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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
8/*
9 * OSF/1 ECOFF header structs. ECOFF files consist of:
10 * - a file header (struct filehdr),
11 * - an a.out header (struct aouthdr),
12 * - one or more section headers (struct scnhdr).
13 * The filhdr's "f_nscns" field contains the
14 * number of section headers.
15 */
16
17struct filehdr
18{
19 /* OSF/1 "file" header */
20 unsigned short f_magic, f_nscns;
21 unsigned int f_timdat;
22 unsigned long f_symptr;
23 unsigned int f_nsyms;
24 unsigned short f_opthdr, f_flags;
25};
26
27struct aouthdr
28{
29 unsigned long info; /* After that it looks quite normal.. */
30 unsigned long tsize;
31 unsigned long dsize;
32 unsigned long bsize;
33 unsigned long entry;
34 unsigned long text_start; /* With a few additions that actually make sense. */
35 unsigned long data_start;
36 unsigned long bss_start;
37 unsigned int gprmask, fprmask; /* Bitmask of general & floating point regs used in binary. */
38 unsigned long gpvalue;
39};
40
41struct scnhdr
42{
43 char s_name[8];
44 unsigned long s_paddr;
45 unsigned long s_vaddr;
46 unsigned long s_size;
47 unsigned long s_scnptr;
48 unsigned long s_relptr;
49 unsigned long s_lnnoptr;
50 unsigned short s_nreloc;
51 unsigned short s_nlnno;
52 unsigned int s_flags;
53};
54
55struct exec
56{
57 /* OSF/1 "file" header */
58 struct filehdr fh;
59 struct aouthdr ah;
60};
61
62#define a_info ah.info
63#define a_text ah.tsize
64#define a_data ah.dsize
65#define a_bss ah.bsize
66#define a_entry ah.entry
67#define a_textstart ah.text_start
68#define a_datastart ah.data_start
69#define a_bssstart ah.bss_start
70#define a_gprmask ah.gprmask
71#define a_fprmask ah.fprmask
72#define a_gpvalue ah.gpvalue
73
74
75#define AOUTHSZ sizeof (struct aouthdr)
76#define SCNHSZ sizeof (struct scnhdr)
77#define SCNROUND 16
78
79enum machine_type
80{
81 M_OLDSUN2 = 0,
82 M_68010 = 1,
83 M_68020 = 2,
84 M_SPARC = 3,
85 M_386 = 100,
86 M_MIPS1 = 151,
87 M_MIPS2 = 152
88};
89
90#define N_MAGIC(exec) ((exec).a_info & 0xffff)
91#define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
92#define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)
93#define N_SET_INFO(exec, magic, type, flags) \
94 ((exec).a_info = ((magic) & 0xffff) \
95 | (((int)(type) & 0xff) << 16) \
96 | (((flags) & 0xff) << 24))
97#define N_SET_MAGIC(exec, magic) \
98 ((exec).a_info = ((exec).a_info & 0xffff0000) | ((magic) & 0xffff))
99#define N_SET_MACHTYPE(exec, machtype) \
100 ((exec).a_info = \
101 ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))
102#define N_SET_FLAGS(exec, flags) \
103 ((exec).a_info = \
104 ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
105
106/* Code indicating object file or impure executable. */
107#define OMAGIC 0407
108/* Code indicating pure executable. */
109#define NMAGIC 0410
110/* Code indicating demand-paged executable. */
111#define ZMAGIC 0413
112/* This indicates a demand-paged executable with the header in the text.
113 The first page is unmapped to help trap NULL pointer references. */
114#define QMAGIC 0314
115/* Code indicating core file. */
116#define CMAGIC 0421
117
118#define N_TRSIZE(x) 0
119#define N_DRSIZE(x) 0
120#define N_SYMSIZE(x) 0
121#define N_BADMAG(x) \
122 (N_MAGIC(x) != OMAGIC && N_MAGIC(x) != NMAGIC \
123 && N_MAGIC(x) != ZMAGIC && N_MAGIC(x) != QMAGIC)
124#define _N_HDROFF(x) (1024 - sizeof (struct exec))
125#define N_TXTOFF(x) \
126 ((long) N_MAGIC(x) == ZMAGIC ? 0 \
127 : ((sizeof (struct exec) + (x).fh.f_nscns * SCNHSZ + SCNROUND - 1) \
128 & ~(SCNROUND - 1)))
129
130#define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text)
131#define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data)
132#define N_DRELOFF(x) (N_TRELOFF(x) + N_TRSIZE(x))
133#define N_SYMOFF(x) (N_DRELOFF(x) + N_DRSIZE(x))
134#define N_STROFF(x) (N_SYMOFF(x) + N_SYMSIZE(x))
135
136/* Address of text segment in memory after it is loaded. */
137#define N_TXTADDR(x) ((x).a_textstart)
138
139/* Address of data segment in memory after it is loaded. */
140#define SEGMENT_SIZE 1024
141
142#define _N_SEGMENT_ROUND(x) (((x) + SEGMENT_SIZE - 1) & ~(SEGMENT_SIZE - 1))
143#define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text)
144
145#define N_DATADDR(x) ((x).a_datastart)
146#define N_BSSADDR(x) ((x).a_bssstart)
147
148#if !defined (N_NLIST_DECLARED)
149struct nlist
150{
151 union
152 {
153 char *n_name;
154 struct nlist *n_next;
155 long n_strx;
156 } n_un;
157 unsigned char n_type;
158 char n_other;
159 short n_desc;
160 unsigned long n_value;
161};
162#endif /* no N_NLIST_DECLARED. */
163
164#define N_UNDF 0
165#define N_ABS 2
166#define N_TEXT 4
167#define N_DATA 6
168#define N_BSS 8
169#define N_FN 15
170#define N_EXT 1
171#define N_TYPE 036
172#define N_STAB 0340
173#define N_INDR 0xa
174#define N_SETA 0x14 /* Absolute set element symbol. */
175#define N_SETT 0x16 /* Text set element symbol. */
176#define N_SETD 0x18 /* Data set element symbol. */
177#define N_SETB 0x1A /* Bss set element symbol. */
178#define N_SETV 0x1C /* Pointer to set vector in data area. */
179
180#if !defined (N_RELOCATION_INFO_DECLARED)
181/* This structure describes a single relocation to be performed.
182 The text-relocation section of the file is a vector of these structures,
183 all of which apply to the text section.
184 Likewise, the data-relocation section applies to the data section. */
185
186struct relocation_info
187{
188 int r_address;
189 unsigned int r_symbolnum:24;
190 unsigned int r_pcrel:1;
191 unsigned int r_length:2;
192 unsigned int r_extern:1;
193 unsigned int r_pad:4;
194};
195#endif /* no N_RELOCATION_INFO_DECLARED. */
196
197#endif /* __A_OUT_GNU_H__ */
198

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source code of glibc/sysdeps/unix/sysv/linux/alpha/a.out.h