* Anyone know some reasonably portable way to determine the return address of a function?
@ 2000-06-09 13:52 David Taylor
0 siblings, 0 replies; 2+ messages in thread
From: David Taylor @ 2000-06-09 13:52 UTC (permalink / raw)
To: George T. Talbot; +Cc: gdb
Date: Tue, 06 Jun 2000 18:52:45 -0400
From: "George T. Talbot" <george@moberg.com>
I'm working on some library code in Linux, and, for debugging purposes, I'd
like to be able to call dlinfo() on the return address of a function in my
library so that I can track usage of the function:
#define magic() ...woudln't I like to know...
If you're using gcc, look in the gcc documentation at
__builtin_return_address.
void some_library_function(void)
{
void* return_address = magic();
Dl_info info;
if (dlinfo(return_address, &info))
fprintf(some_log_file, "some_library_function() called from %s in executable
%s.\n",
info.dli_sname, info.dli_fname);
else
fprintf(some_log_file, "some_library_function() called from unknown
caller.\n");
...do the actual work...
}
-----
void some_code(void)
{
...
some_library_function();
...
}
In other words, I want magic() above to return the address in some_code()
where some_library_function() was called.
Please cc: me if you post a reply to the list, in case I miss your reply.
--
George T. Talbot
<george at moberg dot com>
^ permalink raw reply [flat|nested] 2+ messages in thread
* Anyone know some reasonably portable way to determine the return address of a function?
@ 2000-06-06 15:47 George T. Talbot
0 siblings, 0 replies; 2+ messages in thread
From: George T. Talbot @ 2000-06-06 15:47 UTC (permalink / raw)
To: gdb
I'm working on some library code in Linux, and, for debugging purposes, I'd
like to be able to call dlinfo() on the return address of a function in my
library so that I can track usage of the function:
#define magic() ...woudln't I like to know...
void some_library_function(void)
{
void* return_address = magic();
Dl_info info;
if (dlinfo(return_address, &info))
fprintf(some_log_file, "some_library_function() called from %s in executable
%s.\n",
info.dli_sname, info.dli_fname);
else
fprintf(some_log_file, "some_library_function() called from unknown
caller.\n");
...do the actual work...
}
-----
void some_code(void)
{
...
some_library_function();
...
}
In other words, I want magic() above to return the address in some_code()
where some_library_function() was called.
Please cc: me if you post a reply to the list, in case I miss your reply.
--
George T. Talbot
<george at moberg dot com>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2000-06-09 13:52 Anyone know some reasonably portable way to determine the return address of a function? David Taylor
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