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5191 | serge | 1 | /* ECOFF support on Alpha machines. |
2 | coff/ecoff.h must be included before this file. |
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3 | |||
6324 | serge | 4 | Copyright (C) 2001-2015 Free Software Foundation, Inc. |
5191 | serge | 5 | |
6 | This program is free software; you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation; either version 3 of the License, or |
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9 | (at your option) any later version. |
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10 | |||
11 | This program is distributed in the hope that it will be useful, |
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12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | GNU General Public License for more details. |
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15 | |||
16 | You should have received a copy of the GNU General Public License |
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17 | along with this program; if not, write to the Free Software |
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18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
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19 | MA 02110-1301, USA. */ |
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20 | |||
21 | /********************** FILE HEADER **********************/ |
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22 | |||
23 | struct external_filehdr |
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24 | { |
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25 | unsigned char f_magic[2]; /* magic number */ |
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26 | unsigned char f_nscns[2]; /* number of sections */ |
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27 | unsigned char f_timdat[4]; /* time & date stamp */ |
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28 | unsigned char f_symptr[8]; /* file pointer to symtab */ |
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29 | unsigned char f_nsyms[4]; /* number of symtab entries */ |
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30 | unsigned char f_opthdr[2]; /* sizeof(optional hdr) */ |
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31 | unsigned char f_flags[2]; /* flags */ |
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32 | }; |
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33 | |||
34 | /* Magic numbers are defined in coff/ecoff.h. */ |
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35 | #define ALPHA_ECOFF_BADMAG(x) \ |
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36 | ((x).f_magic != ALPHA_MAGIC && (x).f_magic != ALPHA_MAGIC_BSD) |
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37 | |||
38 | #define ALPHA_ECOFF_COMPRESSEDMAG(x) \ |
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39 | ((x).f_magic == ALPHA_MAGIC_COMPRESSED) |
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40 | |||
41 | /* The object type is encoded in the f_flags. */ |
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42 | #define F_ALPHA_OBJECT_TYPE_MASK 0x3000 |
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43 | #define F_ALPHA_NO_SHARED 0x1000 |
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44 | #define F_ALPHA_SHARABLE 0x2000 |
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45 | #define F_ALPHA_CALL_SHARED 0x3000 |
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46 | |||
47 | #define FILHDR struct external_filehdr |
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48 | #define FILHSZ 24 |
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49 | |||
50 | /********************** AOUT "OPTIONAL HEADER" **********************/ |
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51 | |||
52 | typedef struct external_aouthdr |
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53 | { |
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54 | unsigned char magic[2]; /* type of file */ |
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55 | unsigned char vstamp[2]; /* version stamp */ |
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56 | unsigned char bldrev[2]; /* ?? */ |
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57 | unsigned char padding[2]; /* pad to quadword boundary */ |
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58 | unsigned char tsize[8]; /* text size in bytes */ |
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59 | unsigned char dsize[8]; /* initialized data " " */ |
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60 | unsigned char bsize[8]; /* uninitialized data " " */ |
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61 | unsigned char entry[8]; /* entry pt. */ |
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62 | unsigned char text_start[8]; /* base of text used for this file */ |
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63 | unsigned char data_start[8]; /* base of data used for this file */ |
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64 | unsigned char bss_start[8]; /* base of bss used for this file */ |
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65 | unsigned char gprmask[4]; /* bitmask of general registers used */ |
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66 | unsigned char fprmask[4]; /* bitmask of floating point registers used */ |
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67 | unsigned char gp_value[8]; /* value for gp register */ |
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68 | } AOUTHDR; |
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69 | |||
70 | /* compute size of a header */ |
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71 | |||
72 | #define AOUTSZ 80 |
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73 | #define AOUTHDRSZ 80 |
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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 | unsigned char s_name[8]; /* section name */ |
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80 | unsigned char s_paddr[8]; /* physical address, aliased s_nlib */ |
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81 | unsigned char s_vaddr[8]; /* virtual address */ |
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82 | unsigned char s_size[8]; /* section size */ |
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83 | unsigned char s_scnptr[8]; /* file ptr to raw data for section */ |
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84 | unsigned char s_relptr[8]; /* file ptr to relocation */ |
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85 | unsigned char s_lnnoptr[8]; /* file ptr to line numbers */ |
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86 | unsigned char s_nreloc[2]; /* number of relocation entries */ |
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87 | unsigned char s_nlnno[2]; /* number of line number entries*/ |
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88 | unsigned char s_flags[4]; /* flags */ |
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89 | }; |
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90 | |||
91 | #define SCNHDR struct external_scnhdr |
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92 | #define SCNHSZ 64 |
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93 | |||
94 | /********************** RELOCATION DIRECTIVES **********************/ |
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95 | |||
96 | struct external_reloc |
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97 | { |
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98 | unsigned char r_vaddr[8]; |
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99 | unsigned char r_symndx[4]; |
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100 | unsigned char r_bits[4]; |
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101 | }; |
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102 | |||
103 | #define RELOC struct external_reloc |
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104 | #define RELSZ 16 |
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105 | |||
106 | /* Constants to unpack the r_bits field. The Alpha seems to always be |
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107 | little endian, so I haven't bothered to define big endian variants |
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108 | of these. */ |
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109 | |||
110 | #define RELOC_BITS0_TYPE_LITTLE 0xff |
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111 | #define RELOC_BITS0_TYPE_SH_LITTLE 0 |
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112 | |||
113 | #define RELOC_BITS1_EXTERN_LITTLE 0x01 |
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114 | |||
115 | #define RELOC_BITS1_OFFSET_LITTLE 0x7e |
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116 | #define RELOC_BITS1_OFFSET_SH_LITTLE 1 |
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117 | |||
118 | #define RELOC_BITS1_RESERVED_LITTLE 0x80 |
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119 | #define RELOC_BITS1_RESERVED_SH_LITTLE 7 |
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120 | #define RELOC_BITS2_RESERVED_LITTLE 0xff |
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121 | #define RELOC_BITS2_RESERVED_SH_LEFT_LITTLE 1 |
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122 | #define RELOC_BITS3_RESERVED_LITTLE 0x03 |
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123 | #define RELOC_BITS3_RESERVED_SH_LEFT_LITTLE 9 |
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124 | |||
125 | #define RELOC_BITS3_SIZE_LITTLE 0xfc |
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126 | #define RELOC_BITS3_SIZE_SH_LITTLE 2 |
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127 | |||
128 | /* The r_type field in a reloc is one of the following values. */ |
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129 | #define ALPHA_R_IGNORE 0 |
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130 | #define ALPHA_R_REFLONG 1 |
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131 | #define ALPHA_R_REFQUAD 2 |
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132 | #define ALPHA_R_GPREL32 3 |
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133 | #define ALPHA_R_LITERAL 4 |
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134 | #define ALPHA_R_LITUSE 5 |
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135 | #define ALPHA_R_GPDISP 6 |
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136 | #define ALPHA_R_BRADDR 7 |
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137 | #define ALPHA_R_HINT 8 |
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138 | #define ALPHA_R_SREL16 9 |
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139 | #define ALPHA_R_SREL32 10 |
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140 | #define ALPHA_R_SREL64 11 |
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141 | #define ALPHA_R_OP_PUSH 12 |
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142 | #define ALPHA_R_OP_STORE 13 |
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143 | #define ALPHA_R_OP_PSUB 14 |
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144 | #define ALPHA_R_OP_PRSHIFT 15 |
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145 | #define ALPHA_R_GPVALUE 16 |
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146 | #define ALPHA_R_GPRELHIGH 17 |
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147 | #define ALPHA_R_GPRELLOW 18 |
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148 | #define ALPHA_R_IMMED 19 |
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149 | |||
150 | /* Overloaded reloc value used by Net- and OpenBSD. */ |
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151 | #define ALPHA_R_LITERALSLEAZY 17 |
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152 | |||
153 | /* With ALPHA_R_LITUSE, the r_size field is one of the following values. */ |
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154 | #define ALPHA_R_LU_BASE 1 |
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155 | #define ALPHA_R_LU_BYTOFF 2 |
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156 | #define ALPHA_R_LU_JSR 3 |
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157 | |||
158 | /* With ALPHA_R_IMMED, the r_size field is one of the following values. */ |
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159 | #define ALPHA_R_IMMED_GP_16 1 |
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160 | #define ALPHA_R_IMMED_GP_HI32 2 |
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161 | #define ALPHA_R_IMMED_SCN_HI32 3 |
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162 | #define ALPHA_R_IMMED_BR_HI32 4 |
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163 | #define ALPHA_R_IMMED_LO32 5 |
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164 | |||
165 | /********************** SYMBOLIC INFORMATION **********************/ |
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166 | |||
167 | /* Written by John Gilmore. */ |
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168 | |||
169 | /* ECOFF uses COFF-like section structures, but its own symbol format. |
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170 | This file defines the symbol format in fields whose size and alignment |
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171 | will not vary on different host systems. */ |
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172 | |||
173 | /* File header as a set of bytes */ |
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174 | |||
175 | struct hdr_ext |
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176 | { |
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177 | unsigned char h_magic[2]; |
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178 | unsigned char h_vstamp[2]; |
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179 | unsigned char h_ilineMax[4]; |
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180 | unsigned char h_idnMax[4]; |
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181 | unsigned char h_ipdMax[4]; |
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182 | unsigned char h_isymMax[4]; |
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183 | unsigned char h_ioptMax[4]; |
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184 | unsigned char h_iauxMax[4]; |
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185 | unsigned char h_issMax[4]; |
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186 | unsigned char h_issExtMax[4]; |
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187 | unsigned char h_ifdMax[4]; |
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188 | unsigned char h_crfd[4]; |
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189 | unsigned char h_iextMax[4]; |
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190 | unsigned char h_cbLine[8]; |
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191 | unsigned char h_cbLineOffset[8]; |
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192 | unsigned char h_cbDnOffset[8]; |
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193 | unsigned char h_cbPdOffset[8]; |
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194 | unsigned char h_cbSymOffset[8]; |
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195 | unsigned char h_cbOptOffset[8]; |
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196 | unsigned char h_cbAuxOffset[8]; |
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197 | unsigned char h_cbSsOffset[8]; |
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198 | unsigned char h_cbSsExtOffset[8]; |
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199 | unsigned char h_cbFdOffset[8]; |
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200 | unsigned char h_cbRfdOffset[8]; |
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201 | unsigned char h_cbExtOffset[8]; |
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202 | }; |
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203 | |||
204 | /* File descriptor external record */ |
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205 | |||
206 | struct fdr_ext |
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207 | { |
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208 | unsigned char f_adr[8]; |
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209 | unsigned char f_cbLineOffset[8]; |
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210 | unsigned char f_cbLine[8]; |
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211 | unsigned char f_cbSs[8]; |
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212 | unsigned char f_rss[4]; |
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213 | unsigned char f_issBase[4]; |
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214 | unsigned char f_isymBase[4]; |
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215 | unsigned char f_csym[4]; |
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216 | unsigned char f_ilineBase[4]; |
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217 | unsigned char f_cline[4]; |
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218 | unsigned char f_ioptBase[4]; |
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219 | unsigned char f_copt[4]; |
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220 | unsigned char f_ipdFirst[4]; |
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221 | unsigned char f_cpd[4]; |
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222 | unsigned char f_iauxBase[4]; |
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223 | unsigned char f_caux[4]; |
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224 | unsigned char f_rfdBase[4]; |
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225 | unsigned char f_crfd[4]; |
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226 | unsigned char f_bits1[1]; |
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227 | unsigned char f_bits2[3]; |
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228 | unsigned char f_padding[4]; |
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229 | }; |
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230 | |||
231 | #define FDR_BITS1_LANG_BIG 0xF8 |
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232 | #define FDR_BITS1_LANG_SH_BIG 3 |
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233 | #define FDR_BITS1_LANG_LITTLE 0x1F |
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234 | #define FDR_BITS1_LANG_SH_LITTLE 0 |
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235 | |||
236 | #define FDR_BITS1_FMERGE_BIG 0x04 |
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237 | #define FDR_BITS1_FMERGE_LITTLE 0x20 |
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238 | |||
239 | #define FDR_BITS1_FREADIN_BIG 0x02 |
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240 | #define FDR_BITS1_FREADIN_LITTLE 0x40 |
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241 | |||
242 | #define FDR_BITS1_FBIGENDIAN_BIG 0x01 |
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243 | #define FDR_BITS1_FBIGENDIAN_LITTLE 0x80 |
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244 | |||
245 | #define FDR_BITS2_GLEVEL_BIG 0xC0 |
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246 | #define FDR_BITS2_GLEVEL_SH_BIG 6 |
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247 | #define FDR_BITS2_GLEVEL_LITTLE 0x03 |
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248 | #define FDR_BITS2_GLEVEL_SH_LITTLE 0 |
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249 | |||
250 | /* We ignore the `reserved' field in bits2. */ |
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251 | |||
252 | /* Procedure descriptor external record */ |
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253 | |||
254 | struct pdr_ext { |
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255 | unsigned char p_adr[8]; |
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256 | unsigned char p_cbLineOffset[8]; |
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257 | unsigned char p_isym[4]; |
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258 | unsigned char p_iline[4]; |
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259 | unsigned char p_regmask[4]; |
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260 | unsigned char p_regoffset[4]; |
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261 | unsigned char p_iopt[4]; |
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262 | unsigned char p_fregmask[4]; |
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263 | unsigned char p_fregoffset[4]; |
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264 | unsigned char p_frameoffset[4]; |
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265 | unsigned char p_lnLow[4]; |
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266 | unsigned char p_lnHigh[4]; |
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267 | unsigned char p_gp_prologue[1]; |
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268 | unsigned char p_bits1[1]; |
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269 | unsigned char p_bits2[1]; |
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270 | unsigned char p_localoff[1]; |
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271 | unsigned char p_framereg[2]; |
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272 | unsigned char p_pcreg[2]; |
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273 | }; |
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274 | |||
275 | #define PDR_BITS1_GP_USED_BIG 0x80 |
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276 | #define PDR_BITS1_REG_FRAME_BIG 0x40 |
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277 | #define PDR_BITS1_PROF_BIG 0x20 |
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278 | #define PDR_BITS1_RESERVED_BIG 0x1f |
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279 | #define PDR_BITS1_RESERVED_SH_LEFT_BIG 8 |
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280 | #define PDR_BITS2_RESERVED_BIG 0xff |
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281 | #define PDR_BITS2_RESERVED_SH_BIG 0 |
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282 | |||
283 | #define PDR_BITS1_GP_USED_LITTLE 0x01 |
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284 | #define PDR_BITS1_REG_FRAME_LITTLE 0x02 |
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285 | #define PDR_BITS1_PROF_LITTLE 0x04 |
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286 | #define PDR_BITS1_RESERVED_LITTLE 0xf8 |
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287 | #define PDR_BITS1_RESERVED_SH_LITTLE 3 |
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288 | #define PDR_BITS2_RESERVED_LITTLE 0xff |
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289 | #define PDR_BITS2_RESERVED_SH_LEFT_LITTLE 5 |
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290 | |||
291 | /* Line numbers */ |
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292 | |||
293 | struct line_ext { |
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294 | unsigned char l_line[4]; |
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295 | }; |
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296 | |||
297 | /* Symbol external record */ |
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298 | |||
299 | struct sym_ext { |
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300 | unsigned char s_value[8]; |
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301 | unsigned char s_iss[4]; |
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302 | unsigned char s_bits1[1]; |
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303 | unsigned char s_bits2[1]; |
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304 | unsigned char s_bits3[1]; |
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305 | unsigned char s_bits4[1]; |
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306 | }; |
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307 | |||
308 | #define SYM_BITS1_ST_BIG 0xFC |
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309 | #define SYM_BITS1_ST_SH_BIG 2 |
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310 | #define SYM_BITS1_ST_LITTLE 0x3F |
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311 | #define SYM_BITS1_ST_SH_LITTLE 0 |
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312 | |||
313 | #define SYM_BITS1_SC_BIG 0x03 |
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314 | #define SYM_BITS1_SC_SH_LEFT_BIG 3 |
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315 | #define SYM_BITS1_SC_LITTLE 0xC0 |
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316 | #define SYM_BITS1_SC_SH_LITTLE 6 |
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317 | |||
318 | #define SYM_BITS2_SC_BIG 0xE0 |
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319 | #define SYM_BITS2_SC_SH_BIG 5 |
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320 | #define SYM_BITS2_SC_LITTLE 0x07 |
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321 | #define SYM_BITS2_SC_SH_LEFT_LITTLE 2 |
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322 | |||
323 | #define SYM_BITS2_RESERVED_BIG 0x10 |
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324 | #define SYM_BITS2_RESERVED_LITTLE 0x08 |
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325 | |||
326 | #define SYM_BITS2_INDEX_BIG 0x0F |
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327 | #define SYM_BITS2_INDEX_SH_LEFT_BIG 16 |
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328 | #define SYM_BITS2_INDEX_LITTLE 0xF0 |
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329 | #define SYM_BITS2_INDEX_SH_LITTLE 4 |
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330 | |||
331 | #define SYM_BITS3_INDEX_SH_LEFT_BIG 8 |
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332 | #define SYM_BITS3_INDEX_SH_LEFT_LITTLE 4 |
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333 | |||
334 | #define SYM_BITS4_INDEX_SH_LEFT_BIG 0 |
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335 | #define SYM_BITS4_INDEX_SH_LEFT_LITTLE 12 |
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336 | |||
337 | /* External symbol external record */ |
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338 | |||
339 | struct ext_ext { |
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340 | struct sym_ext es_asym; |
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341 | unsigned char es_bits1[1]; |
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342 | unsigned char es_bits2[3]; |
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343 | unsigned char es_ifd[4]; |
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344 | }; |
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345 | |||
346 | #define EXT_BITS1_JMPTBL_BIG 0x80 |
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347 | #define EXT_BITS1_JMPTBL_LITTLE 0x01 |
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348 | |||
349 | #define EXT_BITS1_COBOL_MAIN_BIG 0x40 |
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350 | #define EXT_BITS1_COBOL_MAIN_LITTLE 0x02 |
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351 | |||
352 | #define EXT_BITS1_WEAKEXT_BIG 0x20 |
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353 | #define EXT_BITS1_WEAKEXT_LITTLE 0x04 |
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354 | |||
355 | /* Dense numbers external record */ |
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356 | |||
357 | struct dnr_ext { |
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358 | unsigned char d_rfd[4]; |
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359 | unsigned char d_index[4]; |
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360 | }; |
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361 | |||
362 | /* Relative file descriptor */ |
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363 | |||
364 | struct rfd_ext { |
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365 | unsigned char rfd[4]; |
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366 | }; |
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367 | |||
368 | /* Optimizer symbol external record */ |
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369 | |||
370 | struct opt_ext { |
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371 | unsigned char o_bits1[1]; |
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372 | unsigned char o_bits2[1]; |
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373 | unsigned char o_bits3[1]; |
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374 | unsigned char o_bits4[1]; |
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375 | struct rndx_ext o_rndx; |
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376 | unsigned char o_offset[4]; |
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377 | }; |
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378 | |||
379 | #define OPT_BITS2_VALUE_SH_LEFT_BIG 16 |
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380 | #define OPT_BITS2_VALUE_SH_LEFT_LITTLE 0 |
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381 | |||
382 | #define OPT_BITS3_VALUE_SH_LEFT_BIG 8 |
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383 | #define OPT_BITS3_VALUE_SH_LEFT_LITTLE 8 |
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384 | |||
385 | #define OPT_BITS4_VALUE_SH_LEFT_BIG 0 |
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386 | #define OPT_BITS4_VALUE_SH_LEFT_LITTLE 16 |