lld/test/ELF/gdb-index-multiple-cu.s

   1 # REQUIRES: x86
   2 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
   3 # RUN: ld.lld --gdb-index %t.o -o %t 2>&1 | count 0
   4 # RUN: llvm-dwarfdump -gdb-index %t | FileCheck %s
   5
   6 # cuIndexAndAttrs of _start:
   7 #   attributes << 24 | cuIndex = 48 << 24 | 0 = 0x30000000
   8 # cuIndexAndAttrs of foo:
   9 #   attributes << 24 | cuIndex = 48 << 24 | 1 = 0x30000001
  10 # CHECK:      Symbol table
  11 # CHECK-DAG:      String name: _start, CU vector index: 0
  12 # CHECK-DAG:      String name: foo, CU vector index: 1
  13 # CHECK:      Constant pool
  14 # CHECK-NEXT:   0(0x0): 0x30000000
  15 # CHECK-NEXT:   1(0x8): 0x30000001
  16
  17 .globl _start, foo
  18 _start:
  19 foo:
  20
  21 .section .debug_abbrev,"",@progbits
  22         .byte   1              # Abbreviation Code
  23         .byte   17             # DW_TAG_compile_unit
  24         .byte   1              # DW_CHILDREN_yes
  25         .ascii  "\264B"        # DW_AT_GNU_pubnames
  26         .byte   25             # DW_FORM_flag_present
  27         .byte   0              # EOM(1)
  28         .byte   0              # EOM(2)
  29         .byte   2              # Abbreviation Code
  30         .byte   46             # DW_TAG_subprogram
  31         .byte   0              # DW_CHILDREN_no
  32         .byte   3              # DW_AT_name
  33         .byte   8              # DW_FORM_string
  34         .byte   0              # EOM(1)
  35         .byte   0              # EOM(2)
  36         .byte   0
  37
  38 .section .debug_info,"",@progbits
  39 .Lcu_begin0:
  40         .long   .Lcu_end0 - .Lcu_begin0 - 4
  41         .short  4              # DWARF version number
  42         .long   0              # Offset Into Abbrev. Section
  43         .byte   8              # Address Size
  44 .Ldie0:
  45         .byte   1              # Abbrev [1] DW_TAG_compile_unit
  46         .byte   2              # Abbrev [2] DW_TAG_subprogram
  47         .asciz  "_start"       # DW_AT_name
  48         .byte   0
  49         .byte   0
  50 .Lcu_end0:
  51 .Lcu_begin1:
  52         .long   .Lcu_end1 - .Lcu_begin1 - 4
  53         .short  4              # DWARF version number
  54         .long   0              # Offset Into Abbrev. Section
  55         .byte   8              # Address Size
  56 .Ldie1:
  57         .byte   1              # Abbrev [1] DW_TAG_compile_unit
  58         .byte   2              # Abbrev [2] DW_TAG_subprogram
  59         .asciz  "foo"          # DW_AT_name
  60         .byte   0
  61 .Lcu_end1:
  62
  63 # Swap sets to test the case where pubnames are in a
  64 # different order than the CUs they refer to.
  65 .section .debug_gnu_pubnames,"",@progbits
  66         # cuIndex: 1
  67         .long   .LpubNames_end1 - .LpubNames_begin1
  68 .LpubNames_begin1:
  69         .short  2              # Version
  70         .long   .Lcu_begin1    # CU Offset
  71         .long   .Lcu_end1 - .Lcu_begin1
  72         .long   .Ldie1 - .Lcu_begin1
  73         .byte   48             # Attributes: FUNCTION, EXTERNAL
  74         .asciz  "foo"          # External Name
  75         .long   0
  76 .LpubNames_end1:
  77
  78         # cuIndex: 0
  79         .long   .LpubNames_end0 - .LpubNames_begin0
  80 .LpubNames_begin0:
  81         .short  2              # Version
  82         .long   .Lcu_begin0    # CU Offset
  83         .long   .Lcu_end0 - .Lcu_begin0
  84         .long   .Ldie0 - .Lcu_begin0
  85         .byte   48             # Attributes: FUNCTION, EXTERNAL
  86         .asciz  "_start"       # External Name
  87         .long   0
  88 .LpubNames_end0: