| # REQUIRES: x86, zlib |
| ## -gdwarf-5 -fdebug-types-section may produce multiple .debug_info sections. |
| ## All except one are type units. Test we can locate the compile unit, add it to |
| ## the index, and not erroneously duplicate it (which would happen if we |
| ## consider every .debug_info a compile unit). |
| |
| # RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o |
| # RUN: ld.lld --gdb-index -Ttext=0x1000 %t.o -o %t |
| # RUN: llvm-dwarfdump --gdb-index %t | FileCheck %s |
| |
| ## Test we don't uncompress a section while another thread is concurrently |
| ## accessing it. This would be detected by tsan as a data race. |
| # RUN: llvm-objcopy --compress-debug-sections %t.o |
| # RUN: ld.lld --gdb-index -Ttext=0x1000 %t.o -o %t1 |
| # RUN: llvm-dwarfdump --gdb-index %t1 | FileCheck %s |
| |
| ## In this test, there are actually two compile unit .debug_info (very uncommon; |
| ## -r --unique). Currently we only handle the last compile unit. |
| # CHECK: CU list offset = 0x18, has 1 entries: |
| # CHECK-NEXT: 0: Offset = 0x32, Length = 0x19 |
| |
| # CHECK: Address area offset = 0x28, has 1 entries: |
| # CHECK-NEXT: Low/High address = [0x1001, 0x1002) (Size: 0x1), CU id = 0 |
| |
| .Lfunc_begin0: |
| ret |
| .Lfunc_end0: |
| .Lfunc_begin1: |
| ret |
| .Lfunc_end1: |
| |
| .section .debug_abbrev,"",@progbits |
| .byte 1 # Abbreviation Code |
| .byte 65 # DW_TAG_type_unit |
| .byte 0 # DW_CHILDREN_no |
| .byte 0 # EOM(1) |
| .byte 0 # EOM(2) |
| |
| .byte 2 # Abbreviation Code |
| .byte 17 # DW_TAG_compile_unit |
| .byte 0 # DW_CHILDREN_no |
| .byte 17 # DW_AT_low_pc |
| .byte 1 # DW_FORM_addr |
| .byte 18 # DW_AT_high_pc |
| .byte 6 # DW_FORM_data4 |
| .byte 0 # EOM(1) |
| .byte 0 # EOM(2) |
| |
| .byte 0 # EOM(3) |
| |
| .macro TYPE_UNIT id signature |
| .section .debug_info,"G",@progbits,\signature |
| .long .Ldebug_info_end\id-.Ldebug_info_start\id # Length of Unit |
| .Ldebug_info_start\id: |
| .short 5 # DWARF version number |
| .byte 2 # DWARF Unit Type |
| .byte 8 # Address Size |
| .long .debug_abbrev # Offset Into Abbrev. Section |
| .quad \signature # Type Signature |
| .long .Ldebug_info_end\id # Type DIE Offset |
| .byte 1 # Abbrev [1] DW_TAG_type_unit |
| .Ldebug_info_end\id: |
| .endm |
| |
| ## We place compile units between two type units (rare). A naive approach will |
| ## take either the first or the last .debug_info |
| TYPE_UNIT 0, 123 |
| |
| .section .debug_info,"",@progbits,unique,0 |
| .Lcu_begin0: |
| .long .Lcu_end0-.Lcu_begin0-4 # Length of Unit |
| .short 5 # DWARF version number |
| .byte 1 # DWARF Unit Type |
| .byte 8 # Address Size |
| .long .debug_abbrev # Offset Into Abbrev. Section |
| .byte 2 # Abbrev [2] DW_TAG_compile_unit |
| .quad .Lfunc_begin0 # DW_AT_low_pc |
| .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc |
| .Lcu_end0: |
| |
| .section .debug_info,"",@progbits,unique,1 |
| .Lcu_begin1: |
| .long .Lcu_end1-.Lcu_begin1-4 # Length of Unit |
| .short 5 # DWARF version number |
| .byte 1 # DWARF Unit Type |
| .byte 8 # Address Size |
| .long .debug_abbrev # Offset Into Abbrev. Section |
| .byte 2 # Abbrev [2] DW_TAG_compile_unit |
| .quad .Lfunc_begin1 # DW_AT_low_pc |
| .long .Lfunc_end1-.Lfunc_begin1 # DW_AT_high_pc |
| .Lcu_end1: |
| |
| TYPE_UNIT 1, 456 |