llvm/test/tools/llvm-dwp/X86/unknown-section-id.s

   1 ## The test checks that llvm-dwp avoids an out of bound access when there is
   2 ## an unknown section identifier in an index section. Without the fix, the test
   3 ## failed when LLVM is built with UBSan.
   4 ## Note that additional sections (.debug_abbrev.dwo, .debug_info.dwo, and
   5 ## .debug_types.dwo) are required to reach the test points in the code.
   6
   7 # RUN: llvm-mc -triple x86_64-unknown-linux-gnu %s -filetype=obj -o %t.dwp
   8 # RUN: llvm-dwp %t.dwp -o - | \
   9 # RUN:   llvm-dwarfdump -debug-cu-index -debug-tu-index - | \
  10 # RUN:   FileCheck %s
  11
  12 ## Check that all known sections are preserved and no data for unknown section
  13 ## identifiers is copied.
  14
  15 # CHECK:      .debug_cu_index contents:
  16 # CHECK-NEXT: version = 2, units = 1, slots = 2
  17 # CHECK:      Index Signature INFO ABBREV
  18 # CHECK-NOT:  Unknown
  19 # CHECK:      -----
  20 # CHECK-NEXT: 1 0x1100002222222222 [0x0000000000000000, 0x0000000000000014) [0x00000000, 0x00000009)
  21 # CHECK-NOT:  [
  22
  23 # CHECK:      .debug_tu_index contents:
  24 # CHECK-NEXT: version = 2, units = 1, slots = 2
  25 # CHECK:      Index Signature TYPES ABBREV
  26 # CHECK-NOT:  Unknown
  27 # CHECK:      -----
  28 # CHECK-NEXT: 2 0x1100003333333333 [0x0000000000000000, 0x0000000000000019) [0x00000009, 0x00000014)
  29 # CHECK-NOT:  [
  30
  31 .section .debug_abbrev.dwo, "e", @progbits
  32 .LCUAbbrevBegin:
  33     .uleb128 1                              # Abbreviation Code
  34     .uleb128 0x11                           # DW_TAG_compile_unit
  35     .byte 0                                 # DW_CHILDREN_no
  36     .uleb128 0x2131                         # DW_AT_GNU_dwo_id
  37     .uleb128 7                              # DW_FORM_data8
  38     .byte 0                                 # EOM(1)
  39     .byte 0                                 # EOM(2)
  40     .byte 0                                 # EOM(3)
  41 .LCUAbbrevEnd:
  42
  43 .LTUAbbrevBegin:
  44     .uleb128 1                              # Abbreviation Code
  45     .uleb128 0x41                           # DW_TAG_type_unit
  46     .byte 1                                 # DW_CHILDREN_yes
  47     .byte 0                                 # EOM(1)
  48     .byte 0                                 # EOM(2)
  49     .uleb128 2                              # Abbreviation Code
  50     .uleb128 0x13                           # DW_TAG_structure_type
  51     .byte 0                                 # DW_CHILDREN_no
  52     .byte 0                                 # EOM(1)
  53     .byte 0                                 # EOM(2)
  54     .byte 0                                 # EOM(3)
  55 .LTUAbbrevEnd:
  56
  57     .section .debug_info.dwo, "e", @progbits
  58 .LCUBegin:
  59     .long .LCUEnd-.LCUVersion               # Length of Unit
  60 .LCUVersion:
  61     .short 4                                # Version
  62     .long 0                                 # Abbrev offset
  63     .byte 8                                 # Address size
  64     .uleb128 1                              # Abbrev [1] DW_TAG_compile_unit
  65     .quad 0x1100002222222222                # DW_AT_GNU_dwo_id
  66 .LCUEnd:
  67
  68     .section .debug_types.dwo, "e", @progbits
  69 .LTUBegin:
  70     .long .LTUEnd-.LTUVersion               # Length of Unit
  71 .LTUVersion:
  72     .short 4                                # Version
  73     .long 0                                 # Abbrev offset
  74     .byte 8                                 # Address size
  75     .quad 0x1100003333333333                # Type signature
  76     .long .LTUType-.LTUBegin                # Type offset
  77     .uleb128 1                              # Abbrev [1] DW_TAG_type_unit
  78 .LTUType:
  79     .uleb128 2                              # Abbrev [2] DW_TAG_structure_type
  80 .LTUEnd:
  81
  82     .section .debug_cu_index, "", @progbits
  83 ## Header:
  84     .long 2                                 # Version
  85     .long 4                                 # Section count
  86     .long 1                                 # Unit count
  87     .long 2                                 # Slot count
  88 ## Hash Table of Signatures:
  89     .quad 0x1100002222222222
  90     .quad 0
  91 ## Parallel Table of Indexes:
  92     .long 1
  93     .long 0
  94 ## Table of Section Offsets:
  95 ## Row 0:
  96     .long 1                                 # DW_SECT_INFO
  97     .long 3                                 # DW_SECT_ABBREV
  98     .long 0                                 # Invalid ID, less than DW_SECT_INFO
  99     .long 9                                 # Invalid ID, greater than DW_SECT_MACRO
 100 ## Row 1:
 101     .long 0                                 # Offset in .debug_info.dwo
 102     .long 0                                 # Offset in .debug_abbrev.dwo
 103     .long 0
 104     .long 0
 105 ## Table of Section Sizes:
 106     .long .LCUEnd-.LCUBegin                 # Size in .debug_info.dwo
 107     .long .LCUAbbrevEnd-.LCUAbbrevBegin     # Size in .debug_abbrev.dwo
 108     .long 1
 109     .long 1
 110
 111     .section .debug_tu_index, "", @progbits
 112 ## Header:
 113     .long 2                                 # Version
 114     .long 4                                 # Section count
 115     .long 1                                 # Unit count
 116     .long 2                                 # Slot count
 117 ## Hash Table of Signatures:
 118     .quad 0
 119     .quad 0x1100003333333333
 120 ## Parallel Table of Indexes:
 121     .long 0
 122     .long 1
 123 ## Table of Section Offsets:
 124 ## Row 0:
 125     .long 2                                 # DW_SECT_TYPES
 126     .long 3                                 # DW_SECT_ABBREV
 127     .long 0                                 # Invalid ID, less than DW_SECT_INFO
 128     .long 9                                 # Invalid ID, greater than DW_SECT_MACRO
 129 ## Row 1:
 130     .long 0                                 # Offset in .debug_types.dwo
 131     .long .LTUAbbrevBegin-.debug_abbrev.dwo # Offset in .debug_abbrev.dwo
 132     .long 0
 133     .long 0
 134 ## Table of Section Sizes:
 135     .long .LTUEnd-.LTUBegin                 # Size in .debug_types.dwo
 136     .long .LTUAbbrevEnd-.LTUAbbrevBegin     # Size in .debug_abbrev.dwo
 137     .long 1
 138     .long 1