vendor/lld/lld-trunk-r256633

1 files changed, 126 insertions, 0 deletions

diff --git a/test/ELF/gnu-ifunc.s b/test/ELF/gnu-ifunc.s
new file mode 100644
index 000000000000..b04f2758e22c
--- /dev/null
+++ b/test/ELF/gnu-ifunc.s
@@ -0,0 +1,126 @@
+// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
+// RUN: ld.lld -static %t.o -o %tout
+// RUN: llvm-objdump -d %tout | FileCheck %s --check-prefix=DISASM
+// RUN: llvm-readobj -r -symbols -sections %tout | FileCheck %s --check-prefix=CHECK
+// REQUIRES: x86
+
+// CHECK:      Sections [
+// CHECK:       Section {
+// CHECK:       Index: 1
+// 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: 0x158
+// CHECK-NEXT:  Size: 48
+// CHECK-NEXT:  Link: 5
+// CHECK-NEXT:  Info: 0
+// CHECK-NEXT:  AddressAlignment: 8
+// CHECK-NEXT:  EntrySize: 24
+// CHECK-NEXT: }
+// CHECK:      Relocations [
+// CHECK-NEXT:   Section ({{.*}}) .rela.plt {
+// CHECK-NEXT:     0x12018 R_X86_64_IRELATIVE
+// CHECK-NEXT:     0x12020 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: 0x10188
+// CHECK-NEXT:    Size: 0
+// CHECK-NEXT:    Binding: Local
+// CHECK-NEXT:    Type: None
+// CHECK-NEXT:    Other: 0
+// CHECK-NEXT:    Section: Absolute
+// 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: 0
+// CHECK-NEXT:    Section: Absolute
+// CHECK-NEXT:  }
+// CHECK-NEXT:  Symbol {
+// CHECK-NEXT:    Name: _start
+// CHECK-NEXT:    Value: 0x11002
+// 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: 0x11001
+// 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: 0x11000
+// 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:    11000: c3 retq
+// DISASM:      bar:
+// DISASM-NEXT:    11001: c3 retq
+// DISASM:      _start:
+// DISASM-NEXT:    11002: e8 29 00 00 00 callq 41
+// DISASM-NEXT:    11007: e8 34 00 00 00 callq 52
+// DISASM-NEXT:    1100c: ba 58 01 01 00 movl $65880, %edx
+// DISASM-NEXT:    11011: ba 88 01 01 00 movl $65928, %edx
+// DISASM-NEXT: Disassembly of section .plt:
+// DISASM-NEXT: .plt:
+// DISASM-NEXT:    11020: ff 35 e2 0f 00 00 pushq 4066(%rip)
+// DISASM-NEXT:    11026: ff 25 e4 0f 00 00 jmpq *4068(%rip)
+// DISASM-NEXT:    1102c: 0f 1f 40 00       nopl (%rax)
+// DISASM-NEXT:    11030: ff 25 e2 0f 00 00 jmpq *4066(%rip)
+// DISASM-NEXT:    11036: 68 00 00 00 00    pushq $0
+// DISASM-NEXT:    1103b: e9 e0 ff ff ff    jmp -32
+// DISASM-NEXT:    11040: ff 25 da 0f 00 00 jmpq *4058(%rip)
+// DISASM-NEXT:    11046: 68 01 00 00 00    pushq $1
+// DISASM-NEXT:    1104b: e9 d0 ff ff ff    jmp -48
+
+.text
+.type foo STT_GNU_IFUNC
+.globl foo
+.type foo, @function
+foo:
+ ret
+
+.type bar STT_GNU_IFUNC
+.globl bar
+.type bar, @function
+bar:
+ ret
+
+.globl _start
+_start:
+ call foo
+ call bar
+ movl $__rela_iplt_start,%edx
+ movl $__rela_iplt_end,%edx