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[llvm-dwp] Add support for rnglists and loclists

This patch updates llvm-dwp to include rnglists and loclists
when parsing debug sections.

Reviewed By: dblaikie

Differential Revision: https://reviews.llvm.org/D101894
This commit is contained in:
Kim-Anh Tran 2021-06-02 12:31:35 -07:00 committed by David Blaikie
parent 8448b16d77
commit c835b7a765
3 changed files with 144 additions and 0 deletions

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@ -0,0 +1,73 @@
# This test checks if llvm-dwp outputs .debug_loclists.
# RUN: llvm-mc -triple x86_64-unknown-linux %s -filetype=obj -o %t.o \
# RUN: -split-dwarf-file=%t.dwo -dwarf-version=5
# RUN: llvm-dwp %t.dwo -o %t.dwp
# RUN: llvm-dwarfdump -debug-loclists -debug-cu-index -debug-tu-index %t.dwp | FileCheck %s
# CHECK-DAG: .debug_loclists.dwo contents:
# CHECK: locations list header: length = 0x00000019, format = DWARF32, version = 0x0005, addr_size = 0x08, seg_size = 0x00, offset_entry_count = 0x00000001
# CHECK-NEXT: offsets: [
# CHECK-NEXT: 0x00000004
# CHECK-NEXT: ]
# CHECK: DW_LLE_base_addressx (0x0000000000000000)
# CHECK-NEXT: DW_LLE_offset_pair (0x0000000000000000, 0x0000000000000004): DW_OP_reg5 RDI
# CHECK-NEXT: DW_LLE_offset_pair (0x0000000000000004, 0x0000000000000008): DW_OP_reg3 RBX
# CHECK-DAG: .debug_cu_index contents:
# CHECK: Index Signature INFO ABBREV LOCLISTS
# CHECK: 1 {{.*}} [0x00000018, 0x0000002d) [0x00000000, 0x00000004) [0x00000000, 0x0000001d)
# CHECK-DAG: .debug_tu_index contents:
# CHECK: Index Signature INFO ABBREV LOCLISTS
# CHECK: 2 {{.*}} [0x00000000, 0x00000018) [0x00000000, 0x00000004) [0x00000000, 0x0000001d)
.section .debug_info.dwo,"e",@progbits
.long .Ldebug_info_dwo_end0-.Ldebug_info_dwo_start0 # Length of Unit
.Ldebug_info_dwo_start0:
.short 5 # DWARF version number
.byte 6 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long 0 # Offset Into Abbrev. Section
.quad -4287463584810542331 # Type Signature
.long 31 # Type DIE Offset
.Ldebug_info_dwo_end0:
.section .debug_info.dwo,"e",@progbits
.long .Ldebug_info_dwo_end3-.Ldebug_info_dwo_start3 # Length of Unit
.Ldebug_info_dwo_start3:
.short 5 # DWARF version number
.byte 5 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long 0 # Offset Into Abbrev. Section
.quad 1152943841751211454
.byte 1 # Abbrev [1] 0x14:0x349 DW_TAG_compile_unit
.Ldebug_info_dwo_end3:
.section .debug_loclists.dwo,"e",@progbits
.long .Ldebug_list_header_end0-.Ldebug_list_header_start0 # Length
.Ldebug_list_header_start0:
.short 5 # Version
.byte 8 # Address size
.byte 0 # Segment selector size
.long 1 # Offset entry count
.Lloclists_table_base0:
.long .Ldebug_loc0-.Lloclists_table_base0
.Ldebug_loc0:
.byte 1 # DW_LLE_base_addressx
.byte 0 # base address index
.byte 4 # DW_LLE_offset_pair
.uleb128 0 # starting offset
.uleb128 4 # ending offset
.byte 1 # Loc expr size
.byte 85 # DW_OP_reg5
.byte 4 # DW_LLE_offset_pair
.uleb128 4 # starting offset
.uleb128 8 # ending offset
.byte 1 # Loc expr size
.byte 83 # DW_OP_reg3
.byte 0 # DW_LLE_end_of_list
.Ldebug_list_header_end0:
.section .debug_abbrev.dwo,"e",@progbits
.byte 1 # Abbreviation Code
.byte 17 # DW_TAG_compile_unit
.byte 0 # DW_CHILDREN_no
.byte 0 # EOM(1)

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@ -0,0 +1,67 @@
# This test checks if llvm-dwp outputs .debug_rnglists.
# RUN: llvm-mc -triple x86_64-unknown-linux %s -filetype=obj -o %t.o \
# RUN: -split-dwarf-file=%t.dwo -dwarf-version=5
# RUN: llvm-dwp %t.dwo -o %t.dwp
# RUN: llvm-dwarfdump -debug-rnglists -debug-cu-index -debug-tu-index %t.dwp | FileCheck %s
# CHECK-DAG: .debug_cu_index contents:
# CHECK: Index Signature INFO ABBREV RNGLISTS
# CHECK: 1 {{.*}} [0x00000018, 0x0000002d) [0x00000000, 0x00000004) [0x00000000, 0x00000017)
# CHECK-DAG: .debug_tu_index contents:
# CHECK: Index Signature INFO ABBREV RNGLISTS
# CHECK: 2 {{.*}} [0x00000000, 0x00000018) [0x00000000, 0x00000004) [0x00000000, 0x00000017)
# CHECK-DAG: .debug_rnglists.dwo contents:
# range list header: length = 0x00000013, format = DWARF32, version = 0x0005, addr_size = 0x08, seg_size = 0x00, offset_entry_count = 0x00000001
# CHECK: offsets: [
# CHECK-NEXT: 0x00000004
# CHECK-NEXT: ]
# CHECK-NEXT: ranges:
# CHECK-NEXT: [0x0000000000000004, 0x0000000000000008)
# CHECK-NEXT: [0x000000000000000c, 0x0000000000000010)
.section .debug_info.dwo,"e",@progbits
.long .Ldebug_info_dwo_end0-.Ldebug_info_dwo_start0 # Length of Unit
.Ldebug_info_dwo_start0:
.short 5 # DWARF version number
.byte 6 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long 0 # Offset Into Abbrev. Section
.quad -4287463584810542331 # Type Signature
.long 31 # Type DIE Offset
.Ldebug_info_dwo_end0:
.section .debug_info.dwo,"e",@progbits
.long .Ldebug_info_dwo_end3-.Ldebug_info_dwo_start3 # Length of Unit
.Ldebug_info_dwo_start3:
.short 5 # DWARF version number
.byte 5 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long 0 # Offset Into Abbrev. Section
.quad 1152943841751211454
.byte 1 # Abbrev [1] 0x14:0x349 DW_TAG_compile_unit
.Ldebug_info_dwo_end3:
.section .debug_abbrev.dwo,"e",@progbits
.byte 1 # Abbreviation Code
.byte 17 # DW_TAG_compile_unit
.byte 0 # DW_CHILDREN_no
.byte 0 # EOM(1)
.section .debug_rnglists.dwo,"e",@progbits
.long .Ldebug_list_header_end1-.Ldebug_list_header_start1 # Length
.Ldebug_list_header_start1:
.short 5 # Version
.byte 8 # Address size
.byte 0 # Segment selector size
.long 1 # Offset entry count
.Lrnglists_dwo_table_base0:
.long .Ldebug_ranges0-.Lrnglists_dwo_table_base0
.Ldebug_ranges0:
.byte 4 # DW_RLE_offset_pair
.uleb128 4 # starting offset
.uleb128 8 # ending offset
.byte 4 # DW_RLE_offset_pair
.uleb128 12 # starting offset
.uleb128 16 # ending offset
.byte 0 # DW_RLE_end_of_list
.Ldebug_list_header_end1:

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@ -666,6 +666,10 @@ static Error write(MCStreamer &Out, ArrayRef<std::string> Inputs) {
{"debug_line.dwo", {MCOFI.getDwarfLineDWOSection(), DW_SECT_LINE}},
{"debug_macro.dwo", {MCOFI.getDwarfMacroDWOSection(), DW_SECT_MACRO}},
{"debug_abbrev.dwo", {MCOFI.getDwarfAbbrevDWOSection(), DW_SECT_ABBREV}},
{"debug_loclists.dwo",
{MCOFI.getDwarfLoclistsDWOSection(), DW_SECT_LOCLISTS}},
{"debug_rnglists.dwo",
{MCOFI.getDwarfRnglistsDWOSection(), DW_SECT_RNGLISTS}},
{"debug_cu_index", {CUIndexSection, static_cast<DWARFSectionKind>(0)}},
{"debug_tu_index", {TUIndexSection, static_cast<DWARFSectionKind>(0)}}};