1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/* SPDX-License-Identifier: BSD-2-Clause */
/* Copyright 1996-2019 The NASM Authors - All Rights Reserved */
/*
* 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 */
|
