master
1#ifndef __A_OUT_GNU_H__
2#define __A_OUT_GNU_H__
3
4#include <bits/a.out.h>
5
6#define __GNU_EXEC_MACROS__
7
8struct exec
9{
10 unsigned long a_info; /* Use macros N_MAGIC, etc for access. */
11 unsigned int a_text; /* Length of text, in bytes. */
12 unsigned int a_data; /* Length of data, in bytes. */
13 unsigned int a_bss; /* Length of uninitialized data area for file, in bytes. */
14 unsigned int a_syms; /* Length of symbol table data in file, in bytes. */
15 unsigned int a_entry; /* Start address. */
16 unsigned int a_trsize;/* Length of relocation info for text, in bytes. */
17 unsigned int a_drsize;/* Length of relocation info for data, in bytes. */
18};
19
20enum machine_type
21{
22 M_OLDSUN2 = 0,
23 M_68010 = 1,
24 M_68020 = 2,
25 M_SPARC = 3,
26 M_386 = 100,
27 M_MIPS1 = 151,
28 M_MIPS2 = 152
29};
30
31#define N_MAGIC(exec) ((exec).a_info & 0xffff)
32#define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
33#define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)
34#define N_SET_INFO(exec, magic, type, flags) \
35 ((exec).a_info = ((magic) & 0xffff) \
36 | (((int)(type) & 0xff) << 16) \
37 | (((flags) & 0xff) << 24))
38#define N_SET_MAGIC(exec, magic) \
39 ((exec).a_info = ((exec).a_info & 0xffff0000) | ((magic) & 0xffff))
40#define N_SET_MACHTYPE(exec, machtype) \
41 ((exec).a_info = \
42 ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))
43#define N_SET_FLAGS(exec, flags) \
44 ((exec).a_info = \
45 ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
46
47/* Code indicating object file or impure executable. */
48#define OMAGIC 0407
49/* Code indicating pure executable. */
50#define NMAGIC 0410
51/* Code indicating demand-paged executable. */
52#define ZMAGIC 0413
53/* This indicates a demand-paged executable with the header in the text.
54 The first page is unmapped to help trap NULL pointer references. */
55#define QMAGIC 0314
56/* Code indicating core file. */
57#define CMAGIC 0421
58
59#define N_TRSIZE(a) ((a).a_trsize)
60#define N_DRSIZE(a) ((a).a_drsize)
61#define N_SYMSIZE(a) ((a).a_syms)
62#define N_BADMAG(x) \
63 (N_MAGIC(x) != OMAGIC && N_MAGIC(x) != NMAGIC \
64 && N_MAGIC(x) != ZMAGIC && N_MAGIC(x) != QMAGIC)
65#define _N_HDROFF(x) (1024 - sizeof (struct exec))
66#define N_TXTOFF(x) \
67 (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) \
68 : (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec)))
69#define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text)
70#define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data)
71#define N_DRELOFF(x) (N_TRELOFF(x) + N_TRSIZE(x))
72#define N_SYMOFF(x) (N_DRELOFF(x) + N_DRSIZE(x))
73#define N_STROFF(x) (N_SYMOFF(x) + N_SYMSIZE(x))
74
75/* Address of text segment in memory after it is loaded. */
76#define N_TXTADDR(x) (N_MAGIC(x) == QMAGIC ? 4096 : 0)
77
78/* Address of data segment in memory after it is loaded. */
79#define SEGMENT_SIZE 1024
80
81#define _N_SEGMENT_ROUND(x) (((x) + SEGMENT_SIZE - 1) & ~(SEGMENT_SIZE - 1))
82#define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text)
83
84#define N_DATADDR(x) \
85 (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \
86 : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))
87#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)
88
89#if !defined (N_NLIST_DECLARED)
90struct nlist
91{
92 union
93 {
94 char *n_name;
95 struct nlist *n_next;
96 long n_strx;
97 } n_un;
98 unsigned char n_type;
99 char n_other;
100 short n_desc;
101 unsigned long n_value;
102};
103#endif /* no N_NLIST_DECLARED. */
104
105#define N_UNDF 0
106#define N_ABS 2
107#define N_TEXT 4
108#define N_DATA 6
109#define N_BSS 8
110#define N_FN 15
111#define N_EXT 1
112#define N_TYPE 036
113#define N_STAB 0340
114#define N_INDR 0xa
115#define N_SETA 0x14 /* Absolute set element symbol. */
116#define N_SETT 0x16 /* Text set element symbol. */
117#define N_SETD 0x18 /* Data set element symbol. */
118#define N_SETB 0x1A /* Bss set element symbol. */
119#define N_SETV 0x1C /* Pointer to set vector in data area. */
120
121#if !defined (N_RELOCATION_INFO_DECLARED)
122/* This structure describes a single relocation to be performed.
123 The text-relocation section of the file is a vector of these structures,
124 all of which apply to the text section.
125 Likewise, the data-relocation section applies to the data section. */
126
127struct relocation_info
128{
129 int r_address;
130 unsigned int r_symbolnum:24;
131 unsigned int r_pcrel:1;
132 unsigned int r_length:2;
133 unsigned int r_extern:1;
134 unsigned int r_pad:4;
135};
136#endif /* no N_RELOCATION_INFO_DECLARED. */
137
138#endif /* __A_OUT_GNU_H__ */