1*53a483ceSzhuna# Note: This file is compiled from the following code, for 2*53a483ceSzhuna# the purpose of creating an overflowed dwo section. 3*53a483ceSzhuna# After being compiled from source, section `.debug_info.dwo` 4*53a483ceSzhuna# is changed to have length (2^32 - 30) Bytes, and added 5*53a483ceSzhuna# padding with `.fill` directive, so it is likely to 6*53a483ceSzhuna# overflow when packed with other files. 7*53a483ceSzhuna# 8*53a483ceSzhuna# clang -g -S -gsplit-dwarf -gdwarf-5 hello.c 9*53a483ceSzhuna# 10*53a483ceSzhuna# #include <stdio.h> 11*53a483ceSzhuna# void hello() { 12*53a483ceSzhuna# printf("hello\n"); 13*53a483ceSzhuna# } 14*53a483ceSzhuna 15*53a483ceSzhuna .text 16*53a483ceSzhuna .file "hello.c" 17*53a483ceSzhuna .globl hello # -- Begin function hello 18*53a483ceSzhuna .p2align 4, 0x90 19*53a483ceSzhuna .type hello,@function 20*53a483ceSzhunahello: # @hello 21*53a483ceSzhuna.Lfunc_begin0: 22*53a483ceSzhuna .file 0 "/xxxx/xxxxxxxxxx/xxxxxxxx/hello" "hello.c" md5 0x0b447232502f439981a2fe9f11255f42 23*53a483ceSzhuna .loc 0 3 0 # hello.c:3:0 24*53a483ceSzhuna .cfi_startproc 25*53a483ceSzhuna# %bb.0: # %entry 26*53a483ceSzhuna pushq %rbp 27*53a483ceSzhuna .cfi_def_cfa_offset 16 28*53a483ceSzhuna .cfi_offset %rbp, -16 29*53a483ceSzhuna movq %rsp, %rbp 30*53a483ceSzhuna .cfi_def_cfa_register %rbp 31*53a483ceSzhuna.Ltmp0: 32*53a483ceSzhuna .loc 0 4 5 prologue_end # hello.c:4:5 33*53a483ceSzhuna movabsq $.L.str, %rdi 34*53a483ceSzhuna movb $0, %al 35*53a483ceSzhuna callq printf 36*53a483ceSzhuna .loc 0 5 1 # hello.c:5:1 37*53a483ceSzhuna popq %rbp 38*53a483ceSzhuna .cfi_def_cfa %rsp, 8 39*53a483ceSzhuna retq 40*53a483ceSzhuna.Ltmp1: 41*53a483ceSzhuna.Lfunc_end0: 42*53a483ceSzhuna .size hello, .Lfunc_end0-hello 43*53a483ceSzhuna .cfi_endproc 44*53a483ceSzhuna # -- End function 45*53a483ceSzhuna .type .L.str,@object # @.str 46*53a483ceSzhuna .section .rodata.str1.1,"aMS",@progbits,1 47*53a483ceSzhuna.L.str: 48*53a483ceSzhuna .asciz "hello\n" 49*53a483ceSzhuna .size .L.str, 7 50*53a483ceSzhuna 51*53a483ceSzhuna .section .debug_abbrev,"",@progbits 52*53a483ceSzhuna .byte 1 # Abbreviation Code 53*53a483ceSzhuna .byte 74 # DW_TAG_skeleton_unit 54*53a483ceSzhuna .byte 0 # DW_CHILDREN_no 55*53a483ceSzhuna .byte 16 # DW_AT_stmt_list 56*53a483ceSzhuna .byte 23 # DW_FORM_sec_offset 57*53a483ceSzhuna .byte 114 # DW_AT_str_offsets_base 58*53a483ceSzhuna .byte 23 # DW_FORM_sec_offset 59*53a483ceSzhuna .byte 27 # DW_AT_comp_dir 60*53a483ceSzhuna .byte 37 # DW_FORM_strx1 61*53a483ceSzhuna .ascii "\264B" # DW_AT_GNU_pubnames 62*53a483ceSzhuna .byte 25 # DW_FORM_flag_present 63*53a483ceSzhuna .byte 118 # DW_AT_dwo_name 64*53a483ceSzhuna .byte 37 # DW_FORM_strx1 65*53a483ceSzhuna .byte 17 # DW_AT_low_pc 66*53a483ceSzhuna .byte 27 # DW_FORM_addrx 67*53a483ceSzhuna .byte 18 # DW_AT_high_pc 68*53a483ceSzhuna .byte 6 # DW_FORM_data4 69*53a483ceSzhuna .byte 115 # DW_AT_addr_base 70*53a483ceSzhuna .byte 23 # DW_FORM_sec_offset 71*53a483ceSzhuna .byte 0 # EOM(1) 72*53a483ceSzhuna .byte 0 # EOM(2) 73*53a483ceSzhuna .byte 0 # EOM(3) 74*53a483ceSzhuna .section .debug_info,"",@progbits 75*53a483ceSzhuna.Lcu_begin0: 76*53a483ceSzhuna .long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit 77*53a483ceSzhuna.Ldebug_info_start0: 78*53a483ceSzhuna .short 5 # DWARF version number 79*53a483ceSzhuna .byte 4 # DWARF Unit Type 80*53a483ceSzhuna .byte 8 # Address Size (in bytes) 81*53a483ceSzhuna .long .debug_abbrev # Offset Into Abbrev. Section 82*53a483ceSzhuna .quad -94954012350180462 83*53a483ceSzhuna .byte 1 # Abbrev [1] 0x14:0x14 DW_TAG_skeleton_unit 84*53a483ceSzhuna .long .Lline_table_start0 # DW_AT_stmt_list 85*53a483ceSzhuna .long .Lstr_offsets_base0 # DW_AT_str_offsets_base 86*53a483ceSzhuna .byte 0 # DW_AT_comp_dir 87*53a483ceSzhuna # DW_AT_GNU_pubnames 88*53a483ceSzhuna .byte 1 # DW_AT_dwo_name 89*53a483ceSzhuna .byte 0 # DW_AT_low_pc 90*53a483ceSzhuna .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc 91*53a483ceSzhuna .long .Laddr_table_base0 # DW_AT_addr_base 92*53a483ceSzhuna.Ldebug_info_end0: 93*53a483ceSzhuna .section .debug_str_offsets,"",@progbits 94*53a483ceSzhuna .long 12 95*53a483ceSzhuna .short 5 96*53a483ceSzhuna .short 0 97*53a483ceSzhuna.Lstr_offsets_base0: 98*53a483ceSzhuna .section .debug_str,"MS",@progbits,1 99*53a483ceSzhuna.Lskel_string0: 100*53a483ceSzhuna .asciz "/xxxx/xxxxxxxxxx/xxxxxxxx/hello" # string offset=0 101*53a483ceSzhuna.Lskel_string1: 102*53a483ceSzhuna .asciz "hello.dwo" # string offset=32 103*53a483ceSzhuna .section .debug_str_offsets,"",@progbits 104*53a483ceSzhuna .long .Lskel_string0 105*53a483ceSzhuna .long .Lskel_string1 106*53a483ceSzhuna .section .debug_str_offsets.dwo,"e",@progbits 107*53a483ceSzhuna .long 20 108*53a483ceSzhuna .short 5 109*53a483ceSzhuna .short 0 110*53a483ceSzhuna .section .debug_str.dwo,"eMS",@progbits,1 111*53a483ceSzhuna.Linfo_string0: 112*53a483ceSzhuna .asciz "hello" # string offset=0 113*53a483ceSzhuna.Linfo_string1: 114*53a483ceSzhuna .asciz "clang version 11.1.0 (https://github.com/llvm/llvm-project.git 1a0dc1e010bf5c8034bd4a53340fc0dc3e90549a)" # string offset=6 115*53a483ceSzhuna.Linfo_string2: 116*53a483ceSzhuna .asciz "hello.c" # string offset=111 117*53a483ceSzhuna.Linfo_string3: 118*53a483ceSzhuna .asciz "hello.dwo" # string offset=119 119*53a483ceSzhuna .section .debug_str_offsets.dwo,"e",@progbits 120*53a483ceSzhuna .long 0 121*53a483ceSzhuna .long 6 122*53a483ceSzhuna .long 111 123*53a483ceSzhuna .long 119 124*53a483ceSzhuna .section .debug_info.dwo,"e",@progbits 125*53a483ceSzhuna .long .Ldebug_info_dwo_end0-.Ldebug_info_dwo_start0 # Length of Unit 126*53a483ceSzhuna.Ldebug_info_dwo_start0: 127*53a483ceSzhuna .short 5 # DWARF version number 128*53a483ceSzhuna .byte 5 # DWARF Unit Type 129*53a483ceSzhuna .byte 8 # Address Size (in bytes) 130*53a483ceSzhuna .long 0 # Offset Into Abbrev. Section 131*53a483ceSzhuna .quad -94954012350180462 132*53a483ceSzhuna .byte 1 # Abbrev [1] 0x14:0x12 DW_TAG_compile_unit 133*53a483ceSzhuna .byte 1 # DW_AT_producer 134*53a483ceSzhuna .short 12 # DW_AT_language 135*53a483ceSzhuna .byte 2 # DW_AT_name 136*53a483ceSzhuna .byte 3 # DW_AT_dwo_name 137*53a483ceSzhuna .byte 2 # Abbrev [2] 0x1a:0xb DW_TAG_subprogram 138*53a483ceSzhuna .byte 0 # DW_AT_low_pc 139*53a483ceSzhuna .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc 140*53a483ceSzhuna .byte 1 # DW_AT_frame_base 141*53a483ceSzhuna .byte 86 142*53a483ceSzhuna .byte 0 # DW_AT_name 143*53a483ceSzhuna .byte 0 # DW_AT_decl_file 144*53a483ceSzhuna .byte 3 # DW_AT_decl_line 145*53a483ceSzhuna # DW_AT_external 146*53a483ceSzhuna .byte 0 # End Of Children Mark 147*53a483ceSzhuna .fill 4294967233 148*53a483ceSzhuna.Ldebug_info_dwo_end0: 149*53a483ceSzhuna .section .debug_abbrev.dwo,"e",@progbits 150*53a483ceSzhuna .byte 1 # Abbreviation Code 151*53a483ceSzhuna .byte 17 # DW_TAG_compile_unit 152*53a483ceSzhuna .byte 1 # DW_CHILDREN_yes 153*53a483ceSzhuna .byte 37 # DW_AT_producer 154*53a483ceSzhuna .byte 37 # DW_FORM_strx1 155*53a483ceSzhuna .byte 19 # DW_AT_language 156*53a483ceSzhuna .byte 5 # DW_FORM_data2 157*53a483ceSzhuna .byte 3 # DW_AT_name 158*53a483ceSzhuna .byte 37 # DW_FORM_strx1 159*53a483ceSzhuna .byte 118 # DW_AT_dwo_name 160*53a483ceSzhuna .byte 37 # DW_FORM_strx1 161*53a483ceSzhuna .byte 0 # EOM(1) 162*53a483ceSzhuna .byte 0 # EOM(2) 163*53a483ceSzhuna .byte 2 # Abbreviation Code 164*53a483ceSzhuna .byte 46 # DW_TAG_subprogram 165*53a483ceSzhuna .byte 0 # DW_CHILDREN_no 166*53a483ceSzhuna .byte 17 # DW_AT_low_pc 167*53a483ceSzhuna .byte 27 # DW_FORM_addrx 168*53a483ceSzhuna .byte 18 # DW_AT_high_pc 169*53a483ceSzhuna .byte 6 # DW_FORM_data4 170*53a483ceSzhuna .byte 64 # DW_AT_frame_base 171*53a483ceSzhuna .byte 24 # DW_FORM_exprloc 172*53a483ceSzhuna .byte 3 # DW_AT_name 173*53a483ceSzhuna .byte 37 # DW_FORM_strx1 174*53a483ceSzhuna .byte 58 # DW_AT_decl_file 175*53a483ceSzhuna .byte 11 # DW_FORM_data1 176*53a483ceSzhuna .byte 59 # DW_AT_decl_line 177*53a483ceSzhuna .byte 11 # DW_FORM_data1 178*53a483ceSzhuna .byte 63 # DW_AT_external 179*53a483ceSzhuna .byte 25 # DW_FORM_flag_present 180*53a483ceSzhuna .byte 0 # EOM(1) 181*53a483ceSzhuna .byte 0 # EOM(2) 182*53a483ceSzhuna .byte 0 # EOM(3) 183*53a483ceSzhuna .section .debug_addr,"",@progbits 184*53a483ceSzhuna .long .Ldebug_addr_end0-.Ldebug_addr_start0 # Length of contribution 185*53a483ceSzhuna.Ldebug_addr_start0: 186*53a483ceSzhuna .short 5 # DWARF version number 187*53a483ceSzhuna .byte 8 # Address size 188*53a483ceSzhuna .byte 0 # Segment selector size 189*53a483ceSzhuna.Laddr_table_base0: 190*53a483ceSzhuna .quad .Lfunc_begin0 191*53a483ceSzhuna.Ldebug_addr_end0: 192*53a483ceSzhuna .section .debug_gnu_pubnames,"",@progbits 193*53a483ceSzhuna .long .LpubNames_end0-.LpubNames_begin0 # Length of Public Names Info 194*53a483ceSzhuna.LpubNames_begin0: 195*53a483ceSzhuna .short 2 # DWARF Version 196*53a483ceSzhuna .long .Lcu_begin0 # Offset of Compilation Unit Info 197*53a483ceSzhuna .long 40 # Compilation Unit Length 198*53a483ceSzhuna .long 26 # DIE offset 199*53a483ceSzhuna .byte 48 # Attributes: FUNCTION, EXTERNAL 200*53a483ceSzhuna .asciz "hello" # External Name 201*53a483ceSzhuna .long 0 # End Mark 202*53a483ceSzhuna.LpubNames_end0: 203*53a483ceSzhuna .section .debug_gnu_pubtypes,"",@progbits 204*53a483ceSzhuna .long .LpubTypes_end0-.LpubTypes_begin0 # Length of Public Types Info 205*53a483ceSzhuna.LpubTypes_begin0: 206*53a483ceSzhuna .short 2 # DWARF Version 207*53a483ceSzhuna .long .Lcu_begin0 # Offset of Compilation Unit Info 208*53a483ceSzhuna .long 40 # Compilation Unit Length 209*53a483ceSzhuna .long 0 # End Mark 210*53a483ceSzhuna.LpubTypes_end0: 211*53a483ceSzhuna .ident "clang version 11.1.0 (https://github.com/llvm/llvm-project.git 1a0dc1e010bf5c8034bd4a53340fc0dc3e90549a)" 212*53a483ceSzhuna .section ".note.GNU-stack","",@progbits 213*53a483ceSzhuna .addrsig 214*53a483ceSzhuna .addrsig_sym printf 215*53a483ceSzhuna .section .debug_line,"",@progbits 216*53a483ceSzhuna.Lline_table_start0: 217