forked from Imagelibrary/rtems
137 lines
3.4 KiB
C
137 lines
3.4 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
|
|
|
|
/*
|
|
* COPYRIGHT (c) 2012, 2018 Chris Johns <chrisj@rtems.org>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
/**
|
|
* @file
|
|
*
|
|
* @ingroup rtems_rtld
|
|
*
|
|
* @brief RTEMS Run-Time Link Editor Dynamic Loading API Shell Support.
|
|
*
|
|
* Shell command wrappers for the Dynamic Loading API.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <stdbool.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include <dlfcn.h>
|
|
#include <rtems/rtl/dlfcn-shell.h>
|
|
|
|
static void*
|
|
convert_ascii_to_voidp (const char* arg)
|
|
{
|
|
if (strcmp (arg, "base") == 0)
|
|
return RTLD_DEFAULT;
|
|
return (void*) strtoul (arg, NULL, 16);
|
|
}
|
|
|
|
int
|
|
shell_dlopen (int argc, char* argv[])
|
|
{
|
|
int arg;
|
|
for (arg = 1; arg < argc; arg++)
|
|
{
|
|
void* handle = dlopen (argv[arg], RTLD_NOW | RTLD_GLOBAL);
|
|
if (handle)
|
|
{
|
|
int unresolved;
|
|
char* message = "loaded";
|
|
if (dlinfo (handle, RTLD_DI_UNRESOLVED, &unresolved) < 0)
|
|
message = "dlinfo error checking unresolved status";
|
|
else if (unresolved)
|
|
message = "has unresolved externals";
|
|
printf ("handle: %p %s\n", handle, message);
|
|
}
|
|
else
|
|
printf ("error: %s\n", dlerror ());
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
shell_dlclose (int argc, char* argv[])
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static bool
|
|
lookup_dlsym (void** value, int argc, char* argv[])
|
|
{
|
|
if (argc >= 3)
|
|
{
|
|
void* handle = convert_ascii_to_voidp (argv[1]);
|
|
if (handle)
|
|
{
|
|
*value = dlsym (handle, argv[2]);
|
|
if (*value)
|
|
return true;
|
|
else
|
|
printf ("error: invalid handle or symbol\n");
|
|
}
|
|
else
|
|
printf ("error: invalid handle");
|
|
}
|
|
else
|
|
printf ("error: requires handle and symbol name\n");
|
|
return false;
|
|
}
|
|
|
|
int
|
|
shell_dlsym (int argc, char* argv[])
|
|
{
|
|
void* value;
|
|
if (lookup_dlsym (&value, argc, argv))
|
|
{
|
|
printf ("%s = %p\n", argv[2], value);
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
typedef int (*call_p)(int argc, char* argv[]);
|
|
|
|
int
|
|
shell_dlcall (int argc, char* argv[])
|
|
{
|
|
void* value;
|
|
if (lookup_dlsym (&value, argc, argv))
|
|
{
|
|
call_p call = value;
|
|
int r;
|
|
printf ("(*%p)(%d, ....)\n", value, argc - 3);
|
|
r = call (argc - 3, argv + 3);
|
|
printf ("return %d\n", r);
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|