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Diffstat (limited to 'test/ELF/gnu-ifunc-plt.s')
| -rw-r--r-- | test/ELF/gnu-ifunc-plt.s | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/test/ELF/gnu-ifunc-plt.s b/test/ELF/gnu-ifunc-plt.s new file mode 100644 index 000000000000..c7bd6b67b115 --- /dev/null +++ b/test/ELF/gnu-ifunc-plt.s @@ -0,0 +1,74 @@ +// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %S/Inputs/shared2-x86-64.s -o %t1.o +// RUN: ld.lld %t1.o --shared -o %t.so +// RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o +// RUN: ld.lld %t.so %t.o -o %tout +// RUN: llvm-objdump -d %tout | FileCheck %s --check-prefix=DISASM +// RUN: llvm-objdump -s %tout | FileCheck %s --check-prefix=GOTPLT +// RUN: llvm-readobj -r -dynamic-table %tout | FileCheck %s +// REQUIRES: x86 + +// Check that the IRELATIVE relocations are after the JUMP_SLOT in the plt +// CHECK: Relocations [ +// CHECK-NEXT: Section (4) .rela.plt { +// CHECK-NEXT: 0x203018 R_X86_64_JUMP_SLOT bar2 0x0 +// CHECK-NEXT: 0x203020 R_X86_64_JUMP_SLOT zed2 0x0 +// CHECK-NEXT: 0x203028 R_X86_64_IRELATIVE - 0x201000 +// CHECK-NEXT: 0x203030 R_X86_64_IRELATIVE - 0x201001 + +// Check that .got.plt entries point back to PLT header +// GOTPLT: Contents of section .got.plt: +// GOTPLT-NEXT: 203000 00202000 00000000 00000000 00000000 . ............. +// GOTPLT-NEXT: 203010 00000000 00000000 36102000 00000000 ........6. ..... +// GOTPLT-NEXT: 203020 46102000 00000000 56102000 00000000 F. .....V. ..... +// GOTPLT-NEXT: 203030 66102000 00000000 + +// Check that the PLTRELSZ tag includes the IRELATIVE relocations +// CHECK: DynamicSection [ +// CHECK: 0x0000000000000002 PLTRELSZ 96 (bytes) + +// Check that a PLT header is written and the ifunc entries appear last +// DISASM: Disassembly of section .text: +// DISASM-NEXT: foo: +// DISASM-NEXT: 201000: c3 retq +// DISASM: bar: +// DISASM-NEXT: 201001: c3 retq +// DISASM: _start: +// DISASM-NEXT: 201002: e8 49 00 00 00 callq 73 +// DISASM-NEXT: 201007: e8 54 00 00 00 callq 84 +// DISASM-NEXT: 20100c: e8 1f 00 00 00 callq 31 +// DISASM-NEXT: 201011: e8 2a 00 00 00 callq 42 +// DISASM-NEXT: Disassembly of section .plt: +// DISASM-NEXT: .plt: +// DISASM-NEXT: 201020: ff 35 e2 1f 00 00 pushq 8162(%rip) +// DISASM-NEXT: 201026: ff 25 e4 1f 00 00 jmpq *8164(%rip) +// DISASM-NEXT: 20102c: 0f 1f 40 00 nopl (%rax) +// DISASM-NEXT: 201030: ff 25 e2 1f 00 00 jmpq *8162(%rip) +// DISASM-NEXT: 201036: 68 00 00 00 00 pushq $0 +// DISASM-NEXT: 20103b: e9 e0 ff ff ff jmp -32 <.plt> +// DISASM-NEXT: 201040: ff 25 da 1f 00 00 jmpq *8154(%rip) +// DISASM-NEXT: 201046: 68 01 00 00 00 pushq $1 +// DISASM-NEXT: 20104b: e9 d0 ff ff ff jmp -48 <.plt> +// DISASM-NEXT: 201050: ff 25 d2 1f 00 00 jmpq *8146(%rip) +// DISASM-NEXT: 201056: 68 00 00 00 00 pushq $0 +// DISASM-NEXT: 20105b: e9 e0 ff ff ff jmp -32 <.plt+0x20> +// DISASM-NEXT: 201060: ff 25 ca 1f 00 00 jmpq *8138(%rip) +// DISASM-NEXT: 201066: 68 01 00 00 00 pushq $1 +// DISASM-NEXT: 20106b: e9 d0 ff ff ff jmp -48 <.plt+0x20> + +.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 + call bar2 + call zed2 |