mirror of
https://github.com/netwide-assembler/nasm.git
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134 lines
5.2 KiB
C
134 lines
5.2 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright 1996-2019 The NASM Authors - All Rights Reserved
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* See the file AUTHORS included with the NASM distribution for
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* the specific copyright holders.
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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
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* conditions are met:
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*
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* * 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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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ----------------------------------------------------------------------- */
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/*
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* Internal definitions common to outelf32 and outelf64
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*/
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#ifndef OUTPUT_OUTELF_H
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#define OUTPUT_OUTELF_H
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#include "elf.h"
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#include "rbtree.h"
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#include "saa.h"
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#define GLOBAL_TEMP_BASE 0x40000000 /* bigger than any sane symbol index */
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/* alignment of sections in file */
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#define SEC_FILEALIGN 16
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/* this stuff is needed for the dwarf/stabs debugging format */
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#define TY_DEBUGSYMLIN 0x40 /* internal call to debug_out */
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/*
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* Debugging ELF sections (section indices starting with sec_debug)
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*/
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/* stabs */
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#define sec_stab (sec_debug + 0)
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#define sec_stabstr (sec_debug + 1)
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#define sec_rel_stab (sec_debug + 2)
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/* stabs symbol table format */
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struct stabentry {
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uint32_t n_strx;
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uint8_t n_type;
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uint8_t n_other;
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uint16_t n_desc;
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uint32_t n_value;
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};
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/* dwarf */
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#define sec_debug_aranges (sec_debug + 0)
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#define sec_rela_debug_aranges (sec_debug + 1)
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#define sec_debug_pubnames (sec_debug + 2)
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#define sec_debug_info (sec_debug + 3)
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#define sec_rela_debug_info (sec_debug + 4)
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#define sec_debug_abbrev (sec_debug + 5)
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#define sec_debug_line (sec_debug + 6)
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#define sec_rela_debug_line (sec_debug + 7)
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#define sec_debug_frame (sec_debug + 8)
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#define sec_debug_loc (sec_debug + 9)
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extern uint8_t elf_osabi;
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extern uint8_t elf_abiver;
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#define WRITE_STAB(p,n_strx,n_type,n_other,n_desc,n_value) \
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do { \
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WRITELONG(p, n_strx); \
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WRITECHAR(p, n_type); \
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WRITECHAR(p, n_other); \
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WRITESHORT(p, n_desc); \
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WRITELONG(p, n_value); \
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} while (0)
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struct elf_reloc {
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struct elf_reloc *next;
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int64_t address; /* relative to _start_ of section */
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int64_t symbol; /* symbol index */
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int64_t offset; /* symbol addend */
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int type; /* type of relocation */
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};
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struct elf_symbol {
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struct rbtree symv; /* symbol value and symbol rbtree */
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int32_t strpos; /* string table position of name */
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int32_t section; /* section ID of the symbol */
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int type; /* symbol type */
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int other; /* symbol visibility */
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int32_t size; /* size of symbol */
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int32_t globnum; /* symbol table offset if global */
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struct elf_symbol *nextfwd; /* list of unresolved-size symbols */
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char *name; /* used temporarily if in above list */
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};
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struct elf_section {
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struct SAA *data;
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uint64_t len;
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uint64_t size;
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uint64_t nrelocs;
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int32_t index; /* NASM index or NO_SEG if internal */
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int shndx; /* ELF index */
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int type; /* SHT_* */
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uint64_t align; /* alignment: power of two */
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uint64_t flags; /* section flags */
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int64_t pass_last_seen;
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uint64_t entsize; /* entry size */
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char *name;
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struct SAA *rel;
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struct elf_reloc *head;
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struct elf_reloc **tail;
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struct rbtree *gsyms; /* global symbols in section */
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};
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#endif /* OUTPUT_OUTELF_H */
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