| ## Test how llvm-readobj/llvm-readelf tools handle invalid SHT_GNU_versym sections. |
| |
| ## Check that we report a warning when sh_link references a non-existent section. |
| |
| # RUN: yaml2obj --docnum=1 %s -o %t1 |
| # RUN: llvm-readelf -V %t1 2>&1 | FileCheck -DFILE=%t1 %s --check-prefix=GNU-INVALID-LINK |
| # RUN: llvm-readobj -V %t1 2>&1 | FileCheck -DFILE=%t1 %s --check-prefix=LLVM-INVALID-LINK |
| |
| # GNU-INVALID-LINK: Version symbols section '.gnu.version' contains 0 entries: |
| # GNU-INVALID-LINK-NEXT: warning: '[[FILE]]': invalid section linked to SHT_GNU_versym section with index 1: invalid section index: 255 |
| # GNU-INVALID-LINK-NEXT: Addr: 0000000000000000 Offset: 0x000040 Link: 255 (<corrupt>) |
| |
| # LLVM-INVALID-LINK: VersionSymbols [ |
| # LLVM-INVALID-LINK-NEXT: warning: '[[FILE]]': invalid section linked to SHT_GNU_versym section with index 1: invalid section index: 255 |
| # LLVM-INVALID-LINK-NEXT: ] |
| |
| --- !ELF |
| FileHeader: |
| Class: ELFCLASS64 |
| Data: ELFDATA2LSB |
| Type: ET_EXEC |
| Machine: EM_X86_64 |
| Sections: |
| - Name: .gnu.version |
| Type: SHT_GNU_versym |
| Link: 0xFF |
| Entries: [ ] |
| |
| ## Check that we report a warning when the sh_link field of a SHT_GNU_versym section does not reference |
| ## a dynamic symbol table section. |
| |
| # RUN: yaml2obj --docnum=2 %s -o %t2 |
| # RUN: llvm-readelf -V %t2 2>&1 | FileCheck -DFILE=%t2 %s --check-prefix=INVALID-SYMBOL-TABLE-GNU |
| # RUN: llvm-readobj -V %t2 2>&1 | FileCheck -DFILE=%t2 %s --check-prefix=INVALID-SYMBOL-TABLE-LLVM |
| |
| # INVALID-SYMBOL-TABLE-GNU: Version symbols section '.gnu.version' contains 1 entries: |
| # INVALID-SYMBOL-TABLE-GNU-NEXT: Addr: 0000000000000000 Offset: 0x000040 Link: 0 () |
| # INVALID-SYMBOL-TABLE-GNU-NEXT: warning: '[[FILE]]': invalid section linked to SHT_GNU_versym section with index 1: expected SHT_DYNSYM, but got SHT_NULL |
| # INVALID-SYMBOL-TABLE-GNU-NEXT: 000: 0 (*local*) |
| |
| # INVALID-SYMBOL-TABLE-LLVM: VersionSymbols [ |
| # INVALID-SYMBOL-TABLE-LLVM-NEXT: warning: '[[FILE]]': invalid section linked to SHT_GNU_versym section with index 1: expected SHT_DYNSYM, but got SHT_NULL |
| # INVALID-SYMBOL-TABLE-LLVM-NEXT: ] |
| |
| --- !ELF |
| FileHeader: |
| Class: ELFCLASS64 |
| Data: ELFDATA2LSB |
| Type: ET_EXEC |
| Machine: EM_X86_64 |
| Sections: |
| - Name: .gnu.version |
| Type: SHT_GNU_versym |
| Link: 0x0 |
| Entries: [ 0 ] |
| |
| ## Check we report a warning when something is wrong with a string table linked to a symbol table that |
| ## is linked with SHT_GNU_versym. In this case we are unable to produce LLVM style output, |
| ## but GNU style is fine because it does not need that string table. |
| |
| # RUN: yaml2obj --docnum=3 %s -o %t3 |
| # RUN: llvm-readelf -V %t3 2>&1 | FileCheck -DFILE=%t3 %s --check-prefix=INVALID-STRING-TABLE-GNU |
| # RUN: llvm-readobj -V %t3 2>&1 | FileCheck -DFILE=%t3 %s --check-prefix=INVALID-STRING-TABLE-LLVM |
| |
| # INVALID-STRING-TABLE-GNU: Version symbols section '.gnu.version' contains 1 entries: |
| # INVALID-STRING-TABLE-GNU-NEXT: Addr: 0000000000000000 Offset: 0x000040 Link: 3 (.dynsym) |
| # INVALID-STRING-TABLE-GNU-NEXT: warning: '[[FILE]]': can't get a string table for the symbol table linked to SHT_GNU_versym section with index 1: invalid string table linked to SHT_DYNSYM section with index 3: invalid sh_type for string table section [index 2]: expected SHT_STRTAB, but got SHT_NULL |
| # INVALID-STRING-TABLE-GNU-NEXT: 000: 0 (*local*) |
| |
| # INVALID-STRING-TABLE-LLVM: VersionSymbols [ |
| # INVALID-STRING-TABLE-LLVM-NEXT: warning: '[[FILE]]': can't get a string table for the symbol table linked to SHT_GNU_versym section with index 1: invalid string table linked to SHT_DYNSYM section with index 3: invalid sh_type for string table section [index 2]: expected SHT_STRTAB, but got SHT_NULL |
| # INVALID-STRING-TABLE-LLVM-NEXT: ] |
| |
| --- !ELF |
| FileHeader: |
| Class: ELFCLASS64 |
| Data: ELFDATA2LSB |
| Type: ET_EXEC |
| Machine: EM_X86_64 |
| Sections: |
| - Name: .gnu.version |
| Type: SHT_GNU_versym |
| Link: .dynsym |
| Entries: [ 0 ] |
| - Name: .dynstr |
| Type: SHT_NULL |
| DynamicSymbols: [] |
| |
| ## Check we report a warning when a SHT_GNU_versym section is not correctly aligned in memory. |
| |
| # RUN: yaml2obj --docnum=4 %s -o %t4 |
| # RUN: llvm-readelf -V %t4 2>&1 | FileCheck -DFILE=%t4 %s --check-prefix=MISALIGNED-GNU |
| # RUN: llvm-readobj -V %t4 2>&1 | FileCheck -DFILE=%t4 %s --check-prefix=MISALIGNED-LLVM |
| |
| # MISALIGNED-GNU: Version symbols section '.gnu.version' contains 0 entries: |
| # MISALIGNED-GNU-NEXT: Addr: 0000000000000000 Offset: 0x00ffff Link: 0 () |
| # MISALIGNED-GNU-NEXT: warning: '[[FILE]]': the SHT_GNU_versym section with index 1 is misaligned |
| |
| # MISALIGNED-LLVM: VersionSymbols [ |
| # MISALIGNED-LLVM-NEXT: warning: '[[FILE]]': the SHT_GNU_versym section with index 1 is misaligned |
| # MISALIGNED-LLVM-NEXT: ] |
| |
| --- !ELF |
| FileHeader: |
| Class: ELFCLASS64 |
| Data: ELFDATA2LSB |
| Type: ET_EXEC |
| Machine: EM_X86_64 |
| Sections: |
| - Name: .gnu.version |
| Type: SHT_GNU_versym |
| Entries: [ ] |
| ShOffset: 0xffff |
| |
| ## Check we report a warning when a SHT_GNU_versym section has an invalid entry size. |
| |
| # RUN: yaml2obj --docnum=5 %s -o %t5 |
| # RUN: llvm-readelf -V --dyn-syms %t5 2>&1 | FileCheck -DFILE=%t5 %s --check-prefix=INVALID-ENT-SIZE-GNU |
| # RUN: llvm-readobj -V --dyn-syms %t5 2>&1 | FileCheck -DFILE=%t5 %s --check-prefix=INVALID-ENT-SIZE-LLVM |
| |
| # INVALID-ENT-SIZE-GNU: Symbol table '.dynsym' contains 2 entries: |
| # INVALID-ENT-SIZE-GNU-NEXT: Num: Value Size Type Bind Vis Ndx Name |
| # INVALID-ENT-SIZE-GNU-NEXT: warning: '[[FILE]]': section [index 1] has invalid sh_entsize: expected 2, but got 3 |
| # INVALID-ENT-SIZE-GNU-NEXT: 0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND @<corrupt> |
| # INVALID-ENT-SIZE-GNU-NEXT: 1: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND foo@<corrupt> |
| # INVALID-ENT-SIZE-GNU: Version symbols section '.gnu.version' contains 1 entries: |
| # INVALID-ENT-SIZE-GNU-NEXT: Addr: 0000000000000000 Offset: 0x000040 Link: 0 () |
| # INVALID-ENT-SIZE-GNU-NEXT: warning: '[[FILE]]': cannot read content of SHT_GNU_versym section with index 1: section [index 1] has an invalid sh_entsize: 3 |
| |
| # INVALID-ENT-SIZE-LLVM: DynamicSymbols [ |
| # INVALID-ENT-SIZE-LLVM-NEXT: warning: '[[FILE]]': section [index 1] has invalid sh_entsize: expected 2, but got 3 |
| # INVALID-ENT-SIZE-LLVM-NEXT: Symbol { |
| # INVALID-ENT-SIZE-LLVM-NEXT: Name: @<corrupt> (0) |
| # INVALID-ENT-SIZE-LLVM-NEXT: Value: 0x0 |
| # INVALID-ENT-SIZE-LLVM-NEXT: Size: 0 |
| # INVALID-ENT-SIZE-LLVM-NEXT: Binding: Local (0x0) |
| # INVALID-ENT-SIZE-LLVM-NEXT: Type: None (0x0) |
| # INVALID-ENT-SIZE-LLVM-NEXT: Other: 0 |
| # INVALID-ENT-SIZE-LLVM-NEXT: Section: Undefined (0x0) |
| # INVALID-ENT-SIZE-LLVM-NEXT: } |
| # INVALID-ENT-SIZE-LLVM-NEXT: Symbol { |
| # INVALID-ENT-SIZE-LLVM-NEXT: Name: foo@<corrupt> (1) |
| # INVALID-ENT-SIZE-LLVM-NEXT: Value: 0x0 |
| # INVALID-ENT-SIZE-LLVM-NEXT: Size: 0 |
| # INVALID-ENT-SIZE-LLVM-NEXT: Binding: Local (0x0) |
| # INVALID-ENT-SIZE-LLVM-NEXT: Type: None (0x0) |
| # INVALID-ENT-SIZE-LLVM-NEXT: Other: 0 |
| # INVALID-ENT-SIZE-LLVM-NEXT: Section: Undefined (0x0) |
| # INVALID-ENT-SIZE-LLVM-NEXT: } |
| # INVALID-ENT-SIZE-LLVM-NEXT: ] |
| # INVALID-ENT-SIZE-LLVM: VersionSymbols [ |
| # INVALID-ENT-SIZE-LLVM-NEXT: warning: '[[FILE]]': cannot read content of SHT_GNU_versym section with index 1: section [index 1] has an invalid sh_entsize: 3 |
| # INVALID-ENT-SIZE-LLVM-NEXT: ] |
| |
| --- !ELF |
| FileHeader: |
| Class: ELFCLASS64 |
| Data: ELFDATA2LSB |
| Type: ET_EXEC |
| Machine: EM_X86_64 |
| Sections: |
| - Name: .gnu.version |
| Type: SHT_GNU_versym |
| Entries: [ 0 ] |
| EntSize: 3 |
| DynamicSymbols: |
| - Name: foo |
| |
| ## Check we report a warning when the number of version entries does not match the number of symbols in the associated symbol table. |
| |
| # RUN: yaml2obj --docnum=6 %s -o %t6 |
| # RUN: llvm-readelf -V %t6 2>&1 | FileCheck -DFILE=%t6 %s --check-prefix=SYMBOLS-NUM-MISMATCH-GNU |
| # RUN: llvm-readobj -V %t6 2>&1 | FileCheck -DFILE=%t6 %s --check-prefix=SYMBOLS-NUM-MISMATCH-LLVM |
| |
| # SYMBOLS-NUM-MISMATCH-GNU: Version symbols section '.gnu.version' contains 2 entries: |
| # SYMBOLS-NUM-MISMATCH-GNU-NEXT: Addr: 0000000000000000 Offset: 0x000040 Link: 2 (.dynsym) |
| # SYMBOLS-NUM-MISMATCH-GNU-NEXT: warning: '[[FILE]]': SHT_GNU_versym section with index 1: the number of entries (2) does not match the number of symbols (3) in the symbol table with index 2 |
| # SYMBOLS-NUM-MISMATCH-GNU-NEXT: 000: 0 (*local*) 1 (*global*) |
| |
| # SYMBOLS-NUM-MISMATCH-LLVM: VersionSymbols [ |
| # SYMBOLS-NUM-MISMATCH-LLVM-NEXT: warning: '[[FILE]]': SHT_GNU_versym section with index 1: the number of entries (2) does not match the number of symbols (3) in the symbol table with index 2 |
| # SYMBOLS-NUM-MISMATCH-LLVM-NEXT: ] |
| |
| --- !ELF |
| FileHeader: |
| Class: ELFCLASS64 |
| Data: ELFDATA2LSB |
| Type: ET_EXEC |
| Machine: EM_X86_64 |
| Sections: |
| - Name: .gnu.version |
| Type: SHT_GNU_versym |
| Entries: [ 0, 1 ] |
| Link: .dynsym |
| DynamicSymbols: |
| - Name: foo |
| - Name: bar |
| |
| ## Check we can dump a SHT_GNU_versym section when it is linked to a custom dynamic symbol |
| ## table that is not called ".dynsym". |
| |
| # RUN: yaml2obj --docnum=7 %s -o %t7 |
| # RUN: llvm-readelf -V %t7 2>&1 | FileCheck -DFILE=%t7 %s --check-prefix=CUSTOM-SYMTAB-GNU |
| # RUN: llvm-readobj -V %t7 2>&1 | FileCheck -DFILE=%t7 %s --check-prefix=CUSTOM-SYMTAB-LLVM |
| |
| # CUSTOM-SYMTAB-GNU: Version symbols section '.gnu.version' contains 1 entries: |
| # CUSTOM-SYMTAB-GNU-NEXT: Addr: 0000000000000000 Offset: 0x000040 Link: 2 (.foo.dynsym) |
| # CUSTOM-SYMTAB-GNU-NEXT: 000: 0 (*local*) |
| |
| # CUSTOM-SYMTAB-LLVM: VersionSymbols [ |
| # CUSTOM-SYMTAB-LLVM-NEXT: Symbol { |
| # CUSTOM-SYMTAB-LLVM-NEXT: Version: 0 |
| # CUSTOM-SYMTAB-LLVM-NEXT: Name: |
| # CUSTOM-SYMTAB-LLVM-NEXT: } |
| # CUSTOM-SYMTAB-LLVM-NEXT: ] |
| |
| --- !ELF |
| FileHeader: |
| Class: ELFCLASS64 |
| Data: ELFDATA2LSB |
| Type: ET_EXEC |
| Machine: EM_X86_64 |
| Sections: |
| - Name: .gnu.version |
| Type: SHT_GNU_versym |
| Link: .foo.dynsym |
| Entries: [ 0 ] |
| ## A custom empty dynamic symbol table with a null entry. |
| - Name: .foo.dynsym |
| Type: SHT_DYNSYM |
| Link: .dynstr |
| EntSize: 24 |
| Size: 24 |
| DynamicSymbols: |
| - Name: foo |
| - Name: bar |
| |
| ## Version index in a SHT_GNU_versym section overflows the version map. |
| ## Check we report it when trying to dump dynamic symbols. |
| |
| # RUN: yaml2obj %s --docnum=8 -o %t8 |
| # RUN: llvm-readobj --dyn-syms %t8 2>&1 \ |
| # RUN: | FileCheck -DFILE=%t8 --implicit-check-not=warning --check-prefix=VERSION-OVERFLOW-LLVM %s |
| # RUN: llvm-readelf --dyn-syms %t8 2>&1 \ |
| # RUN: | FileCheck -DFILE=%t8 --implicit-check-not=warning --check-prefix=VERSION-OVERFLOW-GNU %s |
| |
| # VERSION-OVERFLOW-LLVM: DynamicSymbols [ |
| # VERSION-OVERFLOW-LLVM-NEXT: warning: '[[FILE]]': SHT_GNU_versym section refers to a version index 255 which is missing |
| # VERSION-OVERFLOW-LLVM-NEXT: Symbol { |
| # VERSION-OVERFLOW-LLVM-NEXT: Name: @<corrupt> (0) |
| # VERSION-OVERFLOW-LLVM: warning: '[[FILE]]': SHT_GNU_versym section refers to a version index 254 which is missing |
| # VERSION-OVERFLOW-LLVM-NEXT: Symbol { |
| # VERSION-OVERFLOW-LLVM-NEXT: Name: foo@<corrupt> (5) |
| # VERSION-OVERFLOW-LLVM: Symbol { |
| # VERSION-OVERFLOW-LLVM-NEXT: Name: bar@<corrupt> (1) |
| |
| # VERSION-OVERFLOW-GNU: Symbol table '.dynsym' contains 3 entries: |
| # VERSION-OVERFLOW-GNU-NEXT: Num: Value Size Type Bind Vis Ndx Name |
| # VERSION-OVERFLOW-GNU-NEXT: warning: '[[FILE]]': SHT_GNU_versym section refers to a version index 255 which is missing |
| # VERSION-OVERFLOW-GNU-NEXT: 0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND @<corrupt> |
| # VERSION-OVERFLOW-GNU-NEXT: warning: '[[FILE]]': SHT_GNU_versym section refers to a version index 254 which is missing |
| # VERSION-OVERFLOW-GNU-NEXT: 1: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND foo@<corrupt> |
| # VERSION-OVERFLOW-GNU-NEXT: 2: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND bar@<corrupt |
| |
| --- !ELF |
| FileHeader: |
| Class: ELFCLASS64 |
| Data: ELFDATA2LSB |
| Type: ET_DYN |
| Machine: EM_X86_64 |
| Sections: |
| - Name: .gnu.version |
| Type: SHT_GNU_versym |
| Entries: [ 0xFF, 0xFE, 0xFF ] |
| DynamicSymbols: |
| - Name: foo |
| - Name: bar |
