test/DebugInfo/symbolize-shared-abbrev.s

   1 # Show that multiple CUs can have a single common .debug_abbrev table. This can
   2 # occur due to e.g. LTO.
   3
   4 # REQUIRES: x86-registered-target
   5
   6 # RUN: llvm-mc --filetype=obj --triple=x86_64-pc-linux %s -o %t.o
   7 # RUN: llvm-symbolizer --obj=%t.o 0 16 --functions=short | FileCheck %s
   8
   9 # CHECK:      foo
  10 # CHECK-NEXT: foo.c:1:0
  11
  12 # CHECK:      bar
  13 # CHECK-NEXT: bar.c:2:0
  14
  15 .global foo
  16 .type foo,@function
  17 foo:
  18 .Lfunc_begin0:
  19     .file   1 "." "foo.c"
  20     .loc    1 1 0
  21     ret
  22 .Lfunc_end0:
  23
  24 .global bar
  25 .p2align 4, 0x90
  26 .type bar,@function
  27 bar:
  28 .Lfunc_begin1:
  29     .file   2 "." "bar.c"
  30     .loc    2 2 0
  31     ret
  32 .Lfunc_end1:
  33
  34     .section    .debug_str,"MS",@progbits,1
  35 .Linfo_string1:
  36     .asciz  "foo.c"
  37 .Linfo_string2:
  38     .asciz  "."
  39 .Linfo_string3:
  40     .asciz  "foo"
  41 .Linfo_string4:
  42     .asciz  "bar.c"
  43 .Linfo_string5:
  44     .asciz  "bar"
  45
  46     # Regular .debug_abbrev section with CU and subprogram, but duplicated, with second
  47     # half reordered slightly, to show that the correct abbrev is being referenced.
  48     .section    .debug_abbrev,"",@progbits
  49     .byte   1                       # Abbreviation Code
  50     .byte   17                      # DW_TAG_compile_unit
  51     .byte   1                       # DW_CHILDREN_yes
  52     .byte   3                       # DW_AT_name
  53     .byte   14                      # DW_FORM_strp
  54     .byte   16                      # DW_AT_stmt_list
  55     .byte   23                      # DW_FORM_sec_offset
  56     .byte   27                      # DW_AT_comp_dir
  57     .byte   14                      # DW_FORM_strp
  58     .byte   17                      # DW_AT_low_pc
  59     .byte   1                       # DW_FORM_addr
  60     .byte   18                      # DW_AT_high_pc
  61     .byte   6                       # DW_FORM_data4
  62     .byte   0                       # EOM(1)
  63     .byte   0                       # EOM(2)
  64     .byte   2                       # Abbreviation Code
  65     .byte   46                      # DW_TAG_subprogram
  66     .byte   0                       # DW_CHILDREN_no
  67     .byte   17                      # DW_AT_low_pc
  68     .byte   1                       # DW_FORM_addr
  69     .byte   18                      # DW_AT_high_pc
  70     .byte   6                       # DW_FORM_data4
  71     .byte   3                       # DW_AT_name
  72     .byte   14                      # DW_FORM_strp
  73     .byte   58                      # DW_AT_decl_file
  74     .byte   11                      # DW_FORM_data1
  75     .byte   59                      # DW_AT_decl_line
  76     .byte   11                      # DW_FORM_data1
  77     .byte   63                      # DW_AT_external
  78     .byte   25                      # DW_FORM_flag_present
  79     .byte   0                       # EOM(1)
  80     .byte   0                       # EOM(2)
  81     # Second-half starts here.
  82     .byte   3                       # Abbreviation Code
  83     .byte   17                      # DW_TAG_compile_unit
  84     .byte   1                       # DW_CHILDREN_yes
  85     .byte   16                      # DW_AT_stmt_list
  86     .byte   23                      # DW_FORM_sec_offset
  87     .byte   27                      # DW_AT_comp_dir
  88     .byte   14                      # DW_FORM_strp
  89     .byte   17                      # DW_AT_low_pc
  90     .byte   1                       # DW_FORM_addr
  91     .byte   18                      # DW_AT_high_pc
  92     .byte   6                       # DW_FORM_data4
  93     .byte   3                       # DW_AT_name
  94     .byte   14                      # DW_FORM_strp
  95     .byte   0                       # EOM(1)
  96     .byte   0                       # EOM(2)
  97     .byte   4                       # Abbreviation Code
  98     .byte   46                      # DW_TAG_subprogram
  99     .byte   0                       # DW_CHILDREN_no
 100     .byte   17                      # DW_AT_low_pc
 101     .byte   1                       # DW_FORM_addr
 102     .byte   18                      # DW_AT_high_pc
 103     .byte   6                       # DW_FORM_data4
 104     .byte   58                      # DW_AT_decl_file
 105     .byte   11                      # DW_FORM_data1
 106     .byte   59                      # DW_AT_decl_line
 107     .byte   11                      # DW_FORM_data1
 108     .byte   63                      # DW_AT_external
 109     .byte   25                      # DW_FORM_flag_present
 110     .byte   3                       # DW_AT_name
 111     .byte   14                      # DW_FORM_strp
 112     .byte   0                       # EOM(1)
 113     .byte   0                       # EOM(2)
 114     .byte   0                       # EOM(3)
 115
 116     .section    .debug_info,"",@progbits
 117     # First CU table.
 118     .long   .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
 119 .Ldebug_info_start0:
 120     .short  4                       # DWARF version number
 121     .long   .debug_abbrev           # Offset Into Abbrev. Section
 122     .byte   8                       # Address Size (in bytes)
 123     .byte   1                       # Abbrev [1] 0xb:0x35 DW_TAG_compile_unit
 124     .long   .Linfo_string1          # DW_AT_name
 125     .long   .Lline_table_start0     # DW_AT_stmt_list
 126     .long   .Linfo_string2          # DW_AT_comp_dir
 127     .quad   .Lfunc_begin0           # DW_AT_low_pc
 128     .long   .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
 129     .byte   2                       # Abbrev [2] 0x2a:0x15 DW_TAG_subprogram
 130     .quad   .Lfunc_begin0           # DW_AT_low_pc
 131     .long   .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
 132     .long   .Linfo_string3          # DW_AT_name
 133     .byte   1                       # DW_AT_decl_file
 134     .byte   1                       # DW_AT_decl_line
 135                                         # DW_AT_external
 136     .byte   0                       # End Of Children Mark
 137 .Ldebug_info_end0:
 138
 139     # Second CU table.
 140     .long   .Ldebug_info_end1-.Ldebug_info_start1 # Length of Unit
 141 .Ldebug_info_start1:
 142     .short  4                       # DWARF version number
 143     .long   .debug_abbrev           # Offset Into Abbrev. Section
 144     .byte   8                       # Address Size (in bytes)
 145     .byte   3                       # Abbrev [1] 0xb:0x35 DW_TAG_compile_unit
 146     .long   .Lline_table_start0     # DW_AT_stmt_list
 147     .long   .Linfo_string2          # DW_AT_comp_dir
 148     .quad   .Lfunc_begin1           # DW_AT_low_pc
 149     .long   .Lfunc_end1-.Lfunc_begin1 # DW_AT_high_pc
 150     .long   .Linfo_string4          # DW_AT_name
 151     .byte   4                       # Abbrev [2] 0x2a:0x15 DW_TAG_subprogram
 152     .quad   .Lfunc_begin1           # DW_AT_low_pc
 153     .long   .Lfunc_end1-.Lfunc_begin1 # DW_AT_high_pc
 154     .byte   1                       # DW_AT_decl_file
 155     .byte   1                       # DW_AT_decl_line
 156                                         # DW_AT_external
 157     .long   .Linfo_string5          # DW_AT_name
 158     .byte   0                       # End Of Children Mark
 159 .Ldebug_info_end1:
 160
 161     .section    .debug_line,"",@progbits
 162 .Lline_table_start0: