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px4-firmware/misc/pascal/libpoff/pfswap.c

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/**********************************************************************
* libpoff/pfswap.c
* Handle POFF Endian-ness
*
* Copyright (C) 2008-2009 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 <stdint.h>
#include "keywords.h" /* Standard types */
#include "paslib.h" /* Common library */
#include "pfprivate.h" /* POFF private definitions */
/**********************************************************************
* Pre-processor Definitions
**********************************************************************/
/**********************************************************************
* Global Variables
**********************************************************************/
/**********************************************************************
* Private Variables
**********************************************************************/
/***********************************************************************
* Private Function Prototypes
***********************************************************************/
/***********************************************************************
* Private Functions
***********************************************************************/
#ifdef CONFIG_POFF_SWAPNEEDED
static inline void poffSwapRelocationEntry(poffRelocation_t *prel)
{
prel->rl_info = poff32(prel->rl_info);
prel->rl_offset = poff32(prel->rl_offset);
}
#endif
/***********************************************************************/
#ifdef CONFIG_POFF_SWAPNEEDED
static inline void poffSwapSymbolTableEntry(poffSymbol_t *psym)
{
psym->st_name = poff32(psym->st_name);
psym->st_value = poff32(psym->st_value);
psym->st_size = poff32(psym->st_size);
}
#endif
/***********************************************************************/
#ifdef CONFIG_POFF_SWAPNEEDED
static inline void poffSwapFileTabEntry(poffFileTab_t *pfile)
{
*pfile = poff32((uint32_t)*pfile);
}
#endif
/***********************************************************************/
#ifdef CONFIG_POFF_SWAPNEEDED
static inline void poffSwaplineno(poffLineNumber_t *plineno)
{
plineno->ln_lineno = poff16(plineno->ln_lineno);
plineno->ln_fileno = poff16(plineno->ln_fileno);
plineno->ln_poffset = poff32(plineno->ln_poffset);
}
#endif
/***********************************************************************/
#ifdef CONFIG_POFF_SWAPNEEDED
static inline void poffDebugFuncEntry(poffDebugFuncInfo_t *pdbg)
{
pdbg->df_value = poff32(pdbg->df_value);
pdbg->df_size = poff32(pdbg->df_size);
pdbg->df_nparms = poff32(pdbg->df_nparms);
}
#endif
/***********************************************************************/
#ifdef CONFIG_POFF_SWAPNEEDED
static inline void poffDebugArgEntry(poffDebugArgInfo_t *parg)
{
parg->da_size = poff32(parg->da_size);
}
#endif
/***********************************************************************
* Public Functions
***********************************************************************/
#ifdef CONFIG_POFF_SWAPNEEDED
void poffSwapFileHeader(poffFileHeader_t *pFileHeader)
{
pFileHeader->fh_shsize = poff16(pFileHeader->fh_shsize);
pFileHeader->fh_shnum = poff16(pFileHeader->fh_shnum);
pFileHeader->fh_name = poff32(pFileHeader->fh_name);
pFileHeader->fh_entry = poff32(pFileHeader->fh_entry);
pFileHeader->fh_shoff = poff32(pFileHeader->fh_shoff);
}
#endif
/***********************************************************************/
#ifdef CONFIG_POFF_SWAPNEEDED
void poffSwapSectionHeader(poffSectionHeader_t *pSectionHeader)
{
pSectionHeader->sh_entsize = poff16(pSectionHeader->sh_entsize);
pSectionHeader->sh_name = poff32(pSectionHeader->sh_name);
pSectionHeader->sh_addr = poff32(pSectionHeader->sh_addr);
pSectionHeader->sh_offset = poff32(pSectionHeader->sh_offset);
pSectionHeader->sh_size = poff32(pSectionHeader->sh_size);
}
#endif
/***********************************************************************/
#ifdef CONFIG_POFF_SWAPNEEDED
void poffSwapSymbolTableData(poffInfo_t *poffInfo)
{
poffSymbol_t *psym;
uint32_t index;
for (index = 0;
index < poffInfo->symbolTableSection.sh_size;
index += poffInfo->symbolTableSection.sh_entsize)
{
psym = (poffSymbol_t*)&poffInfo->symbolTable[index];
poffSwapSymbolTableEntry(psym);
}
}
#endif
/***********************************************************************/
#ifdef CONFIG_POFF_SWAPNEEDED
void poffSwapRelocationData(poffInfo_t *poffInfo)
{
poffRelocation_t *prel;
uint32_t index;
for (index = 0;
index < poffInfo->relocSection.sh_size;
index += poffInfo->relocSection.sh_entsize)
{
prel = (poffRelocation_t*)&poffInfo->relocTable[index];
poffSwapRelocationEntry(prel);
}
}
#endif
/***********************************************************************/
#ifdef CONFIG_POFF_SWAPNEEDED
void poffSwapFileTableData(poffInfo_t *poffInfo)
{
poffFileTab_t *pfile;
uint32_t index;
for (index = 0;
index < poffInfo->relocSection.sh_size;
index += poffInfo->relocSection.sh_entsize)
{
pfile = (poffFileTab_t*)&poffInfo->relocTable[index];
poffSwapFileTabEntry(pfile);
}
}
#endif
/***********************************************************************/
#ifdef CONFIG_POFF_SWAPNEEDED
void poffSwapLineNumberData(poffInfo_t *poffInfo)
{
poffLineNumber_t *plineno;
uint32_t index;
for (index = 0;
index < poffInfo->relocSection.sh_size;
index += poffInfo->relocSection.sh_entsize)
{
plineno = (poffLineNumber_t*)&poffInfo->relocTable[index];
poffSwaplineno(plineno);
}
}
#endif
/***********************************************************************/
#ifdef CONFIG_POFF_SWAPNEEDED
void poffSwapDebugData(poffInfo_t *poffInfo)
{
poffDebugFuncInfo_t *pdbg;
poffDebugArgInfo_t *parg;
uint32_t i;
int j;
for (i = 0; i + sizeof(poffDebugFuncInfo_t) < poffInfo->relocSection.sh_size;)
{
pdbg = (poffDebugFuncInfo_t*)&poffInfo->debugFuncTable[i];
poffDebugFuncEntry(pdbg);
i += sizeof(poffDebugFuncInfo_t);
for (j = 0; j < pdbg->df_nparms; j++)
{
parg = (poffDebugArgInfo_t*)&poffInfo->debugFuncTable[i];
poffDebugArgEntry(parg);
i += sizeof(poffDebugArgInfo_t);
}
}
}
#endif
/***********************************************************************/
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