## Here we simulate an object with more than ~65k sections and check how we dump it. ## When an ELF object has SHN_LORESERVE (0xff00) or more sections, its e_shnum field ## should be zero and sh_size of the section header at index 0 is used ## to store the value. If the section name string table section index is ## greater than or equal to SHN_LORESERVE, then e_shstrndx field ## should have the value of SHN_XINDEX and sh_link of the section header ## at index 0 is used to store the value. # RUN: yaml2obj --docnum=1 %s -o %t1 # RUN: llvm-readelf --file-headers -S %t1 | FileCheck %s --check-prefix=GNU1 # GNU1: Number of section headers: 0 (3) # GNU1: Section header string table index: 65535 (2) # GNU1: There are 3 section headers, starting at offset 0x58 # RUN: llvm-readobj --file-headers %t1 | FileCheck %s --check-prefix=LLVM1 # LLVM1: SectionHeaderCount: 0 (3) # LLVM1: StringTableSectionIndex: 65535 (2) --- !ELF FileHeader: Class: ELFCLASS64 Data: ELFDATA2LSB Type: ET_REL EShNum: 0 EShStrNdx: 0xffff ## SHN_XINDEX Sections: - Type: SHT_NULL Link: .shstrtab Size: 0x3 ## Another case is when e_shoff field set to zero, but not e_shstrndx. ## We want to show that this corrupt case is handled correctly. # RUN: yaml2obj --docnum=2 %s -o %t2 # RUN: llvm-readelf --file-headers --sections %t2 2>&1 | \ # RUN: FileCheck %s -DFILE=%t2 --check-prefix=GNU2 # GNU2: Number of section headers: 0 # GNU2: Section header string table index: 65535 (corrupt: out of range) # GNU2: There are 0 section headers, starting at offset 0x0: # GNU2-EMPTY: # GNU2-NEXT: Section Headers: # GNU2-NEXT: [Nr] Name Type Address Off Size ES Flg Lk Inf Al # GNU2-NEXT: warning: '[[FILE]]': e_shstrndx == SHN_XINDEX, but the section header table is empty # GNU2-NEXT: Key to Flags: # RUN: llvm-readobj --file-headers --sections %t2 | \ # RUN: FileCheck %s --check-prefix=LLVM2 --implicit-check-not="warning:" # LLVM2: SectionHeaderCount: 0 # LLVM2: StringTableSectionIndex: 65535 (corrupt: out of range) # LLVM2-NEXT: } # LLVM2-NEXT: Sections [ # LLVM2-NEXT: ] --- !ELF FileHeader: Class: ELFCLASS64 Data: ELFDATA2LSB Type: ET_REL EShOff: 0 EShNum: 0 EShStrNdx: 0xffff ## SHN_XINDEX Sections: - Type: SHT_NULL Link: .shstrtab Size: 0x3