1# clang++ main.cpp -ggnu-pubnames -g2 -gdwarf-4 -fdebug-types-section -S -o 2# typedef struct 3# { 4# unsigned a; 5# unsigned b; 6# } S; 7# 8# int main() { 9# S s; 10# s.a = 0x64A40101; 11# } 12 .text 13 .file "main.cpp" 14 .globl main # -- Begin function main 15 .p2align 4, 0x90 16 .type main,@function 17main: # @main 18.Lfunc_begin0: 19 .file 1 "/dwarf4-lenght-test" "main.cpp" 20 .loc 1 7 0 # main.cpp:7:0 21 .cfi_startproc 22# %bb.0: 23 pushq %rbp 24 .cfi_def_cfa_offset 16 25 .cfi_offset %rbp, -16 26 movq %rsp, %rbp 27 .cfi_def_cfa_register %rbp 28.Ltmp0: 29 .loc 1 9 7 prologue_end # main.cpp:9:7 30 movl $1688469761, -8(%rbp) # imm = 0x64A40101 31 .loc 1 10 1 # main.cpp:10:1 32 xorl %eax, %eax 33 .loc 1 10 1 epilogue_begin is_stmt 0 # main.cpp:10:1 34 popq %rbp 35 .cfi_def_cfa %rsp, 8 36 retq 37.Ltmp1: 38.Lfunc_end0: 39 .size main, .Lfunc_end0-main 40 .cfi_endproc 41 # -- End function 42 .section .debug_types,"G",@progbits,4721183873463917179,comdat 43 .long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit 44.Ldebug_info_start0: 45 .short 4 # DWARF version number 46 .long .debug_abbrev # Offset Into Abbrev. Section 47 .byte 8 # Address Size (in bytes) 48 .quad 4721183873463917179 # Type Signature 49 .long 30 # Type DIE Offset 50 .byte 1 # Abbrev [1] 0x17:0x2d DW_TAG_type_unit 51 .short 33 # DW_AT_language 52 .long .Lline_table_start0 # DW_AT_stmt_list 53 .byte 2 # Abbrev [2] 0x1e:0x1e DW_TAG_structure_type 54 .byte 5 # DW_AT_calling_convention 55 .byte 8 # DW_AT_byte_size 56 .byte 1 # DW_AT_decl_file 57 .byte 1 # DW_AT_decl_line 58 .byte 3 # Abbrev [3] 0x23:0xc DW_TAG_member 59 .long .Linfo_string6 # DW_AT_name 60 .long 60 # DW_AT_type 61 .byte 1 # DW_AT_decl_file 62 .byte 3 # DW_AT_decl_line 63 .byte 0 # DW_AT_data_member_location 64 .byte 3 # Abbrev [3] 0x2f:0xc DW_TAG_member 65 .long .Linfo_string8 # DW_AT_name 66 .long 60 # DW_AT_type 67 .byte 1 # DW_AT_decl_file 68 .byte 4 # DW_AT_decl_line 69 .byte 4 # DW_AT_data_member_location 70 .byte 0 # End Of Children Mark 71 .byte 4 # Abbrev [4] 0x3c:0x7 DW_TAG_base_type 72 .long .Linfo_string7 # DW_AT_name 73 .byte 7 # DW_AT_encoding 74 .byte 4 # DW_AT_byte_size 75 .byte 0 # End Of Children Mark 76.Ldebug_info_end0: 77 .section .debug_abbrev,"",@progbits 78 .byte 1 # Abbreviation Code 79 .byte 65 # DW_TAG_type_unit 80 .byte 1 # DW_CHILDREN_yes 81 .byte 19 # DW_AT_language 82 .byte 5 # DW_FORM_data2 83 .byte 16 # DW_AT_stmt_list 84 .byte 23 # DW_FORM_sec_offset 85 .byte 0 # EOM(1) 86 .byte 0 # EOM(2) 87 .byte 2 # Abbreviation Code 88 .byte 19 # DW_TAG_structure_type 89 .byte 1 # DW_CHILDREN_yes 90 .byte 54 # DW_AT_calling_convention 91 .byte 11 # DW_FORM_data1 92 .byte 11 # DW_AT_byte_size 93 .byte 11 # DW_FORM_data1 94 .byte 58 # DW_AT_decl_file 95 .byte 11 # DW_FORM_data1 96 .byte 59 # DW_AT_decl_line 97 .byte 11 # DW_FORM_data1 98 .byte 0 # EOM(1) 99 .byte 0 # EOM(2) 100 .byte 3 # Abbreviation Code 101 .byte 13 # DW_TAG_member 102 .byte 0 # DW_CHILDREN_no 103 .byte 3 # DW_AT_name 104 .byte 14 # DW_FORM_strp 105 .byte 73 # DW_AT_type 106 .byte 19 # DW_FORM_ref4 107 .byte 58 # DW_AT_decl_file 108 .byte 11 # DW_FORM_data1 109 .byte 59 # DW_AT_decl_line 110 .byte 11 # DW_FORM_data1 111 .byte 56 # DW_AT_data_member_location 112 .byte 11 # DW_FORM_data1 113 .byte 0 # EOM(1) 114 .byte 0 # EOM(2) 115 .byte 4 # Abbreviation Code 116 .byte 36 # DW_TAG_base_type 117 .byte 0 # DW_CHILDREN_no 118 .byte 3 # DW_AT_name 119 .byte 14 # DW_FORM_strp 120 .byte 62 # DW_AT_encoding 121 .byte 11 # DW_FORM_data1 122 .byte 11 # DW_AT_byte_size 123 .byte 11 # DW_FORM_data1 124 .byte 0 # EOM(1) 125 .byte 0 # EOM(2) 126 .byte 5 # Abbreviation Code 127 .byte 17 # DW_TAG_compile_unit 128 .byte 1 # DW_CHILDREN_yes 129 .byte 37 # DW_AT_producer 130 .byte 14 # DW_FORM_strp 131 .byte 19 # DW_AT_language 132 .byte 5 # DW_FORM_data2 133 .byte 3 # DW_AT_name 134 .byte 14 # DW_FORM_strp 135 .byte 16 # DW_AT_stmt_list 136 .byte 23 # DW_FORM_sec_offset 137 .byte 27 # DW_AT_comp_dir 138 .byte 14 # DW_FORM_strp 139 .ascii "\264B" # DW_AT_GNU_pubnames 140 .byte 25 # DW_FORM_flag_present 141 .byte 17 # DW_AT_low_pc 142 .byte 1 # DW_FORM_addr 143 .byte 18 # DW_AT_high_pc 144 .byte 6 # DW_FORM_data4 145 .byte 0 # EOM(1) 146 .byte 0 # EOM(2) 147 .byte 6 # Abbreviation Code 148 .byte 46 # DW_TAG_subprogram 149 .byte 1 # DW_CHILDREN_yes 150 .byte 17 # DW_AT_low_pc 151 .byte 1 # DW_FORM_addr 152 .byte 18 # DW_AT_high_pc 153 .byte 6 # DW_FORM_data4 154 .byte 64 # DW_AT_frame_base 155 .byte 24 # DW_FORM_exprloc 156 .byte 3 # DW_AT_name 157 .byte 14 # DW_FORM_strp 158 .byte 58 # DW_AT_decl_file 159 .byte 11 # DW_FORM_data1 160 .byte 59 # DW_AT_decl_line 161 .byte 11 # DW_FORM_data1 162 .byte 73 # DW_AT_type 163 .byte 19 # DW_FORM_ref4 164 .byte 63 # DW_AT_external 165 .byte 25 # DW_FORM_flag_present 166 .byte 0 # EOM(1) 167 .byte 0 # EOM(2) 168 .byte 7 # Abbreviation Code 169 .byte 52 # DW_TAG_variable 170 .byte 0 # DW_CHILDREN_no 171 .byte 2 # DW_AT_location 172 .byte 24 # DW_FORM_exprloc 173 .byte 3 # DW_AT_name 174 .byte 14 # DW_FORM_strp 175 .byte 58 # DW_AT_decl_file 176 .byte 11 # DW_FORM_data1 177 .byte 59 # DW_AT_decl_line 178 .byte 11 # DW_FORM_data1 179 .byte 73 # DW_AT_type 180 .byte 19 # DW_FORM_ref4 181 .byte 0 # EOM(1) 182 .byte 0 # EOM(2) 183 .byte 8 # Abbreviation Code 184 .byte 22 # DW_TAG_typedef 185 .byte 0 # DW_CHILDREN_no 186 .byte 73 # DW_AT_type 187 .byte 19 # DW_FORM_ref4 188 .byte 3 # DW_AT_name 189 .byte 14 # DW_FORM_strp 190 .byte 58 # DW_AT_decl_file 191 .byte 11 # DW_FORM_data1 192 .byte 59 # DW_AT_decl_line 193 .byte 11 # DW_FORM_data1 194 .byte 0 # EOM(1) 195 .byte 0 # EOM(2) 196 .byte 9 # Abbreviation Code 197 .byte 19 # DW_TAG_structure_type 198 .byte 0 # DW_CHILDREN_no 199 .byte 60 # DW_AT_declaration 200 .byte 25 # DW_FORM_flag_present 201 .byte 105 # DW_AT_signature 202 .byte 32 # DW_FORM_ref_sig8 203 .byte 0 # EOM(1) 204 .byte 0 # EOM(2) 205 .byte 0 # EOM(3) 206 .section .debug_info,"",@progbits 207.Lcu_begin0: 208 .long .Ldebug_info_end1-.Ldebug_info_start1 # Length of Unit 209.Ldebug_info_start1: 210 .short 4 # DWARF version number 211 .long .debug_abbrev # Offset Into Abbrev. Section 212 .byte 8 # Address Size (in bytes) 213 .byte 5 # Abbrev [5] 0xb:0x63 DW_TAG_compile_unit 214 .long .Linfo_string0 # DW_AT_producer 215 .short 33 # DW_AT_language 216 .long .Linfo_string1 # DW_AT_name 217 .long .Lline_table_start0 # DW_AT_stmt_list 218 .long .Linfo_string2 # DW_AT_comp_dir 219 # DW_AT_GNU_pubnames 220 .quad .Lfunc_begin0 # DW_AT_low_pc 221 .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc 222 .byte 6 # Abbrev [6] 0x2a:0x28 DW_TAG_subprogram 223 .quad .Lfunc_begin0 # DW_AT_low_pc 224 .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc 225 .byte 1 # DW_AT_frame_base 226 .byte 86 227 .long .Linfo_string3 # DW_AT_name 228 .byte 1 # DW_AT_decl_file 229 .byte 7 # DW_AT_decl_line 230 .long 82 # DW_AT_type 231 # DW_AT_external 232 .byte 7 # Abbrev [7] 0x43:0xe DW_TAG_variable 233 .byte 2 # DW_AT_location 234 .byte 145 235 .byte 120 236 .long .Linfo_string5 # DW_AT_name 237 .byte 1 # DW_AT_decl_file 238 .byte 8 # DW_AT_decl_line 239 .long 89 # DW_AT_type 240 .byte 0 # End Of Children Mark 241 .byte 4 # Abbrev [4] 0x52:0x7 DW_TAG_base_type 242 .long .Linfo_string4 # DW_AT_name 243 .byte 5 # DW_AT_encoding 244 .byte 4 # DW_AT_byte_size 245 .byte 8 # Abbrev [8] 0x59:0xb DW_TAG_typedef 246 .long 100 # DW_AT_type 247 .long .Linfo_string9 # DW_AT_name 248 .byte 1 # DW_AT_decl_file 249 .byte 5 # DW_AT_decl_line 250 .byte 9 # Abbrev [9] 0x64:0x9 DW_TAG_structure_type 251 # DW_AT_declaration 252 .quad 4721183873463917179 # DW_AT_signature 253 .byte 0 # End Of Children Mark 254.Ldebug_info_end1: 255 .section .debug_str,"MS",@progbits,1 256.Linfo_string0: 257 .asciz "clang version 15.0.0" # string offset=0 258.Linfo_string1: 259 .asciz "main.cpp" # string offset=146 260.Linfo_string2: 261 .asciz "/dwarf4-lenght-test" # string offset=155 262.Linfo_string3: 263 .asciz "main" # string offset=212 264.Linfo_string4: 265 .asciz "int" # string offset=217 266.Linfo_string5: 267 .asciz "s" # string offset=221 268.Linfo_string6: 269 .asciz "a" # string offset=223 270.Linfo_string7: 271 .asciz "unsigned int" # string offset=225 272.Linfo_string8: 273 .asciz "b" # string offset=238 274.Linfo_string9: 275 .asciz "S" # string offset=240 276 .section .debug_gnu_pubnames,"",@progbits 277 .long .LpubNames_end0-.LpubNames_start0 # Length of Public Names Info 278.LpubNames_start0: 279 .short 2 # DWARF Version 280 .long .Lcu_begin0 # Offset of Compilation Unit Info 281 .long 110 # Compilation Unit Length 282 .long 42 # DIE offset 283 .byte 48 # Attributes: FUNCTION, EXTERNAL 284 .asciz "main" # External Name 285 .long 0 # End Mark 286.LpubNames_end0: 287 .section .debug_gnu_pubtypes,"",@progbits 288 .long .LpubTypes_end0-.LpubTypes_start0 # Length of Public Types Info 289.LpubTypes_start0: 290 .short 2 # DWARF Version 291 .long .Lcu_begin0 # Offset of Compilation Unit Info 292 .long 110 # Compilation Unit Length 293 .long 82 # DIE offset 294 .byte 144 # Attributes: TYPE, STATIC 295 .asciz "int" # External Name 296 .long 89 # DIE offset 297 .byte 144 # Attributes: TYPE, STATIC 298 .asciz "S" # External Name 299 .long 11 # DIE offset 300 .byte 16 # Attributes: TYPE, EXTERNAL 301 .asciz "unsigned int" # External Name 302 .long 0 # End Mark 303.LpubTypes_end0: 304 .ident "clang version 15.0.0)" 305 .section ".note.GNU-stack","",@progbits 306 .addrsig 307 .section .debug_line,"",@progbits 308.Lline_table_start0: 309