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Rev | Author | Line No. | Line |
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145 | halyavin | 1 | /* |
2 | * TCCMEOS.C - KolibriOS/MenuetOS file output for the TinyC Compiler |
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6441 | siemargl | 3 | * |
145 | halyavin | 4 | * Copyright (c) 2006 Andrey Khalyavin |
9284 | Coldy | 5 | * Copyright (c) 2021 Coldy (KX extension) |
145 | halyavin | 6 | * |
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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609 | andrew_pro | 20 | */ |
21 | |||
9617 | turbocat | 22 | #include "tcc.h" |
23 | |||
609 | andrew_pro | 24 | typedef struct { |
25 | char magic[8]; |
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26 | int version; |
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27 | int entry_point; |
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28 | int image_size; |
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29 | int memory_size; |
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30 | int stack; |
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31 | int params; |
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32 | int argv; |
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33 | } IMAGE_MEOS_FILE_HEADER,*PIMAGE_MEOS_FILE_HEADER; |
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34 | typedef struct _meos_section_info{ |
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35 | int sh_addr; |
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36 | void* data; |
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37 | int data_size; |
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38 | int sec_num; |
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39 | struct _meos_section_info* next; |
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40 | } meos_section_info; |
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9284 | Coldy | 41 | #ifdef TCC_TARGET_KX |
609 | andrew_pro | 42 | typedef struct { |
9284 | Coldy | 43 | void* data; |
44 | int data_size; |
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45 | } kx_import_table; |
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46 | #endif |
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47 | typedef struct { |
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609 | andrew_pro | 48 | TCCState* s1; |
49 | IMAGE_MEOS_FILE_HEADER header; |
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50 | meos_section_info* code_sections; |
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51 | meos_section_info* data_sections; |
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9284 | Coldy | 52 | #ifdef TCC_TARGET_KX |
53 | kx_import_table* imp_table; |
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54 | #endif |
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609 | andrew_pro | 55 | meos_section_info* bss_sections; |
56 | } me_info; |
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57 | |||
9284 | Coldy | 58 | #ifdef TCC_TARGET_KX |
59 | void kx_init(me_info* me); |
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60 | void kx_build_imports(me_info* me); |
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61 | long kx_get_header_length(me_info* me); |
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62 | void kx_write_header(me_info* me, FILE* f); |
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63 | void kx_write_imports(me_info* me, FILE* f); |
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64 | void kx_free(me_info* me); |
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65 | #endif |
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66 | |||
6441 | siemargl | 67 | int tcc_output_dbgme(const char *filename, me_info* me); |
68 | |||
69 | |||
609 | andrew_pro | 70 | meos_section_info* findsection(me_info* me,int num) |
71 | { |
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72 | meos_section_info* si; |
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73 | for(si=me->code_sections;si;si=si->next) |
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74 | { |
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75 | if (si->sec_num==num) |
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76 | return si; |
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77 | } |
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78 | for (si=me->data_sections;si;si=si->next) |
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79 | { |
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80 | if (si->sec_num==num) |
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81 | return si; |
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82 | } |
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83 | for (si=me->bss_sections;si;si=si->next) |
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84 | { |
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85 | if (si->sec_num==num) |
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86 | return si; |
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87 | } |
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88 | return (meos_section_info*)0; |
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89 | } |
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90 | |||
91 | void build_reloc(me_info* me) |
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92 | { |
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93 | int flag; |
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6441 | siemargl | 94 | Elf32_Rel *rel = 0, *rel_ = 0, *rel_end = 0; |
609 | andrew_pro | 95 | Section *sr; |
96 | meos_section_info* s; |
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97 | meos_section_info* ss; |
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98 | s=me->code_sections; |
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99 | rel=0; |
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100 | rel_end=0; |
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101 | flag=0; |
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102 | for(;;) |
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103 | { |
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104 | sr=me->s1->sections[s->sec_num]->reloc; |
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105 | if (sr) |
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106 | { |
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145 | halyavin | 107 | rel = (Elf32_Rel *) sr->data; |
609 | andrew_pro | 108 | rel_end = (Elf32_Rel *) (sr->data + sr->data_offset); |
109 | } |
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110 | rel_=rel; |
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111 | while (rel_ |
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112 | rel=rel_; |
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113 | int type = ELF32_R_TYPE(rel->r_info); |
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114 | rel_=rel+1; |
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145 | halyavin | 115 | if (type != R_386_PC32 && type != R_386_32) |
609 | andrew_pro | 116 | continue; |
117 | int sym = ELF32_R_SYM(rel->r_info); |
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118 | if (sym>symtab_section->data_offset/sizeof(Elf32_Sym)) |
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119 | continue; |
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120 | Elf32_Sym* esym = ((Elf32_Sym *)symtab_section->data)+sym; |
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121 | int sect=esym->st_shndx; |
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9284 | Coldy | 122 | int sh_addr; |
609 | andrew_pro | 123 | ss=findsection(me,sect); |
6441 | siemargl | 124 | if (ss==0) |
6429 | siemargl | 125 | { |
9284 | Coldy | 126 | const char *sym_name = strtab_section->data + esym->st_name; |
127 | #ifdef TCC_TARGET_KX |
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128 | int sym_index = find_elf_sym(me->s1->dynsymtab_section, sym_name); |
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129 | Elf32_Sym* dyn_sym; |
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130 | if (sym_index == 0) { |
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131 | #endif |
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132 | tcc_error_noabort("undefined symbol '%s'", sym_name); |
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6429 | siemargl | 133 | continue; |
9284 | Coldy | 134 | #ifdef TCC_TARGET_KX |
6429 | siemargl | 135 | } |
9284 | Coldy | 136 | dyn_sym = &((ElfW(Sym) *)me->s1->dynsymtab_section->data)[sym_index]; |
137 | sh_addr = dyn_sym->st_value; |
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138 | if (sh_addr == 0) { |
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139 | tcc_error_noabort("symbol '%s' has zero value", sym_name); |
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140 | continue; |
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141 | } |
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142 | #endif |
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143 | } |
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144 | else |
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145 | sh_addr = ss->sh_addr; |
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609 | andrew_pro | 146 | if (rel->r_offset>s->data_size) |
147 | continue; |
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148 | if (type==R_386_PC32) |
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9284 | Coldy | 149 | *(int*)(rel->r_offset+s->data)+=/*ss->*/sh_addr+esym->st_value-rel->r_offset-s->sh_addr; |
609 | andrew_pro | 150 | else if (type==R_386_32) |
9284 | Coldy | 151 | *(int*)(rel->r_offset+s->data)+=/*ss->*/sh_addr+esym->st_value; |
609 | andrew_pro | 152 | } |
153 | rel=rel_; |
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154 | s=s->next; |
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6441 | siemargl | 155 | if (s==0) // what about multiple BSS sections ? |
609 | andrew_pro | 156 | { |
157 | if (flag) break; |
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158 | s=me->data_sections; |
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159 | if (s==0) break; |
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160 | flag=1; |
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161 | continue; |
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162 | } |
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163 | } |
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164 | } |
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165 | |||
166 | void assign_addresses(me_info* me) |
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167 | { |
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168 | int i; |
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169 | meos_section_info* si; |
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170 | for (i=1;i |
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171 | { |
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172 | Section* s=me->s1->sections[i]; |
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173 | if (strcmp(".text",s->name)==0) |
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174 | { |
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175 | si=tcc_malloc(sizeof(meos_section_info)); |
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176 | si->data=s->data; |
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177 | si->data_size=s->data_offset; |
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178 | si->next=me->code_sections; |
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179 | si->sec_num=i; |
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180 | me->code_sections=si; |
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181 | continue; |
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182 | } |
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183 | if (strcmp(".data",s->name)==0) |
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184 | { |
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185 | si=tcc_malloc(sizeof(meos_section_info)); |
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186 | si->data=s->data; |
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187 | si->data_size=s->data_offset; |
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188 | si->next=me->data_sections; |
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189 | si->sec_num=i; |
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190 | me->data_sections=si; |
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191 | continue; |
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192 | } |
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193 | if (strcmp(".bss",s->name)==0) |
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194 | { |
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195 | si=tcc_malloc(sizeof(meos_section_info)); |
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6441 | siemargl | 196 | si->data=s->data; |
609 | andrew_pro | 197 | si->data_size=s->data_offset; |
198 | si->next=me->bss_sections; |
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199 | si->sec_num=i; |
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200 | me->bss_sections=si; |
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201 | continue; |
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202 | } |
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203 | } |
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204 | int addr; |
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205 | addr=sizeof(IMAGE_MEOS_FILE_HEADER); |
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9284 | Coldy | 206 | #ifdef TCC_TARGET_KX |
207 | addr += kx_get_header_length(me); |
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208 | #endif |
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609 | andrew_pro | 209 | for (si=me->code_sections;si;si=si->next) |
210 | { |
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211 | si->sh_addr=addr; |
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212 | addr+=si->data_size; |
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213 | } |
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214 | for (si=me->data_sections;si;si=si->next) |
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215 | { |
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216 | si->sh_addr=addr; |
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217 | addr+=si->data_size; |
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218 | } |
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219 | me->header.image_size=addr; |
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9284 | Coldy | 220 | #ifdef TCC_TARGET_KX |
221 | kx_build_imports(me); |
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222 | addr = me->header.image_size; |
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223 | #endif |
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609 | andrew_pro | 224 | for (si=me->bss_sections;si;si=si->next) |
225 | { |
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226 | si->sh_addr=addr; |
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227 | addr+=si->data_size; |
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8157 | Boppan | 228 | } |
6441 | siemargl | 229 | if (me->s1->pe_stack_size < 4096) |
8157 | Boppan | 230 | addr+=4096; |
6441 | siemargl | 231 | else |
8157 | Boppan | 232 | addr += me->s1->pe_stack_size; |
609 | andrew_pro | 233 | addr=(addr+4)&(~3); |
234 | me->header.stack=addr; |
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235 | me->header.memory_size=addr; |
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236 | build_reloc(me); |
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237 | } |
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6429 | siemargl | 238 | |
239 | |||
6441 | siemargl | 240 | const char *tcc_get_symbol_name(int st_name) |
6429 | siemargl | 241 | // return string by index from stringtable section |
242 | { |
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243 | const char *sym_name = strtab_section->data + st_name; |
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244 | return sym_name; |
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245 | } |
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246 | |||
9617 | turbocat | 247 | int tcc_find_symbol_me(me_info* me, const char *sym_name, int* addr) |
609 | andrew_pro | 248 | { |
9617 | turbocat | 249 | int i, symtab = 0, strtab = 0; |
250 | *addr = 0; |
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609 | andrew_pro | 251 | for (i=1;i |
252 | { |
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253 | Section* s; |
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254 | s=me->s1->sections[i]; |
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255 | if (strcmp(s->name,".symtab")==0) |
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256 | { |
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257 | symtab=i; |
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258 | } |
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259 | if (strcmp(s->name,".strtab")==0) |
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260 | { |
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261 | strtab=i; |
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262 | } |
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263 | } |
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264 | if (symtab==0 || strtab==0) |
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6429 | siemargl | 265 | { |
266 | tcc_error_noabort("undefined sections .symtab or .strtab on linking '%s'", sym_name); |
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609 | andrew_pro | 267 | return 0; |
6429 | siemargl | 268 | } |
609 | andrew_pro | 269 | Elf32_Sym* s,*se; |
270 | char* name; |
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271 | s=(Elf32_Sym*)me->s1->sections[symtab]->data; |
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272 | se=(Elf32_Sym*)(((void*)s)+me->s1->sections[symtab]->data_offset); |
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273 | name=(char*)me->s1->sections[strtab]->data; |
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274 | while (s |
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275 | { |
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276 | if (strcmp(name+s->st_name,sym_name)==0) |
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277 | { |
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9617 | turbocat | 278 | *addr = s->st_value+findsection(me,s->st_shndx)->sh_addr; |
279 | return 1; |
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609 | andrew_pro | 280 | } |
281 | s++; |
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282 | } |
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6429 | siemargl | 283 | tcc_error_noabort("undefined symbol '%s'", sym_name); |
609 | andrew_pro | 284 | return 0; |
285 | } |
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6429 | siemargl | 286 | |
609 | andrew_pro | 287 | const char* me_magic="MENUET01"; |
288 | int tcc_output_me(TCCState* s1,const char *filename) |
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289 | { |
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290 | me_info me; |
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291 | int i; |
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292 | FILE* f; |
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293 | //printf("%d\n",s1->nb_sections); |
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294 | memset(&me,0,sizeof(me)); |
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295 | me.s1=s1; |
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9284 | Coldy | 296 | #ifdef TCC_TARGET_KX |
297 | kx_init(&me); |
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298 | #endif |
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9615 | turbocat | 299 | tcc_add_runtime(s1); |
609 | andrew_pro | 300 | relocate_common_syms(); |
301 | assign_addresses(&me); |
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8786 | turbocat | 302 | |
6441 | siemargl | 303 | if (s1->do_debug) |
304 | tcc_output_dbgme(filename, &me); |
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305 | |||
9617 | turbocat | 306 | if (!tcc_find_symbol_me(&me, "start", &me.header.entry_point) | |
307 | !tcc_find_symbol_me(&me, "__argv", &me.header.params) | |
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308 | !tcc_find_symbol_me(&me, "__path", &me.header.argv)) { |
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309 | exit(1); |
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9615 | turbocat | 310 | } |
311 | |||
8716 | turbocat | 312 | if((f=fopen(filename,"wb"))==NULL){ |
313 | tcc_error("could not create '%s': %s", filename, strerror(errno)); |
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314 | } |
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315 | |||
609 | andrew_pro | 316 | for (i=0;i<8;i++) |
317 | me.header.magic[i]=me_magic[i]; |
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318 | fwrite(&me.header,1,sizeof(IMAGE_MEOS_FILE_HEADER),f); |
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9284 | Coldy | 319 | #ifdef TCC_TARGET_KX |
320 | kx_write_header(&me, f); |
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321 | #endif |
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609 | andrew_pro | 322 | meos_section_info* si; |
323 | for(si=me.code_sections;si;si=si->next) |
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324 | fwrite(si->data,1,si->data_size,f); |
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325 | for (si=me.data_sections;si;si=si->next) |
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8157 | Boppan | 326 | fwrite(si->data,1,si->data_size,f); |
9284 | Coldy | 327 | #ifdef TCC_TARGET_KX |
328 | kx_write_imports(&me, f); |
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329 | kx_free(&me); |
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330 | #else |
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8157 | Boppan | 331 | if (!s1->nobss) |
6858 | siemargl | 332 | { |
8157 | Boppan | 333 | for (si=me.bss_sections;si;si=si->next) |
6858 | siemargl | 334 | { |
8157 | Boppan | 335 | if (si->data == NULL) |
336 | { |
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337 | // printf("\nError! BSS data is NULL! size:%i",(int)si->data_size); |
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338 | si->data = calloc(si->data_size, 1); |
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339 | } |
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340 | fwrite(si->data, 1, si->data_size, f); |
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341 | } |
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342 | } |
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343 | /* |
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344 | if (me.bss_sections) // Siemargl testin, what we lose |
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345 | { |
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6441 | siemargl | 346 | tcc_error_noabort("We lose .BSS section when linking KOS32 executable"); |
8157 | Boppan | 347 | } |
6441 | siemargl | 348 | */ |
9284 | Coldy | 349 | #endif |
609 | andrew_pro | 350 | fclose(f); |
351 | return 0; |
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352 | } |
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6429 | siemargl | 353 | |
8677 | turbocat | 354 | #if !defined(_WIN32) && !defined(TCC_TARGET_MEOS_LINUX) |
6429 | siemargl | 355 | |
356 | static inline int get_current_folder(char* buf, int bufsize){ |
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357 | register int val; |
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358 | asm volatile ("int $0x40":"=a"(val):"a"(30), "b"(2), "c"(buf), "d"(bufsize)); |
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359 | return val; |
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360 | } |
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361 | |||
8678 | turbocat | 362 | |
6429 | siemargl | 363 | char *getcwd(char *buf, size_t size) |
364 | { |
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365 | int rc = get_current_folder(buf, size); |
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366 | if (rc > size) |
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367 | { |
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368 | errno = ERANGE; |
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369 | return 0; |
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370 | } |
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371 | else |
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372 | return buf; |
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373 | } |
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374 | |||
375 | #endif |
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8157 | Boppan | 376 | |
377 | |||
378 | static FILE *src_file; |
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379 | static int next_src_line; |
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380 | |||
381 | void close_source_file() |
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382 | { |
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383 | if (src_file) |
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384 | fclose(src_file); |
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385 | src_file = NULL; |
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386 | } |
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387 | |||
388 | void load_source_file(char *fname) |
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389 | { |
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390 | close_source_file(); |
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6441 | siemargl | 391 | src_file = fopen(fname,"rt"); |
8157 | Boppan | 392 | if (!src_file) return; |
393 | next_src_line = 1; |
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394 | } |
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6441 | siemargl | 395 | |
8157 | Boppan | 396 | int get_src_lines(char *buf, int sz, int start, int end) |
397 | // 1 if read |
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398 | { |
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399 | char line[255], *ch; |
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400 | strcpy(buf, ""); |
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401 | if (!src_file) return 0; |
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402 | while (next_src_line < start) // skip |
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403 | { |
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404 | ch = fgets(line, sizeof line, src_file); |
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405 | if (!ch) return 0; |
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406 | next_src_line++; |
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407 | } |
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408 | while (next_src_line <= end) |
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409 | { |
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410 | ch = fgets(line, sizeof line, src_file); |
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411 | if (!ch) return 0; |
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412 | next_src_line++; |
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413 | strncat(buf, line, sz - strlen(buf) - 1); |
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414 | } |
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415 | // remove newlines |
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416 | for (ch = buf; *ch; ch++) |
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417 | if (strchr("\t\n\r", *ch)) *ch = ' '; |
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418 | |||
419 | return 1; |
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420 | } |
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421 | |||
6441 | siemargl | 422 | int tcc_output_dbgme(const char *filename, me_info* me) |
423 | // by Siemargl. Writes filename.dbg file for source code level debuggin with MTDBG |
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424 | // return 1 on error |
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425 | { |
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426 | FILE *fdbg; |
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8157 | Boppan | 427 | char fname[400], |
428 | buf[80]; // no more fits in mtdbg string |
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6441 | siemargl | 429 | |
430 | strcpy(fname, filename); |
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431 | strcat(fname, ".dbg"); |
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432 | fdbg = fopen(fname,"wt"); |
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433 | if (!fdbg) return 1; |
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434 | |||
8157 | Boppan | 435 | meos_section_info *si, *ss; |
436 | fputs(".text\n", fdbg); // just for mtbg |
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437 | |||
438 | // print symbol table with resolved addresses |
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439 | Elf32_Sym* esym; |
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440 | for (esym = (Elf32_Sym*)symtab_section->data; esym <= (Elf32_Sym*)(symtab_section->data + symtab_section->data_offset); esym++) |
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441 | { |
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442 | if (esym->st_info == 0 || esym->st_info == 4) continue; |
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6441 | siemargl | 443 | int sect = esym->st_shndx; |
444 | ss = findsection(me, sect); |
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445 | const char *sym_name = strtab_section->data + esym->st_name; |
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446 | if (ss == 0) |
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447 | { |
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448 | fprintf(fdbg, "undefined symbol '%s' type(%d)\n", sym_name, esym->st_info); |
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449 | continue; |
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450 | } |
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451 | fprintf(fdbg, "0x%X %s\n", ss->sh_addr + esym->st_value, sym_name); // removed type(%d) esym->st_info |
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8157 | Boppan | 452 | } |
453 | |||
454 | fputs(".text source code links\n", fdbg); // just for mtbg |
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455 | // print symbol table with resolved addresses |
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456 | Stab_Sym *stab; |
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457 | char *str = "", *cur_file = "???", cur_fun[255]; |
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458 | int cur_line = 0, cur_fun_addr = 0, fun_flag = 0; |
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459 | strcpy(cur_fun, "fn???"); |
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460 | for (stab = (Stab_Sym*)stab_section->data; stab <= (Stab_Sym*)(stab_section->data + stab_section->data_offset); stab++) |
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461 | { |
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462 | str = ""; |
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463 | switch(stab->n_type) |
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464 | { |
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465 | case 100: // source file, or path |
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466 | if (stab->n_strx) |
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467 | { |
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468 | cur_file = stabstr_section->data + stab->n_strx; |
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469 | load_source_file(cur_file); |
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470 | } |
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471 | else |
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472 | cur_file = "???"; |
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473 | strcpy(cur_fun, "fn???"); |
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474 | cur_line = 0; |
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475 | cur_fun_addr = 0; |
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476 | fun_flag = 0; |
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477 | break; |
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478 | case 36: // func |
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479 | cur_fun_addr = 0; |
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480 | if (stab->n_strx) |
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481 | { |
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482 | strcpy(cur_fun, stabstr_section->data + stab->n_strx); |
||
483 | str = strchr(cur_fun, ':'); |
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484 | if (str) *str = '\0'; |
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9617 | turbocat | 485 | tcc_find_symbol_me(me, cur_fun, &cur_fun_addr); |
8157 | Boppan | 486 | cur_line = stab->n_desc; |
487 | fun_flag = 1; |
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488 | //fprintf(fdbg, "0x%X %s() line(%d)\n", cur_fun_addr, cur_fun, cur_line); // commented as conflicted with direct address |
||
489 | } |
||
490 | else |
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491 | strcpy(cur_fun, "fn???"); |
||
492 | break; |
||
493 | case 68: // N_SLINE |
||
494 | if (stab->n_value == 0 ) continue; // skip zero offset line |
||
495 | if (fun_flag) // skip string {, as duplicates address |
||
496 | { |
||
497 | fun_flag = 0; |
||
498 | continue; |
||
499 | } |
||
500 | |||
501 | int line; |
||
502 | if (stab->n_desc > cur_line) |
||
503 | line = cur_line + 1; |
||
504 | else |
||
505 | line = cur_line; |
||
506 | //fprintf(fdbg, "0x%X LINES %d-%d \n", cur_fun_addr + stab->n_value, line, stab->n_desc); |
||
507 | if (get_src_lines(buf, sizeof buf, line, stab->n_desc)) |
||
508 | fprintf(fdbg, "0x%X %s\n", cur_fun_addr + stab->n_value, buf); |
||
509 | |||
510 | cur_line = stab->n_desc; |
||
511 | break; |
||
512 | default: |
||
513 | continue; |
||
514 | } |
||
515 | /* |
||
516 | if (stab->n_strx) |
||
517 | str = stabstr_section->data + stab->n_strx; |
||
518 | fprintf(fdbg, "0x%X type(%d) str(%s) desc(%d)\n", stab->n_value, stab->n_type, str, stab->n_desc); |
||
519 | */ |
||
520 | } |
||
521 | |||
522 | /* for(; si; si = si->next) |
||
523 | { |
||
524 | Section *sr; |
||
6441 | siemargl | 525 | Elf32_Rel *rel, *rel_end; |
526 | for(sr = me->s1->sections[si->sec_num]->reloc; sr; ) |
||
8157 | Boppan | 527 | { |
6441 | siemargl | 528 | for (rel = (Elf32_Rel *) sr->data, rel_end = (Elf32_Rel *) (sr->data + sr->data_offset); rel < rel_end; rel++) |
529 | { |
||
530 | int type = ELF32_R_TYPE(rel->r_info); |
||
531 | if (type != R_386_PC32 && type != R_386_32) |
||
532 | continue; |
||
533 | int sym = ELF32_R_SYM(rel->r_info); |
||
534 | if (sym > symtab_section->data_offset / sizeof(Elf32_Sym)) |
||
535 | continue; |
||
536 | Elf32_Sym* esym = ((Elf32_Sym*)symtab_section->data) + sym; |
||
537 | int sect = esym->st_shndx; |
||
538 | ss = findsection(me, sect); |
||
539 | const char *sym_name = strtab_section->data + esym->st_name; |
||
540 | if (ss == 0) |
||
541 | { |
||
542 | fprintf(fdbg, "undefined symbol '%s'\n", sym_name); |
||
543 | continue; |
||
544 | } |
||
545 | if (rel->r_offset > si->data_size) continue; |
||
546 | fprintf(fdbg, "\t0x%X %s\n", ss->sh_addr + esym->st_value, sym_name); |
||
547 | } |
||
548 | } |
||
8157 | Boppan | 549 | } |
550 | */ |
||
6441 | siemargl | 551 | close_source_file(); |
552 | fclose(fdbg); |
||
553 | return 0; |
||
554 | }>=>=>=>>8;i++) |