115 lines
3.6 KiB
C
115 lines
3.6 KiB
C
/*
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* Copyright (c) 2006, Swedish Institute of Computer Science
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* All rights reserved.
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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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* 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 the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be 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 INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#ifndef CLE_H
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#define CLE_H
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/*
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* The Contiki dynamic Link Editor (CLE) for small systems.
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*/
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/* These typedefs limits object file size! */
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typedef uint16_t cle_off; /* Offset from start of file. */
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typedef uint16_t cle_word;
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typedef uint16_t cle_half;
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/* Also used for address arithmetic (can't be void *). */
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#ifdef __AVR__
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typedef uint32_t cle_addr;
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#else
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typedef uintptr_t cle_addr;
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#endif
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typedef char cle_scratch[32];
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struct cle_info {
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cle_addr text;
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void *data, *bss;
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cle_off textrelaoff, datarelaoff;
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cle_word textrelasize, datarelasize;
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cle_off textoff, dataoff;
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cle_word textsize, datasize, bsssize;
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cle_off symtaboff, strtaboff;
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cle_word symtabsize;
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unsigned char text_shndx;
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unsigned char data_shndx;
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unsigned char bss_shndx;
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unsigned char unused_shndx;
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cle_scratch name; /* Scratch and errmsg buffer. */
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};
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int
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cle_read_info(struct cle_info *info,
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int (*read)(void *, int, off_t),
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off_t hdr); /* Offset to start of file. */
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int
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cle_relocate(struct cle_info *info,
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int (*read)(void *, int, off_t),
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off_t hdr, /* Offset to start of file. */
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void *segmem, /* Where segment is stored in memory. */
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cle_off reloff, /* .rela.<segment> start */
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cle_word relsize); /* .rela.<segment> size */
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void *
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cle_lookup(struct cle_info *info,
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int (*read)(void *, int, off_t),
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off_t hdr, /* Offset to start of file. */
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const char *symbol);
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struct elf32_rela; /* Struct forward decl. */
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int cle_write_reloc(void *,
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const struct elf32_rela *,
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cle_addr,
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const struct cle_info *);
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/*
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* Error codes that apply in general to linking and loading.
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*/
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#define CLE_OK 0
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#define CLE_BAD_HEADER 1
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#define CLE_NO_SYMTAB 2
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#define CLE_NO_STRTAB 3
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#define CLE_NO_TEXT 4
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#define CLE_UNDEFINED 5
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#define CLE_UNKNOWN_SEGMENT 6
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#define CLE_NO_STARTPOINT 7
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#define CLE_TEXT_TO_LARGE 8
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#define CLE_DATA_TO_LARGE 9
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#define CLE_UNKNOWN_RELOC 10
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#define CLE_MULTIPLY_DEFINED 11
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#endif /* CLE_H */
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