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5191 | serge | 1 | /* coff information for 80960. Origins: Intel corp, natch. |
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6324 | serge | 3 | Copyright (C) 2001-2015 Free Software Foundation, Inc. |
5191 | serge | 4 | |
5 | This program is free software; you can redistribute it and/or modify |
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6 | it under the terms of the GNU General Public License as published by |
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7 | the Free Software Foundation; either version 3 of the License, or |
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8 | (at your option) any later version. |
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9 | |||
10 | This program is distributed in the hope that it will be useful, |
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11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 | GNU General Public License for more details. |
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14 | |||
15 | You should have received a copy of the GNU General Public License |
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16 | along with this program; if not, write to the Free Software |
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17 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
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18 | MA 02110-1301, USA. */ |
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19 | |||
20 | /* NOTE: Tagentries (cf TAGBITS) are no longer used by the 960 */ |
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21 | |||
22 | /********************** FILE HEADER **********************/ |
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23 | |||
24 | struct external_filehdr |
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25 | { |
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26 | char f_magic[2]; /* magic number */ |
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27 | char f_nscns[2]; /* number of sections */ |
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28 | char f_timdat[4]; /* time & date stamp */ |
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29 | char f_symptr[4]; /* file pointer to symtab */ |
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30 | char f_nsyms[4]; /* number of symtab entries */ |
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31 | char f_opthdr[2]; /* sizeof(optional hdr) */ |
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32 | char f_flags[2]; /* flags */ |
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33 | }; |
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34 | |||
35 | #define OMAGIC (0407) /* old impure format. data immediately |
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36 | follows text. both sections are rw. */ |
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37 | #define NMAGIC (0410) /* split i&d, read-only text */ |
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38 | |||
39 | /* |
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40 | * Intel 80960 (I960) processor flags. |
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41 | * F_I960TYPE == mask for processor type field. |
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42 | */ |
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43 | |||
44 | #define F_I960TYPE (0xf000) |
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45 | #define F_I960CORE (0x1000) |
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46 | #define F_I960KB (0x2000) |
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47 | #define F_I960SB (0x2000) |
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48 | #define F_I960MC (0x3000) |
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49 | #define F_I960XA (0x4000) |
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50 | #define F_I960CA (0x5000) |
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51 | #define F_I960KA (0x6000) |
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52 | #define F_I960SA (0x6000) |
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53 | #define F_I960JX (0x7000) |
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54 | #define F_I960HX (0x8000) |
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55 | |||
56 | |||
57 | /** i80960 Magic Numbers |
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58 | */ |
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59 | |||
60 | #define I960ROMAGIC (0x160) /* read-only text segments */ |
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61 | #define I960RWMAGIC (0x161) /* read-write text segments */ |
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62 | |||
63 | #define I960BADMAG(x) (((x).f_magic!=I960ROMAGIC) && ((x).f_magic!=I960RWMAGIC)) |
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64 | |||
65 | #define FILHDR struct external_filehdr |
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66 | #define FILHSZ 20 |
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67 | |||
68 | /********************** AOUT "OPTIONAL HEADER" **********************/ |
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69 | |||
70 | typedef struct |
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71 | { |
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72 | unsigned long phys_addr; |
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73 | unsigned long bitarray; |
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74 | } TAGBITS; |
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75 | |||
76 | typedef struct |
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77 | { |
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78 | char magic[2]; /* type of file */ |
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79 | char vstamp[2]; /* version stamp */ |
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80 | char tsize[4]; /* text size in bytes, padded to FW bdry*/ |
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81 | char dsize[4]; /* initialized data " " */ |
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82 | char bsize[4]; /* uninitialized data " " */ |
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83 | char entry[4]; /* entry pt. */ |
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84 | char text_start[4]; /* base of text used for this file */ |
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85 | char data_start[4]; /* base of data used for this file */ |
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86 | char tagentries[4]; /* number of tag entries to follow */ |
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87 | } |
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88 | AOUTHDR; |
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89 | |||
90 | /* return a pointer to the tag bits array */ |
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91 | |||
92 | #define TAGPTR(aout) ((TAGBITS *) (&(aout.tagentries)+1)) |
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93 | |||
94 | /* compute size of a header */ |
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95 | |||
96 | /*#define AOUTSZ(aout) (sizeof(AOUTHDR)+(aout.tagentries*sizeof(TAGBITS)))*/ |
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97 | #define AOUTSZ 32 |
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98 | #define AOUTHDRSZ 32 |
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99 | |||
100 | |||
101 | /********************** SECTION HEADER **********************/ |
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102 | |||
103 | struct external_scnhdr |
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104 | { |
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105 | char s_name[8]; /* section name */ |
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106 | char s_paddr[4]; /* physical address, aliased s_nlib */ |
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107 | char s_vaddr[4]; /* virtual address */ |
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108 | char s_size[4]; /* section size */ |
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109 | char s_scnptr[4]; /* file ptr to raw data for section */ |
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110 | char s_relptr[4]; /* file ptr to relocation */ |
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111 | char s_lnnoptr[4]; /* file ptr to line numbers */ |
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112 | char s_nreloc[2]; /* number of relocation entries */ |
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113 | char s_nlnno[2]; /* number of line number entries*/ |
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114 | char s_flags[4]; /* flags */ |
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115 | char s_align[4]; /* section alignment */ |
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116 | }; |
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117 | |||
118 | |||
119 | #define SCNHDR struct external_scnhdr |
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120 | #define SCNHSZ 44 |
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121 | |||
122 | /* |
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123 | * names of "special" sections |
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124 | */ |
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125 | #define _TEXT ".text" |
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126 | #define _DATA ".data" |
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127 | #define _BSS ".bss" |
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128 | |||
129 | /********************** LINE NUMBERS **********************/ |
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130 | |||
131 | /* 1 line number entry for every "breakpointable" source line in a section. |
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132 | * Line numbers are grouped on a per function basis; first entry in a function |
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133 | * grouping will have l_lnno = 0 and in place of physical address will be the |
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134 | * symbol table index of the function name. |
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135 | */ |
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136 | struct external_lineno |
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137 | { |
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138 | union |
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139 | { |
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140 | char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/ |
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141 | char l_paddr[4]; /* (physical) address of line number */ |
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142 | } l_addr; |
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143 | |||
144 | char l_lnno[2]; /* line number */ |
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145 | char padding[2]; /* force alignment */ |
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146 | }; |
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147 | |||
148 | |||
149 | #define LINENO struct external_lineno |
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150 | #define LINESZ 8 |
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151 | |||
152 | /********************** SYMBOLS **********************/ |
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153 | |||
154 | #define E_SYMNMLEN 8 /* # characters in a symbol name */ |
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155 | #define E_FILNMLEN 14 /* # characters in a file name */ |
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156 | #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ |
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157 | |||
158 | struct external_syment |
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159 | { |
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160 | union |
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161 | { |
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162 | char e_name[E_SYMNMLEN]; |
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163 | |||
164 | struct |
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165 | { |
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166 | char e_zeroes[4]; |
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167 | char e_offset[4]; |
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168 | } e; |
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169 | } e; |
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170 | |||
171 | char e_value[4]; |
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172 | char e_scnum[2]; |
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173 | char e_flags[2]; |
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174 | char e_type[4]; |
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175 | char e_sclass[1]; |
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176 | char e_numaux[1]; |
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177 | char pad2[2]; |
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178 | }; |
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179 | |||
180 | #define N_BTMASK (0x1f) |
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181 | #define N_TMASK (0x60) |
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182 | #define N_BTSHFT (5) |
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183 | #define N_TSHIFT (2) |
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184 | |||
185 | union external_auxent |
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186 | { |
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187 | struct |
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188 | { |
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189 | char x_tagndx[4]; /* str, un, or enum tag indx */ |
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190 | |||
191 | union |
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192 | { |
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193 | struct |
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194 | { |
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195 | char x_lnno[2]; /* declaration line number */ |
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196 | char x_size[2]; /* str/union/array size */ |
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197 | } x_lnsz; |
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198 | |||
199 | char x_fsize[4]; /* size of function */ |
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200 | |||
201 | } x_misc; |
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202 | |||
203 | union |
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204 | { |
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205 | struct /* if ISFCN, tag, or .bb */ |
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206 | { |
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207 | char x_lnnoptr[4]; /* ptr to fcn line # */ |
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208 | char x_endndx[4]; /* entry ndx past block end */ |
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209 | } x_fcn; |
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210 | |||
211 | struct /* if ISARY, up to 4 dimen. */ |
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212 | { |
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213 | char x_dimen[E_DIMNUM][2]; |
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214 | } x_ary; |
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215 | |||
216 | } x_fcnary; |
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217 | |||
218 | char x_tvndx[2]; /* tv index */ |
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219 | |||
220 | } x_sym; |
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221 | |||
222 | union |
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223 | { |
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224 | char x_fname[E_FILNMLEN]; |
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225 | |||
226 | struct |
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227 | { |
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228 | char x_zeroes[4]; |
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229 | char x_offset[4]; |
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230 | } x_n; |
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231 | |||
232 | } x_file; |
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233 | |||
234 | struct |
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235 | { |
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236 | char x_scnlen[4]; /* section length */ |
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237 | char x_nreloc[2]; /* # relocation entries */ |
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238 | char x_nlinno[2]; /* # line numbers */ |
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239 | |||
240 | } x_scn; |
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241 | |||
242 | struct |
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243 | { |
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244 | char x_tvfill[4]; /* tv fill value */ |
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245 | char x_tvlen[2]; /* length of .tv */ |
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246 | char x_tvran[2][2]; /* tv range */ |
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247 | |||
248 | } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ |
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249 | |||
250 | /****************************************** |
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251 | * I960-specific *2nd* aux. entry formats |
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252 | ******************************************/ |
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253 | struct |
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254 | { |
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255 | /* This is a very old typo that keeps getting propagated. */ |
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256 | #define x_stdindx x_stindx |
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257 | char x_stindx[4]; /* sys. table entry */ |
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258 | } x_sc; /* system call entry */ |
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259 | |||
260 | struct |
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261 | { |
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262 | char x_balntry[4]; /* BAL entry point */ |
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263 | } x_bal; /* BAL-callable function */ |
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264 | |||
265 | struct |
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266 | { |
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267 | char x_timestamp[4]; /* time stamp */ |
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268 | char x_idstring[20]; /* producer identity string */ |
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269 | |||
270 | } x_ident; /* Producer ident info */ |
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271 | }; |
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272 | |||
273 | #define SYMENT struct external_syment |
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274 | #define SYMESZ 24 |
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275 | #define AUXENT union external_auxent |
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276 | #define AUXESZ 24 |
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277 | |||
278 | # define _ETEXT "_etext" |
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279 | |||
280 | /********************** RELOCATION DIRECTIVES **********************/ |
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281 | |||
282 | struct external_reloc |
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283 | { |
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284 | char r_vaddr[4]; |
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285 | char r_symndx[4]; |
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286 | char r_type[2]; |
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287 | char pad[2]; |
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288 | }; |
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289 | |||
290 | /* r_type values for the i960. */ |
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291 | |||
292 | /* The i960 uses R_RELLONG, which is defined in internal.h as 0x11. |
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293 | It is an absolute 32 bit relocation. */ |
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294 | |||
295 | #define R_IPRMED (0x19) /* 24-bit ip-relative relocation */ |
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296 | #define R_OPTCALL (0x1b) /* 32-bit optimizable call (leafproc/sysproc) */ |
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297 | #define R_OPTCALLX (0x1c) /* 64-bit optimizable call (leafproc/sysproc) */ |
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298 | |||
299 | /* The following relocation types are defined use by relaxing linkers, |
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300 | which convert 32 bit calls (which require a 64 bit instruction) |
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301 | into 24 bit calls (which require a 32 bit instruction) when |
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302 | possible. It will be possible whenever the target of the call is |
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303 | within a 24 bit range of the call instruction. |
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304 | |||
305 | It is always safe to ignore these relocations. They only serve to |
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306 | mark points which the relaxing linker will have to consider. The |
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307 | assembler must ensure that the correct code is generated even if |
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308 | the relocations are ignored. In particular, this means that the |
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309 | R_IPR13 relocation may not appear with an external symbol. */ |
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310 | |||
311 | #define R_IPR13 (0x1d) /* 13 bit ip-relative branch */ |
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312 | #define R_ALIGN (0x1e) /* alignment marker. This has no |
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313 | associated symbol. Instead, the |
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314 | r_symndx field indicates the |
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315 | require alignment at this point in |
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316 | the file. It must be a power of 2. */ |
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317 | |||
318 | #define RELOC struct external_reloc |
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319 | #define RELSZ 12 |
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320 |