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Rev | Author | Line No. | Line |
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422 | giacomo | 1 | #ifndef __A_OUT_GNU_H__ |
2 | #define __A_OUT_GNU_H__ |
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3 | |||
4 | #define __GNU_EXEC_MACROS__ |
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5 | |||
6 | #ifndef __STRUCT_EXEC_OVERRIDE__ |
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7 | |||
8 | #include <asm/a.out.h> |
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9 | |||
10 | #endif /* __STRUCT_EXEC_OVERRIDE__ */ |
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11 | |||
12 | /* these go in the N_MACHTYPE field */ |
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13 | enum machine_type { |
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14 | #if defined (M_OLDSUN2) |
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15 | M__OLDSUN2 = M_OLDSUN2, |
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16 | #else |
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17 | M_OLDSUN2 = 0, |
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18 | #endif |
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19 | #if defined (M_68010) |
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20 | M__68010 = M_68010, |
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21 | #else |
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22 | M_68010 = 1, |
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23 | #endif |
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24 | #if defined (M_68020) |
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25 | M__68020 = M_68020, |
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26 | #else |
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27 | M_68020 = 2, |
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28 | #endif |
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29 | #if defined (M_SPARC) |
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30 | M__SPARC = M_SPARC, |
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31 | #else |
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32 | M_SPARC = 3, |
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33 | #endif |
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34 | /* skip a bunch so we don't run into any of sun's numbers */ |
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35 | M_386 = 100, |
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36 | M_MIPS1 = 151, /* MIPS R3000/R3000 binary */ |
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37 | M_MIPS2 = 152 /* MIPS R6000/R4000 binary */ |
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38 | }; |
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39 | |||
40 | #if !defined (N_MAGIC) |
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41 | #define N_MAGIC(exec) ((exec).a_info & 0xffff) |
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42 | #endif |
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43 | #define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff)) |
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44 | #define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff) |
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45 | #define N_SET_INFO(exec, magic, type, flags) \ |
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46 | ((exec).a_info = ((magic) & 0xffff) \ |
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47 | | (((int)(type) & 0xff) << 16) \ |
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48 | | (((flags) & 0xff) << 24)) |
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49 | #define N_SET_MAGIC(exec, magic) \ |
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50 | ((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff))) |
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51 | |||
52 | #define N_SET_MACHTYPE(exec, machtype) \ |
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53 | ((exec).a_info = \ |
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54 | ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16)) |
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55 | |||
56 | #define N_SET_FLAGS(exec, flags) \ |
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57 | ((exec).a_info = \ |
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58 | ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24)) |
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59 | |||
60 | /* Code indicating object file or impure executable. */ |
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61 | #define OMAGIC 0407 |
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62 | /* Code indicating pure executable. */ |
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63 | #define NMAGIC 0410 |
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64 | /* Code indicating demand-paged executable. */ |
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65 | #define ZMAGIC 0413 |
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66 | /* This indicates a demand-paged executable with the header in the text. |
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67 | The first page is unmapped to help trap NULL pointer references */ |
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68 | #define QMAGIC 0314 |
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69 | |||
70 | /* Code indicating core file. */ |
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71 | #define CMAGIC 0421 |
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72 | |||
73 | #if !defined (N_BADMAG) |
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74 | #define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \ |
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75 | && N_MAGIC(x) != NMAGIC \ |
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76 | && N_MAGIC(x) != ZMAGIC \ |
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77 | && N_MAGIC(x) != QMAGIC) |
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78 | #endif |
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79 | |||
80 | #define _N_HDROFF(x) (1024 - sizeof (struct exec)) |
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81 | |||
82 | #if !defined (N_TXTOFF) |
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83 | #define N_TXTOFF(x) \ |
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84 | (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \ |
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85 | (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec))) |
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86 | #endif |
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87 | |||
88 | #if !defined (N_DATOFF) |
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89 | #define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text) |
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90 | #endif |
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91 | |||
92 | #if !defined (N_TRELOFF) |
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93 | #define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data) |
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94 | #endif |
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95 | |||
96 | #if !defined (N_DRELOFF) |
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97 | #define N_DRELOFF(x) (N_TRELOFF(x) + N_TRSIZE(x)) |
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98 | #endif |
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99 | |||
100 | #if !defined (N_SYMOFF) |
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101 | #define N_SYMOFF(x) (N_DRELOFF(x) + N_DRSIZE(x)) |
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102 | #endif |
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103 | |||
104 | #if !defined (N_STROFF) |
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105 | #define N_STROFF(x) (N_SYMOFF(x) + N_SYMSIZE(x)) |
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106 | #endif |
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107 | |||
108 | /* Address of text segment in memory after it is loaded. */ |
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109 | #if !defined (N_TXTADDR) |
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110 | #define N_TXTADDR(x) (N_MAGIC(x) == QMAGIC ? PAGE_SIZE : 0) |
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111 | #endif |
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112 | |||
113 | /* Address of data segment in memory after it is loaded. |
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114 | Note that it is up to you to define SEGMENT_SIZE |
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115 | on machines not listed here. */ |
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116 | #if defined(vax) || defined(hp300) || defined(pyr) |
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117 | #define SEGMENT_SIZE page_size |
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118 | #endif |
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119 | #ifdef sony |
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120 | #define SEGMENT_SIZE 0x2000 |
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121 | #endif /* Sony. */ |
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122 | #ifdef is68k |
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123 | #define SEGMENT_SIZE 0x20000 |
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124 | #endif |
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125 | #if defined(m68k) && defined(PORTAR) |
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126 | #define PAGE_SIZE 0x400 |
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127 | #define SEGMENT_SIZE PAGE_SIZE |
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128 | #endif |
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129 | |||
130 | #ifdef linux |
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131 | #include <asm/page.h> |
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132 | #if defined(__i386__) || defined(__mc68000__) |
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133 | #define SEGMENT_SIZE 1024 |
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134 | #else |
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135 | #ifndef SEGMENT_SIZE |
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136 | #define SEGMENT_SIZE PAGE_SIZE |
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137 | #endif |
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138 | #endif |
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139 | #endif |
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140 | |||
141 | #define _N_SEGMENT_ROUND(x) (((x) + SEGMENT_SIZE - 1) & ~(SEGMENT_SIZE - 1)) |
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142 | |||
143 | #define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text) |
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144 | |||
145 | #ifndef N_DATADDR |
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146 | #define N_DATADDR(x) \ |
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147 | (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \ |
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148 | : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x)))) |
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149 | #endif |
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150 | |||
151 | /* Address of bss segment in memory after it is loaded. */ |
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152 | #if !defined (N_BSSADDR) |
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153 | #define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data) |
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154 | #endif |
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155 | |||
156 | #if !defined (N_NLIST_DECLARED) |
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157 | struct nlist { |
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158 | union { |
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159 | char *n_name; |
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160 | struct nlist *n_next; |
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161 | long n_strx; |
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162 | } n_un; |
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163 | unsigned char n_type; |
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164 | char n_other; |
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165 | short n_desc; |
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166 | unsigned long n_value; |
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167 | }; |
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168 | #endif /* no N_NLIST_DECLARED. */ |
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169 | |||
170 | #if !defined (N_UNDF) |
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171 | #define N_UNDF 0 |
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172 | #endif |
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173 | #if !defined (N_ABS) |
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174 | #define N_ABS 2 |
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175 | #endif |
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176 | #if !defined (N_TEXT) |
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177 | #define N_TEXT 4 |
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178 | #endif |
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179 | #if !defined (N_DATA) |
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180 | #define N_DATA 6 |
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181 | #endif |
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182 | #if !defined (N_BSS) |
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183 | #define N_BSS 8 |
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184 | #endif |
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185 | #if !defined (N_FN) |
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186 | #define N_FN 15 |
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187 | #endif |
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188 | |||
189 | #if !defined (N_EXT) |
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190 | #define N_EXT 1 |
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191 | #endif |
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192 | #if !defined (N_TYPE) |
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193 | #define N_TYPE 036 |
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194 | #endif |
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195 | #if !defined (N_STAB) |
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196 | #define N_STAB 0340 |
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197 | #endif |
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198 | |||
199 | /* The following type indicates the definition of a symbol as being |
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200 | an indirect reference to another symbol. The other symbol |
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201 | appears as an undefined reference, immediately following this symbol. |
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202 | |||
203 | Indirection is asymmetrical. The other symbol's value will be used |
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204 | to satisfy requests for the indirect symbol, but not vice versa. |
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205 | If the other symbol does not have a definition, libraries will |
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206 | be searched to find a definition. */ |
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207 | #define N_INDR 0xa |
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208 | |||
209 | /* The following symbols refer to set elements. |
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210 | All the N_SET[ATDB] symbols with the same name form one set. |
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211 | Space is allocated for the set in the text section, and each set |
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212 | element's value is stored into one word of the space. |
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213 | The first word of the space is the length of the set (number of elements). |
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214 | |||
215 | The address of the set is made into an N_SETV symbol |
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216 | whose name is the same as the name of the set. |
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217 | This symbol acts like a N_DATA global symbol |
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218 | in that it can satisfy undefined external references. */ |
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219 | |||
220 | /* These appear as input to LD, in a .o file. */ |
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221 | #define N_SETA 0x14 /* Absolute set element symbol */ |
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222 | #define N_SETT 0x16 /* Text set element symbol */ |
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223 | #define N_SETD 0x18 /* Data set element symbol */ |
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224 | #define N_SETB 0x1A /* Bss set element symbol */ |
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225 | |||
226 | /* This is output from LD. */ |
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227 | #define N_SETV 0x1C /* Pointer to set vector in data area. */ |
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228 | |||
229 | #if !defined (N_RELOCATION_INFO_DECLARED) |
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230 | /* This structure describes a single relocation to be performed. |
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231 | The text-relocation section of the file is a vector of these structures, |
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232 | all of which apply to the text section. |
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233 | Likewise, the data-relocation section applies to the data section. */ |
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234 | |||
235 | struct relocation_info |
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236 | { |
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237 | /* Address (within segment) to be relocated. */ |
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238 | int r_address; |
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239 | /* The meaning of r_symbolnum depends on r_extern. */ |
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240 | unsigned int r_symbolnum:24; |
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241 | /* Nonzero means value is a pc-relative offset |
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242 | and it should be relocated for changes in its own address |
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243 | as well as for changes in the symbol or section specified. */ |
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244 | unsigned int r_pcrel:1; |
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245 | /* Length (as exponent of 2) of the field to be relocated. |
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246 | Thus, a value of 2 indicates 1<<2 bytes. */ |
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247 | unsigned int r_length:2; |
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248 | /* 1 => relocate with value of symbol. |
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249 | r_symbolnum is the index of the symbol |
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250 | in file's the symbol table. |
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251 | |||
252 | r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS |
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253 | (the N_EXT bit may be set also, but signifies nothing). */ |
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254 | unsigned int r_extern:1; |
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255 | /* Four bits that aren't used, but when writing an object file |
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256 | it is desirable to clear them. */ |
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257 | #ifdef NS32K |
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258 | unsigned r_bsr:1; |
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259 | unsigned r_disp:1; |
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260 | unsigned r_pad:2; |
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261 | #else |
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262 | unsigned int r_pad:4; |
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263 | #endif |
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264 | }; |
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265 | #endif /* no N_RELOCATION_INFO_DECLARED. */ |
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266 | |||
267 | |||
268 | #endif /* __A_OUT_GNU_H__ */ |