llvm/test/tools/llvm-symbolizer/skip-line-zero.s

   1 ##  Test the "--skip-line-zero" option.
   2 ##
   3 ##  This test uses handcrafted assembly to produce the following line table:
   4 ##  Address            Line   Column File   ISA Discriminator OpIndex Flags
   5 ##  ------------------ ------ ------ ------ --- ------------- ------- -------------
   6 ##  0x0000000000001710      1      0      1   0             0       0
   7 ##  0x0000000000001714      0      0      1   0             0       0
   8 ##  0x0000000000001719      1      2      1   0             0       0
   9 ##  0x000000000000171b      1      2      1   0             0       0  end_sequence
  10 ##  0x00000000000016c0      0      0      1   0             0       0
  11 ##  0x00000000000016cf      2      0      1   0             0       0
  12 ##  0x00000000000016d4      0      0      1   0             0       0
  13 ##  0x00000000000016d9      0      0      1   0             0       0
  14 ##  0x00000000000016df      0      0      1   0             0       0  end_sequence
  15
  16 # REQUIRES: x86-registered-target
  17
  18 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
  19
  20 ## Check that without '--skip-line-zero', line zero is displayed for a line-table entry which has no source correspondence.
  21 # RUN: llvm-symbolizer --obj=%t.o -f=none 0x16d4 | FileCheck --strict-whitespace --match-full-lines --check-prefix=DISABLE %s
  22
  23 # DISABLE:main.c:0:0
  24
  25 ## Check that the '--skip-line-zero' does not cross sequence boundaries.
  26 ## If it fails to find in the current sequence then line zero is returned for the queried address.
  27 # RUN: llvm-symbolizer --obj=%t.o -f=none --skip-line-zero 0x16c0 | FileCheck --strict-whitespace --match-full-lines --check-prefix=FAIL-ACROSS-SEQ %s
  28
  29 # FAIL-ACROSS-SEQ:main.c:0:0
  30
  31 ## Check that with '--skip-line-zero', the last non-zero line in the current sequence is displayed.
  32 # RUN: llvm-symbolizer --obj=%t.o -f=none --skip-line-zero 0x1717 | FileCheck --strict-whitespace --match-full-lines --check-prefix=WITHIN-SEQ %s
  33
  34 # WITHIN-SEQ:main.c:1:0 (approximate)
  35
  36 ## Check that with '--skip-line-zero', multiple line zero rows are skipped within the current sequence.
  37 # RUN: llvm-symbolizer --obj=%t.o -f=none --skip-line-zero 0x16d9 | FileCheck --strict-whitespace --match-full-lines --check-prefix=MULTIPLE-ROWS %s
  38
  39 # MULTIPLE-ROWS:main.c:2:0 (approximate)
  40
  41 ## Check that '--skip-line-zero' only affects the line zero addresses when more than one address is specified.
  42 # RUN: llvm-symbolizer --obj=%t.o -f=none --skip-line-zero 0x16d4 0x1719 | FileCheck --strict-whitespace --match-full-lines --check-prefixes=ENABLE,NO-APPROX %s
  43
  44 # ENABLE:main.c:2:0 (approximate)
  45 # NO-APPROX:main.c:1:2
  46
  47 ## Check to ensure that '--skip-line-zero' with '--verbose' enabled displays approximate flag in verbose ouptut.
  48 # RUN: llvm-symbolizer --obj=%t.o -f=none --skip-line-zero --verbose 0x1717 | FileCheck --strict-whitespace --match-full-lines --check-prefix=VERBOSE %s
  49
  50 # VERBOSE:  Filename: main.c
  51 # VERBOSE-NEXT:  Line: 1
  52 # VERBOSE-NEXT:  Column: 0
  53 # VERBOSE-NEXT:  Approximate: true
  54
  55 ## Check to ensure that '--skip-line-zero' with '--output-style=JSON' displays approximate flag in JSON output.
  56 # RUN: llvm-symbolizer --obj=%t.o -f=none --skip-line-zero --output-style=JSON 0x1717 | FileCheck --strict-whitespace --match-full-lines --check-prefix=JSON %s
  57
  58 # JSON:[{"Address":"0x1717","ModuleName":"{{.*}}{{[/|\]+}}skip-line-zero.s{{.*}}","Symbol":[{"Approximate":true,"Column":0,"Discriminator":0,"FileName":"main.c","FunctionName":"","Line":1,"StartAddress":"","StartFileName":"","StartLine":0}]}]
  59
  60 ## main.c
  61 ## __attribute__((section("def"))) int foo() { return 1234; }
  62 ## int main(void) { return foo()+5678; }
  63 ##
  64 ## Generated using
  65 ## clang -S -gdwarf-4 --target=x86_64-pc-linux -fdebug-prefix-map=/tmp="" main.c -o main.s
  66 ##
  67 ## Sections belonging to code segment(.text) are removed. Sections related to debug information(other than .debug_line) are modified. Section .debug_line is handwritten. Section .debug_str is deleted.
  68
  69         .section        .debug_abbrev,"",@progbits
  70         .byte   1                               # Abbreviation Code
  71         .byte   17                              # DW_TAG_compile_unit
  72         .byte   0                               # DW_CHILDREN_no
  73         .byte   16                              # DW_AT_stmt_list
  74         .byte   23                              # DW_FORM_sec_offset
  75         .byte   17                              # DW_AT_low_pc
  76         .byte   1                               # DW_FORM_addr
  77         .byte   85                              # DW_AT_ranges
  78         .byte   23                              # DW_FORM_sec_offset
  79         .byte   0                               # EOM(1)
  80         .byte   0                               # EOM(2)
  81         .byte   0                               # EOM(3)
  82         .section        .debug_info,"",@progbits
  83 .Lcu_begin0:
  84         .long   .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
  85 .Ldebug_info_start0:
  86         .short  4                               # DWARF version number
  87         .long   .debug_abbrev                   # Offset Into Abbrev. Section
  88         .byte   8                               # Address Size (in bytes)
  89         .byte   1                               # Abbrev [1] 0xb:0x55 DW_TAG_compile_unit
  90         .long   .Lline_table_start0             # DW_AT_stmt_list
  91         .quad   0                               # DW_AT_low_pc
  92         .long   .Ldebug_ranges0                 # DW_AT_ranges
  93         .byte   0                               # End Of Children Mark
  94 .Ldebug_info_end0:
  95         .section        .debug_ranges,"",@progbits
  96 .Ldebug_ranges0:
  97         .quad   0x1710                          #.Lfunc_begin0
  98         .quad   0x171b                          #.Lfunc_end0
  99         .quad   0x16c0                          #.Lfunc_begin1
 100         .quad   0x16df                          #.Lfunc_end1
 101         .quad   0
 102         .quad   0
 103         .section        .debug_line,"",@progbits
 104 .Lline_table_start0:
 105         .long   .Lunit_end - .Lunit_start     # unit length
 106 .Lunit_start:
 107         .short  4   # version
 108         .long   .Lprologue_end - .Lprologue_start # header length
 109 .Lprologue_start:
 110         .byte   1                                      # minimum_instruction_length
 111         .byte   1                                      # maximum_operations_per_instruction
 112         .byte   0                                      # default_is_stmt
 113         .byte   -5                                     # line_base
 114         .byte   14                                     # line_range
 115         .byte   13                                     # opcode_base
 116         .byte   0, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1     # arguments in standard opcodes
 117         .byte   0                                      # end of include directories
 118         .asciz  "main.c"                             # filename
 119         .byte   0                                      # directory index
 120         .byte   0                                      # modification time
 121         .byte   0                                      # length of file (unavailable)
 122         .byte   0                                      # end of filenames
 123 .Lprologue_end:
 124         .byte   0x00, 9, 2                             # DW_LNE_set_address
 125         .quad   0x1710                                 # Address Value
 126         .byte   0x01                                   # DW_LNS_copy
 127         .byte   0x49                                   # (address += 4,  line += -1,  op-index += 0)
 128         .byte   0x05, 2                                # DW_LNS_set_column (2)
 129         .byte   0x59                                   # (address += 5,  line += 1,  op-index += 0)
 130         .byte   0x02                                   # DW_LNS_advance_pc
 131         .uleb128 0x02                                # (addr += 2, op-index += 0)
 132         .byte   0x00, 1, 1                             # DW_LNE_end_sequence
 133         .byte   0x00, 9, 2                             # DW_LNE_set_address
 134         .quad   0x16c0                                 # Address Value
 135         .byte   0x11                                   # (address += 0,  line += -1,  op-index += 0)
 136         .byte   0xe6                                   # (address += 15,  line += 2,  op-index += 0)
 137         .byte   0x56                                   # (address += 5,  line += -2,  op-index += 0)
 138         .byte   0x58                                   # (address += 5,  line += 0,  op-index += 0)
 139         .byte   0x02                                   # DW_LNS_advance_pc
 140         .uleb128 0x06                                # (addr += 6, op-index += 0)
 141         .byte   0x00, 1, 1                             # DW_LNE_end_sequence
 142 .Lunit_end:
 143