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195 lines
6.7 KiB
195 lines
6.7 KiB
/********************************************************************** |
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* pfhandle.c |
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* POFF library global variables |
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* |
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* Copyright (C) 2008 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <gnutt@nuttx.org> |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. Neither the name NuttX nor the names of its contributors may be |
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* used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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**********************************************************************/ |
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/********************************************************************** |
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* Included Files |
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**********************************************************************/ |
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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 "keywords.h" /* Standard types */ |
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#include "pfprivate.h" /* POFF private definitions */ |
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#include "pofflib.h" /* Public interfaces */ |
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/********************************************************************** |
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* Definitions |
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**********************************************************************/ |
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/********************************************************************** |
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* Global Variables |
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**********************************************************************/ |
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/********************************************************************** |
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* Private Variables |
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**********************************************************************/ |
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/*********************************************************************** |
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* Private Function Prototypes |
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***********************************************************************/ |
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/*********************************************************************** |
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* Private Functions |
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***********************************************************************/ |
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/*********************************************************************** |
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* Public Functions |
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***********************************************************************/ |
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/***********************************************************************/ |
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/* Set all global data structures to a known state */ |
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poffHandle_t poffCreateHandle(void) |
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{ |
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poffInfo_t *poffInfo; |
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/* Create a new POFF handle */ |
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poffInfo = (poffInfo_t*)malloc(sizeof(poffInfo_t)); |
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if (poffInfo != NULL) |
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{ |
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/* Set everthing to zero */ |
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memset(poffInfo, 0, sizeof(poffInfo_t)); |
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/* Initialize POFF file header */ |
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poffInfo->fileHeader.fh_ident[FHI_MAG0] = FHI_POFF_MAG0; |
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poffInfo->fileHeader.fh_ident[FHI_MAG1] = FHI_POFF_MAG1; |
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poffInfo->fileHeader.fh_ident[FHI_MAG2] = FHI_POFF_MAG2; |
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poffInfo->fileHeader.fh_ident[FHI_MAG3] = FHI_POFF_MAG3; |
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poffInfo->fileHeader.fh_version = FHV_CURRENT; |
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poffInfo->fileHeader.fh_shsize = sizeof(poffSectionHeader_t); |
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poffInfo->fileHeader.fh_shoff = sizeof(poffFileHeader_t); |
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/* Initialize the program section header */ |
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poffInfo->progSection.sh_type = SHT_PROGDATA; |
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poffInfo->progSection.sh_flags = SHF_ALLOC | SHF_EXEC; |
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/* Initialize the initialized data section header */ |
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poffInfo->roDataSection.sh_type = SHT_PROGDATA; |
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poffInfo->roDataSection.sh_flags = SHF_WRITE | SHF_ALLOC; |
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/* Initialize the symbol table section header */ |
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poffInfo->symbolTableSection.sh_type = SHT_SYMTAB; |
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poffInfo->symbolTableSection.sh_entsize = sizeof(poffSymbol_t); |
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/* Initialize the string table section header */ |
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poffInfo->stringTableSection.sh_type = SHT_STRTAB; |
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/* Initialize the relocation table section header */ |
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poffInfo->relocSection.sh_type = SHT_REL; |
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poffInfo->relocSection.sh_entsize = sizeof(poffRelocation_t); |
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/* Initialize the file table section header */ |
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poffInfo->fileNameTableSection.sh_type = SHT_FILETAB; |
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poffInfo->fileNameTableSection.sh_entsize = sizeof(poffFileTab_t); |
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/* Initialize the line number section header */ |
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poffInfo->lineNumberSection.sh_type = SHT_LINENO; |
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poffInfo->lineNumberSection.sh_entsize = sizeof(poffLineNumber_t); |
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/* Initialize the debug function info section header */ |
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poffInfo->debugFuncSection.sh_type = SHT_DEBUG; |
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poffInfo->debugFuncSection.sh_entsize = sizeof(poffDebugFuncInfo_t); |
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} |
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return poffInfo; |
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} |
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/***********************************************************************/ |
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void poffDestroyHandle(poffHandle_t handle) |
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{ |
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poffInfo_t *poffInfo = (poffInfo_t*)handle; |
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/* Free all of the allocated, in-memory data */ |
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if (poffInfo->progSectionData) |
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free(poffInfo->progSectionData); |
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if (poffInfo->roDataSectionData) |
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free(poffInfo->roDataSectionData); |
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if (poffInfo->symbolTable) |
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free(poffInfo->symbolTable); |
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if (poffInfo->stringTable) |
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free(poffInfo->stringTable); |
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if (poffInfo->relocTable) |
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free(poffInfo->relocTable); |
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if (poffInfo->fileNameTable) |
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free(poffInfo->fileNameTable); |
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if (poffInfo->lineNumberTable) |
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free(poffInfo->lineNumberTable); |
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if (poffInfo->debugFuncTable) |
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free(poffInfo->debugFuncTable); |
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/* Free the container */ |
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free(handle); |
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} |
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/***********************************************************************/ |
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void poffResetAccess(poffHandle_t handle) |
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{ |
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poffInfo_t *poffInfo = (poffInfo_t*)handle; |
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/* Reset read/write indices */ |
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poffInfo->symbolIndex = 0; |
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poffInfo->progSectionIndex = 0; |
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poffInfo->relocIndex = 0; |
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poffInfo->fileNameIndex = 0; |
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poffInfo->lineNumberIndex = 0; |
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poffInfo->debugFuncIndex = 0; |
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} |
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/***********************************************************************/ |
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