| ## Test --add-symbol creates .symtab if it does not exist. |
| |
| # RUN: yaml2obj --docnum=1 %s -o %t |
| |
| ## If a non-SHF_ALLOC SHT_STRTAB exists but SHT_SYMTAB does not, create .symtab |
| ## and set its sh_link to the SHT_STRTAB. |
| # RUN: llvm-objcopy --remove-section=.symtab %t %t.no.symtab |
| # RUN: llvm-objcopy --add-symbol='abs1=1' %t.no.symtab %t.add.both |
| # RUN: llvm-readobj -S %t.add.both | FileCheck --check-prefix=SEC %s |
| # RUN: llvm-readelf -s %t.add.both | FileCheck %s |
| |
| # SEC: Index: 1 |
| # SEC-NEXT: Name: .strtab |
| # SEC-NEXT: Type: SHT_STRTAB |
| # SEC: Index: 2 |
| # SEC-NEXT: Name: .shstrtab |
| # SEC-NEXT: Type: SHT_STRTAB |
| # SEC: Index: 3 |
| # SEC-NEXT: Name: .symtab |
| # SEC-NEXT: Type: SHT_SYMTAB |
| # SEC-NOT: } |
| # SEC: Link: 1 |
| |
| # CHECK: 0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND |
| # CHECK-NEXT: 1: 0000000000000001 0 NOTYPE GLOBAL DEFAULT ABS abs1 |
| |
| ## Don't create .symtab if --add-symbol is not specified. |
| # RUN: llvm-objcopy --remove-section=.symtab --remove-section=.strtab %t %t.no |
| # RUN: llvm-objcopy %t.no %t.nop |
| # RUN: llvm-readobj -S %t.nop | FileCheck --implicit-check-not=.symtab --implicit-check-not=.strtab /dev/null |
| |
| ## Reuse the existing .shstrtab (section names) for symbol names. |
| ## This may look strange but it works. |
| # RUN: llvm-objcopy --add-symbol='abs1=1' %t.no %t.add.symtab |
| # RUN: llvm-readobj -S %t.add.symtab | FileCheck --check-prefix=SEC2 %s --implicit-check-not=.strtab |
| # RUN: llvm-readelf -s %t.add.symtab | FileCheck %s |
| |
| # SEC2: Index: 1 |
| # SEC2-NEXT: Name: .shstrtab |
| # SEC2-NEXT: Type: SHT_STRTAB |
| # SEC2: Index: 2 |
| # SEC2-NEXT: Name: .symtab |
| # SEC2-NEXT: Type: SHT_SYMTAB |
| # SEC2-NOT: } |
| # SEC2: Link: 1 |
| |
| --- !ELF |
| FileHeader: |
| Class: ELFCLASS64 |
| Data: ELFDATA2LSB |
| Type: ET_REL |
| Machine: EM_X86_64 |
| Sections: |
| - Name: .strtab |
| Type: SHT_STRTAB |
| - Name: .shstrtab |
| Type: SHT_STRTAB |
| Symbols: [] |
| ... |
| |
| ## Check that we prefer the string table that is not the section header string table. |
| # RUN: yaml2obj --docnum=2 %s -o %t2 |
| # RUN: llvm-objcopy --remove-section=.symtab --remove-section=.strtab %t2 %t2.no |
| # RUN: llvm-objcopy --add-symbol='abs1=1' %t2.no %t2.add.symtab |
| # RUN: llvm-readobj -S %t2.add.symtab | FileCheck --check-prefix=SEC2 %s |
| # RUN: llvm-readelf -s %t2.add.symtab | FileCheck %s |
| |
| --- !ELF |
| FileHeader: |
| Class: ELFCLASS64 |
| Data: ELFDATA2LSB |
| Type: ET_REL |
| Machine: EM_X86_64 |
| Sections: |
| # .shstrtab is reordered before .strtab |
| - Name: .shstrtab |
| Type: SHT_STRTAB |
| - Name: .strtab |
| Type: SHT_STRTAB |
| Symbols: [] |
| ... |
| |
| ## Check the created .symtab does not link to .dynstr (SHF_ALLOC). |
| # RUN: yaml2obj --docnum=3 %s -o %t3 |
| # RUN: llvm-objcopy --remove-section=.symtab --remove-section=.strtab %t3 %t3.no |
| # RUN: llvm-objcopy --add-symbol='abs1=1' %t3.no %t3.not.dynstr |
| # RUN: llvm-readobj -S %t3.not.dynstr | FileCheck --check-prefix=SEC3 %s |
| |
| # SEC3: Index: 3 |
| # SEC3-NEXT: Name: .shstrtab |
| # SEC3-NEXT: Type: SHT_STRTAB |
| # SEC3: Name: .symtab |
| # SEC3-NEXT: Type: SHT_SYMTAB |
| # SEC3-NOT: } |
| # SEC3: Link: 3 |
| |
| --- !ELF |
| FileHeader: |
| Class: ELFCLASS64 |
| Data: ELFDATA2LSB |
| Type: ET_DYN |
| Machine: EM_X86_64 |
| DynamicSymbols: |
| - Name: dummy |
| Binding: STB_GLOBAL |
| Symbols: [] |
| ... |
| |
| ## Check the created .symtab is correct when there are program headers. |
| # RUN: yaml2obj --docnum=4 %s -o %t4 |
| # RUN: llvm-objcopy %t4 %t4.add --add-symbol foo=1234 |
| # RUN: llvm-readelf -s %t4.add | FileCheck --check-prefix=SEC4 %s |
| |
| # SEC4: 0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND |
| # SEC4-NEXT: 1: 00000000000004d2 0 NOTYPE GLOBAL DEFAULT ABS foo |
| |
| --- !ELF |
| FileHeader: |
| Class: ELFCLASS64 |
| Data: ELFDATA2LSB |
| Type: ET_DYN |
| Machine: EM_X86_64 |
| Sections: |
| - Name: .foo |
| Type: SHT_PROGBITS |
| ProgramHeaders: |
| - Type: PT_LOAD |
| FirstSec: .foo |
| LastSec: .foo |
| ... |