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-rw-r--r--nuttx/binfmt/nxflat.c280
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diff --git a/nuttx/binfmt/nxflat.c b/nuttx/binfmt/nxflat.c
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index db29941ca..000000000
--- a/nuttx/binfmt/nxflat.c
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-/****************************************************************************
- * binfmt/nxflat.c
- *
- * Copyright (C) 2009 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.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.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * 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.
- *
- ****************************************************************************/
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <nuttx/config.h>
-
-#include <sys/types.h>
-#include <stdint.h>
-#include <string.h>
-#include <nxflat.h>
-#include <debug.h>
-#include <errno.h>
-
-#include <arpa/inet.h>
-#include <nuttx/binfmt/binfmt.h>
-#include <nuttx/binfmt/nxflat.h>
-
-#ifdef CONFIG_NXFLAT
-
-/****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
-
-/* CONFIG_DEBUG, CONFIG_DEBUG_VERBOSE, and CONFIG_DEBUG_BINFMT have to be
- * defined or CONFIG_NXFLAT_DUMPBUFFER does nothing.
- */
-
-#if !defined(CONFIG_DEBUG_VERBOSE) || !defined (CONFIG_DEBUG_BINFMT)
-# undef CONFIG_NXFLAT_DUMPBUFFER
-#endif
-
-#ifdef CONFIG_NXFLAT_DUMPBUFFER
-# define nxflat_dumpbuffer(m,b,n) bvdbgdumpbuffer(m,b,n)
-#else
-# define nxflat_dumpbuffer(m,b,n)
-#endif
-
-#ifndef MIN
-# define MIN(a,b) (a < b ? a : b)
-#endif
-
-/****************************************************************************
- * Private Function Prototypes
- ****************************************************************************/
-
-static int nxflat_loadbinary(struct binary_s *binp);
-#if defined(CONFIG_DEBUG) && defined(CONFIG_DEBUG_BINFMT)
-static void nxflat_dumploadinfo(struct nxflat_loadinfo_s *loadinfo);
-#endif
-
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
-static struct binfmt_s g_nxflatbinfmt =
-{
- NULL, /* next */
- nxflat_loadbinary, /* load */
-};
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: nxflat_dumploadinfo
- ****************************************************************************/
-
-#if defined(CONFIG_DEBUG) && defined(CONFIG_DEBUG_BINFMT)
-static void nxflat_dumploadinfo(struct nxflat_loadinfo_s *loadinfo)
-{
- unsigned long dsize = loadinfo->datasize + loadinfo->bsssize;
-
- bdbg("LOAD_INFO:\n");
- bdbg(" ISPACE:\n");
- bdbg(" ispace: %08lx\n", loadinfo->ispace);
- bdbg(" entryoffs: %08lx\n", loadinfo->entryoffs);
- bdbg(" isize: %08lx\n", loadinfo->isize);
-
- bdbg(" DSPACE:\n");
- bdbg(" dspace: %08lx\n", loadinfo->dspace);
- if (loadinfo->dspace != NULL)
- {
- bdbg(" crefs: %d\n", loadinfo->dspace->crefs);
- bdbg(" region: %08lx\n", loadinfo->dspace->region);
- }
- bdbg(" datasize: %08lx\n", loadinfo->datasize);
- bdbg(" bsssize: %08lx\n", loadinfo->bsssize);
- bdbg(" (pad): %08lx\n", loadinfo->dsize - dsize);
- bdbg(" stacksize: %08lx\n", loadinfo->stacksize);
- bdbg(" dsize: %08lx\n", loadinfo->dsize);
-
- bdbg(" RELOCS:\n");
- bdbg(" relocstart: %08lx\n", loadinfo->relocstart);
- bdbg(" reloccount: %d\n", loadinfo->reloccount);
-
- bdbg(" HANDLES:\n");
- bdbg(" filfd: %d\n", loadinfo->filfd);
-}
-#else
-# define nxflat_dumploadinfo(i)
-#endif
-
-/****************************************************************************
- * Name: nxflat_loadbinary
- *
- * Description:
- * Verify that the file is an NXFLAT binary and, if so, load the NXFLAT
- * binary into memory
- *
- ****************************************************************************/
-
-static int nxflat_loadbinary(struct binary_s *binp)
-{
- struct nxflat_loadinfo_s loadinfo; /* Contains globals for libnxflat */
- int ret;
-
- bvdbg("Loading file: %s\n", binp->filename);
-
- /* Initialize the xflat library to load the program binary. */
-
- ret = nxflat_init(binp->filename, &loadinfo);
- nxflat_dumploadinfo(&loadinfo);
- if (ret != 0)
- {
- bdbg("Failed to initialize for load of NXFLAT program: %d\n", ret);
- goto errout;
- }
-
- /* Load the program binary */
-
- ret = nxflat_load(&loadinfo);
- nxflat_dumploadinfo(&loadinfo);
- if (ret != 0)
- {
- bdbg("Failed to load NXFLAT program binary: %d\n", ret);
- goto errout_with_init;
- }
-
- /* Bind the program to the exported symbol table */
-
- ret = nxflat_bind(&loadinfo, binp->exports, binp->nexports);
- if (ret != 0)
- {
- bdbg("Failed to bind symbols program binary: %d\n", ret);
- goto errout_with_load;
- }
-
- /* Return the load information. By convention, D-space address
- * space is stored as the first allocated memory.
- */
-
- binp->entrypt = (main_t)(loadinfo.ispace + loadinfo.entryoffs);
- binp->mapped = (void*)loadinfo.ispace;
- binp->mapsize = loadinfo.isize;
- binp->stacksize = loadinfo.stacksize;
-
- /* Add the ELF allocation to the alloc[] only if there is no address
- * enironment. If there is an address environment, it will automatically
- * be freed when the function exits
- *
- * REVISIT: If the module is loaded then unloaded, wouldn't this cause
- * a memory leak?
- */
-
-#ifdef CONFIG_ADDRENV
-# warning "REVISIT"
-#else
- binp->alloc[0] = (void*)loadinfo.dspace;
-#endif
-
-#ifdef CONFIG_ADDRENV
- /* Save the address environment. This will be needed when the module is
- * executed for the up_addrenv_assign() call.
- */
-
- binp->addrenv = loadinfo.addrenv;
-#endif
-
- nxflat_dumpbuffer("Entry code", (FAR const uint8_t*)binp->entrypt,
- MIN(loadinfo.isize - loadinfo.entryoffs, 512));
-
- nxflat_uninit(&loadinfo);
- return OK;
-
-errout_with_load:
- nxflat_unload(&loadinfo);
-errout_with_init:
- nxflat_uninit(&loadinfo);
-errout:
- return ret;
-}
-
-/***********************************************************************
- * Public Functions
- ***********************************************************************/
-
-/***********************************************************************
- * Name: nxflat_initialize
- *
- * Description:
- * NXFLAT support is built unconditionally. However, it order to
- * use this binary format, this function must be called during system
- * format in order to register the NXFLAT binary format.
- *
- * Returned Value:
- * This is a NuttX internal function so it follows the convention that
- * 0 (OK) is returned on success and a negated errno is returned on
- * failure.
- *
- ***********************************************************************/
-
-int nxflat_initialize(void)
-{
- int ret;
-
- /* Register ourselves as a binfmt loader */
-
- bvdbg("Registering NXFLAT\n");
- ret = register_binfmt(&g_nxflatbinfmt);
- if (ret != 0)
- {
- bdbg("Failed to register binfmt: %d\n", ret);
- }
- return ret;
-}
-
-/****************************************************************************
- * Name: nxflat_uninitialize
- *
- * Description:
- * Unregister the NXFLAT binary loader
- *
- * Returned Value:
- * None
- *
- ****************************************************************************/
-
-void nxflat_uninitialize(void)
-{
- unregister_binfmt(&g_nxflatbinfmt);
-}
-
-#endif /* CONFIG_NXFLAT */
-