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__ */
139