## Show that llvm-objcopy can replace the symbol table with a new one. # RUN: yaml2obj %s -o %t # RUN: llvm-objcopy -R .symtab --add-symbol newsym=1234 %t %t2 # RUN: llvm-readelf -S -s %t2 | FileCheck %s --match-full-lines # CHECK: There are 5 section headers, starting at offset {{.+}}: # CHECK: [Nr] Name Type Address Off Size ES Flg Lk Inf Al # CHECK-NEXT: [ 0] NULL 0000000000000000 {{.+}} 000000 00 0 0 0 # CHECK-NEXT: [ 1] .text PROGBITS 0000000000001000 {{.+}} 000040 00 AX 0 0 16 # CHECK-NEXT: [ 2] .strtab STRTAB 0000000000000000 {{.+}} 000001 00 0 0 1 # CHECK-NEXT: [ 3] .shstrtab STRTAB 0000000000000000 {{.+}} 000028 00 0 0 1 # CHECK-NEXT: [ 4] .symtab SYMTAB 0000000000000000 {{.+}} 000030 18 3 1 8 # CHECK: Symbol table '.symtab' contains 2 entries: # CHECK-NEXT: Num: Value Size Type Bind Vis Ndx Name # CHECK-NEXT: 0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND # CHECK-NEXT: 1: 00000000000004d2 0 NOTYPE GLOBAL DEFAULT ABS newsym ## --set-section-flags works for newly created .symtab, which GNU objcopy does not do. # RUN: llvm-objcopy -R .symtab --add-symbol newsym=1234 --set-section-flags .symtab=readonly,exclude %t %t3 # RUN: llvm-readelf -S %t3 | FileCheck %s --check-prefix=CHECK2 # CHECK2: [ 4] .symtab SYMTAB 0000000000000000 {{.+}} 000030 18 E 3 1 8 --- !ELF FileHeader: Class: ELFCLASS64 Data: ELFDATA2LSB Type: ET_DYN Machine: EM_X86_64 Sections: - Name: .text Type: SHT_PROGBITS Flags: [ SHF_ALLOC, SHF_EXECINSTR ] Address: 0x1000 AddressAlign: 0x0000000000000010 Size: 64 Symbols: - Name: foo Type: STT_FUNC Section: .text Value: 0x1000 Size: 8 - Name: bar Type: STT_FUNC Section: .text Value: 0x1008 Size: 8 - Name: baz Type: STT_FUNC Section: .text Value: 0x1010 Size: 8