1 | /*
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2 | * COFF file handling for TCC
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3 | *
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4 | * Copyright (c) 2003, 2004 TK
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5 | * Copyright (c) 2004 Fabrice Bellard
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6 | *
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7 | * This library is free software; you can redistribute it and/or
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8 | * modify it under the terms of the GNU Lesser General Public
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9 | * License as published by the Free Software Foundation; either
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10 | * version 2 of the License, or (at your option) any later version.
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11 | *
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12 | * This library is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 | * Lesser General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU Lesser General Public
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18 | * License along with this library; if not, write to the Free Software
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19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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20 | */
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21 |
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22 | #include "tcc.h"
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23 |
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24 | #define MAXNSCNS 255 /* MAXIMUM NUMBER OF SECTIONS */
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25 | #define MAX_STR_TABLE 1000000
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26 | AOUTHDR o_filehdr; /* OPTIONAL (A.OUT) FILE HEADER */
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27 |
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28 | SCNHDR section_header[MAXNSCNS];
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29 |
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30 | #define MAX_FUNCS 1000
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31 | #define MAX_FUNC_NAME_LENGTH 128
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32 |
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33 | int nFuncs;
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34 | char Func[MAX_FUNCS][MAX_FUNC_NAME_LENGTH];
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35 | char AssociatedFile[MAX_FUNCS][MAX_FUNC_NAME_LENGTH];
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36 | int LineNoFilePtr[MAX_FUNCS];
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37 | int EndAddress[MAX_FUNCS];
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38 | int LastLineNo[MAX_FUNCS];
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39 | int FuncEntries[MAX_FUNCS];
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40 |
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41 | int OutputTheSection(Section * sect);
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42 | short int GetCoffFlags(const char *s);
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43 | void SortSymbolTable(void);
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44 | Section *FindSection(TCCState * s1, const char *sname);
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45 |
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46 | int C67_main_entry_point;
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47 |
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48 | int FindCoffSymbolIndex(const char *func_name);
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49 | int nb_syms;
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50 |
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51 | typedef struct {
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52 | long tag;
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53 | long size;
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54 | long fileptr;
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55 | long nextsym;
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56 | short int dummy;
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57 | } AUXFUNC;
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58 |
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59 | typedef struct {
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60 | long regmask;
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61 | unsigned short lineno;
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62 | unsigned short nentries;
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63 | int localframe;
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64 | int nextentry;
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65 | short int dummy;
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66 | } AUXBF;
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67 |
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68 | typedef struct {
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69 | long dummy;
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70 | unsigned short lineno;
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71 | unsigned short dummy1;
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72 | int dummy2;
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73 | int dummy3;
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74 | unsigned short dummy4;
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75 | } AUXEF;
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76 |
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77 | ST_FUNC int tcc_output_coff(TCCState *s1, FILE *f)
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78 | {
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79 | Section *tcc_sect;
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80 | SCNHDR *coff_sec;
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81 | int file_pointer;
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82 | char *Coff_str_table, *pCoff_str_table;
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83 | int CoffTextSectionNo, coff_nb_syms;
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84 | FILHDR file_hdr; /* FILE HEADER STRUCTURE */
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85 | Section *stext, *sdata, *sbss;
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86 | int i, NSectionsToOutput = 0;
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87 |
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88 | Coff_str_table = pCoff_str_table = NULL;
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89 |
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90 | stext = FindSection(s1, ".text");
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91 | sdata = FindSection(s1, ".data");
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92 | sbss = FindSection(s1, ".bss");
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93 |
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94 | nb_syms = symtab_section->data_offset / sizeof(Elf32_Sym);
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95 | coff_nb_syms = FindCoffSymbolIndex("XXXXXXXXXX1");
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96 |
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97 | file_hdr.f_magic = COFF_C67_MAGIC; /* magic number */
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98 | file_hdr.f_timdat = 0; /* time & date stamp */
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99 | file_hdr.f_opthdr = sizeof(AOUTHDR); /* sizeof(optional hdr) */
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100 | file_hdr.f_flags = 0x1143; /* flags (copied from what code composer does) */
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101 | file_hdr.f_TargetID = 0x99; /* for C6x = 0x0099 */
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102 |
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103 | o_filehdr.magic = 0x0108; /* see magic.h */
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104 | o_filehdr.vstamp = 0x0190; /* version stamp */
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105 | o_filehdr.tsize = stext->data_offset; /* text size in bytes, padded to FW bdry */
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106 | o_filehdr.dsize = sdata->data_offset; /* initialized data " " */
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107 | o_filehdr.bsize = sbss->data_offset; /* uninitialized data " " */
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108 | o_filehdr.entrypt = C67_main_entry_point; /* entry pt. */
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109 | o_filehdr.text_start = stext->sh_addr; /* base of text used for this file */
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110 | o_filehdr.data_start = sdata->sh_addr; /* base of data used for this file */
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111 |
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112 |
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113 | // create all the section headers
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114 |
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115 | file_pointer = FILHSZ + sizeof(AOUTHDR);
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116 |
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117 | CoffTextSectionNo = -1;
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118 |
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119 | for (i = 1; i < s1->nb_sections; i++) {
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120 | coff_sec = §ion_header[i];
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121 | tcc_sect = s1->sections[i];
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122 |
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123 | if (OutputTheSection(tcc_sect)) {
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124 | NSectionsToOutput++;
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125 |
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126 | if (CoffTextSectionNo == -1 && tcc_sect == stext)
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127 | CoffTextSectionNo = NSectionsToOutput; // rem which coff sect number the .text sect is
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128 |
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129 | strcpy(coff_sec->s_name, tcc_sect->name); /* section name */
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130 |
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131 | coff_sec->s_paddr = tcc_sect->sh_addr; /* physical address */
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132 | coff_sec->s_vaddr = tcc_sect->sh_addr; /* virtual address */
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133 | coff_sec->s_size = tcc_sect->data_offset; /* section size */
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134 | coff_sec->s_scnptr = 0; /* file ptr to raw data for section */
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135 | coff_sec->s_relptr = 0; /* file ptr to relocation */
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136 | coff_sec->s_lnnoptr = 0; /* file ptr to line numbers */
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137 | coff_sec->s_nreloc = 0; /* number of relocation entries */
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138 | coff_sec->s_flags = GetCoffFlags(coff_sec->s_name); /* flags */
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139 | coff_sec->s_reserved = 0; /* reserved byte */
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140 | coff_sec->s_page = 0; /* memory page id */
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141 |
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142 | file_pointer += sizeof(SCNHDR);
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143 | }
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144 | }
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145 |
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146 | file_hdr.f_nscns = NSectionsToOutput; /* number of sections */
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147 |
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148 | // now loop through and determine file pointer locations
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149 | // for the raw data
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150 |
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151 |
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152 | for (i = 1; i < s1->nb_sections; i++) {
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153 | coff_sec = §ion_header[i];
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154 | tcc_sect = s1->sections[i];
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155 |
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156 | if (OutputTheSection(tcc_sect)) {
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157 | // put raw data
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158 | coff_sec->s_scnptr = file_pointer; /* file ptr to raw data for section */
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159 | file_pointer += coff_sec->s_size;
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160 | }
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161 | }
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162 |
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163 | // now loop through and determine file pointer locations
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164 | // for the relocation data
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165 |
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166 | for (i = 1; i < s1->nb_sections; i++) {
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167 | coff_sec = §ion_header[i];
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168 | tcc_sect = s1->sections[i];
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169 |
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170 | if (OutputTheSection(tcc_sect)) {
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171 | // put relocations data
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172 | if (coff_sec->s_nreloc > 0) {
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173 | coff_sec->s_relptr = file_pointer; /* file ptr to relocation */
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174 | file_pointer += coff_sec->s_nreloc * sizeof(struct reloc);
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175 | }
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176 | }
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177 | }
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178 |
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179 | // now loop through and determine file pointer locations
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180 | // for the line number data
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181 |
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182 | for (i = 1; i < s1->nb_sections; i++) {
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183 | coff_sec = §ion_header[i];
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184 | tcc_sect = s1->sections[i];
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185 |
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186 | coff_sec->s_nlnno = 0;
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187 | coff_sec->s_lnnoptr = 0;
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188 |
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189 | if (s1->do_debug && tcc_sect == stext) {
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190 | // count how many line nos data
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191 |
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192 | // also find association between source file name and function
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193 | // so we can sort the symbol table
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194 |
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195 |
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196 | Stab_Sym *sym, *sym_end;
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197 | char func_name[MAX_FUNC_NAME_LENGTH],
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198 | last_func_name[MAX_FUNC_NAME_LENGTH];
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199 | unsigned long func_addr, last_pc, pc;
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200 | const char *incl_files[INCLUDE_STACK_SIZE];
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201 | int incl_index, len, last_line_num;
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202 | const char *str, *p;
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203 |
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204 | coff_sec->s_lnnoptr = file_pointer; /* file ptr to linno */
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205 |
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206 |
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207 | func_name[0] = '\0';
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208 | func_addr = 0;
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209 | incl_index = 0;
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210 | last_func_name[0] = '\0';
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211 | last_pc = 0xffffffff;
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212 | last_line_num = 1;
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213 | sym = (Stab_Sym *) stab_section->data + 1;
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214 | sym_end =
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215 | (Stab_Sym *) (stab_section->data +
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216 | stab_section->data_offset);
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217 |
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218 | nFuncs = 0;
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219 | while (sym < sym_end) {
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220 | switch (sym->n_type) {
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221 | /* function start or end */
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222 | case N_FUN:
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223 | if (sym->n_strx == 0) {
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224 | // end of function
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225 |
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226 | coff_sec->s_nlnno++;
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227 | file_pointer += LINESZ;
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228 |
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229 | pc = sym->n_value + func_addr;
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230 | func_name[0] = '\0';
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231 | func_addr = 0;
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232 | EndAddress[nFuncs] = pc;
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233 | FuncEntries[nFuncs] =
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234 | (file_pointer -
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235 | LineNoFilePtr[nFuncs]) / LINESZ - 1;
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236 | LastLineNo[nFuncs++] = last_line_num + 1;
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237 | } else {
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238 | // beginning of function
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239 |
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240 | LineNoFilePtr[nFuncs] = file_pointer;
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241 | coff_sec->s_nlnno++;
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242 | file_pointer += LINESZ;
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243 |
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244 | str =
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245 | (const char *) stabstr_section->data +
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246 | sym->n_strx;
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247 |
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248 | p = strchr(str, ':');
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249 | if (!p) {
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250 | pstrcpy(func_name, sizeof(func_name), str);
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251 | pstrcpy(Func[nFuncs], sizeof(func_name), str);
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252 | } else {
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253 | len = p - str;
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254 | if (len > sizeof(func_name) - 1)
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255 | len = sizeof(func_name) - 1;
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256 | memcpy(func_name, str, len);
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257 | memcpy(Func[nFuncs], str, len);
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258 | func_name[len] = '\0';
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259 | }
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260 |
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261 | // save the file that it came in so we can sort later
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262 | pstrcpy(AssociatedFile[nFuncs], sizeof(func_name),
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263 | incl_files[incl_index - 1]);
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264 |
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265 | func_addr = sym->n_value;
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266 | }
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267 | break;
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268 |
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269 | /* line number info */
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270 | case N_SLINE:
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271 | pc = sym->n_value + func_addr;
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272 |
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273 | last_pc = pc;
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274 | last_line_num = sym->n_desc;
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275 |
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276 | /* XXX: slow! */
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277 | strcpy(last_func_name, func_name);
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278 |
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279 | coff_sec->s_nlnno++;
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280 | file_pointer += LINESZ;
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281 | break;
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282 | /* include files */
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283 | case N_BINCL:
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284 | str =
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285 | (const char *) stabstr_section->data + sym->n_strx;
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286 | add_incl:
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287 | if (incl_index < INCLUDE_STACK_SIZE) {
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288 | incl_files[incl_index++] = str;
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289 | }
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290 | break;
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291 | case N_EINCL:
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292 | if (incl_index > 1)
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293 | incl_index--;
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294 | break;
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295 | case N_SO:
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296 | if (sym->n_strx == 0) {
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297 | incl_index = 0; /* end of translation unit */
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298 | } else {
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299 | str =
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300 | (const char *) stabstr_section->data +
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301 | sym->n_strx;
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302 | /* do not add path */
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303 | len = strlen(str);
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304 | if (len > 0 && str[len - 1] != '/')
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305 | goto add_incl;
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306 | }
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307 | break;
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308 | }
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309 | sym++;
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310 | }
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311 | }
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312 |
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313 | }
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314 |
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315 | file_hdr.f_symptr = file_pointer; /* file pointer to symtab */
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316 |
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317 | if (s1->do_debug)
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318 | file_hdr.f_nsyms = coff_nb_syms; /* number of symtab entries */
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319 | else
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320 | file_hdr.f_nsyms = 0;
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321 |
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322 | file_pointer += file_hdr.f_nsyms * SYMNMLEN;
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323 |
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324 | // OK now we are all set to write the file
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325 |
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326 |
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327 | fwrite(&file_hdr, FILHSZ, 1, f);
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328 | fwrite(&o_filehdr, sizeof(o_filehdr), 1, f);
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329 |
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330 | // write section headers
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331 | for (i = 1; i < s1->nb_sections; i++) {
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332 | coff_sec = §ion_header[i];
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333 | tcc_sect = s1->sections[i];
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334 |
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335 | if (OutputTheSection(tcc_sect)) {
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336 | fwrite(coff_sec, sizeof(SCNHDR), 1, f);
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337 | }
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338 | }
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339 |
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340 | // write raw data
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341 | for (i = 1; i < s1->nb_sections; i++) {
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342 | coff_sec = §ion_header[i];
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343 | tcc_sect = s1->sections[i];
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344 |
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345 | if (OutputTheSection(tcc_sect)) {
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346 | fwrite(tcc_sect->data, tcc_sect->data_offset, 1, f);
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347 | }
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348 | }
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349 |
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350 | // write relocation data
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351 | for (i = 1; i < s1->nb_sections; i++) {
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352 | coff_sec = §ion_header[i];
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353 | tcc_sect = s1->sections[i];
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354 |
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355 | if (OutputTheSection(tcc_sect)) {
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356 | // put relocations data
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357 | if (coff_sec->s_nreloc > 0) {
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358 | fwrite(tcc_sect->reloc,
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359 | coff_sec->s_nreloc * sizeof(struct reloc), 1, f);
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360 | }
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361 | }
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362 | }
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363 |
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364 |
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365 | // group the symbols in order of filename, func1, func2, etc
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366 | // finally global symbols
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367 |
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368 | if (s1->do_debug)
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369 | SortSymbolTable();
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370 |
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371 | // write line no data
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372 |
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373 | for (i = 1; i < s1->nb_sections; i++) {
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374 | coff_sec = §ion_header[i];
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375 | tcc_sect = s1->sections[i];
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376 |
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377 | if (s1->do_debug && tcc_sect == stext) {
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378 | // count how many line nos data
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379 |
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380 |
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381 | Stab_Sym *sym, *sym_end;
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382 | char func_name[128], last_func_name[128];
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383 | unsigned long func_addr, last_pc, pc;
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384 | const char *incl_files[INCLUDE_STACK_SIZE];
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385 | int incl_index, len, last_line_num;
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386 | const char *str, *p;
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387 |
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388 | LINENO CoffLineNo;
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389 |
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390 | func_name[0] = '\0';
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391 | func_addr = 0;
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392 | incl_index = 0;
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393 | last_func_name[0] = '\0';
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394 | last_pc = 0;
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395 | last_line_num = 1;
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396 | sym = (Stab_Sym *) stab_section->data + 1;
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397 | sym_end =
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398 | (Stab_Sym *) (stab_section->data +
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399 | stab_section->data_offset);
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400 |
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401 | while (sym < sym_end) {
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402 | switch (sym->n_type) {
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403 | /* function start or end */
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404 | case N_FUN:
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405 | if (sym->n_strx == 0) {
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406 | // end of function
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407 |
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408 | CoffLineNo.l_addr.l_paddr = last_pc;
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409 | CoffLineNo.l_lnno = last_line_num + 1;
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410 | fwrite(&CoffLineNo, 6, 1, f);
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411 |
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412 | pc = sym->n_value + func_addr;
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413 | func_name[0] = '\0';
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414 | func_addr = 0;
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415 | } else {
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416 | // beginning of function
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417 |
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418 | str =
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419 | (const char *) stabstr_section->data +
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420 | sym->n_strx;
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421 |
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422 |
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423 | p = strchr(str, ':');
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424 | if (!p) {
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425 | pstrcpy(func_name, sizeof(func_name), str);
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426 | } else {
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427 | len = p - str;
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428 | if (len > sizeof(func_name) - 1)
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429 | len = sizeof(func_name) - 1;
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430 | memcpy(func_name, str, len);
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431 | func_name[len] = '\0';
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432 | }
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433 | func_addr = sym->n_value;
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434 | last_pc = func_addr;
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435 | last_line_num = -1;
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436 |
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437 | // output a function begin
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438 |
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439 | CoffLineNo.l_addr.l_symndx =
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440 | FindCoffSymbolIndex(func_name);
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441 | CoffLineNo.l_lnno = 0;
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442 |
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443 | fwrite(&CoffLineNo, 6, 1, f);
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444 | }
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445 | break;
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446 |
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447 | /* line number info */
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448 | case N_SLINE:
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449 | pc = sym->n_value + func_addr;
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450 |
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451 |
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452 | /* XXX: slow! */
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453 | strcpy(last_func_name, func_name);
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454 |
|
---|
455 | // output a line reference
|
---|
456 |
|
---|
457 | CoffLineNo.l_addr.l_paddr = last_pc;
|
---|
458 |
|
---|
459 | if (last_line_num == -1) {
|
---|
460 | CoffLineNo.l_lnno = sym->n_desc;
|
---|
461 | } else {
|
---|
462 | CoffLineNo.l_lnno = last_line_num + 1;
|
---|
463 | }
|
---|
464 |
|
---|
465 | fwrite(&CoffLineNo, 6, 1, f);
|
---|
466 |
|
---|
467 | last_pc = pc;
|
---|
468 | last_line_num = sym->n_desc;
|
---|
469 |
|
---|
470 | break;
|
---|
471 |
|
---|
472 | /* include files */
|
---|
473 | case N_BINCL:
|
---|
474 | str =
|
---|
475 | (const char *) stabstr_section->data + sym->n_strx;
|
---|
476 | add_incl2:
|
---|
477 | if (incl_index < INCLUDE_STACK_SIZE) {
|
---|
478 | incl_files[incl_index++] = str;
|
---|
479 | }
|
---|
480 | break;
|
---|
481 | case N_EINCL:
|
---|
482 | if (incl_index > 1)
|
---|
483 | incl_index--;
|
---|
484 | break;
|
---|
485 | case N_SO:
|
---|
486 | if (sym->n_strx == 0) {
|
---|
487 | incl_index = 0; /* end of translation unit */
|
---|
488 | } else {
|
---|
489 | str =
|
---|
490 | (const char *) stabstr_section->data +
|
---|
491 | sym->n_strx;
|
---|
492 | /* do not add path */
|
---|
493 | len = strlen(str);
|
---|
494 | if (len > 0 && str[len - 1] != '/')
|
---|
495 | goto add_incl2;
|
---|
496 | }
|
---|
497 | break;
|
---|
498 | }
|
---|
499 | sym++;
|
---|
500 | }
|
---|
501 | }
|
---|
502 | }
|
---|
503 |
|
---|
504 | // write symbol table
|
---|
505 | if (s1->do_debug) {
|
---|
506 | int k;
|
---|
507 | struct syment csym;
|
---|
508 | AUXFUNC auxfunc;
|
---|
509 | AUXBF auxbf;
|
---|
510 | AUXEF auxef;
|
---|
511 | int i;
|
---|
512 | Elf32_Sym *p;
|
---|
513 | const char *name;
|
---|
514 | int nstr;
|
---|
515 | int n = 0;
|
---|
516 |
|
---|
517 | Coff_str_table = (char *) tcc_malloc(MAX_STR_TABLE);
|
---|
518 | pCoff_str_table = Coff_str_table;
|
---|
519 | nstr = 0;
|
---|
520 |
|
---|
521 | p = (Elf32_Sym *) symtab_section->data;
|
---|
522 |
|
---|
523 |
|
---|
524 | for (i = 0; i < nb_syms; i++) {
|
---|
525 |
|
---|
526 | name = symtab_section->link->data + p->st_name;
|
---|
527 |
|
---|
528 | for (k = 0; k < 8; k++)
|
---|
529 | csym._n._n_name[k] = 0;
|
---|
530 |
|
---|
531 | if (strlen(name) <= 8) {
|
---|
532 | strcpy(csym._n._n_name, name);
|
---|
533 | } else {
|
---|
534 | if (pCoff_str_table - Coff_str_table + strlen(name) >
|
---|
535 | MAX_STR_TABLE - 1)
|
---|
536 | tcc_error("String table too large");
|
---|
537 |
|
---|
538 | csym._n._n_n._n_zeroes = 0;
|
---|
539 | csym._n._n_n._n_offset =
|
---|
540 | pCoff_str_table - Coff_str_table + 4;
|
---|
541 |
|
---|
542 | strcpy(pCoff_str_table, name);
|
---|
543 | pCoff_str_table += strlen(name) + 1; // skip over null
|
---|
544 | nstr++;
|
---|
545 | }
|
---|
546 |
|
---|
547 | if (p->st_info == 4) {
|
---|
548 | // put a filename symbol
|
---|
549 | csym.n_value = 33; // ?????
|
---|
550 | csym.n_scnum = N_DEBUG;
|
---|
551 | csym.n_type = 0;
|
---|
552 | csym.n_sclass = C_FILE;
|
---|
553 | csym.n_numaux = 0;
|
---|
554 | fwrite(&csym, 18, 1, f);
|
---|
555 | n++;
|
---|
556 |
|
---|
557 | } else if (p->st_info == 0x12) {
|
---|
558 | // find the function data
|
---|
559 |
|
---|
560 | for (k = 0; k < nFuncs; k++) {
|
---|
561 | if (strcmp(name, Func[k]) == 0)
|
---|
562 | break;
|
---|
563 | }
|
---|
564 |
|
---|
565 | if (k >= nFuncs) {
|
---|
566 | tcc_error("debug info can't find function: %s", name);
|
---|
567 | }
|
---|
568 | // put a Function Name
|
---|
569 |
|
---|
570 | csym.n_value = p->st_value; // physical address
|
---|
571 | csym.n_scnum = CoffTextSectionNo;
|
---|
572 | csym.n_type = MKTYPE(T_INT, DT_FCN, 0, 0, 0, 0, 0);
|
---|
573 | csym.n_sclass = C_EXT;
|
---|
574 | csym.n_numaux = 1;
|
---|
575 | fwrite(&csym, 18, 1, f);
|
---|
576 |
|
---|
577 | // now put aux info
|
---|
578 |
|
---|
579 | auxfunc.tag = 0;
|
---|
580 | auxfunc.size = EndAddress[k] - p->st_value;
|
---|
581 | auxfunc.fileptr = LineNoFilePtr[k];
|
---|
582 | auxfunc.nextsym = n + 6; // tktk
|
---|
583 | auxfunc.dummy = 0;
|
---|
584 | fwrite(&auxfunc, 18, 1, f);
|
---|
585 |
|
---|
586 | // put a .bf
|
---|
587 |
|
---|
588 | strcpy(csym._n._n_name, ".bf");
|
---|
589 | csym.n_value = p->st_value; // physical address
|
---|
590 | csym.n_scnum = CoffTextSectionNo;
|
---|
591 | csym.n_type = 0;
|
---|
592 | csym.n_sclass = C_FCN;
|
---|
593 | csym.n_numaux = 1;
|
---|
594 | fwrite(&csym, 18, 1, f);
|
---|
595 |
|
---|
596 | // now put aux info
|
---|
597 |
|
---|
598 | auxbf.regmask = 0;
|
---|
599 | auxbf.lineno = 0;
|
---|
600 | auxbf.nentries = FuncEntries[k];
|
---|
601 | auxbf.localframe = 0;
|
---|
602 | auxbf.nextentry = n + 6;
|
---|
603 | auxbf.dummy = 0;
|
---|
604 | fwrite(&auxbf, 18, 1, f);
|
---|
605 |
|
---|
606 | // put a .ef
|
---|
607 |
|
---|
608 | strcpy(csym._n._n_name, ".ef");
|
---|
609 | csym.n_value = EndAddress[k]; // physical address
|
---|
610 | csym.n_scnum = CoffTextSectionNo;
|
---|
611 | csym.n_type = 0;
|
---|
612 | csym.n_sclass = C_FCN;
|
---|
613 | csym.n_numaux = 1;
|
---|
614 | fwrite(&csym, 18, 1, f);
|
---|
615 |
|
---|
616 | // now put aux info
|
---|
617 |
|
---|
618 | auxef.dummy = 0;
|
---|
619 | auxef.lineno = LastLineNo[k];
|
---|
620 | auxef.dummy1 = 0;
|
---|
621 | auxef.dummy2 = 0;
|
---|
622 | auxef.dummy3 = 0;
|
---|
623 | auxef.dummy4 = 0;
|
---|
624 | fwrite(&auxef, 18, 1, f);
|
---|
625 |
|
---|
626 | n += 6;
|
---|
627 |
|
---|
628 | } else {
|
---|
629 | // try an put some type info
|
---|
630 |
|
---|
631 | if ((p->st_other & VT_BTYPE) == VT_DOUBLE) {
|
---|
632 | csym.n_type = T_DOUBLE; // int
|
---|
633 | csym.n_sclass = C_EXT;
|
---|
634 | } else if ((p->st_other & VT_BTYPE) == VT_FLOAT) {
|
---|
635 | csym.n_type = T_FLOAT;
|
---|
636 | csym.n_sclass = C_EXT;
|
---|
637 | } else if ((p->st_other & VT_BTYPE) == VT_INT) {
|
---|
638 | csym.n_type = T_INT; // int
|
---|
639 | csym.n_sclass = C_EXT;
|
---|
640 | } else if ((p->st_other & VT_BTYPE) == VT_SHORT) {
|
---|
641 | csym.n_type = T_SHORT;
|
---|
642 | csym.n_sclass = C_EXT;
|
---|
643 | } else if ((p->st_other & VT_BTYPE) == VT_BYTE) {
|
---|
644 | csym.n_type = T_CHAR;
|
---|
645 | csym.n_sclass = C_EXT;
|
---|
646 | } else {
|
---|
647 | csym.n_type = T_INT; // just mark as a label
|
---|
648 | csym.n_sclass = C_LABEL;
|
---|
649 | }
|
---|
650 |
|
---|
651 |
|
---|
652 | csym.n_value = p->st_value;
|
---|
653 | csym.n_scnum = 2;
|
---|
654 | csym.n_numaux = 1;
|
---|
655 | fwrite(&csym, 18, 1, f);
|
---|
656 |
|
---|
657 | auxfunc.tag = 0;
|
---|
658 | auxfunc.size = 0x20;
|
---|
659 | auxfunc.fileptr = 0;
|
---|
660 | auxfunc.nextsym = 0;
|
---|
661 | auxfunc.dummy = 0;
|
---|
662 | fwrite(&auxfunc, 18, 1, f);
|
---|
663 | n++;
|
---|
664 | n++;
|
---|
665 |
|
---|
666 | }
|
---|
667 |
|
---|
668 | p++;
|
---|
669 | }
|
---|
670 | }
|
---|
671 |
|
---|
672 | if (s1->do_debug) {
|
---|
673 | // write string table
|
---|
674 |
|
---|
675 | // first write the size
|
---|
676 | i = pCoff_str_table - Coff_str_table;
|
---|
677 | fwrite(&i, 4, 1, f);
|
---|
678 |
|
---|
679 | // then write the strings
|
---|
680 | fwrite(Coff_str_table, i, 1, f);
|
---|
681 |
|
---|
682 | tcc_free(Coff_str_table);
|
---|
683 | }
|
---|
684 |
|
---|
685 | return 0;
|
---|
686 | }
|
---|
687 |
|
---|
688 |
|
---|
689 |
|
---|
690 | // group the symbols in order of filename, func1, func2, etc
|
---|
691 | // finally global symbols
|
---|
692 |
|
---|
693 | void SortSymbolTable(void)
|
---|
694 | {
|
---|
695 | int i, j, k, n = 0;
|
---|
696 | Elf32_Sym *p, *p2, *NewTable;
|
---|
697 | char *name, *name2;
|
---|
698 |
|
---|
699 | NewTable = (Elf32_Sym *) tcc_malloc(nb_syms * sizeof(Elf32_Sym));
|
---|
700 |
|
---|
701 | p = (Elf32_Sym *) symtab_section->data;
|
---|
702 |
|
---|
703 |
|
---|
704 | // find a file symbol, copy it over
|
---|
705 | // then scan the whole symbol list and copy any function
|
---|
706 | // symbols that match the file association
|
---|
707 |
|
---|
708 | for (i = 0; i < nb_syms; i++) {
|
---|
709 | if (p->st_info == 4) {
|
---|
710 | name = (char *) symtab_section->link->data + p->st_name;
|
---|
711 |
|
---|
712 | // this is a file symbol, copy it over
|
---|
713 |
|
---|
714 | NewTable[n++] = *p;
|
---|
715 |
|
---|
716 | p2 = (Elf32_Sym *) symtab_section->data;
|
---|
717 |
|
---|
718 | for (j = 0; j < nb_syms; j++) {
|
---|
719 | if (p2->st_info == 0x12) {
|
---|
720 | // this is a func symbol
|
---|
721 |
|
---|
722 | name2 =
|
---|
723 | (char *) symtab_section->link->data + p2->st_name;
|
---|
724 |
|
---|
725 | // find the function data index
|
---|
726 |
|
---|
727 | for (k = 0; k < nFuncs; k++) {
|
---|
728 | if (strcmp(name2, Func[k]) == 0)
|
---|
729 | break;
|
---|
730 | }
|
---|
731 |
|
---|
732 | if (k >= nFuncs) {
|
---|
733 | tcc_error("debug (sort) info can't find function: %s", name2);
|
---|
734 | }
|
---|
735 |
|
---|
736 | if (strcmp(AssociatedFile[k], name) == 0) {
|
---|
737 | // yes they match copy it over
|
---|
738 |
|
---|
739 | NewTable[n++] = *p2;
|
---|
740 | }
|
---|
741 | }
|
---|
742 | p2++;
|
---|
743 | }
|
---|
744 | }
|
---|
745 | p++;
|
---|
746 | }
|
---|
747 |
|
---|
748 | // now all the filename and func symbols should have been copied over
|
---|
749 | // copy all the rest over (all except file and funcs)
|
---|
750 |
|
---|
751 | p = (Elf32_Sym *) symtab_section->data;
|
---|
752 | for (i = 0; i < nb_syms; i++) {
|
---|
753 | if (p->st_info != 4 && p->st_info != 0x12) {
|
---|
754 | NewTable[n++] = *p;
|
---|
755 | }
|
---|
756 | p++;
|
---|
757 | }
|
---|
758 |
|
---|
759 | if (n != nb_syms)
|
---|
760 | tcc_error("Internal Compiler error, debug info");
|
---|
761 |
|
---|
762 | // copy it all back
|
---|
763 |
|
---|
764 | p = (Elf32_Sym *) symtab_section->data;
|
---|
765 | for (i = 0; i < nb_syms; i++) {
|
---|
766 | *p++ = NewTable[i];
|
---|
767 | }
|
---|
768 |
|
---|
769 | tcc_free(NewTable);
|
---|
770 | }
|
---|
771 |
|
---|
772 |
|
---|
773 | int FindCoffSymbolIndex(const char *func_name)
|
---|
774 | {
|
---|
775 | int i, n = 0;
|
---|
776 | Elf32_Sym *p;
|
---|
777 | char *name;
|
---|
778 |
|
---|
779 | p = (Elf32_Sym *) symtab_section->data;
|
---|
780 |
|
---|
781 | for (i = 0; i < nb_syms; i++) {
|
---|
782 |
|
---|
783 | name = (char *) symtab_section->link->data + p->st_name;
|
---|
784 |
|
---|
785 | if (p->st_info == 4) {
|
---|
786 | // put a filename symbol
|
---|
787 | n++;
|
---|
788 | } else if (p->st_info == 0x12) {
|
---|
789 |
|
---|
790 | if (strcmp(func_name, name) == 0)
|
---|
791 | return n;
|
---|
792 |
|
---|
793 | n += 6;
|
---|
794 |
|
---|
795 | // put a Function Name
|
---|
796 |
|
---|
797 | // now put aux info
|
---|
798 |
|
---|
799 | // put a .bf
|
---|
800 |
|
---|
801 | // now put aux info
|
---|
802 |
|
---|
803 | // put a .ef
|
---|
804 |
|
---|
805 | // now put aux info
|
---|
806 |
|
---|
807 | } else {
|
---|
808 | n += 2;
|
---|
809 | }
|
---|
810 |
|
---|
811 | p++;
|
---|
812 | }
|
---|
813 |
|
---|
814 | return n; // total number of symbols
|
---|
815 | }
|
---|
816 |
|
---|
817 | int OutputTheSection(Section * sect)
|
---|
818 | {
|
---|
819 | const char *s = sect->name;
|
---|
820 |
|
---|
821 | if (!strcmp(s, ".text"))
|
---|
822 | return 1;
|
---|
823 | else if (!strcmp(s, ".data"))
|
---|
824 | return 1;
|
---|
825 | else
|
---|
826 | return 0;
|
---|
827 | }
|
---|
828 |
|
---|
829 | short int GetCoffFlags(const char *s)
|
---|
830 | {
|
---|
831 | if (!strcmp(s, ".text"))
|
---|
832 | return STYP_TEXT | STYP_DATA | STYP_ALIGN | 0x400;
|
---|
833 | else if (!strcmp(s, ".data"))
|
---|
834 | return STYP_DATA;
|
---|
835 | else if (!strcmp(s, ".bss"))
|
---|
836 | return STYP_BSS;
|
---|
837 | else if (!strcmp(s, ".stack"))
|
---|
838 | return STYP_BSS | STYP_ALIGN | 0x200;
|
---|
839 | else if (!strcmp(s, ".cinit"))
|
---|
840 | return STYP_COPY | STYP_DATA | STYP_ALIGN | 0x200;
|
---|
841 | else
|
---|
842 | return 0;
|
---|
843 | }
|
---|
844 |
|
---|
845 | Section *FindSection(TCCState * s1, const char *sname)
|
---|
846 | {
|
---|
847 | Section *s;
|
---|
848 | int i;
|
---|
849 |
|
---|
850 | for (i = 1; i < s1->nb_sections; i++) {
|
---|
851 | s = s1->sections[i];
|
---|
852 |
|
---|
853 | if (!strcmp(sname, s->name))
|
---|
854 | return s;
|
---|
855 | }
|
---|
856 |
|
---|
857 | tcc_error("could not find section %s", sname);
|
---|
858 | return 0;
|
---|
859 | }
|
---|
860 |
|
---|
861 | ST_FUNC int tcc_load_coff(TCCState * s1, int fd)
|
---|
862 | {
|
---|
863 | // tktk TokenSym *ts;
|
---|
864 |
|
---|
865 | FILE *f;
|
---|
866 | unsigned int str_size;
|
---|
867 | char *Coff_str_table, *name;
|
---|
868 | int i, k;
|
---|
869 | struct syment csym;
|
---|
870 | char name2[9];
|
---|
871 | FILHDR file_hdr; /* FILE HEADER STRUCTURE */
|
---|
872 |
|
---|
873 | f = fdopen(fd, "rb");
|
---|
874 | if (!f) {
|
---|
875 | tcc_error("Unable to open .out file for input");
|
---|
876 | }
|
---|
877 |
|
---|
878 | if (fread(&file_hdr, FILHSZ, 1, f) != 1)
|
---|
879 | tcc_error("error reading .out file for input");
|
---|
880 |
|
---|
881 | if (fread(&o_filehdr, sizeof(o_filehdr), 1, f) != 1)
|
---|
882 | tcc_error("error reading .out file for input");
|
---|
883 |
|
---|
884 | // first read the string table
|
---|
885 |
|
---|
886 | if (fseek(f, file_hdr.f_symptr + file_hdr.f_nsyms * SYMESZ, SEEK_SET))
|
---|
887 | tcc_error("error reading .out file for input");
|
---|
888 |
|
---|
889 | if (fread(&str_size, sizeof(int), 1, f) != 1)
|
---|
890 | tcc_error("error reading .out file for input");
|
---|
891 |
|
---|
892 |
|
---|
893 | Coff_str_table = (char *) tcc_malloc(str_size);
|
---|
894 |
|
---|
895 | if (fread(Coff_str_table, str_size - 4, 1, f) != 1)
|
---|
896 | tcc_error("error reading .out file for input");
|
---|
897 |
|
---|
898 | // read/process all the symbols
|
---|
899 |
|
---|
900 | // seek back to symbols
|
---|
901 |
|
---|
902 | if (fseek(f, file_hdr.f_symptr, SEEK_SET))
|
---|
903 | tcc_error("error reading .out file for input");
|
---|
904 |
|
---|
905 | for (i = 0; i < file_hdr.f_nsyms; i++) {
|
---|
906 | if (fread(&csym, SYMESZ, 1, f) != 1)
|
---|
907 | tcc_error("error reading .out file for input");
|
---|
908 |
|
---|
909 | if (csym._n._n_n._n_zeroes == 0) {
|
---|
910 | name = Coff_str_table + csym._n._n_n._n_offset - 4;
|
---|
911 | } else {
|
---|
912 | name = csym._n._n_name;
|
---|
913 |
|
---|
914 | if (name[7] != 0) {
|
---|
915 | for (k = 0; k < 8; k++)
|
---|
916 | name2[k] = name[k];
|
---|
917 |
|
---|
918 | name2[8] = 0;
|
---|
919 |
|
---|
920 | name = name2;
|
---|
921 | }
|
---|
922 | }
|
---|
923 | // if (strcmp("_DAC_Buffer",name)==0) // tktk
|
---|
924 | // name[0]=0;
|
---|
925 |
|
---|
926 | if (((csym.n_type & 0x30) == 0x20 && csym.n_sclass == 0x2) || ((csym.n_type & 0x30) == 0x30 && csym.n_sclass == 0x2) || (csym.n_type == 0x4 && csym.n_sclass == 0x2) || (csym.n_type == 0x8 && csym.n_sclass == 0x2) || // structures
|
---|
927 | (csym.n_type == 0x18 && csym.n_sclass == 0x2) || // pointer to structure
|
---|
928 | (csym.n_type == 0x7 && csym.n_sclass == 0x2) || // doubles
|
---|
929 | (csym.n_type == 0x6 && csym.n_sclass == 0x2)) // floats
|
---|
930 | {
|
---|
931 | // strip off any leading underscore (except for other main routine)
|
---|
932 |
|
---|
933 | if (name[0] == '_' && strcmp(name, "_main") != 0)
|
---|
934 | name++;
|
---|
935 |
|
---|
936 | tcc_add_symbol(s1, name, (void*)(uintptr_t)csym.n_value);
|
---|
937 | }
|
---|
938 | // skip any aux records
|
---|
939 |
|
---|
940 | if (csym.n_numaux == 1) {
|
---|
941 | if (fread(&csym, SYMESZ, 1, f) != 1)
|
---|
942 | tcc_error("error reading .out file for input");
|
---|
943 | i++;
|
---|
944 | }
|
---|
945 | }
|
---|
946 |
|
---|
947 | return 0;
|
---|
948 | }
|
---|