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 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 | |
20 | enum 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) |
90 | struct 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 | |
127 | struct 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 | |