1# REQUIRES: x86, zlib 2## -gdwarf-5 -fdebug-types-section may produce multiple .debug_info sections. 3## All except one are type units. Test we can locate the compile unit, add it to 4## the index, and not erroneously duplicate it (which would happen if we 5## consider every .debug_info a compile unit). 6 7# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o 8# RUN: ld.lld --gdb-index -Ttext=0x1000 %t.o -o %t 9# RUN: llvm-dwarfdump --gdb-index %t | FileCheck %s 10 11## Test we don't uncompress a section while another thread is concurrently 12## accessing it. This would be detected by tsan as a data race. 13# RUN: llvm-objcopy --compress-debug-sections %t.o 14# RUN: ld.lld --gdb-index -Ttext=0x1000 %t.o -o %t1 15# RUN: llvm-dwarfdump --gdb-index %t1 | FileCheck %s 16 17## In this test, there are actually two compile unit .debug_info (very uncommon; 18## -r --unique). Currently we only handle the last compile unit. 19# CHECK: CU list offset = 0x18, has 1 entries: 20# CHECK-NEXT: 0: Offset = 0x32, Length = 0x19 21 22# CHECK: Address area offset = 0x28, has 1 entries: 23# CHECK-NEXT: Low/High address = [0x1001, 0x1002) (Size: 0x1), CU id = 0 24 25.Lfunc_begin0: 26 ret 27.Lfunc_end0: 28.Lfunc_begin1: 29 ret 30.Lfunc_end1: 31 32.section .debug_abbrev,"",@progbits 33 .byte 1 # Abbreviation Code 34 .byte 65 # DW_TAG_type_unit 35 .byte 0 # DW_CHILDREN_no 36 .byte 0 # EOM(1) 37 .byte 0 # EOM(2) 38 39 .byte 2 # Abbreviation Code 40 .byte 17 # DW_TAG_compile_unit 41 .byte 0 # DW_CHILDREN_no 42 .byte 17 # DW_AT_low_pc 43 .byte 1 # DW_FORM_addr 44 .byte 18 # DW_AT_high_pc 45 .byte 6 # DW_FORM_data4 46 .byte 0 # EOM(1) 47 .byte 0 # EOM(2) 48 49 .byte 0 # EOM(3) 50 51.macro TYPE_UNIT id signature 52.section .debug_info,"G",@progbits,\signature 53 .long .Ldebug_info_end\id-.Ldebug_info_start\id # Length of Unit 54.Ldebug_info_start\id: 55 .short 5 # DWARF version number 56 .byte 2 # DWARF Unit Type 57 .byte 8 # Address Size 58 .long .debug_abbrev # Offset Into Abbrev. Section 59 .quad \signature # Type Signature 60 .long .Ldebug_info_end\id # Type DIE Offset 61 .byte 1 # Abbrev [1] DW_TAG_type_unit 62.Ldebug_info_end\id: 63.endm 64 65## We place compile units between two type units (rare). A naive approach will 66## take either the first or the last .debug_info 67TYPE_UNIT 0, 123 68 69.section .debug_info,"",@progbits,unique,0 70.Lcu_begin0: 71 .long .Lcu_end0-.Lcu_begin0-4 # Length of Unit 72 .short 5 # DWARF version number 73 .byte 1 # DWARF Unit Type 74 .byte 8 # Address Size 75 .long .debug_abbrev # Offset Into Abbrev. Section 76 .byte 2 # Abbrev [2] DW_TAG_compile_unit 77 .quad .Lfunc_begin0 # DW_AT_low_pc 78 .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc 79.Lcu_end0: 80 81.section .debug_info,"",@progbits,unique,1 82.Lcu_begin1: 83 .long .Lcu_end1-.Lcu_begin1-4 # Length of Unit 84 .short 5 # DWARF version number 85 .byte 1 # DWARF Unit Type 86 .byte 8 # Address Size 87 .long .debug_abbrev # Offset Into Abbrev. Section 88 .byte 2 # Abbrev [2] DW_TAG_compile_unit 89 .quad .Lfunc_begin1 # DW_AT_low_pc 90 .long .Lfunc_end1-.Lfunc_begin1 # DW_AT_high_pc 91.Lcu_end1: 92 93TYPE_UNIT 1, 456 94