cplusdemstub.cpp

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/* cplusDemStub.cpp - C++ symbol demangler stub */

/* Copyright 1998 Wind River Systems, Inc. */
#include "copyright_wrs.h"

/*
modification history
--------------------
01b,12jun98,sn   moved function symbolStartOf from cplusDem.cpp to here.
01a,10apr98,sn   written.
*/

/*
DESCRIPTION
This module seperates the interface of cplusDemangle from its implementation
in cplusDem.cpp. 

Many "show" routines such as timexShowCalls attempt to present demangled 
symbol names to the user  by calling cplusDemangle. If
C++ is not configured into vxWorks the correct behaviour
is simply to return the mangled name. We have seperated out a "stub"
of cplusDemangle from its body (_cplusDemangle) to avoid dragging in the 
entire C++ runtime with any vxWorks image that contains show routines. 

NOMANUAL
*/

/* includes */

#include "vxWorks.h"
#include "cplusLib.h"
#include "demangle.h"

/* defines */


/* typedefs */


/* globals */

char * (*cplusDemangleFunc) (char *, char *, int) = 0;

/* locals */


/* forward declarations */

/*******************************************************************************
*
* symbolStartOf - skip leading underscore
*
* RETURNS: pointer to the start of the symbol name after any compiler 
*          prepended leading underscore.
*        
*
* NOMANUAL
*/

LOCAL char *symbolStartOf (
			  char *str
			  )
{
    if (prepends_underscore && (str [0] == '_'))
        return str + 1;
    else
        return str;
}


/******************************************************************************
*
* cplusDemangle - demangle symbol
*
* This function takes a symbol (source), removes any compiler prepended 
* underscore, and then attempts to demangle it. If demangling succeeds
* the (first n chars of) the demangled string are placed in dest [] and
* a pointer to dest is returned. Otherwise a pointer to the start of
* the symbol proper (after any compiler prepended underscore) is returned.

* RETURNS:
* A pointer to a human readable version of source.
*
* NOMANUAL
*/

char * cplusDemangle
    (
    char	* source,		/* mangled name */
    char	* dest,			/* buffer for demangled copy */
    int		  n		/* maximum length of copy */
    )
    {
    source = symbolStartOf (source);
    if (cplusDemangleFunc == 0  )
	{
	return source;
	}
    else
	{
        return cplusDemangleFunc (source, dest, n);
	}
    }