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Diffstat (limited to 'nuttx/binfmt/libelf/libelf_bind.c')
-rw-r--r--nuttx/binfmt/libelf/libelf_bind.c334
1 files changed, 0 insertions, 334 deletions
diff --git a/nuttx/binfmt/libelf/libelf_bind.c b/nuttx/binfmt/libelf/libelf_bind.c
deleted file mode 100644
index ccdb5108e..000000000
--- a/nuttx/binfmt/libelf/libelf_bind.c
+++ /dev/null
@@ -1,334 +0,0 @@
-/****************************************************************************
- * binfmt/libelf/libelf_bind.c
- *
- * Copyright (C) 2012 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 <stdint.h>
-#include <string.h>
-#include <elf32.h>
-#include <errno.h>
-#include <assert.h>
-#include <debug.h>
-
-#include <nuttx/binfmt/elf.h>
-#include <nuttx/binfmt/symtab.h>
-
-#include "libelf.h"
-
-/****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
-
-/* CONFIG_DEBUG, CONFIG_DEBUG_VERBOSE, and CONFIG_DEBUG_BINFMT have to be
- * defined or CONFIG_ELF_DUMPBUFFER does nothing.
- */
-
-#if !defined(CONFIG_DEBUG_VERBOSE) || !defined (CONFIG_DEBUG_BINFMT)
-# undef CONFIG_ELF_DUMPBUFFER
-#endif
-
-#ifndef CONFIG_ELF_BUFFERSIZE
-# define CONFIG_ELF_BUFFERSIZE 128
-#endif
-
-#ifdef CONFIG_ELF_DUMPBUFFER
-# define elf_dumpbuffer(m,b,n) bvdbgdumpbuffer(m,b,n)
-#else
-# define elf_dumpbuffer(m,b,n)
-#endif
-
-/****************************************************************************
- * Private Types
- ****************************************************************************/
-
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: elf_readrel
- *
- * Description:
- * Read the ELF32_Rel structure into memory.
- *
- ****************************************************************************/
-
-static inline int elf_readrel(FAR struct elf_loadinfo_s *loadinfo,
- FAR const Elf32_Shdr *relsec,
- int index, FAR Elf32_Rel *rel)
-{
- off_t offset;
-
- /* Verify that the symbol table index lies within symbol table */
-
- if (index < 0 || index > (relsec->sh_size / sizeof(Elf32_Rel)))
- {
- bdbg("Bad relocation symbol index: %d\n", index);
- return -EINVAL;
- }
-
- /* Get the file offset to the symbol table entry */
-
- offset = relsec->sh_offset + sizeof(Elf32_Rel) * index;
-
- /* And, finally, read the symbol table entry into memory */
-
- return elf_read(loadinfo, (FAR uint8_t*)rel, sizeof(Elf32_Rel), offset);
-}
-
-/****************************************************************************
- * Name: elf_relocate and elf_relocateadd
- *
- * Description:
- * Perform all relocations associated with a section.
- *
- * Returned Value:
- * 0 (OK) is returned on success and a negated errno is returned on
- * failure.
- *
- ****************************************************************************/
-
-static int elf_relocate(FAR struct elf_loadinfo_s *loadinfo, int relidx,
- FAR const struct symtab_s *exports, int nexports)
-
-{
- FAR Elf32_Shdr *relsec = &loadinfo->shdr[relidx];
- FAR Elf32_Shdr *dstsec = &loadinfo->shdr[relsec->sh_info];
- Elf32_Rel rel;
- Elf32_Sym sym;
- uintptr_t addr;
- int symidx;
- int ret;
- int i;
-
- /* Examine each relocation in the section. 'relsec' is the section
- * containing the relations. 'dstsec' is the section containing the data
- * to be relocated.
- */
-
- for (i = 0; i < relsec->sh_size / sizeof(Elf32_Rel); i++)
- {
- /* Read the relocation entry into memory */
-
- ret = elf_readrel(loadinfo, relsec, i, &rel);
- if (ret < 0)
- {
- bdbg("Section %d reloc %d: Failed to read relocation entry: %d\n",
- relidx, i, ret);
- return ret;
- }
-
- /* Get the symbol table index for the relocation. This is contained
- * in a bit-field within the r_info element.
- */
-
- symidx = ELF32_R_SYM(rel.r_info);
-
- /* Read the symbol table entry into memory */
-
- ret = elf_readsym(loadinfo, symidx, &sym);
- if (ret < 0)
- {
- bdbg("Section %d reloc %d: Failed to read symbol[%d]: %d\n",
- relidx, i, symidx, ret);
- return ret;
- }
-
- /* Get the value of the symbol (in sym.st_value) */
-
- ret = elf_symvalue(loadinfo, &sym, exports, nexports);
- if (ret < 0)
- {
- bdbg("Section %d reloc %d: Failed to get value of symbol[%d]: %d\n",
- relidx, i, symidx, ret);
- return ret;
- }
-
- /* Calculate the relocation address. */
-
- if (rel.r_offset < 0 || rel.r_offset > dstsec->sh_size - sizeof(uint32_t))
- {
- bdbg("Section %d reloc %d: Relocation address out of range, offset %d size %d\n",
- relidx, i, rel.r_offset, dstsec->sh_size);
- return -EINVAL;
- }
-
- addr = dstsec->sh_addr + rel.r_offset;
-
- /* If CONFIG_ADDRENV=y, then 'addr' lies in a virtual address space that
- * may not be in place now. elf_addrenv_select() will temporarily
- * instantiate that address space.
- */
-
-#ifdef CONFIG_ADDRENV
- ret = elf_addrenv_select(loadinfo);
- if (ret < 0)
- {
- bdbg("ERROR: elf_addrenv_select() failed: %d\n", ret);
- return ret;
- }
-#endif
-
- /* Now perform the architecture-specific relocation */
-
- ret = arch_relocate(&rel, &sym, addr);
- if (ret < 0)
- {
-#ifdef CONFIG_ADDRENV
- (void)elf_addrenv_restore(loadinfo);
-#endif
- bdbg("ERROR: Section %d reloc %d: Relocation failed: %d\n", ret);
- return ret;
- }
-
- /* Restore the original address environment */
-
-#ifdef CONFIG_ADDRENV
- ret = elf_addrenv_restore(loadinfo);
- if (ret < 0)
- {
- bdbg("ERROR: elf_addrenv_restore() failed: %d\n", ret);
- return ret;
- }
-#endif
- }
-
- return OK;
-}
-
-static int elf_relocateadd(FAR struct elf_loadinfo_s *loadinfo, int relidx,
- FAR const struct symtab_s *exports, int nexports)
-{
- bdbg("Not implemented\n");
- return -ENOSYS;
-}
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: elf_bind
- *
- * Description:
- * Bind the imported symbol names in the loaded module described by
- * 'loadinfo' using the exported symbol values provided by 'symtab'.
- *
- * Returned Value:
- * 0 (OK) is returned on success and a negated errno is returned on
- * failure.
- *
- ****************************************************************************/
-
-int elf_bind(FAR struct elf_loadinfo_s *loadinfo,
- FAR const struct symtab_s *exports, int nexports)
-{
- int ret;
- int i;
-
- /* Find the symbol and string tables */
-
- ret = elf_findsymtab(loadinfo);
- if (ret < 0)
- {
- return ret;
- }
-
- /* Allocate an I/O buffer. This buffer is used by elf_symname() to
- * accumulate the variable length symbol name.
- */
-
- ret = elf_allocbuffer(loadinfo);
- if (ret < 0)
- {
- bdbg("elf_allocbuffer failed: %d\n", ret);
- return -ENOMEM;
- }
-
- /* Process relocations in every allocated section */
-
- for (i = 1; i < loadinfo->ehdr.e_shnum; i++)
- {
- /* Get the index to the relocation section */
-
- int infosec = loadinfo->shdr[i].sh_info;
- if (infosec >= loadinfo->ehdr.e_shnum)
- {
- continue;
- }
-
- /* Make sure that the section is allocated. We can't relocated
- * sections that were not loaded into memory.
- */
-
- if ((loadinfo->shdr[infosec].sh_flags & SHF_ALLOC) == 0)
- {
- continue;
- }
-
- /* Process the relocations by type */
-
- if (loadinfo->shdr[i].sh_type == SHT_REL)
- {
- ret = elf_relocate(loadinfo, i, exports, nexports);
- }
- else if (loadinfo->shdr[i].sh_type == SHT_RELA)
- {
- ret = elf_relocateadd(loadinfo, i, exports, nexports);
- }
-
- if (ret < 0)
- {
- break;
- }
- }
-
- /* Flush the instruction cache before starting the newly loaded module */
-
-#ifdef CONFIG_ELF_ICACHE
- arch_flushicache((FAR void*)loadinfo->elfalloc, loadinfo->elfsize);
-#endif
-
- return ret;
-}
-
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