# Check that LLD does not populate an executable file dynamic symbol table # by unnecessary symbols. # 1. bar.so defines T2 # 2. foo.so defines T1 and references T2 # 3. main.o reference T1 # 4. a.out dynamic table should contain T1 entry only # RUN: yaml2obj -format=elf -docnum 1 %s > %t-bar.o # RUN: yaml2obj -format=elf -docnum 2 %s > %t-foo.o # RUN: yaml2obj -format=elf -docnum 3 %s > %t-main.o # RUN: lld -flavor gnu -target mipsel -shared -o %t-bar.so %t-bar.o # RUN: lld -flavor gnu -target mipsel -shared -o %t-foo.so %t-foo.o %t-bar.so # RUN: lld -flavor gnu -target mipsel -e T0 -o %t.exe --as-needed \ # RUN: %t-main.o %t-foo.so %t-bar.so # RUN: llvm-readobj -dt -dynamic-table %t.exe | FileCheck %s # CHECK: DynamicSymbols [ # CHECK-NEXT: Symbol { # CHECK-NEXT: Name: @ (0) # CHECK-NEXT: Value: 0x0 # CHECK-NEXT: Size: 0 # CHECK-NEXT: Binding: Local (0x0) # CHECK-NEXT: Type: None (0x0) # CHECK-NEXT: Other: 0 # CHECK-NEXT: Section: Undefined (0x0) # CHECK-NEXT: } # CHECK-NEXT: Symbol { # CHECK-NEXT: Name: T1@ ({{.*}}) # CHECK-NEXT: Value: {{.*}} # CHECK-NEXT: Size: 0 # CHECK-NEXT: Binding: Global (0x1) # CHECK-NEXT: Type: Function (0x2) # CHECK-NEXT: Other: 8 # CHECK-NEXT: Section: Undefined (0x0) # CHECK-NEXT: } # CHECK-NEXT: ] # CHECK: 0x00000003 PLTGOT 0x401000 # CHECK-NEXT: 0x00000001 NEEDED SharedLibrary (dynsym-table-1.test.tmp-foo.so) # CHECK-NEXT: 0x00000000 NULL 0x0 # bar.o --- FileHeader: Class: ELFCLASS32 Data: ELFDATA2LSB Type: ET_REL Machine: EM_MIPS Flags: [EF_MIPS_PIC, EF_MIPS_ABI_O32, EF_MIPS_ARCH_32] Sections: - Name: .text Type: SHT_PROGBITS Flags: [ SHF_ALLOC, SHF_EXECINSTR ] AddressAlign: 0x04 Size: 0x08 Symbols: Global: - Name: T2 Type: STT_FUNC Section: .text Size: 0x08 # foo.o --- FileHeader: Class: ELFCLASS32 Data: ELFDATA2LSB Type: ET_REL Machine: EM_MIPS Flags: [EF_MIPS_PIC, EF_MIPS_ABI_O32, EF_MIPS_ARCH_32] Sections: - Name: .text Type: SHT_PROGBITS Flags: [ SHF_ALLOC, SHF_EXECINSTR ] AddressAlign: 0x04 Size: 0x08 - Name: .rel.text Type: SHT_REL Link: .symtab AddressAlign: 0x08 Info: .text Relocations: - Offset: 0 Symbol: T2 Type: R_MIPS_CALL16 Symbols: Global: - Name: T1 Type: STT_FUNC Section: .text Size: 0x08 - Name: T2 # main.o --- FileHeader: Class: ELFCLASS32 Data: ELFDATA2LSB Type: ET_REL Machine: EM_MIPS Flags: [EF_MIPS_CPIC, EF_MIPS_ABI_O32, EF_MIPS_ARCH_32] Sections: - Name: .text Type: SHT_PROGBITS Flags: [ SHF_ALLOC, SHF_EXECINSTR ] AddressAlign: 0x04 Size: 0x08 - Name: .rel.text Type: SHT_REL Link: .symtab AddressAlign: 0x08 Info: .text Relocations: - Offset: 0 Symbol: T1 Type: R_MIPS_32 Symbols: Global: - Name: T0 Type: STT_FUNC Section: .text Size: 0x08 - Name: T1 ...