x86dis(1) [debian man page]

X86DIS(1)							     libdisasm								 X86DIS(1)

NAME

       x86dis - disassemble a bytestream of Intel x86 instructions

SYNTAX

       x86dis [-a offset|--addr=offset]
	      [-r offset len|--range=offset len]
	      [-e offset|--entry=offset]
	      [-s name|--syntax=name]
	      [-d name|--desc=name]
	      [-f file|--file=file]
	      [-o file|--out=file]
	      [-l file|--log=file]
	      [-p num|--pagesize=num]
	      [-h|-?|--help]
	      [-v|--version]

DESCRIPTION

       A command-line interface to the libdisasm disassembler library.

OPTIONS

       At least one option from the list -a, -e, -r must be given.

       -f, --file=file
	      Read input bytes from file instead of stdin

       -o, --out=file
	      Write output to file instead of stdout

       -l, --log=file
	      Log errors to file instead of stderr

       -p, --pagesize=num
	      Set page size for buffering STDIN to num (default 512K)

       -s, --syntax=name
	      Set output syntax to name, where name is one of intel
	      (Intel syntax), att (AT&T syntax), raw (libdisasm syntax)

       -d, --desc=name
	      Print a description of syntax name

       -a, --addr=offset
	      Disassemble single instruction at offset

       -e, --entry=offset
	      Disassemble forward from offset

       -r, --range=offset len
	      Disassemble len bytes starting at offset

       All  offset  and  len  parameters  are expected to follow the conventions used in strtoul(3), where hexadecimal numbers have the prefix 0x,
       octal numbers have the prefix 0, and decimal numbers have no prefix. A value of 0 for len indicates that that range extends to the  end	of
       the file.

EXAMPLES

       cat `which ls` | x86dis -s intel -e 0x00 -r 0x00 -1 -a 0xEEEE
       x86dis -e 0 -s intel < bootsect.img
       x86dis -d -s raw -f a.out -e `readelf -h a.out |
	     grep  Entry  |   awk  '{ printf( "0x%%x",	     strtonum($4) - 0x8048000 ) }` echo '55 89 e5 83 EC 08' | perl -ane 'foreach(@F){print
       pack("C",hex);}'| x86dis -e 0 -s att

NOTES

       x86dis performs no file format parsing, nor any verification that its input is in fact executable binary code. All offsets are  assumed	to
       be  from  the  start  of the file, with no load addresses applied. The intent is to provide a bytestream disassembler rather than an object
       file disassembler.

       Descriptions of the various output formats can be obtained using the -d option.

AUTHORS

       mammon_ <mammon_@users.sourceforge.net>

SEE ALSO

       bastard(1), libdisasm(7), x86_disasm(3), x86_format_insn(3), x86_init(3)

mammon_ 							       0.21								 X86DIS(1)

Check Out this Related Man Page

POSIX_FALLOCATE(3)					     Linux Programmer's Manual						POSIX_FALLOCATE(3)

NAME

       posix_fallocate - allocate file space

SYNOPSIS

       #include <fcntl.h>

       int posix_fallocate(int fd, off_t offset, off_t len);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       posix_fallocate():
	   _XOPEN_SOURCE >= 600 || _POSIX_C_SOURCE >= 200112L

DESCRIPTION

       The  function  posix_fallocate()  ensures  that	disk space is allocated for the file referred to by the descriptor fd for the bytes in the
       range starting at offset and continuing for len bytes.  After a successful call to posix_fallocate(), subsequent writes	to  bytes  in  the
       specified range are guaranteed not to fail because of lack of disk space.

       If the size of the file is less than offset+len, then the file is increased to this size; otherwise the file size is left unchanged.

RETURN VALUE

       posix_fallocate() returns zero on success, or an error number on failure.  Note that errno is not set.

ERRORS

       EBADF  fd is not a valid file descriptor, or is not opened for writing.

       EFBIG  offset+len exceeds the maximum file size.

       EINVAL offset was less than 0, or len was less than or equal to 0.

       ENODEV fd does not refer to a regular file.

       ENOSPC There is not enough space left on the device containing the file referred to by fd.

       ESPIPE fd refers to a pipe.

VERSIONS

       posix_fallocate() is available since glibc 2.1.94.

CONFORMING TO

       POSIX.1-2001.

       POSIX.1-2008  says  that  an implementation shall give the EINVAL error if len was 0, or offset was less than 0.  POSIX.1-2001 says that an
       implementation shall give the EINVAL error if len is less than 0, or offset was less than 0, and may give the error if len equals zero.

SEE ALSO

       fallocate(2), lseek(2), posix_fadvise(2)

COLOPHON

       This page is part of release 3.44 of the Linux man-pages project.  A description of the project, and information about reporting bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

GNU
								    2010-09-20							POSIX_FALLOCATE(3)

Linux and UNIX Man Pages

x86dis(1) [debian man page]

Check Out this Related Man Page