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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __A_OUT_GNU_H__
2#define __A_OUT_GNU_H__
3
4#define __GNU_EXEC_MACROS__
5
6#ifndef __STRUCT_EXEC_OVERRIDE__
7
8#include <asm/a.out.h>
9
10#endif /* __STRUCT_EXEC_OVERRIDE__ */
11
David Howells7fa30312008-02-08 04:19:28 -080012#ifndef __ASSEMBLY__
13
Linus Torvalds1da177e2005-04-16 15:20:36 -070014/* these go in the N_MACHTYPE field */
15enum machine_type {
16#if defined (M_OLDSUN2)
17 M__OLDSUN2 = M_OLDSUN2,
18#else
19 M_OLDSUN2 = 0,
20#endif
21#if defined (M_68010)
22 M__68010 = M_68010,
23#else
24 M_68010 = 1,
25#endif
26#if defined (M_68020)
27 M__68020 = M_68020,
28#else
29 M_68020 = 2,
30#endif
31#if defined (M_SPARC)
32 M__SPARC = M_SPARC,
33#else
34 M_SPARC = 3,
35#endif
36 /* skip a bunch so we don't run into any of sun's numbers */
37 M_386 = 100,
38 M_MIPS1 = 151, /* MIPS R3000/R3000 binary */
39 M_MIPS2 = 152 /* MIPS R6000/R4000 binary */
40};
41
42#if !defined (N_MAGIC)
43#define N_MAGIC(exec) ((exec).a_info & 0xffff)
44#endif
45#define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
46#define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)
47#define N_SET_INFO(exec, magic, type, flags) \
48 ((exec).a_info = ((magic) & 0xffff) \
49 | (((int)(type) & 0xff) << 16) \
50 | (((flags) & 0xff) << 24))
51#define N_SET_MAGIC(exec, magic) \
52 ((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff)))
53
54#define N_SET_MACHTYPE(exec, machtype) \
55 ((exec).a_info = \
56 ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))
57
58#define N_SET_FLAGS(exec, flags) \
59 ((exec).a_info = \
60 ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
61
62/* Code indicating object file or impure executable. */
63#define OMAGIC 0407
64/* Code indicating pure executable. */
65#define NMAGIC 0410
66/* Code indicating demand-paged executable. */
67#define ZMAGIC 0413
68/* This indicates a demand-paged executable with the header in the text.
69 The first page is unmapped to help trap NULL pointer references */
70#define QMAGIC 0314
71
72/* Code indicating core file. */
73#define CMAGIC 0421
74
75#if !defined (N_BADMAG)
76#define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \
77 && N_MAGIC(x) != NMAGIC \
78 && N_MAGIC(x) != ZMAGIC \
79 && N_MAGIC(x) != QMAGIC)
80#endif
81
82#define _N_HDROFF(x) (1024 - sizeof (struct exec))
83
84#if !defined (N_TXTOFF)
85#define N_TXTOFF(x) \
86 (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \
87 (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec)))
88#endif
89
90#if !defined (N_DATOFF)
91#define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text)
92#endif
93
94#if !defined (N_TRELOFF)
95#define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data)
96#endif
97
98#if !defined (N_DRELOFF)
99#define N_DRELOFF(x) (N_TRELOFF(x) + N_TRSIZE(x))
100#endif
101
102#if !defined (N_SYMOFF)
103#define N_SYMOFF(x) (N_DRELOFF(x) + N_DRSIZE(x))
104#endif
105
106#if !defined (N_STROFF)
107#define N_STROFF(x) (N_SYMOFF(x) + N_SYMSIZE(x))
108#endif
109
110/* Address of text segment in memory after it is loaded. */
111#if !defined (N_TXTADDR)
112#define N_TXTADDR(x) (N_MAGIC(x) == QMAGIC ? PAGE_SIZE : 0)
113#endif
114
115/* Address of data segment in memory after it is loaded.
116 Note that it is up to you to define SEGMENT_SIZE
117 on machines not listed here. */
118#if defined(vax) || defined(hp300) || defined(pyr)
119#define SEGMENT_SIZE page_size
120#endif
121#ifdef sony
122#define SEGMENT_SIZE 0x2000
123#endif /* Sony. */
124#ifdef is68k
125#define SEGMENT_SIZE 0x20000
126#endif
127#if defined(m68k) && defined(PORTAR)
128#define PAGE_SIZE 0x400
129#define SEGMENT_SIZE PAGE_SIZE
130#endif
131
132#ifdef linux
Kirill A. Shutemoved7b1882008-02-07 00:15:56 -0800133#ifdef __KERNEL__
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134#include <asm/page.h>
Kirill A. Shutemoved7b1882008-02-07 00:15:56 -0800135#else
136#include <unistd.h>
137#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138#if defined(__i386__) || defined(__mc68000__)
139#define SEGMENT_SIZE 1024
140#else
141#ifndef SEGMENT_SIZE
Kirill A. Shutemoved7b1882008-02-07 00:15:56 -0800142#ifdef __KERNEL__
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143#define SEGMENT_SIZE PAGE_SIZE
Kirill A. Shutemoved7b1882008-02-07 00:15:56 -0800144#else
145#define SEGMENT_SIZE getpagesize()
146#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147#endif
148#endif
149#endif
150
Nick Wilson8c0e33c2005-06-25 14:59:00 -0700151#define _N_SEGMENT_ROUND(x) ALIGN(x, SEGMENT_SIZE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152
153#define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text)
154
155#ifndef N_DATADDR
156#define N_DATADDR(x) \
157 (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \
158 : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))
159#endif
160
161/* Address of bss segment in memory after it is loaded. */
162#if !defined (N_BSSADDR)
163#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)
164#endif
165
166#if !defined (N_NLIST_DECLARED)
167struct nlist {
168 union {
169 char *n_name;
170 struct nlist *n_next;
171 long n_strx;
172 } n_un;
173 unsigned char n_type;
174 char n_other;
175 short n_desc;
176 unsigned long n_value;
177};
178#endif /* no N_NLIST_DECLARED. */
179
180#if !defined (N_UNDF)
181#define N_UNDF 0
182#endif
183#if !defined (N_ABS)
184#define N_ABS 2
185#endif
186#if !defined (N_TEXT)
187#define N_TEXT 4
188#endif
189#if !defined (N_DATA)
190#define N_DATA 6
191#endif
192#if !defined (N_BSS)
193#define N_BSS 8
194#endif
195#if !defined (N_FN)
196#define N_FN 15
197#endif
198
199#if !defined (N_EXT)
200#define N_EXT 1
201#endif
202#if !defined (N_TYPE)
203#define N_TYPE 036
204#endif
205#if !defined (N_STAB)
206#define N_STAB 0340
207#endif
208
209/* The following type indicates the definition of a symbol as being
210 an indirect reference to another symbol. The other symbol
211 appears as an undefined reference, immediately following this symbol.
212
213 Indirection is asymmetrical. The other symbol's value will be used
214 to satisfy requests for the indirect symbol, but not vice versa.
215 If the other symbol does not have a definition, libraries will
216 be searched to find a definition. */
217#define N_INDR 0xa
218
219/* The following symbols refer to set elements.
220 All the N_SET[ATDB] symbols with the same name form one set.
221 Space is allocated for the set in the text section, and each set
222 element's value is stored into one word of the space.
223 The first word of the space is the length of the set (number of elements).
224
225 The address of the set is made into an N_SETV symbol
226 whose name is the same as the name of the set.
227 This symbol acts like a N_DATA global symbol
228 in that it can satisfy undefined external references. */
229
230/* These appear as input to LD, in a .o file. */
231#define N_SETA 0x14 /* Absolute set element symbol */
232#define N_SETT 0x16 /* Text set element symbol */
233#define N_SETD 0x18 /* Data set element symbol */
234#define N_SETB 0x1A /* Bss set element symbol */
235
236/* This is output from LD. */
237#define N_SETV 0x1C /* Pointer to set vector in data area. */
238
239#if !defined (N_RELOCATION_INFO_DECLARED)
240/* This structure describes a single relocation to be performed.
241 The text-relocation section of the file is a vector of these structures,
242 all of which apply to the text section.
243 Likewise, the data-relocation section applies to the data section. */
244
245struct relocation_info
246{
247 /* Address (within segment) to be relocated. */
248 int r_address;
249 /* The meaning of r_symbolnum depends on r_extern. */
250 unsigned int r_symbolnum:24;
251 /* Nonzero means value is a pc-relative offset
252 and it should be relocated for changes in its own address
253 as well as for changes in the symbol or section specified. */
254 unsigned int r_pcrel:1;
255 /* Length (as exponent of 2) of the field to be relocated.
256 Thus, a value of 2 indicates 1<<2 bytes. */
257 unsigned int r_length:2;
258 /* 1 => relocate with value of symbol.
259 r_symbolnum is the index of the symbol
260 in file's the symbol table.
261 0 => relocate with the address of a segment.
262 r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS
263 (the N_EXT bit may be set also, but signifies nothing). */
264 unsigned int r_extern:1;
265 /* Four bits that aren't used, but when writing an object file
266 it is desirable to clear them. */
267#ifdef NS32K
268 unsigned r_bsr:1;
269 unsigned r_disp:1;
270 unsigned r_pad:2;
271#else
272 unsigned int r_pad:4;
273#endif
274};
275#endif /* no N_RELOCATION_INFO_DECLARED. */
276
David Howells7fa30312008-02-08 04:19:28 -0800277#endif /*__ASSEMBLY__ */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278#endif /* __A_OUT_GNU_H__ */