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 struct exec
9 {
10 unsigned char a_dynamic:1; /* A __DYNAMIC is in this image. */
11 unsigned char a_toolversion:7;
12 unsigned char a_machtype;
13 unsigned short a_info;
14 unsigned int a_text; /* Length of text, in bytes. */
15 unsigned int a_data; /* Length of data, in bytes. */
16 unsigned int a_bss; /* Length of bss, in bytes. */
17 unsigned int a_syms; /* Length of symbol table, in bytes. */
18 unsigned int a_entry; /* Where program begins. */
19 unsigned int a_trsize;
20 unsigned int a_drsize;
21 };
22
23 enum machine_type
24 {
25 M_OLDSUN2 = 0,
26 M_68010 = 1,
27 M_68020 = 2,
28 M_SPARC = 3,
29 M_386 = 100,
30 M_MIPS1 = 151,
31 M_MIPS2 = 152
32 };
33
34 #define N_MAGIC(exec) ((exec).a_info & 0xffff)
35 #define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
36 #define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)
37 #define N_SET_INFO(exec, magic, type, flags) \
38 ((exec).a_info = ((magic) & 0xffff) \
39 | (((int)(type) & 0xff) << 16) \
40 | (((flags) & 0xff) << 24))
41 #define N_SET_MAGIC(exec, magic) \
42 ((exec).a_info = ((exec).a_info & 0xffff0000) | ((magic) & 0xffff))
43 #define N_SET_MACHTYPE(exec, machtype) \
44 ((exec).a_info = \
45 ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))
46 #define N_SET_FLAGS(exec, flags) \
47 ((exec).a_info = \
48 ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
49
50 /* Code indicating object file or impure executable. */
51 #define OMAGIC 0407
52 /* Code indicating pure executable. */
53 #define NMAGIC 0410
54 /* Code indicating demand-paged executable. */
55 #define ZMAGIC 0413
56 /* This indicates a demand-paged executable with the header in the text.
57 The first page is unmapped to help trap NULL pointer references. */
58 #define QMAGIC 0314
59 /* Code indicating core file. */
60 #define CMAGIC 0421
61
62 #define N_TRSIZE(a) ((a).a_trsize)
63 #define N_DRSIZE(a) ((a).a_drsize)
64 #define N_SYMSIZE(a) ((a).a_syms)
65 #define N_BADMAG(x) \
66 (N_MAGIC(x) != OMAGIC && N_MAGIC(x) != NMAGIC \
67 && N_MAGIC(x) != ZMAGIC && N_MAGIC(x) != QMAGIC)
68 #define _N_HDROFF(x) (1024 - sizeof (struct exec))
69 #define N_TXTOFF(x) \
70 (N_MAGIC(x) == ZMAGIC ? 0 : sizeof (struct exec))
71 #define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text)
72 #define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data)
73 #define N_DRELOFF(x) (N_TRELOFF(x) + N_TRSIZE(x))
74 #define N_SYMOFF(x) \
75 (N_TXTOFF(x) + (x).a_text + (x).a_data + (x).a_trsize + (x).a_drsize)
76 #define N_STROFF(x) (N_SYMOFF(x) + N_SYMSIZE(x))
77
78 #define SPARC_PGSIZE 0x2000
79
80 /* Address of text segment in memory after it is loaded. */
81 #define N_TXTADDR(x) \
82 (unsigned long)(((N_MAGIC(x) == ZMAGIC) && ((x).a_entry < SPARC_PGSIZE)) \
83 ? 0 : SPARC_PGSIZE)
84
85 /* Address of data segment in memory after it is loaded. */
86 #define SEGMENT_SIZE SPARC_PGSIZE
87
88 #define _N_SEGMENT_ROUND(x) (((x) + SEGMENT_SIZE - 1) & ~(SEGMENT_SIZE - 1))
89 #define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text)
90
91 #define N_DATADDR(x) \
92 (N_MAGIC(x)==OMAGIC \
93 ? (N_TXTADDR(x) + (x).a_text) \
94 : (unsigned long)(_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))
95 #define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)
96
97 #if !defined (N_NLIST_DECLARED)
98 struct nlist
99 {
100 union
101 {
102 char *n_name;
103 struct nlist *n_next;
104 long n_strx;
105 } n_un;
106 unsigned char n_type;
107 char n_other;
108 short n_desc;
109 unsigned long n_value;
110 };
111 #endif /* no N_NLIST_DECLARED. */
112
113 #define N_UNDF 0
114 #define N_ABS 2
115 #define N_TEXT 4
116 #define N_DATA 6
117 #define N_BSS 8
118 #define N_FN 15
119 #define N_EXT 1
120 #define N_TYPE 036
121 #define N_STAB 0340
122 #define N_INDR 0xa
123 #define N_SETA 0x14 /* Absolute set element symbol. */
124 #define N_SETT 0x16 /* Text set element symbol. */
125 #define N_SETD 0x18 /* Data set element symbol. */
126 #define N_SETB 0x1A /* Bss set element symbol. */
127 #define N_SETV 0x1C /* Pointer to set vector in data area. */
128
129 #if !defined (N_RELOCATION_INFO_DECLARED)
130 enum reloc_type
131 {
132 RELOC_8,
133 RELOC_16,
134 RELOC_32,
135 RELOC_DISP8,
136 RELOC_DISP16,
137 RELOC_DISP32,
138 RELOC_WDISP30,
139 RELOC_WDISP22,
140 RELOC_HI22,
141 RELOC_22,
142 RELOC_13,
143 RELOC_LO10,
144 RELOC_SFA_BASE,
145 RELOC_SFA_OFF13,
146 RELOC_BASE10,
147 RELOC_BASE13,
148 RELOC_BASE22,
149 RELOC_PC10,
150 RELOC_PC22,
151 RELOC_JMP_TBL,
152 RELOC_SEGOFF16,
153 RELOC_GLOB_DAT,
154 RELOC_JMP_SLOT,
155 RELOC_RELATIVE
156 };
157
158 /* This structure describes a single relocation to be performed.
159 The text-relocation section of the file is a vector of these structures,
160 all of which apply to the text section.
161 Likewise, the data-relocation section applies to the data section. */
162
163 struct relocation_info
164 {
165 unsigned int r_address;
166 unsigned int r_index:24;
167 unsigned int r_extern:1;
168 int r_pad:2;
169 enum reloc_type r_type:5;
170 int r_addend;
171 };
172 #endif /* no N_RELOCATION_INFO_DECLARED. */
173
174 #endif /* __A_OUT_GNU_H__ */