| // REQUIRES: x86 |
| |
| /// Test -z ifunc-noplt. |
| |
| // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-freebsd %S/Inputs/shared2-x86-64.s -o %t1.o |
| // RUN: ld.lld %t1.o --shared -soname=so -o %t.so |
| // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-freebsd %s -o %t.o |
| |
| /// The default -z text is not compatible with -z ifunc-noplt. |
| // RUN: not ld.lld -z ifunc-noplt %t.o -o /dev/null 2>&1| FileCheck --check-prefix=INCOMPATIBLE %s |
| // RUN: not ld.lld -z ifunc-noplt -z text %t.o -o /dev/null 2>&1| FileCheck --check-prefix=INCOMPATIBLE %s |
| // INCOMPATIBLE: -z text and -z ifunc-noplt may not be used together |
| |
| // RUN: ld.lld -z ifunc-noplt -z notext --hash-style=sysv %t.so %t.o -o %tout |
| // RUN: llvm-objdump -d --no-show-raw-insn %tout | FileCheck %s --check-prefix=DISASM |
| // RUN: llvm-readobj -r --dynamic-table %tout | FileCheck %s |
| |
| // Check that we emitted relocations for the ifunc calls |
| // CHECK: Relocations [ |
| // CHECK-NEXT: Section (4) .rela.dyn { |
| // CHECK-NEXT: 0x201323 R_X86_64_PLT32 foo 0xFFFFFFFFFFFFFFFC |
| // CHECK-NEXT: 0x201328 R_X86_64_PLT32 bar 0xFFFFFFFFFFFFFFFC |
| // CHECK-NEXT: } |
| // CHECK-NEXT: Section (5) .rela.plt { |
| // CHECK-NEXT: 0x203498 R_X86_64_JUMP_SLOT bar2 0x0 |
| // CHECK-NEXT: 0x2034A0 R_X86_64_JUMP_SLOT zed2 0x0 |
| // CHECK-NEXT: } |
| |
| // Check that ifunc call sites still require relocation |
| // DISASM: Disassembly of section .text: |
| // DISASM-EMPTY: |
| // DISASM-NEXT: 0000000000201320 <foo>: |
| // DISASM-NEXT: 201320: retq |
| // DISASM-EMPTY: |
| // DISASM-NEXT: 0000000000201321 <bar>: |
| // DISASM-NEXT: 201321: retq |
| // DISASM-EMPTY: |
| // DISASM-NEXT: 0000000000201322 <_start>: |
| // DISASM-NEXT: 201322: callq 0x201327 <_start+0x5> |
| // DISASM-NEXT: 201327: callq 0x20132c <_start+0xa> |
| // DISASM-NEXT: 20132c: callq 0x201350 <bar2@plt> |
| // DISASM-NEXT: 201331: callq 0x201360 <zed2@plt> |
| // DISASM-EMPTY: |
| // DISASM-NEXT: Disassembly of section .plt: |
| // DISASM-EMPTY: |
| // DISASM-NEXT: 0000000000201340 <.plt>: |
| // DISASM-NEXT: 201340: pushq 8514(%rip) |
| // DISASM-NEXT: 201346: jmpq *8516(%rip) |
| // DISASM-NEXT: 20134c: nopl (%rax) |
| // DISASM-EMPTY: |
| // DISASM-NEXT: 0000000000201350 <bar2@plt>: |
| // DISASM-NEXT: 201350: jmpq *8514(%rip) |
| // DISASM-NEXT: 201356: pushq $0 |
| // DISASM-NEXT: 20135b: jmp 0x201340 <.plt> |
| // DISASM-EMPTY: |
| // DISASM-NEXT: 0000000000201360 <zed2@plt>: |
| // DISASM-NEXT: 201360: jmpq *8506(%rip) |
| // DISASM-NEXT: 201366: pushq $1 |
| // DISASM-NEXT: 20136b: jmp 0x201340 <.plt> |
| |
| .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 |
