diff options
Diffstat (limited to 'nuttx/binfmt/libnxflat/libnxflat_load.c')
| -rw-r--r-- | nuttx/binfmt/libnxflat/libnxflat_load.c | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/nuttx/binfmt/libnxflat/libnxflat_load.c b/nuttx/binfmt/libnxflat/libnxflat_load.c deleted file mode 100644 index 5f13b577a..000000000 --- a/nuttx/binfmt/libnxflat/libnxflat_load.c +++ /dev/null @@ -1,222 +0,0 @@ -/**************************************************************************** - * binfmt/libnxflat/libnxflat_load.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 <sys/mman.h> - -#include <stdint.h> -#include <stdlib.h> -#include <nxflat.h> -#include <debug.h> -#include <errno.h> - -#include <arpa/inet.h> - -#include <nuttx/binfmt/nxflat.h> - -#include "libnxflat.h" - -/**************************************************************************** - * Pre-Processor Definitions - ****************************************************************************/ - -#ifndef MAX -#define MAX(x,y) ((x) > (y) ? (x) : (y)) -#endif - -/**************************************************************************** - * Private Constant Data - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: nxflat_load - * - * Description: - * Loads the binary specified by nxflat_init into memory, mapping - * the I-space executable regions, allocating the D-Space region, - * and inializing the data segment (relocation information is - * temporarily loaded into the BSS region. BSS will be cleared - * by nxflat_bind() after the relocation data has been processed). - * - * Returned Value: - * 0 (OK) is returned on success and a negated errno is returned on - * failure. - * - ****************************************************************************/ - -int nxflat_load(struct nxflat_loadinfo_s *loadinfo) -{ - off_t doffset; /* Offset to .data in the NXFLAT file */ - uint32_t dreadsize; /* Total number of bytes of .data to be read */ - uint32_t relocsize; /* Memory needed to hold relocations */ - uint32_t extrasize; /* MAX(BSS size, relocsize) */ - int ret = OK; - - /* Calculate the extra space we need to allocate. This extra space will be - * the size of the BSS section. This extra space will also be used - * temporarily to hold relocation information. So the allocated size of this - * region will either be the size of .data + size of.bss section OR, the - * size of .data + the relocation entries, whichever is larger - * - * This is the amount of memory that we have to have to hold the - * relocations. - */ - - relocsize = loadinfo->reloccount * sizeof(struct nxflat_reloc_s); - - /* In the file, the relocations should lie at the same offset as BSS. - * The additional amount that we allocate have to be either (1) the - * BSS size, or (2) the size of the relocation records, whicher is - * larger. - */ - - extrasize = MAX(loadinfo->bsssize, relocsize); - - /* Use this additional amount to adjust the total size of the dspace - * region. - */ - - loadinfo->dsize = loadinfo->datasize + extrasize; - - /* The number of bytes of data that we have to read from the file is - * the data size plus the size of the relocation table. - */ - - dreadsize = loadinfo->datasize + relocsize; - - /* We'll need this a few times. */ - - doffset = loadinfo->isize; - - /* We will make two mmap calls create an address space for the executable. - * We will attempt to map the file to get the ISpace address space and - * to allocate RAM to get the DSpace address space. If the filesystem does - * not support file mapping, the map() implementation should do the - * right thing. - */ - - /* The following call will give as a pointer to the mapped file ISpace. - * This may be in ROM, RAM, Flash, ... We don't really care where the memory - * resides as long as it is fully initialized and ready to execute. - */ - - loadinfo->ispace = (uint32_t)mmap(NULL, loadinfo->isize, PROT_READ, - MAP_SHARED|MAP_FILE, loadinfo->filfd, 0); - if (loadinfo->ispace == (uint32_t)MAP_FAILED) - { - bdbg("Failed to map NXFLAT ISpace: %d\n", errno); - return -errno; - } - - bvdbg("Mapped ISpace (%d bytes) at %08x\n", loadinfo->isize, loadinfo->ispace); - - /* The following call allocate D-Space memory and will provide a pointer - * to the allocated (but still uninitialized) D-Space memory. - */ - - ret = nxflat_addrenv_alloc(loadinfo, loadinfo->dsize); - if (ret < 0) - { - bdbg("ERROR: nxflat_addrenv_alloc() failed: %d\n", ret); - return ret; - } - - bvdbg("Allocated DSpace (%d bytes) at %p\n", - loadinfo->dsize, loadinfo->dspace->region); - - /* If CONFIG_ADDRENV=y, then the D-Space allocation lies in an address - * environment that may not be in place. So, in that case, we must call - * nxflat_addrenv_select to temporarily instantiate that address space - * it can be initialized. - */ - -#ifdef CONFIG_ADDRENV - ret = nxflat_addrenv_select(loadinfo); - if (ret < 0) - { - bdbg("ERROR: nxflat_addrenv_select() failed: %d\n", ret); - return ret; - } -#endif - - /* Now, read the data into allocated DSpace at doffset into the allocated - * DSpace memory. - */ - - ret = nxflat_read(loadinfo, (char*)loadinfo->dspace->region, dreadsize, doffset); - if (ret < 0) - { - bdbg("Failed to read .data section: %d\n", ret); - goto errout; - } - - bvdbg("TEXT: %08x Entry point offset: %08x Data offset: %08x\n", - loadinfo->ispace, loadinfo->entryoffs, doffset); - - /* Restore the original address environment */ - -#ifdef CONFIG_ADDRENV - ret = nxflat_addrenv_restore(loadinfo); - if (ret < 0) - { - bdbg("ERROR: nxflat_addrenv_restore() failed: %d\n", ret); - return ret; - } -#endif - - return OK; - -errout: -#ifdef CONFIG_ADDRENV - (void)nxflat_addrenv_restore(loadinfo); -#endif - (void)nxflat_unload(loadinfo); - return ret; -} - |