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[llvm-objcopy][test] Improve many-sections object and test case
Additionally do some test tidy-ups and improve coverage of symbol section indexes where the logical section index >= SHN_LORESERVE. The symbol and section names in the many-section input object were mostly shared. This patch changes them to be distinct, enabling different operations such as --add-symbol, to be more targeted, when using the object. It also makes the test less confusing and removes some oddness in the symbol table order, presumably caused by the duplicate names. The input object was built from assembly that was of the form: .section s1 sym1: .section s2 sym2: ... with a total of 65536 such occurrences. llvm-objcopy was then used to remove the empty .text section automatically generated by MC, and incidentally to move .strtab to the end of the object. This ensured that the section/symbol indexes matched their name (i.e. section index 1 was s1, section index 2 was s2 etc, and sym1 was in s1, sym2 in s2 etc). Reviewed by: MaskRay Differential Revision: https://reviews.llvm.org/D97660
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James Henderson
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# RUN: %python %p/../Inputs/ungzip.py %p/Inputs/many-sections.o.gz > %t
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# RUN: llvm-objcopy -R .text -R s0 -R s1 -R s2 -R s3 -R s4 -R s5 -R s6 %t %t2
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# RUN: llvm-objcopy -R 's65[3-9][0-9][0-9]' -R 's6529[0-9]' -R 's6528[1-9]' %t %t2
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# RUN: llvm-readobj --sections %t2 | FileCheck --check-prefix=SECS %s
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# SECS-NOT: Name: .symtab_shndx
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@ -1,103 +1,102 @@
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## Show that llvm-objcopy can handle an input file with many sections.
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RUN: %python %p/../Inputs/ungzip.py %p/Inputs/many-sections.o.gz > %t
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RUN: llvm-objcopy %t %t2
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RUN: llvm-readobj --file-headers %t2 | FileCheck --check-prefix=EHDR %s
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RUN: llvm-readobj --sections %t2 | FileCheck --check-prefix=SECS %s
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RUN: llvm-readobj --symbols %t2 | grep "Symbol {" | wc -l | FileCheck --check-prefix=SYMS %s
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RUN: llvm-readobj --symbols %t2 | FileCheck %s --check-prefix=SYM_SEC_IDS
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RUN: llvm-readobj --file-headers --sections --symbols %t2 | FileCheck %s
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RUN: llvm-readelf --symbols %t2 | FileCheck --check-prefix=SYMS %s
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EHDR: Format: elf64-x86-64
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EHDR-NEXT: Arch: x86_64
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EHDR-NEXT: AddressSize: 64bit
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EHDR-NEXT: LoadName:
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EHDR-NEXT: ElfHeader {
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EHDR-NEXT: Ident {
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EHDR-NEXT: Magic: (7F 45 4C 46)
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EHDR-NEXT: Class: 64-bit (0x2)
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EHDR-NEXT: DataEncoding: LittleEndian (0x1)
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EHDR-NEXT: FileVersion: 1
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EHDR-NEXT: OS/ABI: SystemV (0x0)
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EHDR-NEXT: ABIVersion: 0
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EHDR-NEXT: Unused: (00 00 00 00 00 00 00)
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EHDR-NEXT: }
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EHDR-NEXT: Type: Relocatable (0x1)
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EHDR-NEXT: Machine: EM_X86_64 (0x3E)
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EHDR-NEXT: Version: 1
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EHDR-NEXT: Entry: 0x0
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EHDR-NEXT: ProgramHeaderOffset: 0x0
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EHDR-NEXT: SectionHeaderOffset:
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EHDR-NEXT: Flags [ (0x0)
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EHDR-NEXT: ]
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EHDR-NEXT: HeaderSize: 64
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EHDR-NEXT: ProgramHeaderEntrySize: 0
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EHDR-NEXT: ProgramHeaderCount: 0
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EHDR-NEXT: SectionHeaderEntrySize: 64
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EHDR-NEXT: SectionHeaderCount: 0
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EHDR-NEXT: StringTableSectionIndex: 65535
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EHDR-NEXT: }
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## The ELF header should have e_shnum == 0 and e_shstrndx == SHN_XINDEX.
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# CHECK: SectionHeaderCount: 0
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# CHECK-NEXT: StringTableSectionIndex: 65535
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SECS: Index: 65285
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SECS-NEXT: Name: .symtab
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SECS-NEXT: Type: SHT_SYMTAB
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SECS: Name: .symtab_shndx
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SECS-NEXT: Type: SHT_SYMTAB_SHNDX
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SECS-NEXT: Flags [ (0x0)
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SECS-NEXT: ]
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SECS-NEXT: Address: 0x0
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SECS-NEXT: Offset:
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# There should be #syms * EntrySize bytes.
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SECS-NEXT: Size: 261136
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SECS-NEXT: Link: 65285
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SECS-NEXT: Info:
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SECS-NEXT: AddressAlignment: 4
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SECS-NEXT: EntrySize: 4
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SECS: Index: 65287
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SYMS: 65284
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## The first section header should store the real section header count and
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## shstrndx in its fields.
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# CHECK: Section {
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# CHECK-NEXT: Index: 0
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# CHECK-NEXT: Name:
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# CHECK-NEXT: Type: SHT_NULL
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# CHECK-NEXT: Flags [
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address:
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# CHECK-NEXT: Offset:
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# CHECK-NEXT: Size: [[#SHNUM:]]
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# CHECK-NEXT: Link: [[#SHNUM-1]]
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SYM_SEC_IDS: Section: s9 (0xFEFF)
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SYM_SEC_IDS-NEXT: }
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SYM_SEC_IDS-NEXT: Symbol {
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SYM_SEC_IDS-NEXT: Name: s9 (37)
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SYM_SEC_IDS-NEXT: Value: 0x0
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SYM_SEC_IDS-NEXT: Size: 0
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SYM_SEC_IDS-NEXT: Binding: Local (0x0)
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SYM_SEC_IDS-NEXT: Type: None (0x0)
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SYM_SEC_IDS-NEXT: Other: 0
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SYM_SEC_IDS-NEXT: Section: s9 (0xFF01)
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SYM_SEC_IDS-NEXT: }
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SYM_SEC_IDS-NEXT: Symbol {
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SYM_SEC_IDS-NEXT: Name: s9 (37)
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SYM_SEC_IDS-NEXT: Value: 0x0
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SYM_SEC_IDS-NEXT: Size: 0
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SYM_SEC_IDS-NEXT: Binding: Local (0x0)
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SYM_SEC_IDS-NEXT: Type: None (0x0)
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SYM_SEC_IDS-NEXT: Other: 0
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SYM_SEC_IDS-NEXT: Section: s9 (0xFF00)
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SYM_SEC_IDS-NEXT: }
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SYM_SEC_IDS-NEXT: Symbol {
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SYM_SEC_IDS-NEXT: Name: s9 (37)
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SYM_SEC_IDS-NEXT: Value: 0x0
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SYM_SEC_IDS-NEXT: Size: 0
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SYM_SEC_IDS-NEXT: Binding: Local (0x0)
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SYM_SEC_IDS-NEXT: Type: None (0x0)
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SYM_SEC_IDS-NEXT: Other: 0
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SYM_SEC_IDS-NEXT: Section: s9 (0x1982)
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SYM_SEC_IDS-NEXT: }
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SYM_SEC_IDS-NEXT: Symbol {
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SYM_SEC_IDS-NEXT: Name: s9 (37)
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SYM_SEC_IDS-NEXT: Value: 0x0
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SYM_SEC_IDS-NEXT: Size: 0
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SYM_SEC_IDS-NEXT: Binding: Local (0x0)
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SYM_SEC_IDS-NEXT: Type: None (0x0)
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SYM_SEC_IDS-NEXT: Other: 0
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SYM_SEC_IDS-NEXT: Section: s9 (0xFF03)
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SYM_SEC_IDS-NEXT: }
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SYM_SEC_IDS-NEXT: Symbol {
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SYM_SEC_IDS-NEXT: Name: s9 (37)
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SYM_SEC_IDS-NEXT: Value: 0x0
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SYM_SEC_IDS-NEXT: Size: 0
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SYM_SEC_IDS-NEXT: Binding: Local (0x0)
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SYM_SEC_IDS-NEXT: Type: None (0x0)
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SYM_SEC_IDS-NEXT: Other: 0
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SYM_SEC_IDS-NEXT: Section: s9 (0xFF04)
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SYM_SEC_IDS-NEXT: }
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## Show that the .symtab_shndx section has the correct properties.
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## To avoid accidentally capturing the index of an unrelated section header for
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## checking the sh_link of the .symtab_shndx section, use the index of the
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## section immediately following the symbol table.
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# CHECK: Name: .symtab
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# CHECK-NEXT: Type: SHT_SYMTAB
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# CHECK: Index: [[#AFTERSYMTAB:]]
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# CHECK: Name: .symtab_shndx
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# CHECK-NEXT: Type: SHT_SYMTAB_SHNDX
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# CHECK-NEXT: Flags [ (0x0)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address: 0x0
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# CHECK-NEXT: Offset:
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## There should be #syms * EntrySize bytes.
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# CHECK-NEXT: Size: 262148
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# CHECK-NEXT: Link: [[#AFTERSYMTAB-1]]
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# CHECK-NEXT: Info: 0
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# CHECK-NEXT: AddressAlignment: 4
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# CHECK-NEXT: EntrySize: 4
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## Show that the sh_link of the first section header is the section header table
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## index. Also show that the last section is the .strtab.
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# CHECK: Index: [[#SHNUM-1]]
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# CHECK-NEXT: Name: .strtab
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## Show that the symbols with section indexes around the reserved range still
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## have the right section indexes afterwards.
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# CHECK: Section: s65279 (0xFEFF)
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# CHECK-NEXT: }
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## st_shndx == SHN_LORSERVE.
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# CHECK-NEXT: Symbol {
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# CHECK-NEXT: Name: sym65280 (
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# CHECK-NEXT: Value: 0x0
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# CHECK-NEXT: Size: 0
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# CHECK-NEXT: Binding: Local (0x0)
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# CHECK-NEXT: Type: None (0x0)
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# CHECK-NEXT: Other: 0
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# CHECK-NEXT: Section: s65280 (0xFF00)
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# CHECK-NEXT: }
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## st_shndx == SHN_ABS.
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# CHECK: Name: sym65521 (
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# CHECK-NEXT: Value: 0x0
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# CHECK-NEXT: Size: 0
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# CHECK-NEXT: Binding: Local (0x0)
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# CHECK-NEXT: Type: None (0x0)
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# CHECK-NEXT: Other: 0
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# CHECK-NEXT: Section: s65521 (0xFFF1)
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# CHECK-NEXT: }
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## st_shndx == SHN_COMMON.
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# CHECK-NEXT: Symbol {
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# CHECK-NEXT: Name: sym65522 (
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# CHECK-NEXT: Value: 0x0
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# CHECK-NEXT: Size: 0
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# CHECK-NEXT: Binding: Local (0x0)
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# CHECK-NEXT: Type: None (0x0)
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# CHECK-NEXT: Other: 0
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# CHECK-NEXT: Section: s65522 (0xFFF2)
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# CHECK-NEXT: }
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## st_shndx == SHN_XINDEX.
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# CHECK: Name: sym65535 (
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# CHECK-NEXT: Value: 0x0
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# CHECK-NEXT: Size: 0
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# CHECK-NEXT: Binding: Local (0x0)
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# CHECK-NEXT: Type: None (0x0)
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# CHECK-NEXT: Other: 0
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# CHECK-NEXT: Section: s65535 (0xFFFF)
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# CHECK-NEXT: }
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## st_shndx > SHN_XINDEX.
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# CHECK-NEXT: Symbol {
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# CHECK-NEXT: Name: sym65536 (
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# CHECK-NEXT: Value: 0x0
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# CHECK-NEXT: Size: 0
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# CHECK-NEXT: Binding: Local (0x0)
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# CHECK-NEXT: Type: None (0x0)
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# CHECK-NEXT: Other: 0
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# CHECK-NEXT: Section: s65536 (0x10000)
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# CHECK-NEXT: }
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# SYMS: Symbol table '.symtab' contains 65537 entries
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@ -3,7 +3,7 @@
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RUN: %python %p/../Inputs/ungzip.py %p/Inputs/many-sections.o.gz > %t.0
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RUN: echo 'foo' > %t
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RUN: llvm-objcopy -R .text -R s0 -R s1 -R s2 -R s3 -R s4 -R s5 -R s6 %t.0 %t2
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RUN: llvm-objcopy -R 's65[3-9][0-9][0-9]' -R 's6529[0-9]' -R 's652[89][0-9]' %t.0 %t2
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RUN: llvm-objcopy --add-section=.s0=%t --add-section=.s1=%t --add-section=.s2=%t %t2 %t2
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RUN: llvm-readobj --sections %t2 | FileCheck --check-prefix=SECS %s
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