[LinkerScript] Adding test cases for SECTIONS semantics
llvm-svn: 232404
This commit is contained in:
Rafael Auler
parent
4da7a29a11
commit
8dd680dcb1
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@ -0,0 +1,88 @@
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---
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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OSABI: ELFOSABI_GNU
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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: .text
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
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AddressAlign: 0x0000000000000010
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Content: 554889E5B000E800000000BF01000000BA0E0000004889C6E80000000031C05DC3
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- Name: .rela.text
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Type: SHT_RELA
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Link: .symtab
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AddressAlign: 0x0000000000000008
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Info: .text
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Relocations:
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- Offset: 0x0000000000000007
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Symbol: prog2
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Type: R_X86_64_PC32
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Addend: -4
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- Offset: 0x0000000000000019
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Symbol: write
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Type: R_X86_64_PC32
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Addend: -4
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- Name: .data
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Type: SHT_PROGBITS
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Flags: [ SHF_WRITE, SHF_ALLOC ]
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AddressAlign: 0x0000000000000004
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Content: ''
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- Name: .bss
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Type: SHT_NOBITS
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Flags: [ SHF_WRITE, SHF_ALLOC ]
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AddressAlign: 0x0000000000000004
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Content: ''
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- Name: .comment
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Type: SHT_PROGBITS
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Flags: [ SHF_MERGE, SHF_STRINGS ]
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AddressAlign: 0x0000000000000001
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Content: 00636C616E672076657273696F6E20332E372E302028687474703A2F2F6C6C766D2E6F72672F6769742F636C616E672E6769742036336134646334616430343938646139623934386330383263623735336430353735323938346638292028687474703A2F2F6C6C766D2E6F72672F6769742F6C6C766D2E67697420623838363135326664656538376564653738613565643965616638663664313839343033616266312900
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- Name: .note.GNU-stack
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Type: SHT_PROGBITS
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AddressAlign: 0x0000000000000001
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Content: ''
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- Name: .eh_frame
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC ]
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AddressAlign: 0x0000000000000008
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Content: 1400000000000000037A5200017810011B0C0708900100001C0000001C000000000000002100000000410E108602430D0600000000000000
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- Name: .rela.eh_frame
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Type: SHT_RELA
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Link: .symtab
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AddressAlign: 0x0000000000000008
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Info: .eh_frame
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Relocations:
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- Offset: 0x0000000000000020
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Symbol: .text
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Type: R_X86_64_PC32
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Symbols:
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Local:
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- Name: .text
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Type: STT_SECTION
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Section: .text
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- Name: .data
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Type: STT_SECTION
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Section: .data
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- Name: .bss
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Type: STT_SECTION
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Section: .bss
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- Name: .comment
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Type: STT_SECTION
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Section: .comment
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- Name: .note.GNU-stack
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Type: STT_SECTION
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Section: .note.GNU-stack
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- Name: .eh_frame
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Type: STT_SECTION
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Section: .eh_frame
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Global:
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- Name: main
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Type: STT_FUNC
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Section: .text
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Size: 0x0000000000000021
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- Name: prog2
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- Name: write
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...
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@ -0,0 +1,89 @@
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---
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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OSABI: ELFOSABI_GNU
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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: .text
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
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AddressAlign: 0x0000000000000010
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Content: 554889E548B800000000000000005DC3
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- Name: .rela.text
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Type: SHT_RELA
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Link: .symtab
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AddressAlign: 0x0000000000000008
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Info: .text
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Relocations:
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- Offset: 0x0000000000000006
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Symbol: .rodata.str1.1
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Type: R_X86_64_64
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- Name: .data
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Type: SHT_PROGBITS
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Flags: [ SHF_WRITE, SHF_ALLOC ]
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AddressAlign: 0x0000000000000004
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Content: ''
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- Name: .bss
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Type: SHT_NOBITS
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Flags: [ SHF_WRITE, SHF_ALLOC ]
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AddressAlign: 0x0000000000000004
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Content: ''
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- Name: .rodata.str1.1
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC, SHF_MERGE, SHF_STRINGS ]
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AddressAlign: 0x0000000000000001
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Content: 48656C6C6F2C20776F726C64210A00
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- Name: .comment
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Type: SHT_PROGBITS
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Flags: [ SHF_MERGE, SHF_STRINGS ]
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AddressAlign: 0x0000000000000001
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Content: 00636C616E672076657273696F6E20332E372E302028687474703A2F2F6C6C766D2E6F72672F6769742F636C616E672E6769742036336134646334616430343938646139623934386330383263623735336430353735323938346638292028687474703A2F2F6C6C766D2E6F72672F6769742F6C6C766D2E67697420623838363135326664656538376564653738613565643965616638663664313839343033616266312900
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- Name: .note.GNU-stack
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Type: SHT_PROGBITS
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AddressAlign: 0x0000000000000001
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Content: ''
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- Name: .eh_frame
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC ]
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AddressAlign: 0x0000000000000008
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Content: 1400000000000000037A5200017810011B0C0708900100001C0000001C000000000000001000000000410E108602430D0600000000000000
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- Name: .rela.eh_frame
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Type: SHT_RELA
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Link: .symtab
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AddressAlign: 0x0000000000000008
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Info: .eh_frame
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Relocations:
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- Offset: 0x0000000000000020
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Symbol: .text
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Type: R_X86_64_PC32
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Symbols:
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Local:
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- Name: .text
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Type: STT_SECTION
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Section: .text
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- Name: .data
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Type: STT_SECTION
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Section: .data
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- Name: .bss
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Type: STT_SECTION
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Section: .bss
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- Name: .rodata.str1.1
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Type: STT_SECTION
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Section: .rodata.str1.1
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- Name: .comment
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Type: STT_SECTION
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Section: .comment
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- Name: .note.GNU-stack
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Type: STT_SECTION
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Section: .note.GNU-stack
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- Name: .eh_frame
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Type: STT_SECTION
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Section: .eh_frame
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Global:
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- Name: prog2
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Type: STT_FUNC
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Section: .text
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Size: 0x0000000000000010
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...
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@ -0,0 +1,52 @@
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---
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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OSABI: ELFOSABI_GNU
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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: .text
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
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AddressAlign: 0x0000000000000004
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Content: B8010000000F05C3E800000000B83C0000000F05C3
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- Name: .rela.text
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Type: SHT_RELA
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Link: .symtab
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AddressAlign: 0x0000000000000008
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Info: .text
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Relocations:
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- Offset: 0x0000000000000009
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Symbol: main
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Type: R_X86_64_PC32
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Addend: -4
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- Name: .data
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Type: SHT_PROGBITS
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Flags: [ SHF_WRITE, SHF_ALLOC ]
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AddressAlign: 0x0000000000000004
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Content: ''
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- Name: .bss
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Type: SHT_NOBITS
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Flags: [ SHF_WRITE, SHF_ALLOC ]
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AddressAlign: 0x0000000000000004
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Content: ''
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Symbols:
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Local:
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- Name: .text
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Type: STT_SECTION
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Section: .text
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- Name: .data
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Type: STT_SECTION
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Section: .data
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- Name: .bss
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Type: STT_SECTION
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Section: .bss
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Global:
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- Name: _start
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Section: .text
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Value: 0x0000000000000008
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- Name: write
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Section: .text
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- Name: main
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...
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/*
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Tests a simple linker script that changes the order of output sections and
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also changes the address of output sections by using simple expressions.
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This test uses three X86-64 input objects, prog1.o, prog2.o and prog3.o,
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which were created with the following C or assembly code:
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*** prog1.o:
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(command line clang -c prog1.c -o prog1.o)
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const char *prog2();
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void write(int, const char *, int);
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int main() {
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write(1, prog2(), 14);
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}
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*** prog2.o:
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(command line clang -c prog2.c -o prog2.o)
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const char *prog2() {
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return "Hello, world!\n";
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}
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*** prog3.o:
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(command line clang -c prog3.S -o prog3.o)
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.globl write
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write:
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mov $1, %eax
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syscall
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ret
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.globl _start
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_start:
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call main
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mov $60, %eax
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syscall
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ret
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We use the following linker script for this test:
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*/
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ENTRY(_start)
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SECTIONS
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{
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. = 0x500000;
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.text : { prog1.o(.text) }
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.mystring : { prog2.o(.rodata.str1.1) }
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. = . + 0x6000;
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.text.2 : {prog3.o(.text) prog2.o(.text) }
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}
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/*
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RUN: mkdir -p %T
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RUN: yaml2obj -format=elf %p/Inputs/prog1.o.yaml -o=%T/prog1.o
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RUN: yaml2obj -format=elf %p/Inputs/prog2.o.yaml -o=%T/prog2.o
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RUN: yaml2obj -format=elf %p/Inputs/prog3.o.yaml -o=%T/prog3.o
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RUN: cd %T
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RUN: lld -flavor gnu -target x86_64 -T %s prog1.o prog2.o prog3.o \
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RUN: -static -o %t1
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RUN: llvm-readobj -s %t1 | FileCheck -check-prefix CHECKSECTIONS %s
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CHECKSECTIONS: Index: 1
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CHECKSECTIONS: Name: .text
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CHECKSECTIONS: Address: 0x500000
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CHECKSECTIONS: Size: 33
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CHECKSECTIONS: Index: 2
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CHECKSECTIONS: Name: .mystring
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CHECKSECTIONS: Address: 0x500021
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CHECKSECTIONS: Size: 15
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CHECKSECTIONS: Index: 3
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CHECKSECTIONS: Name: .text.2
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CHECKSECTIONS: Address: 0x506030
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CHECKSECTIONS: Size: 48
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RUN: llvm-readobj -symbols %t1 | FileCheck -check-prefix CHECKSYMS %s
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CHECKSYMS: Name: main
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CHECKSYMS-NEXT: Value: 0x500000
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CHECKSYMS: Name: write
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CHECKSYMS-NEXT: Value: 0x506030
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CHECKSYMS: Name: _start
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CHECKSYMS-NEXT: Value: 0x506038
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CHECKSYMS: Name: prog2
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CHECKSYMS-NEXT: Value: 0x506050
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*/
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@ -0,0 +1,88 @@
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/*
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Tests a linker script that uses the SECTIONS command with rules containing
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wildcards and simple SORT directives. It also tests that the linker script
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evaluates the expressions in the same order as the one written in the script
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file.
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This test uses three X86-64 input objects, prog1.o, prog2.o and prog3.o,
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which were created with the following C or assembly code:
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*** prog1.o:
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(command line clang -c prog1.c -o prog1.o)
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const char *prog2();
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void write(int, const char *, int);
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int main() {
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write(1, prog2(), 14);
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}
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*** prog2.o:
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(command line clang -c prog2.c -o prog2.o)
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const char *prog2() {
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return "Hello, world!\n";
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}
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*** prog3.o:
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(command line clang -c prog3.S -o prog3.o)
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.globl write
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write:
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mov $1, %eax
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syscall
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ret
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.globl _start
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_start:
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call main
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mov $60, %eax
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syscall
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ret
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We use the following linker script for this test:
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*/
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ENTRY(_start)
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SECTIONS
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{
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my_start_addr = 0x500000;
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my_symbol = my_start_addr;
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. = my_symbol;
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.foo : { SORT(*)(.text .rodata*) }
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}
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/*
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RUN: mkdir -p %T
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RUN: yaml2obj -format=elf %p/Inputs/prog1.o.yaml -o=%T/p1.o
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RUN: yaml2obj -format=elf %p/Inputs/prog2.o.yaml -o=%T/p2.o
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RUN: yaml2obj -format=elf %p/Inputs/prog3.o.yaml -o=%T/p3.o
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RUN: cd %T
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RUN: lld -flavor gnu -target x86_64 -T %s p1.o p2.o p3.o \
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RUN: -static -o %t1
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RUN: llvm-readobj -s %t1 | FileCheck -check-prefix CHECKSECTIONS %s
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CHECKSECTIONS: Index: 1
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CHECKSECTIONS: Name: .foo
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CHECKSECTIONS: Address: 0x500000
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CHECKSECTIONS: Size: 101
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RUN: llvm-readobj -symbols %t1 | FileCheck -check-prefix CHECKSYMS %s
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CHECKSYMS: Name: main
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CHECKSYMS-NEXT: Value: 0x500000
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CHECKSYMS: Name: prog2
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CHECKSYMS-NEXT: Value: 0x500030
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CHECKSYMS: Name: write
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CHECKSYMS-NEXT: Value: 0x500050
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CHECKSYMS: Name: _start
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CHECKSYMS-NEXT: Value: 0x500058
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*/
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