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/* ----------------------------------------------------------------------- *
*
* Copyright 1996-2019 The NASM Authors - All Rights Reserved
* See the file AUTHORS included with the NASM distribution for
* the specific copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
*
* 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.
*
* ----------------------------------------------------------------------- */
/*
* Internal definitions common to outelf32 and outelf64
*/
#ifndef OUTPUT_OUTELF_H
#define OUTPUT_OUTELF_H
#include "elf.h"
#include "rbtree.h"
#include "saa.h"
#define GLOBAL_TEMP_BASE 0x40000000 /* bigger than any sane symbol index */
/* alignment of sections in file */
#define SEC_FILEALIGN 16
/* this stuff is needed for the dwarf/stabs debugging format */
#define TY_DEBUGSYMLIN 0x40 /* internal call to debug_out */
/*
* Debugging ELF sections (section indices starting with sec_debug)
*/
/* stabs */
#define sec_stab (sec_debug + 0)
#define sec_stabstr (sec_debug + 1)
#define sec_rel_stab (sec_debug + 2)
/* stabs symbol table format */
struct stabentry {
uint32_t n_strx;
uint8_t n_type;
uint8_t n_other;
uint16_t n_desc;
uint32_t n_value;
};
/* dwarf */
#define sec_debug_aranges (sec_debug + 0)
#define sec_rela_debug_aranges (sec_debug + 1)
#define sec_debug_pubnames (sec_debug + 2)
#define sec_debug_info (sec_debug + 3)
#define sec_rela_debug_info (sec_debug + 4)
#define sec_debug_abbrev (sec_debug + 5)
#define sec_debug_line (sec_debug + 6)
#define sec_rela_debug_line (sec_debug + 7)
#define sec_debug_frame (sec_debug + 8)
#define sec_debug_loc (sec_debug + 9)
extern uint8_t elf_osabi;
extern uint8_t elf_abiver;
#define WRITE_STAB(p,n_strx,n_type,n_other,n_desc,n_value) \
do { \
WRITELONG(p, n_strx); \
WRITECHAR(p, n_type); \
WRITECHAR(p, n_other); \
WRITESHORT(p, n_desc); \
WRITELONG(p, n_value); \
} while (0)
struct elf_reloc {
struct elf_reloc *next;
int64_t address; /* relative to _start_ of section */
int64_t symbol; /* symbol index */
int64_t offset; /* symbol addend */
int type; /* type of relocation */
};
struct elf_symbol {
struct rbtree symv; /* symbol value and symbol rbtree */
int32_t strpos; /* string table position of name */
int32_t section; /* section ID of the symbol */
int type; /* symbol type */
int other; /* symbol visibility */
int32_t size; /* size of symbol */
int32_t globnum; /* symbol table offset if global */
struct elf_symbol *nextfwd; /* list of unresolved-size symbols */
char *name; /* used temporarily if in above list */
};
struct elf_section {
struct SAA *data;
uint64_t len;
uint64_t size;
uint64_t nrelocs;
int32_t index; /* NASM index or NO_SEG if internal */
int shndx; /* ELF index */
int type; /* SHT_* */
uint64_t align; /* alignment: power of two */
uint64_t flags; /* section flags */
int64_t pass_last_seen;
uint64_t entsize; /* entry size */
char *name;
struct SAA *rel;
struct elf_reloc *head;
struct elf_reloc **tail;
struct rbtree *gsyms; /* global symbols in section */
};
#endif /* OUTPUT_OUTELF_H */
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