diff options
Diffstat (limited to 'nuttx/binfmt/nxflat.c')
-rw-r--r-- | nuttx/binfmt/nxflat.c | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/nuttx/binfmt/nxflat.c b/nuttx/binfmt/nxflat.c new file mode 100644 index 000000000..99b99249a --- /dev/null +++ b/nuttx/binfmt/nxflat.c @@ -0,0 +1,257 @@ +/**************************************************************************** + * binfmt/nxflat.c + * + * Copyright (C) 2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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.h> +#include <nuttx/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 NXFLT program: %d\n", ret); + goto errout; + } + + /* Load the program binary */ + + ret = nxflat_load(&loadinfo); + nxflat_dumploadinfo(&loadinfo); + if (ret != 0) + { + bdbg("Failed to load NXFLT 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 */ + + binp->entrypt = (main_t)(loadinfo.ispace + loadinfo.entryoffs); + binp->ispace = (void*)loadinfo.ispace; + binp->dspace = (void*)loadinfo.dspace; + binp->isize = loadinfo.isize; + binp->stacksize = loadinfo.stacksize; + + nxflat_dumpbuffer("Entry code", (FAR const uint8_t*)binp->entrypt, + MIN(binp->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 */ + |