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[ObjectYAML][DWARF] Support emitting the .debug_aranges section in ELFYAML.
This patch enables yaml2obj to emit the .debug_aranges section in ELFYAML. Known issues: - The current implementation of `debug_aranges` doesn't support emitting `segment` in the `(segment, address, length)` tuple. I will fix it in a follow-up patch. Reviewed By: jhenderson Differential Revision: https://reviews.llvm.org/D80972
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Xing GUO
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92114f8000
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@ -25,6 +25,8 @@ SetVector<StringRef> DWARFYAML::Data::getUsedSectionNames() const {
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SetVector<StringRef> SecNames;
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if (!DebugStrings.empty())
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SecNames.insert("debug_str");
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if (!ARanges.empty())
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SecNames.insert("debug_aranges");
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return SecNames;
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}
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@ -820,6 +820,8 @@ uint64_t emitDWARF(typename ELFT::Shdr &SHeader, StringRef Name,
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uint64_t BeginOffset = OS.tell();
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if (Name == ".debug_str")
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DWARFYAML::EmitDebugStr(OS, DWARF);
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else if (Name == ".debug_aranges")
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DWARFYAML::EmitDebugAranges(OS, DWARF);
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else
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llvm_unreachable("unexpected emitDWARF() call");
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268
test/tools/yaml2obj/ELF/DWARF/debug-aranges.yaml
Normal file
268
test/tools/yaml2obj/ELF/DWARF/debug-aranges.yaml
Normal file
@ -0,0 +1,268 @@
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## Test that yaml2obj emits .debug_aranges section.
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## a) Generate the .debug_aranges section from the "DWARF" entry.
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## Generate and verify a big endian object file.
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# RUN: yaml2obj --docnum=1 -DENDIAN=ELFDATA2MSB %s -o %t1.o
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# RUN: llvm-readobj --sections --section-data %t1.o | \
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# RUN: FileCheck %s -DADDRALIGN=1 -DSIZE=96 --check-prefixes=DWARF-BE-HEADER,DWARF-BE-CONTENT
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# DWARF-BE-HEADER: Index: 1
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# DWARF-BE-HEADER-NEXT: Name: .debug_aranges (1)
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# DWARF-BE-HEADER-NEXT: Type: SHT_PROGBITS (0x1)
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# DWARF-BE-HEADER-NEXT: Flags [ (0x0)
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# DWARF-BE-HEADER-NEXT: ]
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# DWARF-BE-HEADER-NEXT: Address: 0x0
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# DWARF-BE-HEADER-NEXT: Offset: 0x40
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# DWARF-BE-HEADER-NEXT: Size: [[SIZE]]
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# DWARF-BE-HEADER-NEXT: Link: 0
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# DWARF-BE-HEADER-NEXT: Info: 0
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# DWARF-BE-HEADER-NEXT: AddressAlignment: [[ADDRALIGN]]
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# DWARF-BE-HEADER-NEXT: EntrySize: 0
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# DWARF-BE-CONTENT: SectionData (
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# DWARF-BE-CONTENT-NEXT: 0000: 0000002C 00020000 00000400 00000000
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## | | | | | |
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## | | | | | +------- Padding zeros (4-byte)
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## | | | | +- SegSize (1-byte) 0x00
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## | | | +- AddrSize (1-byte) 0x04
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## | | +-------- CuOffset (4-byte) 0x00
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## | +--- Version (2-byte) 0x02
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## +------- InitialLength (4-byte) 0x2c
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##
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# DWARF-BE-CONTENT-NEXT: 0010: 00001234 00000020 00000000 00000000
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## | | |
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## | | +---------------- Terminating Entry
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## | +------- Length (4-byte) 0x20
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## +------- Address (4-byte) 0x1234
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##
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# DWARF-BE-CONTENT-NEXT: 0020: 0000002C 00020000 00650800 00000000
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## | | | | | |
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## | | | | | +------- Padding zeros (4-byte)
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## | | | | +- SegSize (1-byte) 0x00
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## | | | +- AddrSize (1-byte) 0x08
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## | | +-------- CuOffset (4-byte) 0x00
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## | +--- Version (2-byte) 0x02
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## +------- InitialLength (4-byte) 0x2c
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##
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# DWARF-BE-CONTENT-NEXT: 0030: 00000000 00005678 00000000 00000020
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## | |
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## | +---------------- Length (8-byte) 0x20
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## +---------------- Address (8-byte) 0x5678
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##
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# DWARF-BE-CONTENT-NEXT: 0040: 00000000 56780000 00000000 00000010
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## | |
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## | +---------------- Length (8-byte) 0x10
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## +---------------- Address (8-byte) 0x5678
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##
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# DWARF-BE-CONTENT-NEXT: 0050: 00000000 00000000 00000000 00000000
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## |
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## +---------------------------------- Terminating entry
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##
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# DWARF-BE-CONTENT-NEXT: )
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: [[ENDIAN]]
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Type: ET_EXEC
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Machine: EM_X86_64
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DWARF:
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debug_aranges:
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- Length:
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TotalLength: 0x2c
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Version: 2
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CuOffset: 0
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AddrSize: 0x04
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SegSize: 0x00
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Descriptors:
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- Address: 0x00001234
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Length: 0x20
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- Length:
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TotalLength: 0x2c
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Version: 2
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CuOffset: 0x65
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AddrSize: 0x08
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SegSize: 0x00
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Descriptors:
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- Address: 0x0000000000005678
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Length: 0x20
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- Address: 0x0000000056780000
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Length: 0x10
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## b) Generate the .debug_aranges section from raw section content.
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# RUN: yaml2obj --docnum=2 %s -o %t2.o
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# RUN: llvm-readobj --sections --section-data %t2.o | \
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# RUN: FileCheck %s -DADDRALIGN=0 -DSIZE=3 --check-prefixes=DWARF-BE-HEADER,ARBITRARY-CONTENT
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# ARBITRARY-CONTENT: SectionData (
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# ARBITRARY-CONTENT-NEXT: 0000: 112233
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# ARBITRARY-CONTENT-NEXT: )
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2MSB
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Type: ET_EXEC
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Machine: EM_X86_64
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Sections:
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- Name: .debug_aranges
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Type: SHT_PROGBITS
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Content: "112233"
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## c) Generate the .debug_aranges section when the "Size" is specified.
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# RUN: yaml2obj --docnum=3 %s -o %t3.o
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# RUN: llvm-readobj --hex-dump=.debug_aranges %t3.o | FileCheck %s --check-prefix=SIZE
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# SIZE: Hex dump of section '.debug_aranges':
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# SIZE-NEXT: 0x00000000 00000000 00000000 00000000 00000000 ................
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# SIZE-EMPTY:
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2MSB
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Type: ET_EXEC
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Machine: EM_X86_64
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Sections:
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- Name: .debug_aranges
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Type: SHT_PROGBITS
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Size: 0x10
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## d) Test that yaml2obj emits an error message when both the "Size" and the
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## "debug_aranges" entry are specified at the same time.
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# RUN: not yaml2obj --docnum=4 %s 2>&1 | FileCheck %s --check-prefix=ERROR
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# ERROR: yaml2obj: error: cannot specify section '.debug_aranges' contents in the 'DWARF' entry and the 'Content' or 'Size' in the 'Sections' entry at the same time
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2MSB
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Type: ET_EXEC
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Machine: EM_X86_64
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Sections:
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- Name: .debug_aranges
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Type: SHT_PROGBITS
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Size: 0x10
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DWARF:
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debug_aranges:
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- Length:
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TotalLength: 0x2c
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Version: 2
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CuOffset: 0
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AddrSize: 0x08
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SegSize: 0x00
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Descriptors:
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- Address: 0x0000000000001234
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Length: 0x20
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## e) Test that yaml2obj emits an error message when both the "Content" and the
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## "debug_aranges" entry are specified at the same time.
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# RUN: not yaml2obj --docnum=5 %s 2>&1 | FileCheck %s --check-prefix=ERROR
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2MSB
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Type: ET_EXEC
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Machine: EM_X86_64
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Sections:
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- Name: .debug_aranges
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Type: SHT_PROGBITS
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Content: "00"
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DWARF:
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debug_aranges:
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- Length:
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TotalLength: 0x2c
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Version: 2
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CuOffset: 0
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AddrSize: 0x08
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SegSize: 0x00
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Descriptors:
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- Address: 0x0000000000001234
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Length: 0x20
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## f) Test that all the properties can be overridden by the section header when
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## the "debug_aranges" entry doesn't exist.
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# RUN: yaml2obj --docnum=6 %s -o %t6.o
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# RUN: llvm-readelf --sections %t6.o | FileCheck %s --check-prefix=OVERRIDDEN
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# OVERRIDDEN: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
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# OVERRIDDEN: [ 1] .debug_aranges STRTAB 0000000000002020 000050 000030 01 A 2 1 2
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# OVERRIDDEN-NEXT: [ 2] .sec STRTAB 0000000000000000 000080 000000 00 0 0 0
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2MSB
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Type: ET_EXEC
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Machine: EM_X86_64
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Sections:
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- Name: .debug_aranges
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Type: SHT_STRTAB # SHT_PROGBITS by default.
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Flags: [SHF_ALLOC] # 0 by default.
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Link: .sec # 0 by default.
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EntSize: 1 # 0 by default.
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Info: 1 # 0 by default.
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AddressAlign: 2 # 0 by default.
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Address: 0x0000000000002020 # 0x00 by default.
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Offset: 0x00000050 # 0x40 for the first section.
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Size: 0x30 # Set the "Size" so that we can reuse the check tag "OVERRIDDEN".
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- Name: .sec # Linked by .debug_aranges.
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Type: SHT_STRTAB
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## g) Test that all the properties can be overridden by the section header when
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## the "debug_aranges" entry exists.
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# RUN: yaml2obj --docnum=7 %s -o %t7.o
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# RUN: llvm-readelf --sections %t7.o | FileCheck %s --check-prefix=OVERRIDDEN
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2MSB
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Type: ET_EXEC
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Machine: EM_X86_64
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Sections:
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- Name: .debug_aranges
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Type: SHT_STRTAB # SHT_PROGBITS by default.
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Flags: [SHF_ALLOC] # 0 by default.
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Link: .sec # 0 by default.
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EntSize: 1 # 0 by default.
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Info: 1 # 0 by default.
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AddressAlign: 2 # 1 by default.
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Address: 0x0000000000002020 # 0x00 by default.
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Offset: 0x00000050 # 0x40 for the first section.
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- Name: .sec # Linked by .debug_aranges.
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Type: SHT_STRTAB
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DWARF:
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debug_aranges:
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- Length:
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TotalLength: 0x2c
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Version: 2
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CuOffset: 0
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AddrSize: 0x08
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SegSize: 0x00
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Descriptors:
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- Address: 0x0000000000001234
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Length: 0x20
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## h) Test that yaml2obj will not generate the .debug_aranges section when the "DWARF" entry
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## exists but the "debug_aranges" entry doesn't exist in the "DWARF" entry or the "Sections" entry.
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# RUN: yaml2obj --docnum=8 %s -o %t8.o
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# RUN: llvm-readelf --sections %t8.o | FileCheck /dev/null --implicit-check-not=.debug_aranges
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2MSB
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Type: ET_EXEC
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Machine: EM_X86_64
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DWARF:
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