1# clang++ main.cpp -g2 -gsplit-dwarf -S -fdebug-compilation-dir=. 2# Modified assembly so that DW_AT_dwo_name has a partial path. 3# int main() { return 0; } 4 5 .text 6 .file "main.cpp" 7 .globl main # -- Begin function main 8 .p2align 4, 0x90 9 .type main,@function 10main: # @main 11.Lfunc_begin0: 12 .file 0 "." "main.cpp" md5 0xbb12fec8d002b1f0e06f7dee4604c6cc 13 .loc 0 1 0 # main.cpp:1:0 14 .cfi_startproc 15# %bb.0: # %entry 16 pushq %rbp 17 .cfi_def_cfa_offset 16 18 .cfi_offset %rbp, -16 19 movq %rsp, %rbp 20 .cfi_def_cfa_register %rbp 21 movl $0, -4(%rbp) 22.Ltmp0: 23 .loc 0 2 3 prologue_end # main.cpp:2:3 24 xorl %eax, %eax 25 .loc 0 2 3 epilogue_begin is_stmt 0 # main.cpp:2:3 26 popq %rbp 27 .cfi_def_cfa %rsp, 8 28 retq 29.Ltmp1: 30.Lfunc_end0: 31 .size main, .Lfunc_end0-main 32 .cfi_endproc 33 # -- End function 34 .section .debug_abbrev,"",@progbits 35 .byte 1 # Abbreviation Code 36 .byte 74 # DW_TAG_skeleton_unit 37 .byte 0 # DW_CHILDREN_no 38 .byte 16 # DW_AT_stmt_list 39 .byte 23 # DW_FORM_sec_offset 40 .byte 114 # DW_AT_str_offsets_base 41 .byte 23 # DW_FORM_sec_offset 42 .byte 27 # DW_AT_comp_dir 43 .byte 37 # DW_FORM_strx1 44 .ascii "\264B" # DW_AT_GNU_pubnames 45 .byte 25 # DW_FORM_flag_present 46 .byte 118 # DW_AT_dwo_name 47 .byte 37 # DW_FORM_strx1 48 .byte 17 # DW_AT_low_pc 49 .byte 27 # DW_FORM_addrx 50 .byte 18 # DW_AT_high_pc 51 .byte 6 # DW_FORM_data4 52 .byte 115 # DW_AT_addr_base 53 .byte 23 # DW_FORM_sec_offset 54 .byte 0 # EOM(1) 55 .byte 0 # EOM(2) 56 .byte 0 # EOM(3) 57 .section .debug_info,"",@progbits 58.Lcu_begin0: 59 .long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit 60.Ldebug_info_start0: 61 .short 5 # DWARF version number 62 .byte 4 # DWARF Unit Type 63 .byte 8 # Address Size (in bytes) 64 .long .debug_abbrev # Offset Into Abbrev. Section 65 .quad 6318074710904753300 66 .byte 1 # Abbrev [1] 0x14:0x14 DW_TAG_skeleton_unit 67 .long .Lline_table_start0 # DW_AT_stmt_list 68 .long .Lstr_offsets_base0 # DW_AT_str_offsets_base 69 .byte 0 # DW_AT_comp_dir 70 # DW_AT_GNU_pubnames 71 .byte 1 # DW_AT_dwo_name 72 .byte 0 # DW_AT_low_pc 73 .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc 74 .long .Laddr_table_base0 # DW_AT_addr_base 75.Ldebug_info_end0: 76 .section .debug_str_offsets,"",@progbits 77 .long 12 # Length of String Offsets Set 78 .short 5 79 .short 0 80.Lstr_offsets_base0: 81 .section .debug_str,"MS",@progbits,1 82.Lskel_string0: 83 .asciz "." # string offset=0 84.Lskel_string1: 85 .asciz "objects/o1/split.dwo" # string offset=2 <--- Manually modified. 86 .section .debug_str_offsets,"",@progbits 87 .long .Lskel_string0 88 .long .Lskel_string1 89 .section .debug_str_offsets.dwo,"e",@progbits 90 .long 24 # Length of String Offsets Set 91 .short 5 92 .short 0 93 .section .debug_str.dwo,"eMS",@progbits,1 94.Linfo_string0: 95 .asciz "main" # string offset=0 96.Linfo_string1: 97 .asciz "int" # string offset=5 98.Linfo_string2: 99 .asciz "clang version 18.0.0" # string offset=9 100.Linfo_string3: 101 .asciz "main.cpp" # string offset=30 102.Linfo_string4: 103 .asciz "objects/o1/split.dwo" # string offset=39 <--- Manually modified. 104 .section .debug_str_offsets.dwo,"e",@progbits 105 .long 0 106 .long 5 107 .long 9 108 .long 30 109 .long 39 110 .section .debug_info.dwo,"e",@progbits 111 .long .Ldebug_info_dwo_end0-.Ldebug_info_dwo_start0 # Length of Unit 112.Ldebug_info_dwo_start0: 113 .short 5 # DWARF version number 114 .byte 5 # DWARF Unit Type 115 .byte 8 # Address Size (in bytes) 116 .long 0 # Offset Into Abbrev. Section 117 .quad 6318074710904753300 118 .byte 1 # Abbrev [1] 0x14:0x1a DW_TAG_compile_unit 119 .byte 2 # DW_AT_producer 120 .short 33 # DW_AT_language 121 .byte 3 # DW_AT_name 122 .byte 4 # DW_AT_dwo_name 123 .byte 2 # Abbrev [2] 0x1a:0xf DW_TAG_subprogram 124 .byte 0 # DW_AT_low_pc 125 .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc 126 .byte 1 # DW_AT_frame_base 127 .byte 86 128 .byte 0 # DW_AT_name 129 .byte 0 # DW_AT_decl_file 130 .byte 1 # DW_AT_decl_line 131 .long 41 # DW_AT_type 132 # DW_AT_external 133 .byte 3 # Abbrev [3] 0x29:0x4 DW_TAG_base_type 134 .byte 1 # DW_AT_name 135 .byte 5 # DW_AT_encoding 136 .byte 4 # DW_AT_byte_size 137 .byte 0 # End Of Children Mark 138.Ldebug_info_dwo_end0: 139 .section .debug_abbrev.dwo,"e",@progbits 140 .byte 1 # Abbreviation Code 141 .byte 17 # DW_TAG_compile_unit 142 .byte 1 # DW_CHILDREN_yes 143 .byte 37 # DW_AT_producer 144 .byte 37 # DW_FORM_strx1 145 .byte 19 # DW_AT_language 146 .byte 5 # DW_FORM_data2 147 .byte 3 # DW_AT_name 148 .byte 37 # DW_FORM_strx1 149 .byte 118 # DW_AT_dwo_name 150 .byte 37 # DW_FORM_strx1 151 .byte 0 # EOM(1) 152 .byte 0 # EOM(2) 153 .byte 2 # Abbreviation Code 154 .byte 46 # DW_TAG_subprogram 155 .byte 0 # DW_CHILDREN_no 156 .byte 17 # DW_AT_low_pc 157 .byte 27 # DW_FORM_addrx 158 .byte 18 # DW_AT_high_pc 159 .byte 6 # DW_FORM_data4 160 .byte 64 # DW_AT_frame_base 161 .byte 24 # DW_FORM_exprloc 162 .byte 3 # DW_AT_name 163 .byte 37 # DW_FORM_strx1 164 .byte 58 # DW_AT_decl_file 165 .byte 11 # DW_FORM_data1 166 .byte 59 # DW_AT_decl_line 167 .byte 11 # DW_FORM_data1 168 .byte 73 # DW_AT_type 169 .byte 19 # DW_FORM_ref4 170 .byte 63 # DW_AT_external 171 .byte 25 # DW_FORM_flag_present 172 .byte 0 # EOM(1) 173 .byte 0 # EOM(2) 174 .byte 3 # Abbreviation Code 175 .byte 36 # DW_TAG_base_type 176 .byte 0 # DW_CHILDREN_no 177 .byte 3 # DW_AT_name 178 .byte 37 # DW_FORM_strx1 179 .byte 62 # DW_AT_encoding 180 .byte 11 # DW_FORM_data1 181 .byte 11 # DW_AT_byte_size 182 .byte 11 # DW_FORM_data1 183 .byte 0 # EOM(1) 184 .byte 0 # EOM(2) 185 .byte 0 # EOM(3) 186 .section .debug_addr,"",@progbits 187 .long .Ldebug_addr_end0-.Ldebug_addr_start0 # Length of contribution 188.Ldebug_addr_start0: 189 .short 5 # DWARF version number 190 .byte 8 # Address size 191 .byte 0 # Segment selector size 192.Laddr_table_base0: 193 .quad .Lfunc_begin0 194.Ldebug_addr_end0: 195 .section .debug_gnu_pubnames,"",@progbits 196 .long .LpubNames_end0-.LpubNames_start0 # Length of Public Names Info 197.LpubNames_start0: 198 .short 2 # DWARF Version 199 .long .Lcu_begin0 # Offset of Compilation Unit Info 200 .long 40 # Compilation Unit Length 201 .long 26 # DIE offset 202 .byte 48 # Attributes: FUNCTION, EXTERNAL 203 .asciz "main" # External Name 204 .long 0 # End Mark 205.LpubNames_end0: 206 .section .debug_gnu_pubtypes,"",@progbits 207 .long .LpubTypes_end0-.LpubTypes_start0 # Length of Public Types Info 208.LpubTypes_start0: 209 .short 2 # DWARF Version 210 .long .Lcu_begin0 # Offset of Compilation Unit Info 211 .long 40 # Compilation Unit Length 212 .long 41 # DIE offset 213 .byte 144 # Attributes: TYPE, STATIC 214 .asciz "int" # External Name 215 .long 0 # End Mark 216.LpubTypes_end0: 217 .ident "clang version 18.0.0" 218 .section ".note.GNU-stack","",@progbits 219 .addrsig 220 .section .debug_line,"",@progbits 221.Lline_table_start0: 222