[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

diff --git a/llvm/test/tools/llvm-dwp/X86/loclists.s b/llvm/test/tools/llvm-dwp/X86/loclists.s
new file mode 100644 (file)
index 0000000..b96e5ee
--- /dev/null
+++ b/llvm/test/tools/llvm-dwp/X86/loclists.s
@@ -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)

diff --git a/llvm/test/tools/llvm-dwp/X86/rnglists.s b/llvm/test/tools/llvm-dwp/X86/rnglists.s
new file mode 100644 (file)
index 0000000..602cb3c
--- /dev/null
+++ b/llvm/test/tools/llvm-dwp/X86/rnglists.s
@@ -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:

diff --git a/llvm/tools/llvm-dwp/llvm-dwp.cpp b/llvm/tools/llvm-dwp/llvm-dwp.cpp
index bdddc85..b0b674a 100644 (file)
--- a/llvm/tools/llvm-dwp/llvm-dwp.cpp
+++ b/llvm/tools/llvm-dwp/llvm-dwp.cpp
@@ -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)}}};