# 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
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