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a.out.h
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1 #ifndef _UAPI__A_OUT_GNU_H__
2 #define _UAPI__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 
12 #ifndef __ASSEMBLY__
13 
14 /* these go in the N_MACHTYPE field */
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
133 #ifndef __KERNEL__
134 #include <unistd.h>
135 #endif
136 #if defined(__i386__) || defined(__mc68000__)
137 #define SEGMENT_SIZE 1024
138 #else
139 #ifndef SEGMENT_SIZE
140 #ifndef __KERNEL__
141 #define SEGMENT_SIZE getpagesize()
142 #endif
143 #endif
144 #endif
145 #endif
146 
147 #define _N_SEGMENT_ROUND(x) ALIGN(x, SEGMENT_SIZE)
148 
149 #define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text)
150 
151 #ifndef N_DATADDR
152 #define N_DATADDR(x) \
153  (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \
154  : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))
155 #endif
156 
157 /* Address of bss segment in memory after it is loaded. */
158 #if !defined (N_BSSADDR)
159 #define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)
160 #endif
161 
162 #if !defined (N_NLIST_DECLARED)
163 struct nlist {
164  union {
165  char *n_name;
166  struct nlist *n_next;
167  long n_strx;
168  } n_un;
169  unsigned char n_type;
170  char n_other;
171  short n_desc;
172  unsigned long n_value;
173 };
174 #endif /* no N_NLIST_DECLARED. */
175 
176 #if !defined (N_UNDF)
177 #define N_UNDF 0
178 #endif
179 #if !defined (N_ABS)
180 #define N_ABS 2
181 #endif
182 #if !defined (N_TEXT)
183 #define N_TEXT 4
184 #endif
185 #if !defined (N_DATA)
186 #define N_DATA 6
187 #endif
188 #if !defined (N_BSS)
189 #define N_BSS 8
190 #endif
191 #if !defined (N_FN)
192 #define N_FN 15
193 #endif
194 
195 #if !defined (N_EXT)
196 #define N_EXT 1
197 #endif
198 #if !defined (N_TYPE)
199 #define N_TYPE 036
200 #endif
201 #if !defined (N_STAB)
202 #define N_STAB 0340
203 #endif
204 
205 /* The following type indicates the definition of a symbol as being
206  an indirect reference to another symbol. The other symbol
207  appears as an undefined reference, immediately following this symbol.
208 
209  Indirection is asymmetrical. The other symbol's value will be used
210  to satisfy requests for the indirect symbol, but not vice versa.
211  If the other symbol does not have a definition, libraries will
212  be searched to find a definition. */
213 #define N_INDR 0xa
214 
215 /* The following symbols refer to set elements.
216  All the N_SET[ATDB] symbols with the same name form one set.
217  Space is allocated for the set in the text section, and each set
218  element's value is stored into one word of the space.
219  The first word of the space is the length of the set (number of elements).
220 
221  The address of the set is made into an N_SETV symbol
222  whose name is the same as the name of the set.
223  This symbol acts like a N_DATA global symbol
224  in that it can satisfy undefined external references. */
225 
226 /* These appear as input to LD, in a .o file. */
227 #define N_SETA 0x14 /* Absolute set element symbol */
228 #define N_SETT 0x16 /* Text set element symbol */
229 #define N_SETD 0x18 /* Data set element symbol */
230 #define N_SETB 0x1A /* Bss set element symbol */
231 
232 /* This is output from LD. */
233 #define N_SETV 0x1C /* Pointer to set vector in data area. */
234 
235 #if !defined (N_RELOCATION_INFO_DECLARED)
236 /* This structure describes a single relocation to be performed.
237  The text-relocation section of the file is a vector of these structures,
238  all of which apply to the text section.
239  Likewise, the data-relocation section applies to the data section. */
240 
242 {
243  /* Address (within segment) to be relocated. */
245  /* The meaning of r_symbolnum depends on r_extern. */
246  unsigned int r_symbolnum:24;
247  /* Nonzero means value is a pc-relative offset
248  and it should be relocated for changes in its own address
249  as well as for changes in the symbol or section specified. */
250  unsigned int r_pcrel:1;
251  /* Length (as exponent of 2) of the field to be relocated.
252  Thus, a value of 2 indicates 1<<2 bytes. */
253  unsigned int r_length:2;
254  /* 1 => relocate with value of symbol.
255  r_symbolnum is the index of the symbol
256  in file's the symbol table.
257  0 => relocate with the address of a segment.
258  r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS
259  (the N_EXT bit may be set also, but signifies nothing). */
260  unsigned int r_extern:1;
261  /* Four bits that aren't used, but when writing an object file
262  it is desirable to clear them. */
263 #ifdef NS32K
264  unsigned r_bsr:1;
265  unsigned r_disp:1;
266  unsigned r_pad:2;
267 #else
268  unsigned int r_pad:4;
269 #endif
270 };
271 #endif /* no N_RELOCATION_INFO_DECLARED. */
272 
273 #endif /*__ASSEMBLY__ */
274 #endif /* _UAPI__A_OUT_GNU_H__ */