOWN(const T& a, const T& b) { T r; r = (a / b) * b; return r; }
template <class T>
inline T ALIGN_UP  (const T& a, const T& b) { T r; r = ((a + b - 1) / b) * b; return r; }
template <class T>
inline T ALIGN_GAP (const T& a, const T& b) { T r; r = ALIGN_UP(a, b) - a; return r; }

template <class T>
inline const T& UPX_MAX(const T& a, const T& b) { if (a < b) return b; return a; }
template <class T>
inline const T& UPX_MIN(const T& a, const T& b) { if (a < b) return a; return b; }


// An Array allocates memory on the heap, but automatically
// gets destructed when leaving scope or on exceptions.
#define Array(type, var, size) \
    MemBuffer var ## _membuf(mem_size(sizeof(type), size)); \
    type * const var = ACC_STATIC_CAST(type *, var ## _membuf.getVoidPtr())

#define ByteArray(var, size)    Array(unsigned char, var, size)

class noncopyable
{
protected:
    inline noncopyable() {}
    inline ~noncopyable() {}
private:
    noncopyable(const noncopyable &); // undefined
    const noncopyable& operator=(const noncopyable &); // undefined
};


/*************************************************************************
// constants
**************************************************************************/

/* exit codes of this program: 0 ok, 1 error, 2 warning */
#define EXIT_OK         0
#define EXIT_ERROR      1
#define EXIT_WARN       2

#define EXIT_USAGE      1
#define EXIT_FILE_READ  1
#define EXIT_FILE_WRITE 1
#define EXIT_MEMORY     1
#define EXIT_CHECKSUM   1
#define EXIT_INIT       1
#define EXIT_INTERNAL   1


// magic constants for patching
#define UPX_MAGIC_LE32          0x21585055      /* "UPX!" */
#define UPX_MAGIC2_LE32         0xD5D0D8A1
#define UPX_MAGIC3_LE32         0x21464C45      /* "ELF!" */
#define UPX_MAGIC4_LE32         0xB5A496F5      /* magic for hajime */


// upx_compress() error codes
#define UPX_E_OK                    (0)
#define UPX_E_ERROR                 (-1)
#define UPX_E_OUT_OF_MEMORY         (-2)
#define UPX_E_NOT_COMPRESSIBLE      (-3)
#define UPX_E_INPUT_OVERRUN         (-4)
#define UPX_E_OUTPUT_OVERRUN        (-5)
#define UPX_E_LOOKBEHIND_OVERRUN    (-6)
#define UPX_E_EOF_NOT_FOUND         (-7)
#define UPX_E_INPUT_NOT_CONSUMED    (-8)
#define UPX_E_NOT_YET_IMPLEMENTED   (-9)
#define UPX_E_INVALID_ARGUMENT      (-10)


// Executable formats. Note: big endian types are >= 128.
#define UPX_F_DOS_COM           1
#define UPX_F_DOS_SYS           2
#define UPX_F_DOS_EXE           3
#define UPX_F_DJGPP2_COFF       4
#define UPX_F_WATCOM_LE         5
#define UPX_F_VXD_LE            6
#define UPX_F_DOS_EXEH          7               /* OBSOLETE */
#define UPX_F_TMT_ADAM          8
#define UPX_F_WIN32_PE          9
#define UPX_F_LINUX_i386        10
#define UPX_F_WIN16_NE          11
#define UPX_F_LINUX_ELF_i386    12
#define UPX_F_LINUX_SEP_i386    13
#define UPX_F_LINUX_SH_i386     14
#define UPX_F_VMLINUZ_i386      15
#define UPX_F_BVMLINUZ_i386     16
#define UPX_F_ELKS_8086         17
#define UPX_F_PS1_EXE           18
#define UPX_F_VMLINUX_i386      19
#define UPX_F_LINUX_ELFI_i386   20
#define UPX_F_WINCE_ARM_PE      21
#define UPX_F_LINUX_ELF64_AMD   22
#define UPX_F_LINUX_ELF32_ARMEL 23
#define UPX_F_BSD_i386          24
#define UPX_F_BSD_ELF_i386      25
#define UPX_F_BSD_SH_i386       26

#define UPX_F_VMLINUX_AMD64     27
#define UPX_F_VMLINUX_ARMEL     28
#define UPX_F_MACH_i386         29
#define UPX_F_LINUX_ELF32_MIPSEL 30
#define UPX_F_VMLINUZ_ARMEL     31
#define UPX_F_MACH_ARMEL        32

#define UPX_F_DYLIB_i386        33
#define UPX_F_MACH_AMD64        34
#define UPX_F_DYLIB_AMD64       35

#define UPX_F_WIN64_PEP         36

#define UPX_F_MACH_ARM64EL      37

#define UPX_F_MACH_PPC64LE      38
#define UPX_F_LINUX_ELFPPC64LE  39
#define UPX_F_VMLINUX_PPC64LE   40
#define UPX_F_DYLIB_PPC64LE     41

#define UPX_F_PLAIN_TEXT        127             // FIXME: what is this ??

#define UPX_F_ATARI_TOS         129
#define UPX_F_SOLARIS_SPARC     130
#define UPX_F_MACH_PPC32        131
#define UPX_F_LINUX_ELFPPC32    132
#define UPX_F_LINUX_ELF32_ARMEB 133
#define UPX_F_MACH_FAT          134
#define UPX_F_VMLINUX_ARMEB     135
#define UPX_F_VMLINUX_PPC32     136
#define UPX_F_LINUX_ELF32_MIPSEB 137
#define UPX_F_DYLIB_PPC32       138


// compression methods
#define M_ALL           (-1)
#define M_END           (-2)
#define M_NONE          (-3)
#define M_SKIP          (-4)
#define M_ULTRA_BRUTE   (-5)
// compression methods - DO NOT CHANGE
#define M_NRV2B_LE32    2
#define M_NRV2B_8       3
#define M_NRV2B_LE16    4
#define M_NRV2D_LE32    5
#define M_NRV2D_8       6
#define M_NRV2D_LE16    7
#define M_NRV2E_LE32    8
#define M_NRV2E_8       9
#define M_NRV2E_LE16    10
//#define M_CL1B_LE32     11
//#define M_CL1B_8        12
//#define M_CL1B_LE16     13
#define M_LZMA          14
#define M_DEFLATE       15      /* zlib */

#define M_IS_NRV2B(x)   ((x) >= M_NRV2B_LE32 && (x) <= M_NRV2B_LE16)
#define M_IS_NRV2D(x)   ((x) >= M_NRV2D_LE32 && (x) <= M_NRV2D_LE16)
#define M_IS_NRV2E(x)   ((x) >= M_NRV2E_LE32 && (x) <= M_NRV2E_LE16)
//#define M_IS_CL1B(x)    ((x) >= M_CL1B_LE32  && (x) <= M_CL1B_LE16)
#define M_IS_LZMA(x)    (((x) & 255) == M_LZMA)
#define M_IS_DEFLATE(x) ((x) == M_DEFLATE)


// filters
#define FT_END          (-1)
#define FT_NONE         (-2)
#define FT_SKIP         (-3)
#define FT_ULTRA_BRUTE  (-4)


/*************************************************************************
// compression - callback_t
**************************************************************************/

struct upx_callback_t;
typedef upx_callback_t *upx_callback_p;
typedef void (__acc_cdecl *upx_progress_func_t)
    (upx_callback_p, unsigned, unsigned);

struct upx_callback_t
{
    upx_progress_func_t nprogress;
    void *user;

    void reset() { memset(this, 0, sizeof(*this)); }
};


/*************************************************************************
// compression - config_t
**************************************************************************/

template <class T, T default_value, T min_value, T max_value>
struct OptVar
{
    typedef T value_type;
    static const T default_value_c = default_value;
    static const T min_value_c = min_value;
    static const T max_value_c = max_value;

    void assertValue() const {
        // info: this generates annoying warnings "unsigned >= 0 is always true"
        //assert(v >= min_value_c);
        assert(v == min_value_c || v >= min_value_c + 1);
        assert(v <= max_value_c);
    }

    OptVar() : v(default_value), is_set(0) { }
    OptVar& operator= (const T other) {
        v = other; is_set += 1;
        assertValue();
        return *this;
    }

    void reset() { v = default_value; is_set = 0; }
    operator T () const { return v; }

    T v;
    unsigned is_set;
};


// optional assignments
template <class T, T a, T b, T c>
inline void oassign(OptVar<T,a,b,c> &self, const OptVar<T,a,b,c> &other) {
    if (other.is_set) { self.v = other.v; self.is_set += 1; }
}
template <class T, T a, T b, T c>
inline void oassign(unsigned &v, const OptVar<T,a,b,c> &other) {
    if (other.is_set) { v = other.v; }
}


struct lzma_compress_config_t
{
    typedef OptVar<unsigned,  2u, 0u,   4u> pos_bits_t;             // pb
    typedef OptVar<unsigned,  0u, 0u,   4u> lit_pos_bits_t;         // lp
    typedef OptVar<unsigned,  3u, 0u,   8u> lit_context_bits_t;     // lc
    typedef OptVar<unsigned, (1u<<22), 1u, (1u<<30) > dict_size_t;
    typedef OptVar<unsigned, 64u, 5u, 273u> num_fast_bytes_t;

    pos_bits_t          pos_bits;           // pb
    lit_pos_bits_t      lit_pos_bits;       // lp
    lit_context_bits_t  lit_context_bits;   // lc
    dict_size_t         dict_size;
    unsigned            fast_mode;
    num_fast_bytes_t    num_fast_bytes;
    unsigned            match_finder_cycles;

    unsigned            max_num_probs;

    void reset();
};


struct ucl_compress_config_t : public REAL_ucl_compress_config_t
{
    void reset() { memset(this, 0xff, sizeof(*this)); }
};


struct zlib_compress_config_t
{
    typedef OptVar<unsigned,  8u, 1u,   9u> mem_level_t;            // ml
    typedef OptVar<unsigned, 15u, 9u,  15u> window_bits_t;          // wb
    typedef OptVar<unsigned,  0u, 0u,   4u> strategy_t;             // st

    mem_level_t         mem_level;          // ml
    window_bits_t       window_bits;        // wb
    strategy_t          strategy;           // st

    void reset();
};


struct upx_compress_config_t
{
    lzma_compress_config_t  conf_lzma;
    ucl_compress_config_t   conf_ucl;
    zlib_compress_config_t  conf_zlib;
    void reset() { conf_lzma.reset(); conf_ucl.reset(); conf_zlib.reset(); }
};

#define NULL_cconf  ((upx_compress_config_t *) NULL)


/*************************************************************************
// compression - result_t
**************************************************************************/

struct lzma_compress_result_t
{
    unsigned pos_bits;              // pb
    unsigned lit_pos_bits;          // lp
    unsigned lit_context_bits;      // lc
    unsigned dict_size;
    unsigned fast_mode;
    unsigned num_fast_bytes;
    unsigned match_finder_cycles;
    unsigned num_probs;             // (computed result)

    void reset() { memset(this, 0, sizeof(*this)); }
};


struct ucl_compress_result_t
{
    ucl_uint result[16];

    void reset() { memset(this, 0, sizeof(*this)); }
};


struct zlib_compress_result_t
{
    unsigned dummy;

    void reset() { memset(this, 0, sizeof(*this)); }
};


struct upx_compress_result_t
{
    // debug
    int method, level;
    unsigned u_len, c_len;

    lzma_compress_result_t  result_lzma;
    ucl_compress_result_t   result_ucl;
    zlib_compress_result_t  result_zlib;

    void reset() {
        memset(this, 0, sizeof(*this));
        result_lzma.reset(); result_ucl.reset(); result_zlib.reset();
    }
};


/*************************************************************************
// globals
**************************************************************************/

#include "snprintf.h"   // must get included first!
#include "stdcxx.h"
#include "options.h"
#include "except.h"
#include "bele.h"
#include "util.h"
#include "console.h"


// classes
class ElfLinker;
typedef ElfLinker Linker;


// main.cpp
extern const char *progname;
bool set_exit_code(int ec);
#if (ACC_CC_CLANG || ACC_CC_GNUC || ACC_CC_LLVM || ACC_CC_PATHSCALE)
void e_exit(int ec) __attribute__((__noreturn__));
#else
void e_exit(int ec);
#endif


// msg.cpp
void printSetNl(int need_nl);
void printClearLine(FILE *f = NULL);
void printErr(const char *iname, const Throwable *e);
void printUnhandledException(const char *iname, const std::exception *e);
#if (ACC_CC_CLANG || ACC_CC_GNUC || ACC_CC_LLVM || ACC_CC_PATHSCALE)
void __acc_cdecl_va printErr(const char *iname, const char *format, ...)
        __attribute__((__format__(__printf__,2,3)));
void __acc_cdecl_va printWarn(const char *iname, const char *format, ...)
        __attribute__((__format__(__printf__,2,3)));
#else
void __acc_cdecl_va printErr(const char *iname, const char *format, ...);
void __acc_cdecl_va printWarn(const char *iname, const char *format, ...);
#endif

#if (ACC_CC_CLANG || ACC_CC_GNUC || ACC_CC_LLVM || ACC_CC_PATHSCALE)
void __acc_cdecl_va infoWarning(const char *format, ...)
        __attribute__((__format__(__printf__,1,2)));
void __acc_cdecl_va infoHeader(const char *format, ...)
        __attribute__((__format__(__printf__,1,2)));
void __acc_cdecl_va info(const char *format, ...)
        __attribute__((__format__(__printf__,1,2)));
#else
void __acc_cdecl_va infoWarning(const char *format, ...);
void __acc_cdecl_va infoHeader(const char *format, ...);
void __acc_cdecl_va info(const char *format, ...);
#endif
void infoHeader();
void infoWriting(const char *what, long size);


// work.cpp
void do_one_file(const char *iname, char *oname);
void do_files(int i, int argc, char *argv[]);


// help.cpp
extern const char gitrev[];
void show_head(void);
void show_help(int verbose=0);
void show_license(void);
void show_usage(void);
void show_version(int);


// compress.cpp
unsigned upx_adler32(const void *buf, unsigned len, unsigned adler=1);
unsigned upx_crc32(const void *buf, unsigned len, unsigned crc=0);

int upx_compress           ( const upx_bytep src, unsigned  src_len,
                                   upx_bytep dst, unsigned* dst_len,
                                   upx_callback_p cb,
                                   int method, int level,
                             const upx_compress_config_t *cconf,
                                   upx_compress_result_t *cresult );
int upx_decompress         ( const upx_bytep src, unsigned  src_len,
                                   upx_bytep dst, unsigned* dst_len,
                                   int method,
                             const upx_compress_result_t *cresult );
int upx_test_overlap       ( const upx_bytep buf,
                             const upx_bytep tbuf,
                                   unsigned  src_off, unsigned src_len,
                                   unsigned* dst_len,
                                   int method,
                             const upx_compress_result_t *cresult );


#if (ACC_OS_CYGWIN || ACC_OS_DOS16 || ACC_OS_DOS32 || ACC_OS_EMX || ACC_OS_OS2 || ACC_OS_OS216 || ACC_OS_WIN16 || ACC_OS_WIN32 || ACC_OS_WIN64)
#  if defined(INVALID_HANDLE_VALUE) || defined(MAKEWORD) || defined(RT_CURSOR)
#    error "something pulled in <windows.h>"
#  endif
#endif


#endif /* already included */

/* vim:set ts=4 sw=4 et: */