Contents of the .debug_info section:
Compilation Unit @ offset 0x0:
Length: 0x207 (32-bit)
Version: 2
Abbrev Offset: 0x0
Pointer Size: 4
<0><b>: Abbrev Number: 1 (DW_TAG_compile_unit)
<c> DW_AT_producer : (indirect string, offset: 0x138): GNU C 4.8.4 -m32 -mtune=generic -march=i686 -gdwarf-2 -fstack-protector
<10> DW_AT_language : 1 (ANSI C)
<11> DW_AT_name : (indirect string, offset: 0xf1): mpers-m32/struct_btrfs_ioctl_send_args.c
<15> DW_AT_comp_dir : (indirect string, offset: 0x1e9): /usr/local/google/home/enh/Downloads/strace-4.16
<19> DW_AT_stmt_list : 0x0
<1><1d>: Abbrev Number: 2 (DW_TAG_base_type)
<1e> DW_AT_byte_size : 1
<1f> DW_AT_encoding : 6 (signed char)
<20> DW_AT_name : (indirect string, offset: 0x2aa): signed char
<1><24>: Abbrev Number: 2 (DW_TAG_base_type)
<25> DW_AT_byte_size : 2
<26> DW_AT_encoding : 5 (signed)
<27> DW_AT_name : (indirect string, offset: 0x62): short int
<1><2b>: Abbrev Number: 3 (DW_TAG_base_type)
<2c> DW_AT_byte_size : 4
<2d> DW_AT_encoding : 5 (signed)
<2e> DW_AT_name : int
<1><32>: Abbrev Number: 2 (DW_TAG_base_type)
<33> DW_AT_byte_size : 8
<34> DW_AT_encoding : 5 (signed)
<35> DW_AT_name : (indirect string, offset: 0xc3): long long int
<1><39>: Abbrev Number: 2 (DW_TAG_base_type)
<3a> DW_AT_byte_size : 1
<3b> DW_AT_encoding : 8 (unsigned char)
<3c> DW_AT_name : (indirect string, offset: 0xd1): unsigned char
<1><40>: Abbrev Number: 2 (DW_TAG_base_type)
<41> DW_AT_byte_size : 2
<42> DW_AT_encoding : 7 (unsigned)
<43> DW_AT_name : (indirect string, offset: 0x4f): short unsigned int
<1><47>: Abbrev Number: 2 (DW_TAG_base_type)
<48> DW_AT_byte_size : 4
<49> DW_AT_encoding : 7 (unsigned)
<4a> DW_AT_name : (indirect string, offset: 0x19f): unsigned int
<1><4e>: Abbrev Number: 2 (DW_TAG_base_type)
<4f> DW_AT_byte_size : 8
<50> DW_AT_encoding : 7 (unsigned)
<51> DW_AT_name : (indirect string, offset: 0x2bf): long long unsigned int
<1><55>: Abbrev Number: 2 (DW_TAG_base_type)
<56> DW_AT_byte_size : 4
<57> DW_AT_encoding : 5 (signed)
<58> DW_AT_name : (indirect string, offset: 0x2a1): long int
<1><5c>: Abbrev Number: 2 (DW_TAG_base_type)
<5d> DW_AT_byte_size : 4
<5e> DW_AT_encoding : 7 (unsigned)
<5f> DW_AT_name : (indirect string, offset: 0xdf): long unsigned int
<1><63>: Abbrev Number: 2 (DW_TAG_base_type)
<64> DW_AT_byte_size : 4
<65> DW_AT_encoding : 7 (unsigned)
<66> DW_AT_name : (indirect string, offset: 0x22a): sizetype
<1><6a>: Abbrev Number: 2 (DW_TAG_base_type)
<6b> DW_AT_byte_size : 1
<6c> DW_AT_encoding : 6 (signed char)
<6d> DW_AT_name : (indirect string, offset: 0x1c0): char
<1><71>: Abbrev Number: 4 (DW_TAG_pointer_type)
<72> DW_AT_byte_size : 4
<73> DW_AT_type : <0x77>
<1><77>: Abbrev Number: 5 (DW_TAG_const_type)
<78> DW_AT_type : <0x6a>
<1><7c>: Abbrev Number: 6 (DW_TAG_structure_type)
<7d> DW_AT_name : (indirect string, offset: 0x11a): sysent
<81> DW_AT_byte_size : 20
<82> DW_AT_decl_file : 1
<83> DW_AT_decl_line : 4
<84> DW_AT_sibling : <0xcf>
<2><88>: Abbrev Number: 7 (DW_TAG_member)
<89> DW_AT_name : (indirect string, offset: 0x132): nargs
<8d> DW_AT_decl_file : 1
<8e> DW_AT_decl_line : 5
<8f> DW_AT_type : <0x47>
<93> DW_AT_data_member_location: 2 byte block: 23 0 (DW_OP_plus_uconst: 0)
<2><96>: Abbrev Number: 7 (DW_TAG_member)
<97> DW_AT_name : (indirect string, offset: 0xb9): sys_flags
<9b> DW_AT_decl_file : 1
<9c> DW_AT_decl_line : 6
<9d> DW_AT_type : <0x2b>
<a1> DW_AT_data_member_location: 2 byte block: 23 4 (DW_OP_plus_uconst: 4)
<2><a4>: Abbrev Number: 8 (DW_TAG_member)
<a5> DW_AT_name : sen
<a9> DW_AT_decl_file : 1
<aa> DW_AT_decl_line : 7
<ab> DW_AT_type : <0x2b>
<af> DW_AT_data_member_location: 2 byte block: 23 8 (DW_OP_plus_uconst: 8)
<2><b2>: Abbrev Number: 7 (DW_TAG_member)
<b3> DW_AT_name : (indirect string, offset: 0x2b6): sys_func
<b7> DW_AT_decl_file : 1
<b8> DW_AT_decl_line : 8
<b9> DW_AT_type : <0xda>
<bd> DW_AT_data_member_location: 2 byte block: 23 c (DW_OP_plus_uconst: 12)
<2><c0>: Abbrev Number: 7 (DW_TAG_member)
<c1> DW_AT_name : (indirect string, offset: 0x6c): sys_name
<c5> DW_AT_decl_file : 1
<c6> DW_AT_decl_line : 9
<c7> DW_AT_type : <0x71>
<cb> DW_AT_data_member_location: 2 byte block: 23 10 (DW_OP_plus_uconst: 16)
<2><ce>: Abbrev Number: 0
<1><cf>: Abbrev Number: 9 (DW_TAG_subroutine_type)
<d0> DW_AT_type : <0x2b>
<d4> DW_AT_sibling : <0xda>
<2><d8>: Abbrev Number: 10 (DW_TAG_unspecified_parameters)
<2><d9>: Abbrev Number: 0
<1><da>: Abbrev Number: 4 (DW_TAG_pointer_type)
<db> DW_AT_byte_size : 4
<dc> DW_AT_type : <0xcf>
<1><e0>: Abbrev Number: 11 (DW_TAG_typedef)
<e1> DW_AT_name : (indirect string, offset: 0x1b2): struct_sysent
<e5> DW_AT_decl_file : 1
<e6> DW_AT_decl_line : 10
<e7> DW_AT_type : <0x7c>
<1><eb>: Abbrev Number: 4 (DW_TAG_pointer_type)
<ec> DW_AT_byte_size : 4
<ed> DW_AT_type : <0xf1>
<1><f1>: Abbrev Number: 5 (DW_TAG_const_type)
<f2> DW_AT_type : <0xe0>
<1><f6>: Abbrev Number: 2 (DW_TAG_base_type)
<f7> DW_AT_byte_size : 1
<f8> DW_AT_encoding : 2 (boolean)
<f9> DW_AT_name : (indirect string, offset: 0x26): _Bool
<1><fd>: Abbrev Number: 11 (DW_TAG_typedef)
<fe> DW_AT_name : (indirect string, offset: 0x2d6): __s64
<102> DW_AT_decl_file : 2
<103> DW_AT_decl_line : 29
<104> DW_AT_type : <0x32>
<1><108>: Abbrev Number: 11 (DW_TAG_typedef)
<109> DW_AT_name : (indirect string, offset: 0x224): __u64
<10d> DW_AT_decl_file : 2
<10e> DW_AT_decl_line : 30
<10f> DW_AT_type : <0x4e>
<1><113>: Abbrev Number: 12 (DW_TAG_array_type)
<114> DW_AT_type : <0x108>
<118> DW_AT_sibling : <0x123>
<2><11c>: Abbrev Number: 13 (DW_TAG_subrange_type)
<11d> DW_AT_type : <0x63>
<121> DW_AT_upper_bound : 3
<2><122>: Abbrev Number: 0
<1><123>: Abbrev Number: 14 (DW_TAG_enumeration_type)
<124> DW_AT_name : (indirect string, offset: 0x1c5): btrfs_dev_stat_values
<128> DW_AT_byte_size : 4
<129> DW_AT_decl_file : 3
<12a> DW_AT_decl_line : 369
<12c> DW_AT_sibling : <0x155>
<2><130>: Abbrev Number: 15 (DW_TAG_enumerator)
<131> DW_AT_name : (indirect string, offset: 0x2c): BTRFS_DEV_STAT_WRITE_ERRS
<135> DW_AT_const_value : 0
<2><136>: Abbrev Number: 15 (DW_TAG_enumerator)
<137> DW_AT_name : (indirect string, offset: 0x24d): BTRFS_DEV_STAT_READ_ERRS
<13b> DW_AT_const_value : 1
<2><13c>: Abbrev Number: 15 (DW_TAG_enumerator)
<13d> DW_AT_name : (indirect string, offset: 0x233): BTRFS_DEV_STAT_FLUSH_ERRS
<141> DW_AT_const_value : 2
<2><142>: Abbrev Number: 15 (DW_TAG_enumerator)
<143> DW_AT_name : (indirect string, offset: 0x180): BTRFS_DEV_STAT_CORRUPTION_ERRS
<147> DW_AT_const_value : 3
<2><148>: Abbrev Number: 15 (DW_TAG_enumerator)
<149> DW_AT_name : (indirect string, offset: 0x266): BTRFS_DEV_STAT_GENERATION_ERRS
<14d> DW_AT_const_value : 4
<2><14e>: Abbrev Number: 15 (DW_TAG_enumerator)
<14f> DW_AT_name : (indirect string, offset: 0xc): BTRFS_DEV_STAT_VALUES_MAX
<153> DW_AT_const_value : 5
<2><154>: Abbrev Number: 0
<1><155>: Abbrev Number: 16 (DW_TAG_structure_type)
<156> DW_AT_name : (indirect string, offset: 0x92): btrfs_ioctl_send_args
<15a> DW_AT_byte_size : 68
<15b> DW_AT_decl_file : 3
<15c> DW_AT_decl_line : 466
<15e> DW_AT_sibling : <0x1bd>
<2><162>: Abbrev Number: 17 (DW_TAG_member)
<163> DW_AT_name : (indirect string, offset: 0x299): send_fd
<167> DW_AT_decl_file : 3
<168> DW_AT_decl_line : 467
<16a> DW_AT_type : <0xfd>
<16e> DW_AT_data_member_location: 2 byte block: 23 0 (DW_OP_plus_uconst: 0)
<2><171>: Abbrev Number: 17 (DW_TAG_member)
<172> DW_AT_name : (indirect string, offset: 0x285): clone_sources_count
<176> DW_AT_decl_file : 3
<177> DW_AT_decl_line : 468
<179> DW_AT_type : <0x108>
<17d> DW_AT_data_member_location: 2 byte block: 23 8 (DW_OP_plus_uconst: 8)
<2><180>: Abbrev Number: 17 (DW_TAG_member)
<181> DW_AT_name : (indirect string, offset: 0x1db): clone_sources
<185> DW_AT_decl_file : 3
<186> DW_AT_decl_line : 469
<188> DW_AT_type : <0x1bd>
<18c> DW_AT_data_member_location: 2 byte block: 23 10 (DW_OP_plus_uconst: 16)
<2><18f>: Abbrev Number: 17 (DW_TAG_member)
<190> DW_AT_name : (indirect string, offset: 0x0): parent_root
<194> DW_AT_decl_file : 3
<195> DW_AT_decl_line : 470
<197> DW_AT_type : <0x108>
<19b> DW_AT_data_member_location: 2 byte block: 23 14 (DW_OP_plus_uconst: 20)
<2><19e>: Abbrev Number: 17 (DW_TAG_member)
<19f> DW_AT_name : (indirect string, offset: 0x1ac): flags
<1a3> DW_AT_decl_file : 3
<1a4> DW_AT_decl_line : 471
<1a6> DW_AT_type : <0x108>
<1aa> DW_AT_data_member_location: 2 byte block: 23 1c (DW_OP_plus_uconst: 28)
<2><1ad>: Abbrev Number: 17 (DW_TAG_member)
<1ae> DW_AT_name : (indirect string, offset: 0x46): reserved
<1b2> DW_AT_decl_file : 3
<1b3> DW_AT_decl_line : 472
<1b5> DW_AT_type : <0x113>
<1b9> DW_AT_data_member_location: 2 byte block: 23 24 (DW_OP_plus_uconst: 36)
<2><1bc>: Abbrev Number: 0
<1><1bd>: Abbrev Number: 4 (DW_TAG_pointer_type)
<1be> DW_AT_byte_size : 4
<1bf> DW_AT_type : <0x108>
<1><1c3>: Abbrev Number: 11 (DW_TAG_typedef)
<1c4> DW_AT_name : (indirect string, offset: 0x75): struct_btrfs_ioctl_send_args
<1c8> DW_AT_decl_file : 4
<1c9> DW_AT_decl_line : 38
<1ca> DW_AT_type : <0x155>
<1><1ce>: Abbrev Number: 18 (DW_TAG_variable)
<1cf> DW_AT_name : (indirect string, offset: 0x121): current_wordsize
<1d3> DW_AT_decl_file : 5
<1d4> DW_AT_decl_line : 757
<1d6> DW_AT_type : <0x47>
<1da> DW_AT_external : 1
<1db> DW_AT_declaration : 1
<1><1dc>: Abbrev Number: 18 (DW_TAG_variable)
<1dd> DW_AT_name : (indirect string, offset: 0x11a): sysent
<1e1> DW_AT_decl_file : 5
<1e2> DW_AT_decl_line : 892
<1e4> DW_AT_type : <0xeb>
<1e8> DW_AT_external : 1
<1e9> DW_AT_declaration : 1
<1><1ea>: Abbrev Number: 18 (DW_TAG_variable)
<1eb> DW_AT_name : (indirect string, offset: 0x21a): nsyscalls
<1ef> DW_AT_decl_file : 5
<1f0> DW_AT_decl_line : 903
<1f2> DW_AT_type : <0x47>
<1f6> DW_AT_external : 1
<1f7> DW_AT_declaration : 1
<1><1f8>: Abbrev Number: 19 (DW_TAG_variable)
<1f9> DW_AT_name : (indirect string, offset: 0xa8): mpers_target_var
<1fd> DW_AT_decl_file : 4
<1fe> DW_AT_decl_line : 46
<1ff> DW_AT_type : <0x1c3>
<203> DW_AT_external : 1
<204> DW_AT_location : 5 byte block: 3 20 0 0 0 (DW_OP_addr: 20)
<1><20a>: Abbrev Number: 0