diff options
Diffstat (limited to 'misc/pascal/libpoff/pfwreloc.c')
-rw-r--r-- | misc/pascal/libpoff/pfwreloc.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/misc/pascal/libpoff/pfwreloc.c b/misc/pascal/libpoff/pfwreloc.c new file mode 100644 index 000000000..e7b4def24 --- /dev/null +++ b/misc/pascal/libpoff/pfwreloc.c @@ -0,0 +1,162 @@ +/********************************************************************** + * pfwreloc.c + * Write relocation data to a POFF file + * + * 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 <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> + +#include "keywords.h" /* Standard types */ +#include "pedefs.h" /* error code definitions */ + +#include "perr.h" /* error() */ +#include "pofflib.h" /* POFF library interface */ +#include "pfprivate.h" /* POFF private definitions */ + +/********************************************************************** + * Pre-processor Definitions + **********************************************************************/ + +/********************************************************************** + * Global Variables + **********************************************************************/ + +/********************************************************************** + * Private Variables + **********************************************************************/ + +/*********************************************************************** + * Private Function Prototypes + ***********************************************************************/ + +/*********************************************************************** + * Private Functions + ***********************************************************************/ + +static void poffCheckRelocationAllocation(poffInfo_t *poffInfo) +{ + /* Check if we have allocated a line number buffer yet */ + + if (!poffInfo->relocTable) + { + /* No, allocate it now */ + + poffInfo->relocTable = (uint8_t*)malloc(INITIAL_RELOC_TABLE_SIZE); + if (!poffInfo->relocTable) + { + fatal(eNOMEMORY); + } + + poffInfo->relocSection.sh_size = 0; + poffInfo->relocAlloc = INITIAL_RELOC_TABLE_SIZE; + } +} + +/***********************************************************************/ + +static void poffCheckRelocationReallocation(poffInfo_t *poffInfo) +{ + if (poffInfo->relocSection.sh_size + sizeof(poffRelocation_t) > + poffInfo->relocAlloc) + { + uint32_t newAlloc = + poffInfo->relocAlloc + + RELOC_TABLE_INCREMENT; + + void *tmp; + + /* Reallocate the line number buffer */ + + tmp = realloc(poffInfo->relocTable, newAlloc); + if (!tmp) + { + fatal(eNOMEMORY); + } + + /* And set the new size */ + + poffInfo->relocAlloc = newAlloc; + poffInfo->relocTable = (uint8_t*)tmp; + } +} + +/*********************************************************************** + * Public Functions + ***********************************************************************/ + +/***********************************************************************/ +/* Add a relocation to the relocation table. Returns index value + * associated with the relocation entry in the relocation table. + */ + +uint32_t poffAddRelocation(poffHandle_t handle, + uint8_t relocType, uint32_t symIndex, + uint32_t sectionDataOffset) +{ + poffInfo_t *poffInfo = (poffInfo_t*)handle; + poffRelocation_t *prl; + uint32_t index; + + /* Verify that the relocation table has been allocated */ + + poffCheckRelocationAllocation(poffInfo); + + /* Verify that the relocation table is large enough to hold + * information about another relocation. + */ + + poffCheckRelocationReallocation(poffInfo); + + /* Save the relocation information in the relocation table */ + + index = poffInfo->relocSection.sh_size; + prl = (poffRelocation_t*)&poffInfo->relocTable[index]; + + prl->rl_info = RLI_MAKE(symIndex, relocType); + prl->rl_offset = sectionDataOffset; + + /* Set the new size of the line number table */ + + poffInfo->relocSection.sh_size += sizeof(poffRelocation_t); + return index; +} + +/***********************************************************************/ |