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5191 | serge | 1 | /* IBM RS/6000 "XCOFF64" file definitions for BFD. |
6324 | serge | 2 | Copyright (C) 2000-2015 Free Software Foundation, Inc. |
5191 | serge | 3 | |
4 | This program is free software; you can redistribute it and/or modify |
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5 | it under the terms of the GNU General Public License as published by |
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6 | the Free Software Foundation; either version 3 of the License, or |
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7 | (at your option) any later version. |
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8 | |||
9 | This program is distributed in the hope that it will be useful, |
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10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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12 | GNU General Public License for more details. |
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13 | |||
14 | You should have received a copy of the GNU General Public License |
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15 | along with this program; if not, write to the Free Software |
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16 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
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17 | MA 02110-1301, USA. */ |
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18 | |||
19 | /********************** FILE HEADER **********************/ |
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20 | |||
21 | struct external_filehdr |
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22 | { |
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23 | char f_magic[2]; /* magic number */ |
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24 | char f_nscns[2]; /* number of sections */ |
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25 | char f_timdat[4]; /* time & date stamp */ |
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26 | char f_symptr[8]; /* file pointer to symtab */ |
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27 | char f_opthdr[2]; /* sizeof(optional hdr) */ |
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28 | char f_flags[2]; /* flags */ |
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29 | char f_nsyms[4]; /* number of symtab entries */ |
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30 | }; |
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31 | |||
32 | /* IBM RS/6000. */ |
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33 | #define U803XTOCMAGIC 0757 /* Aix 4.3 64-bit XCOFF */ |
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34 | #define U64_TOCMAGIC 0767 /* AIX 5+ 64-bit XCOFF */ |
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35 | #define BADMAG(x) ((x).f_magic != U803XTOCMAGIC && (x).f_magic != U64_TOCMAGIC) |
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36 | |||
37 | #define FILHDR struct external_filehdr |
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38 | #define FILHSZ 24 |
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39 | |||
40 | /********************** AOUT "OPTIONAL HEADER" **********************/ |
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41 | |||
42 | typedef struct |
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43 | { |
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44 | unsigned char magic[2]; /* type of file */ |
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45 | unsigned char vstamp[2]; /* version stamp */ |
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46 | unsigned char o_debugger[4]; /* reserved */ |
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47 | unsigned char text_start[8]; /* base of text used for this file */ |
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48 | unsigned char data_start[8]; /* base of data used for this file */ |
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49 | unsigned char o_toc[8]; /* address of TOC */ |
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50 | unsigned char o_snentry[2]; /* section number of entry point */ |
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51 | unsigned char o_sntext[2]; /* section number of .text section */ |
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52 | unsigned char o_sndata[2]; /* section number of .data section */ |
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53 | unsigned char o_sntoc[2]; /* section number of TOC */ |
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54 | unsigned char o_snloader[2]; /* section number of .loader section */ |
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55 | unsigned char o_snbss[2]; /* section number of .bss section */ |
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56 | unsigned char o_algntext[2]; /* .text alignment */ |
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57 | unsigned char o_algndata[2]; /* .data alignment */ |
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58 | unsigned char o_modtype[2]; /* module type (??) */ |
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59 | unsigned char o_cputype[2]; /* cpu type */ |
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60 | unsigned char o_resv2[4]; /* reserved */ |
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61 | unsigned char tsize[8]; /* text size bytes, padded to FW bdry */ |
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62 | unsigned char dsize[8]; /* initialized data " " */ |
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63 | unsigned char bsize[8]; /* uninitialized data " " */ |
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64 | unsigned char entry[8]; /* entry pt. */ |
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65 | unsigned char o_maxstack[8]; /* max stack size (??) */ |
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66 | unsigned char o_maxdata[8]; /* max data size (??) */ |
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67 | unsigned char o_resv3[16]; /* reserved */ |
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68 | } |
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69 | AOUTHDR; |
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70 | |||
71 | #define AOUTSZ 120 |
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72 | #define SMALL_AOUTSZ (0) |
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73 | #define AOUTHDRSZ 72 |
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74 | |||
75 | /********************** SECTION HEADER **********************/ |
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76 | |||
77 | struct external_scnhdr |
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78 | { |
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79 | char s_name[8]; /* section name */ |
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80 | char s_paddr[8]; /* physical address, aliased s_nlib */ |
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81 | char s_vaddr[8]; /* virtual address */ |
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82 | char s_size[8]; /* section size */ |
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83 | char s_scnptr[8]; /* file ptr to raw data for section */ |
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84 | char s_relptr[8]; /* file ptr to relocation */ |
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85 | char s_lnnoptr[8]; /* file ptr to line numbers */ |
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86 | char s_nreloc[4]; /* number of relocation entries */ |
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87 | char s_nlnno[4]; /* number of line number entries*/ |
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88 | char s_flags[4]; /* flags */ |
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89 | char s_pad[4]; /* padding */ |
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90 | }; |
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91 | |||
92 | #define SCNHDR struct external_scnhdr |
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93 | |||
94 | #define SCNHSZ 72 |
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95 | |||
96 | /********************** LINE NUMBERS **********************/ |
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97 | |||
98 | /* 1 line number entry for every "breakpointable" source line in a section. |
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99 | Line numbers are grouped on a per function basis; first entry in a function |
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100 | grouping will have l_lnno = 0 and in place of physical address will be the |
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101 | symbol table index of the function name. */ |
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102 | |||
103 | struct external_lineno |
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104 | { |
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105 | union |
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106 | { |
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107 | char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/ |
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108 | char l_paddr[8]; /* (physical) address of line number */ |
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109 | } l_addr; |
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110 | |||
111 | char l_lnno[4]; /* line number */ |
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112 | }; |
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113 | |||
114 | #define LINENO struct external_lineno |
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115 | |||
116 | #define LINESZ 12 |
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117 | |||
118 | /********************** SYMBOLS **********************/ |
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119 | |||
120 | #define E_SYMNMLEN 8 /* # characters in a symbol name */ |
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121 | #define E_FILNMLEN 14 /* # characters in a file name */ |
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122 | #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ |
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123 | |||
124 | struct external_syment |
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125 | { |
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126 | char e_value[8]; |
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127 | char e_offset[4]; |
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128 | char e_scnum[2]; |
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129 | char e_type[2]; |
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130 | char e_sclass[1]; |
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131 | char e_numaux[1]; |
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132 | }; |
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133 | |||
134 | #define N_BTMASK (017) |
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135 | #define N_TMASK (060) |
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136 | #define N_BTSHFT (4) |
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137 | #define N_TSHIFT (2) |
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138 | |||
139 | union external_auxent |
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140 | { |
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141 | struct { |
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142 | union { |
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143 | struct { |
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144 | char x_lnno[4]; /* declaration line number */ |
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145 | char x_size[2]; /* str/union/array size */ |
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146 | } x_lnsz; |
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147 | struct { |
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148 | char x_lnnoptr[8];/* ptr to fcn line */ |
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149 | char x_fsize[4]; /* size of function */ |
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150 | char x_endndx[4]; /* entry ndx past block end */ |
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151 | } x_fcn; |
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152 | } x_fcnary; |
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153 | } x_sym; |
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154 | |||
155 | struct { |
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156 | union { |
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157 | char x_fname[E_FILNMLEN]; |
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158 | struct { |
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159 | char x_zeroes[4]; |
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160 | char x_offset[4]; |
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161 | char x_pad[6]; |
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162 | } x_n; |
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163 | } x_n; |
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164 | unsigned char x_ftype[1]; |
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165 | unsigned char x_resv[2]; |
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166 | } x_file; |
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167 | |||
168 | struct { |
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169 | char x_exptr[8]; |
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170 | char x_fsize[4]; |
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171 | char x_endndx[4]; |
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172 | char x_pad[1]; |
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173 | } x_except; |
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174 | |||
175 | struct { |
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176 | unsigned char x_scnlen_lo[4]; |
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177 | unsigned char x_parmhash[4]; |
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178 | unsigned char x_snhash[2]; |
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179 | unsigned char x_smtyp[1]; |
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180 | unsigned char x_smclas[1]; |
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181 | unsigned char x_scnlen_hi[4]; |
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182 | unsigned char x_pad[1]; |
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183 | } x_csect; |
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184 | |||
185 | struct { |
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186 | char x_pad[17]; |
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187 | char x_auxtype[1]; |
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188 | } x_auxtype; |
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189 | }; |
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190 | |||
191 | #define SYMENT struct external_syment |
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192 | #define SYMESZ 18 |
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193 | #define AUXENT union external_auxent |
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194 | #define AUXESZ 18 |
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195 | #define DBXMASK 0x80 /* for dbx storage mask */ |
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196 | #define SYMNAME_IN_DEBUG(symptr) ((symptr)->n_sclass & DBXMASK) |
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197 | |||
198 | /* Values for auxtype field in XCOFF64, taken from AIX 4.3 sym.h. */ |
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199 | #define _AUX_EXCEPT 255 |
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200 | #define _AUX_FCN 254 |
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201 | #define _AUX_SYM 253 |
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202 | #define _AUX_FILE 252 |
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203 | #define _AUX_CSECT 251 |
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204 | |||
205 | /********************** RELOCATION DIRECTIVES **********************/ |
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206 | |||
207 | struct external_reloc |
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208 | { |
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209 | char r_vaddr[8]; |
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210 | char r_symndx[4]; |
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211 | char r_size[1]; |
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212 | char r_type[1]; |
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213 | }; |
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214 | |||
215 | #define RELOC struct external_reloc |
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216 | #define RELSZ 14 |
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217 | |||
218 | #define DEFAULT_DATA_SECTION_ALIGNMENT 4 |
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219 | #define DEFAULT_BSS_SECTION_ALIGNMENT 4 |
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220 | #define DEFAULT_TEXT_SECTION_ALIGNMENT 4 |
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221 | /* For new sections we havn't heard of before */ |
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222 | #define DEFAULT_SECTION_ALIGNMENT 4 |
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223 | |||
224 | /* The ldhdr structure. This appears at the start of the .loader |
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225 | section. */ |
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226 | |||
227 | struct external_ldhdr |
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228 | { |
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229 | bfd_byte l_version[4]; |
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230 | bfd_byte l_nsyms[4]; |
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231 | bfd_byte l_nreloc[4]; |
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232 | bfd_byte l_istlen[4]; |
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233 | bfd_byte l_nimpid[4]; |
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234 | bfd_byte l_stlen[4]; |
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235 | bfd_byte l_impoff[8]; |
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236 | bfd_byte l_stoff[8]; |
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237 | bfd_byte l_symoff[8]; |
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238 | bfd_byte l_rldoff[8]; |
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239 | }; |
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240 | #define LDHDRSZ (56) |
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241 | |||
242 | struct external_ldsym |
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243 | { |
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244 | bfd_byte l_value[8]; |
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245 | bfd_byte l_offset[4]; |
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246 | bfd_byte l_scnum[2]; |
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247 | bfd_byte l_smtype[1]; |
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248 | bfd_byte l_smclas[1]; |
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249 | bfd_byte l_ifile[4]; |
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250 | bfd_byte l_parm[4]; |
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251 | }; |
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252 | |||
253 | #define LDSYMSZ (24) |
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254 | |||
255 | struct external_ldrel |
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256 | { |
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257 | bfd_byte l_vaddr[8]; |
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258 | bfd_byte l_rtype[2]; |
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259 | bfd_byte l_rsecnm[2]; |
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260 | bfd_byte l_symndx[4]; |
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261 | }; |
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262 | |||
263 | #define LDRELSZ (16) |
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264 | |||
265 | struct external_exceptab |
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266 | { |
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267 | union { |
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268 | bfd_byte e_symndx[4]; |
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269 | bfd_byte e_paddr[8]; |
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270 | } e_addr; |
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271 | bfd_byte e_lang[1]; |
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272 | bfd_byte e_reason[1]; |
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273 | }; |
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274 | |||
275 | #define EXCEPTSZ (10) |