lld/test/ELF/x86-x32-plt.s

   1 # REQUIRES: x86
   2 # RUN: llvm-mc -filetype=obj -triple=x86_64-gnux32 %s -o %t.o
   3 # RUN: llvm-mc -filetype=obj -triple=x86_64-gnux32 %p/Inputs/shared.s -o %t2.o
   4 # RUN: ld.lld -shared -soname=t2 %t2.o -o %t2.so
   5
   6 # RUN: ld.lld %t.o %t2.so -o %t
   7 # RUN: llvm-readelf -S -r %t | FileCheck %s
   8 # RUN: llvm-objdump --no-print-imm-hex -d --no-show-raw-insn %t | FileCheck %s --check-prefixes=DISASM
   9
  10 # CHECK:      Name      Type     Address          Off    Size   ES Flg Lk Inf Al
  11 # CHECK:      .plt      PROGBITS 002011e0 0001e0 000030 00 AX   0   0 16
  12 # CHECK:      .got.plt  PROGBITS 00203278 000278 000028 00 WA   0   0  8
  13 # CHECK:      Relocation section '.rela.plt' at offset {{.*}} contains 2 entries:
  14 # CHECK:      00203290 {{.*}} R_X86_64_JUMP_SLOT 00000000 weak + 0
  15 # CHECK-NEXT: 00203298 {{.*}} R_X86_64_JUMP_SLOT 00000000 bar + 0
  16
  17 # DISASM:       <_start>:
  18 # DISASM-NEXT:    callq {{.*}} <local>
  19 # DISASM-NEXT:    callq {{.*}} <bar@plt>
  20 # DISASM-NEXT:    jmp   {{.*}} <bar@plt>
  21 # DISASM-NEXT:    jmp   {{.*}} <weak@plt>
  22
  23 # DISASM:      Disassembly of section .plt:
  24 # DISASM-EMPTY:
  25 # DISASM-NEXT: <.plt>:
  26 # DISASM-NEXT: 2011e0:     pushq 8346(%rip)  # 0x203280
  27 # DISASM-NEXT:             jmpq *8348(%rip)  # 0x203288
  28 # DISASM-NEXT:             nopl (%rax)
  29 # DISASM-EMPTY:
  30 # DISASM-NEXT: <weak@plt>:
  31 # DISASM-NEXT: 2011f0:     jmpq *8346(%rip)  # 0x203290
  32 # DISASM-NEXT:             pushq $0
  33 # DISASM-NEXT:             jmp 0x2011e0 <.plt>
  34 # DISASM-EMPTY:
  35 # DISASM-NEXT: <bar@plt>:
  36 # DISASM-NEXT: 201200:     jmpq *8338(%rip)  # 0x203298
  37 # DISASM-NEXT:             pushq $1
  38 # DISASM-NEXT:             jmp 0x2011e0 <.plt>
  39 # DISASM-NOT:  {{.}}
  40
  41 .global _start
  42 .weak weak
  43
  44 _start:
  45   call local
  46   call bar
  47   jmp bar@plt
  48   jmp weak
  49
  50 ## foo is local and non-preemptale, no PLT is generated.
  51 local:
  52   ret