Index: ELF/Writer.cpp =================================================================== --- ELF/Writer.cpp +++ ELF/Writer.cpp @@ -774,7 +774,7 @@ // need these symbols, since IRELATIVE relocs are resolved through GOT // and PLT. For details, see http://www.airs.com/blog/archives/403. template void Writer::addRelIpltSymbols() { - if (InX::DynSymTab) + if (!Config->Static) return; StringRef S = Config->IsRela ? "__rela_iplt_start" : "__rel_iplt_start"; addOptionalRegular(S, In::RelaIplt, 0, STV_HIDDEN, STB_WEAK); Index: test/ELF/gnu-ifunc-dynsym.s =================================================================== --- /dev/null +++ test/ELF/gnu-ifunc-dynsym.s @@ -0,0 +1,153 @@ +// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o +// RUN: ld.lld -static -export-dynamic %t.o -o %tout +// RUN: llvm-objdump -d %tout | FileCheck %s --check-prefix=DISASM +// RUN: llvm-readobj -r -symbols -sections %tout | FileCheck %s +// REQUIRES: x86 + +// CHECK: Sections [ +// CHECK: Section { +// CHECK: Index: 1 +// CHECK-NEXT: Name: .dynsym +// CHECK-NEXT: Type: SHT_DYNSYM +// CHECK-NEXT: Flags [ +// CHECK-NEXT: SHF_ALLOC +// CHECK-NEXT: ] +// CHECK-NEXT: Address: 0x2001C8 +// CHECK-NEXT: Offset: 0x1C8 +// CHECK-NEXT: Size: 96 +// CHECK-NEXT: Link: 3 +// CHECK-NEXT: Info: 1 +// CHECK-NEXT: AddressAlignment: 8 +// CHECK-NEXT: EntrySize: 24 +// CHECK-NEXT: } +// CHECK: Section { +// CHECK: Index: 4 +// CHECK-NEXT: Name: .rela.plt +// CHECK-NEXT: Type: SHT_RELA +// CHECK-NEXT: Flags [ +// CHECK-NEXT: SHF_ALLOC +// CHECK-NEXT: ] +// CHECK-NEXT: Address: [[RELA:.*]] +// CHECK-NEXT: Offset: 0x260 +// CHECK-NEXT: Size: 48 +// CHECK-NEXT: Link: 1 +// CHECK-NEXT: Info: 0 +// CHECK-NEXT: AddressAlignment: 8 +// CHECK-NEXT: EntrySize: 24 +// CHECK-NEXT: } +// CHECK: Relocations [ +// CHECK-NEXT: Section ({{.*}}) .rela.plt { +// CHECK-NEXT: 0x202000 R_X86_64_IRELATIVE +// CHECK-NEXT: 0x202008 R_X86_64_IRELATIVE +// CHECK-NEXT: } +// CHECK-NEXT: ] +// CHECK: Symbols [ +// CHECK-NEXT: Symbol { +// CHECK-NEXT: Name: +// CHECK-NEXT: Value: 0x0 +// CHECK-NEXT: Size: 0 +// CHECK-NEXT: Binding: Local +// CHECK-NEXT: Type: None +// CHECK-NEXT: Other: 0 +// CHECK-NEXT: Section: Undefined +// CHECK-NEXT: } +// CHECK-NEXT: Symbol { +// CHECK-NEXT: Name: __rela_iplt_end +// CHECK-NEXT: Value: 0x200290 +// CHECK-NEXT: Size: 0 +// CHECK-NEXT: Binding: Local +// CHECK-NEXT: Type: None +// CHECK-NEXT: Other [ +// CHECK-NEXT: STV_HIDDEN +// CHECK-NEXT: ] +// CHECK-NEXT: Section: .rela.plt +// CHECK-NEXT: } +// CHECK-NEXT: Symbol { +// CHECK-NEXT: Name: __rela_iplt_start +// CHECK-NEXT: Value: [[RELA]] +// CHECK-NEXT: Size: 0 +// CHECK-NEXT: Binding: Local +// CHECK-NEXT: Type: None +// CHECK-NEXT: Other [ +// CHECK-NEXT: STV_HIDDEN +// CHECK-NEXT: ] +// CHECK-NEXT: Section: .rela.plt +// CHECK-NEXT: } +// CHECK-NEXT: Symbol { +// CHECK-NEXT: Name: _DYNAMIC (50) +// CHECK-NEXT: Value: 0x203000 +// CHECK-NEXT: Size: 0 +// CHECK-NEXT: Binding: Local (0x0) +// CHECK-NEXT: Type: None (0x0) +// CHECK-NEXT: Other [ (0x2) +// CHECK-NEXT: STV_HIDDEN (0x2) +// CHECK-NEXT: ] +// CHECK-NEXT: Section: .dynamic (0x8) +// CHECK-NEXT: } +// CHECK-NEXT: Symbol { +// CHECK-NEXT: Name: _start +// CHECK-NEXT: Value: 0x201002 +// CHECK-NEXT: Size: 0 +// CHECK-NEXT: Binding: Global +// CHECK-NEXT: Type: None +// CHECK-NEXT: Other: 0 +// CHECK-NEXT: Section: .text +// CHECK-NEXT: } +// CHECK-NEXT: Symbol { +// CHECK-NEXT: Name: bar +// CHECK-NEXT: Value: 0x201001 +// CHECK-NEXT: Size: 0 +// CHECK-NEXT: Binding: Global +// CHECK-NEXT: Type: GNU_IFunc +// CHECK-NEXT: Other: 0 +// CHECK-NEXT: Section: .text +// CHECK-NEXT: } +// CHECK-NEXT: Symbol { +// CHECK-NEXT: Name: foo +// CHECK-NEXT: Value: 0x201000 +// CHECK-NEXT: Size: 0 +// CHECK-NEXT: Binding: Global +// CHECK-NEXT: Type: GNU_IFunc +// CHECK-NEXT: Other: 0 +// CHECK-NEXT: Section: .text +// CHECK-NEXT: } +// CHECK-NEXT: ] + +// DISASM: Disassembly of section .text: +// DISASM-NEXT: foo: +// DISASM-NEXT: 201000: {{.*}} retq +// DISASM: bar: +// DISASM-NEXT: 201001: {{.*}} retq +// DISASM: _start: +// DISASM-NEXT: 201002: {{.*}} callq 25 +// DISASM-NEXT: 201007: {{.*}} callq 36 +// DISASM-NEXT: 20100c: {{.*}} movl $2097760, %edx +// DISASM-NEXT: 201011: {{.*}} movl $2097808, %edx +// DISASM-NEXT: 201016: {{.*}} movl $2097809, %edx +// DISASM-NEXT: Disassembly of section .plt: +// DISASM-NEXT: .plt: +// DISASM-NEXT: 201020: {{.*}} jmpq *4058(%rip) +// DISASM-NEXT: 201026: {{.*}} pushq $0 +// DISASM-NEXT: 20102b: {{.*}} jmp -32 <_start+0xE> +// DISASM-NEXT: 201030: {{.*}} jmpq *4050(%rip) +// DISASM-NEXT: 201036: {{.*}} pushq $1 +// DISASM-NEXT: 20103b: {{.*}} jmp -48 <_start+0xE> + +.text +.type foo STT_GNU_IFUNC +.globl foo +foo: + ret + +.type bar STT_GNU_IFUNC +.globl bar +bar: + ret + +.globl _start +_start: + call foo + call bar + movl $__rela_iplt_start,%edx + movl $__rela_iplt_end,%edx + movl $__rela_iplt_end + 1,%edx