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George Rimar
38d4353156
This patch tries to resolve problems faced in D68943 and uses some of the code written by Konrad Wilhelm Kleine in that patch. Previously, yaml2obj tool always created a .symtab section. This patch changes that. With it we only create it when have a "Symbols:" tag in the YAML document or when we need to create it because it is used by another section(s). obj2yaml follows the new behavior and does not print "Symbols:" anymore when there is no symbol table. Differential revision: https://reviews.llvm.org/D69041 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@375361 91177308-0d34-0410-b5e6-96231b3b80d8
72 lines
1.7 KiB
Plaintext
72 lines
1.7 KiB
Plaintext
## Checks that the tool is able to read section groups from ELF.
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# RUN: yaml2obj --docnum=1 %s > %t1.o
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# RUN: llvm-readobj --elf-section-groups %t1.o | FileCheck %s -check-prefix=OBJ
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# RUN: obj2yaml %t1.o | FileCheck %s --check-prefix YAML
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# OBJ: Groups {
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# OBJ-NEXT: Group {
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# OBJ-NEXT: Name: .group
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# OBJ-NEXT: Index: 1
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# OBJ-NEXT: Link: 3
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# OBJ-NEXT: Info: 1
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# OBJ-NEXT: Type: COMDAT (0x1)
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# OBJ-NEXT: Signature: signature
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# OBJ-NEXT: Section(s) in group [
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# OBJ-NEXT: .rodata (2)
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# OBJ-NEXT: ]
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# OBJ-NEXT: }
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# OBJ-NEXT: }
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# YAML: - Name: .group
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# YAML: Type: SHT_GROUP
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# YAML: Link: .symtab
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# YAML: Info: signature
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# YAML: Members:
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# YAML: - SectionOrType: GRP_COMDAT
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# YAML: - SectionOrType: .rodata
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_REL
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Machine: EM_X86_64
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Sections:
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- Name: .group
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Type: SHT_GROUP
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Link: .symtab
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Info: signature
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Members:
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- SectionOrType: GRP_COMDAT
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- SectionOrType: .rodata
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- Name: .rodata
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Type: SHT_PROGBITS
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Symbols:
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- Name: signature
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Type: STT_OBJECT
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Section: .rodata
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## Check obj2yaml report an error when sh_info field of
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## group section contains invalid (too large) signature symbol index.
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# RUN: yaml2obj --docnum=2 %s > %t2.o
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# RUN: not obj2yaml %t2.o 2>&1 | FileCheck %s --check-prefix ERR
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_REL
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Machine: EM_X86_64
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Sections:
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- Name: .group
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Type: SHT_GROUP
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Link: .symtab
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Info: 0xFF
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Members:
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- SectionOrType: GRP_COMDAT
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Symbols: []
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# ERR: Error reading file: {{.*}}2.o: unable to get symbol from section [index 2]: invalid symbol index (255)
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