forked from Imagelibrary/rtems
118 lines
2.3 KiB
C
118 lines
2.3 KiB
C
/*
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* COPYRIGHT (c) 2012, 2018 Chris Johns <chrisj@rtems.org>
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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/**
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* @file
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*
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* @ingroup rtems_rtld
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*
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* @brief RTEMS Run-Time Link Editor Dynamic Loading API Shell Support.
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*
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* Shell command wrappers for the Dynamic Loading API.
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*/
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <dlfcn.h>
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#include <rtems/rtl/dlfcn-shell.h>
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static void*
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convert_ascii_to_voidp (const char* arg)
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{
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if (strcmp (arg, "base") == 0)
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return RTLD_DEFAULT;
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return (void*) strtoul (arg, NULL, 16);
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}
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int
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shell_dlopen (int argc, char* argv[])
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{
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int arg;
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for (arg = 1; arg < argc; arg++)
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{
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void* handle = dlopen (argv[arg], RTLD_NOW | RTLD_GLOBAL);
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if (handle)
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{
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int unresolved;
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char* message = "loaded";
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if (dlinfo (handle, RTLD_DI_UNRESOLVED, &unresolved) < 0)
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message = "dlinfo error checking unresolved status";
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else if (unresolved)
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message = "has unresolved externals";
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printf ("handle: %p %s\n", handle, message);
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}
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else
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printf ("error: %s\n", dlerror ());
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}
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return 0;
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}
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int
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shell_dlclose (int argc, char* argv[])
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{
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return 0;
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}
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static bool
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lookup_dlsym (void** value, int argc, char* argv[])
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{
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if (argc >= 3)
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{
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void* handle = convert_ascii_to_voidp (argv[1]);
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if (handle)
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{
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*value = dlsym (handle, argv[2]);
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if (*value)
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return true;
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else
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printf ("error: invalid handle or symbol\n");
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}
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else
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printf ("error: invalid handle");
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}
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else
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printf ("error: requires handle and symbol name\n");
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return false;
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}
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int
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shell_dlsym (int argc, char* argv[])
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{
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void* value;
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if (lookup_dlsym (&value, argc, argv))
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{
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printf ("%s = %p\n", argv[2], value);
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return 0;
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}
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return -1;
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}
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typedef int (*call_p)(int argc, char* argv[]);
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int
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shell_dlcall (int argc, char* argv[])
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{
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void* value;
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if (lookup_dlsym (&value, argc, argv))
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{
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call_p call = value;
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int r;
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printf ("(*%p)(%d, ....)\n", value, argc - 3);
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r = call (argc - 3, argv + 3);
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printf ("return %d\n", r);
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return 0;
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}
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return -1;
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}
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