# clang++ main.cpp -g2 -gsplit-dwarf -S -fdebug-compilation-dir=. # Modified assembly so that DW_AT_dwo_name has a partial path. # int main() { return 0; } .text .file "main.cpp" .globl main # -- Begin function main .p2align 4, 0x90 .type main,@function main: # @main .Lfunc_begin0: .file 0 "." "main.cpp" md5 0xbb12fec8d002b1f0e06f7dee4604c6cc .loc 0 1 0 # main.cpp:1:0 .cfi_startproc # %bb.0: # %entry pushq %rbp .cfi_def_cfa_offset 16 .cfi_offset %rbp, -16 movq %rsp, %rbp .cfi_def_cfa_register %rbp movl $0, -4(%rbp) .Ltmp0: .loc 0 2 3 prologue_end # main.cpp:2:3 xorl %eax, %eax .loc 0 2 3 epilogue_begin is_stmt 0 # main.cpp:2:3 popq %rbp .cfi_def_cfa %rsp, 8 retq .Ltmp1: .Lfunc_end0: .size main, .Lfunc_end0-main .cfi_endproc # -- End function .section .debug_abbrev,"",@progbits .byte 1 # Abbreviation Code .byte 74 # DW_TAG_skeleton_unit .byte 0 # DW_CHILDREN_no .byte 16 # DW_AT_stmt_list .byte 23 # DW_FORM_sec_offset .byte 114 # DW_AT_str_offsets_base .byte 23 # DW_FORM_sec_offset .byte 27 # DW_AT_comp_dir .byte 37 # DW_FORM_strx1 .ascii "\264B" # DW_AT_GNU_pubnames .byte 25 # DW_FORM_flag_present .byte 118 # DW_AT_dwo_name .byte 37 # DW_FORM_strx1 .byte 17 # DW_AT_low_pc .byte 27 # DW_FORM_addrx .byte 18 # DW_AT_high_pc .byte 6 # DW_FORM_data4 .byte 115 # DW_AT_addr_base .byte 23 # DW_FORM_sec_offset .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 0 # EOM(3) .section .debug_info,"",@progbits .Lcu_begin0: .long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit .Ldebug_info_start0: .short 5 # DWARF version number .byte 4 # DWARF Unit Type .byte 8 # Address Size (in bytes) .long .debug_abbrev # Offset Into Abbrev. Section .quad 6318074710904753300 .byte 1 # Abbrev [1] 0x14:0x14 DW_TAG_skeleton_unit .long .Lline_table_start0 # DW_AT_stmt_list .long .Lstr_offsets_base0 # DW_AT_str_offsets_base .byte 0 # DW_AT_comp_dir # DW_AT_GNU_pubnames .byte 1 # DW_AT_dwo_name .byte 0 # DW_AT_low_pc .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc .long .Laddr_table_base0 # DW_AT_addr_base .Ldebug_info_end0: .section .debug_str_offsets,"",@progbits .long 12 # Length of String Offsets Set .short 5 .short 0 .Lstr_offsets_base0: .section .debug_str,"MS",@progbits,1 .Lskel_string0: .asciz "." # string offset=0 .Lskel_string1: .asciz "objects/o1/split.dwo" # string offset=2 <--- Manually modified. .section .debug_str_offsets,"",@progbits .long .Lskel_string0 .long .Lskel_string1 .section .debug_str_offsets.dwo,"e",@progbits .long 24 # Length of String Offsets Set .short 5 .short 0 .section .debug_str.dwo,"eMS",@progbits,1 .Linfo_string0: .asciz "main" # string offset=0 .Linfo_string1: .asciz "int" # string offset=5 .Linfo_string2: .asciz "clang version 18.0.0" # string offset=9 .Linfo_string3: .asciz "main.cpp" # string offset=30 .Linfo_string4: .asciz "objects/o1/split.dwo" # string offset=39 <--- Manually modified. .section .debug_str_offsets.dwo,"e",@progbits .long 0 .long 5 .long 9 .long 30 .long 39 .section .debug_info.dwo,"e",@progbits .long .Ldebug_info_dwo_end0-.Ldebug_info_dwo_start0 # Length of Unit .Ldebug_info_dwo_start0: .short 5 # DWARF version number .byte 5 # DWARF Unit Type .byte 8 # Address Size (in bytes) .long 0 # Offset Into Abbrev. Section .quad 6318074710904753300 .byte 1 # Abbrev [1] 0x14:0x1a DW_TAG_compile_unit .byte 2 # DW_AT_producer .short 33 # DW_AT_language .byte 3 # DW_AT_name .byte 4 # DW_AT_dwo_name .byte 2 # Abbrev [2] 0x1a:0xf DW_TAG_subprogram .byte 0 # DW_AT_low_pc .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc .byte 1 # DW_AT_frame_base .byte 86 .byte 0 # DW_AT_name .byte 0 # DW_AT_decl_file .byte 1 # DW_AT_decl_line .long 41 # DW_AT_type # DW_AT_external .byte 3 # Abbrev [3] 0x29:0x4 DW_TAG_base_type .byte 1 # DW_AT_name .byte 5 # DW_AT_encoding .byte 4 # DW_AT_byte_size .byte 0 # End Of Children Mark .Ldebug_info_dwo_end0: .section .debug_abbrev.dwo,"e",@progbits .byte 1 # Abbreviation Code .byte 17 # DW_TAG_compile_unit .byte 1 # DW_CHILDREN_yes .byte 37 # DW_AT_producer .byte 37 # DW_FORM_strx1 .byte 19 # DW_AT_language .byte 5 # DW_FORM_data2 .byte 3 # DW_AT_name .byte 37 # DW_FORM_strx1 .byte 118 # DW_AT_dwo_name .byte 37 # DW_FORM_strx1 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 2 # Abbreviation Code .byte 46 # DW_TAG_subprogram .byte 0 # DW_CHILDREN_no .byte 17 # DW_AT_low_pc .byte 27 # DW_FORM_addrx .byte 18 # DW_AT_high_pc .byte 6 # DW_FORM_data4 .byte 64 # DW_AT_frame_base .byte 24 # DW_FORM_exprloc .byte 3 # DW_AT_name .byte 37 # DW_FORM_strx1 .byte 58 # DW_AT_decl_file .byte 11 # DW_FORM_data1 .byte 59 # DW_AT_decl_line .byte 11 # DW_FORM_data1 .byte 73 # DW_AT_type .byte 19 # DW_FORM_ref4 .byte 63 # DW_AT_external .byte 25 # DW_FORM_flag_present .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 3 # Abbreviation Code .byte 36 # DW_TAG_base_type .byte 0 # DW_CHILDREN_no .byte 3 # DW_AT_name .byte 37 # DW_FORM_strx1 .byte 62 # DW_AT_encoding .byte 11 # DW_FORM_data1 .byte 11 # DW_AT_byte_size .byte 11 # DW_FORM_data1 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 0 # EOM(3) .section .debug_addr,"",@progbits .long .Ldebug_addr_end0-.Ldebug_addr_start0 # Length of contribution .Ldebug_addr_start0: .short 5 # DWARF version number .byte 8 # Address size .byte 0 # Segment selector size .Laddr_table_base0: .quad .Lfunc_begin0 .Ldebug_addr_end0: .section .debug_gnu_pubnames,"",@progbits .long .LpubNames_end0-.LpubNames_start0 # Length of Public Names Info .LpubNames_start0: .short 2 # DWARF Version .long .Lcu_begin0 # Offset of Compilation Unit Info .long 40 # Compilation Unit Length .long 26 # DIE offset .byte 48 # Attributes: FUNCTION, EXTERNAL .asciz "main" # External Name .long 0 # End Mark .LpubNames_end0: .section .debug_gnu_pubtypes,"",@progbits .long .LpubTypes_end0-.LpubTypes_start0 # Length of Public Types Info .LpubTypes_start0: .short 2 # DWARF Version .long .Lcu_begin0 # Offset of Compilation Unit Info .long 40 # Compilation Unit Length .long 41 # DIE offset .byte 144 # Attributes: TYPE, STATIC .asciz "int" # External Name .long 0 # End Mark .LpubTypes_end0: .ident "clang version 18.0.0" .section ".note.GNU-stack","",@progbits .addrsig .section .debug_line,"",@progbits .Lline_table_start0: