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/*
* COPYRIGHT (c) 2012, 2018 Chris Johns <chrisj@rtems.org>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
/**
* @file
*
* @ingroup rtems_rtld
*
* @brief RTEMS Run-Time Link Editor Dynamic Loading API Shell Support.
*
* Shell command wrappers for the Dynamic Loading API.
*/
#if 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;
}
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