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Top Forums Programming determining the IP of a function Post 302487784 by Corona688 on Thursday 13th of January 2011 02:16:48 PM
Old 01-13-2011
"instruction pointer" is a hardware register and doesn't make much sense. I think you mean the function pointer? Just the function name without the parameters gives you the pointer.

Code:
#include <stdio.h>

int main(void)
{
    printf("pointer to printf is: %p\n", printf);
}

Code:
$ ./a.out
pointer to printf is 0x8048304
$

You cannot take a pointer to main in C++ however, it's special. Some C compilers will let you though.

---------- Post updated at 01:16 PM ---------- Previous update was at 01:05 PM ----------

...and for class members, you can take a pointer like:

Code:
#include <stdio.h>

class asdf
{
public:
    void member(void)
    {
    }
};

int main(void)
{
        printf("pointer to asdf::member is %p\n", &asdf::member);
        return(0);
}

 

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papi_native_avail(1)						       PAPI						      papi_native_avail(1)

NAME
papi_native_avail - papi_native_avail utility. file native_avail.c NAME
papi_native_avail - provides detailed information for PAPI native events. Synopsis Description papi_native_avail is a PAPI utility program that reports information about the native events available on the current platform. A native event is an event specific to a specific hardware platform. On many platforms, a specific native event may have a number of optional settings. In such cases, the native event and the valid settings are presented, rather than every possible combination of those settings. For each native event, a name, a description, and specific bit patterns are provided. Options o --help, -h print this help message o -d display detailed information about native events o -e EVENTNAME display detailed information about named native event o -i EVENTSTR include only event names that contain EVENTSTR o -x EVENTSTR exclude any event names that contain EVENTSTR o --noumasks suppress display of Unit Mask information Processor-specific options o --darr display events supporting Data Address Range Restriction o --dear display Data Event Address Register events only o --iarr display events supporting Instruction Address Range Restriction o --iear display Instruction Event Address Register events only o --opcm display events supporting OpCode Matching o --nogroups suppress display of Event grouping information Bugs There are no known bugs in this utility. If you find a bug, it should be reported to the PAPI Mailing List at ptools-perfapi@ptools.org. Version 5.2.0.0 Tue Jun 17 2014 papi_native_avail(1)
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