[ELF] Add a better test for the multi-CU .gdb_index bug that D54361 fixed
gdb-index-multiple-cu-2.s puts the symbol in question to another object file %t1.o, so that its CuIndex is affected by the number of CUs in %t.o Also change `Kind:` in a comment to `Attributes:` as a follow-up of D54480 and D54481 llvm-svn: 346796
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.globl _start
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_start:
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.section .debug_abbrev,"",@progbits
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.byte 1 # Abbreviation Code
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.byte 17 # DW_TAG_compile_unit
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.byte 1 # DW_CHILDREN_yes
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.ascii "\264B" # DW_AT_GNU_pubnames
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.byte 25 # DW_FORM_flag_present
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 2 # Abbreviation Code
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.byte 46 # DW_TAG_subprogram
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.byte 0 # DW_CHILDREN_no
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.byte 3 # DW_AT_name
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.byte 8 # DW_FORM_string
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 0
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.section .debug_info,"",@progbits
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.Lcu_begin0:
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.long .Lcu_end0 - .Lcu_begin0 - 4
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.short 4 # DWARF version number
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.long 0 # Offset Into Abbrev. Section
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.byte 4 # Address Size
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.Ldie:
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.byte 1 # Abbrev [1] DW_TAG_compile_unit
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.byte 2 # Abbrev [2] DW_TAG_subprogram
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.asciz "_start" # DW_AT_name
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.byte 0
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.Lcu_end0:
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# .debug_gnu_pubnames has just one set, associated with .Lcu_begin1 (CuIndex: 1)
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.section .debug_gnu_pubnames,"",@progbits
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.long .LpubNames_end0 - .LpubNames_begin0
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.LpubNames_begin0:
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.short 2 # Version
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.long .Lcu_begin0 # CU Offset
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.long .Lcu_end0 - .Lcu_begin0
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.long .Ldie - .Lcu_begin0
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.byte 48 # Attributes: FUNCTION, EXTERNAL
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.asciz "_start" # External Name
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.long 0
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.LpubNames_end0:
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@ -0,0 +1,35 @@
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# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
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# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/gdb-index-multiple-cu-2.s -o %t1.o
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# RUN: ld.lld --gdb-index %t.o %t1.o -o %t
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# RUN: llvm-dwarfdump -gdb-index %t | FileCheck %s
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# %t.o has 2 CUs while %t1 has 1, thus _start in %t1.o should have CuIndex 2.
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# Attributes << 24 | CuIndex = 48 << 24 | 2 = 0x30000002
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# CHECK: Constant pool
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# CHECK-NEXT: 0(0x0): 0x30000002
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.section .debug_abbrev,"",@progbits
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.byte 1 # Abbreviation Code
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.byte 17 # DW_TAG_compile_unit
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.byte 0 # DW_CHILDREN_yes
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 0
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.section .debug_info,"",@progbits
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.Lcu_begin0:
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.long .Lcu_end0 - .Lcu_begin0 - 4
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.short 4 # DWARF version number
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.long 0 # Offset Into Abbrev. Section
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.byte 4 # Address Size
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.byte 1 # Abbrev [1] DW_TAG_compile_unit
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.byte 0
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.Lcu_end0:
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.Lcu_begin1:
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.long .Lcu_end1 - .Lcu_begin1 - 4
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.short 4 # DWARF version number
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.long 0 # Offset Into Abbrev. Section
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.byte 4 # Address Size
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.byte 1 # Abbrev [1] DW_TAG_compile_unit
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.byte 0
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.Lcu_end1:
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@ -2,7 +2,7 @@
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# RUN: ld.lld --gdb-index %t.o -o %t
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# RUN: llvm-dwarfdump -gdb-index %t | FileCheck %s
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# Kind << 24 | CuIndex = 48 << 24 | 1 = 0x30000001
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# Attributes << 24 | CuIndex = 48 << 24 | 1 = 0x30000001
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# CHECK: Constant pool
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# CHECK-NEXT: 0(0x0): 0x30000001
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@ -58,7 +58,7 @@ _start:
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.long .Lcu_begin1 # CU Offset
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.long .Lcu_end1 - .Lcu_begin1
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.long .Ldie - .Lcu_begin1
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.byte 48 # Kind: FUNCTION, EXTERNAL
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.byte 48 # Attributes: FUNCTION, EXTERNAL
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.asciz "_start" # External Name
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.long 0
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.LpubNames_end1:
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