AIX 5.3 , gensyms command, translate 32 bit addr to 64 bit addr

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LEARN ABOUT FREEBSD

dladdr

DLADDR(3)						   BSD Library Functions Manual 						 DLADDR(3)

NAME

     dladdr -- find the shared object containing a given address

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <dlfcn.h>

     int
     dladdr(const void *addr, Dl_info *info);

DESCRIPTION

     The dladdr() function queries the dynamic linker for information about the shared object containing the address addr.  The information is
     returned in the structure specified by info.  The structure contains at least the following members:

     const char *dli_fname     The pathname of the shared object containing the address.

     void *dli_fbase	       The base address at which the shared object is mapped into the address space of the calling process.

     const char *dli_sname     The name of the nearest run-time symbol with a value less than or equal to addr.  When possible, the symbol name is
			       returned as it would appear in C source code.

			       If no symbol with a suitable value is found, both this field and dli_saddr are set to NULL.

     void *dli_saddr	       The value of the symbol returned in dli_sname.

     The dladdr() function is available only in dynamically linked programs.

ERRORS

     If a mapped shared object containing addr cannot be found, dladdr() returns 0.  In that case, a message detailing the failure can be
     retrieved by calling dlerror().

     On success, a non-zero value is returned.

SEE ALSO

     rtld(1), dlopen(3)

HISTORY

     The dladdr() function first appeared in the Solaris operating system.

BUGS

     This implementation is bug-compatible with the Solaris implementation.  In particular, the following bugs are present:

     o	 If addr lies in the main executable rather than in a shared library, the pathname returned in dli_fname may not be correct.  The pathname
	 is taken directly from argv[0] of the calling process.  When executing a program specified by its full pathname, most shells set argv[0]
	 to the pathname.  But this is not required of shells or guaranteed by the operating system.

     o	 If addr is of the form &func, where func is a global function, its value may be an unpleasant surprise.  In dynamically linked programs,
	 the address of a global function is considered to point to its program linkage table entry, rather than to the entry point of the func-
	 tion itself.  This causes most global functions to appear to be defined within the main executable, rather than in the shared libraries
	 where the actual code resides.

     o	 Returning 0 as an indication of failure goes against long-standing Unix tradition.

BSD
								 February 5, 1998							       BSD

AIX