lld/test/ELF/aarch64-gnu-ifunc-plt.s

   1 // REQUIRES: aarch64
   2 // RUN: llvm-mc -filetype=obj -triple=aarch64-none-linux-gnu %S/Inputs/shared2.s -o %t1.o
   3 // RUN: ld.lld %t1.o --shared --soname=t.so -o %t.so
   4 // RUN: llvm-mc -filetype=obj -triple=aarch64-none-linux-gnu %s -o %t.o
   5 // RUN: ld.lld --hash-style=sysv %t.so %t.o -o %tout
   6 // RUN: llvm-objdump --no-print-imm-hex -d --no-show-raw-insn %tout | FileCheck %s --check-prefix=DISASM
   7 // RUN: llvm-objdump -s %tout | FileCheck %s --check-prefix=GOTPLT
   8 // RUN: llvm-readobj --dynamic-table -r %tout | FileCheck %s
   9
  10 // RUN: llvm-mc -filetype=obj -triple=aarch64_be %S/Inputs/shared2.s -o %t1.be.o
  11 // RUN: ld.lld %t1.be.o --shared --soname=t.so -o %t.be.so
  12 // RUN: llvm-mc -filetype=obj -triple=aarch64_be %s -o %t.be.o
  13 // RUN: ld.lld --hash-style=sysv %t.be.so %t.be.o -o %t.be
  14 // RUN: llvm-objdump --no-print-imm-hex -d --no-show-raw-insn %t.be | FileCheck %s --check-prefix=DISASM
  15 // RUN: llvm-objdump -s %t.be | FileCheck %s --check-prefix=GOTPLT_BE
  16 // RUN: llvm-readobj --dynamic-table -r %t.be | FileCheck %s
  17
  18 // Check that the PLTRELSZ tag does not include the IRELATIVE relocations
  19 // CHECK: DynamicSection [
  20 // CHECK:   0x0000000000000008 RELASZ               48 (bytes)
  21 // CHECK:   0x0000000000000002 PLTRELSZ             48 (bytes)
  22
  23 // Check that the IRELATIVE relocations are after the JUMP_SLOT in the plt
  24 // CHECK: Relocations [
  25 // CHECK-NEXT:   Section (4) .rela.dyn {
  26 // CHECK-NEXT:     0x230468 R_AARCH64_IRELATIVE - 0x2102D8
  27 // CHECK-NEXT:     0x230470 R_AARCH64_IRELATIVE - 0x2102DC
  28 // CHECK-NEXT:   }
  29 // CHECK-NEXT:   Section (5) .rela.plt {
  30 // CHECK-NEXT:     0x230458 R_AARCH64_JUMP_SLOT bar2 0x0
  31 // CHECK-NEXT:     0x230460 R_AARCH64_JUMP_SLOT zed2 0x0
  32 // CHECK-NEXT:   }
  33 // CHECK-NEXT: ]
  34
  35 // Check that .got.plt entries point back to PLT header
  36 // GOTPLT: Contents of section .got.plt:
  37 // GOTPLT-NEXT:  230440 00000000 00000000 00000000 00000000
  38 // GOTPLT-NEXT:  230450 00000000 00000000 f0022100 00000000
  39 // GOTPLT-NEXT:  230460 f0022100 00000000 00000000 00000000
  40 // GOTPLT-NEXT:  230470 00000000 00000000
  41
  42 // GOTPLT_BE: Contents of section .got.plt:
  43 // GOTPLT_BE-NEXT:  230440 00000000 00000000 00000000 00000000
  44 // GOTPLT_BE-NEXT:  230450 00000000 00000000 00000000 002102f0
  45 // GOTPLT_BE-NEXT:  230460 00000000 002102f0 00000000 00000000
  46 // GOTPLT_BE-NEXT:  230470 00000000 00000000
  47
  48 // Check that a PLT header is written and the ifunc entries appear last
  49 // DISASM: Disassembly of section .text:
  50 // DISASM-EMPTY:
  51 // DISASM-NEXT: <foo>:
  52 // DISASM-NEXT:    2102d8: ret
  53 // DISASM:      <bar>:
  54 // DISASM-NEXT:    2102dc: ret
  55 // DISASM:      <_start>:
  56 // DISASM-NEXT:    2102e0: bl      0x210330 <zed2+0x210330>
  57 // DISASM-NEXT:    2102e4: bl      0x210340 <zed2+0x210340>
  58 // DISASM-NEXT:    2102e8: bl      0x210310 <bar2@plt>
  59 // DISASM-NEXT:    2102ec: bl      0x210320 <zed2@plt>
  60 // DISASM-EMPTY:
  61 // DISASM-NEXT: Disassembly of section .plt:
  62 // DISASM-EMPTY:
  63 // DISASM-NEXT: <.plt>:
  64 // DISASM-NEXT:    2102f0: stp     x16, x30, [sp, #-16]!
  65 // DISASM-NEXT:    2102f4: adrp    x16, 0x230000
  66 // DISASM-NEXT:    2102f8: ldr     x17, [x16, #1104]
  67 // DISASM-NEXT:    2102fc: add     x16, x16, #1104
  68 // DISASM-NEXT:    210300: br      x17
  69 // DISASM-NEXT:    210304: nop
  70 // DISASM-NEXT:    210308: nop
  71 // DISASM-NEXT:    21030c: nop
  72 // DISASM-EMPTY:
  73 // DISASM-NEXT:   <bar2@plt>:
  74 // DISASM-NEXT:    210310: adrp    x16, 0x230000
  75 // DISASM-NEXT:    210314: ldr     x17, [x16, #1112]
  76 // DISASM-NEXT:    210318: add     x16, x16, #1112
  77 // DISASM-NEXT:    21031c: br      x17
  78 // DISASM-EMPTY:
  79 // DISASM-NEXT:   <zed2@plt>:
  80 // DISASM-NEXT:    210320: adrp    x16, 0x230000
  81 // DISASM-NEXT:    210324: ldr     x17, [x16, #1120]
  82 // DISASM-NEXT:    210328: add     x16, x16, #1120
  83 // DISASM-NEXT:    21032c: br      x17
  84 // DISASM-EMPTY:
  85 // DISASM-NEXT: Disassembly of section .iplt:
  86 // DISASM-EMPTY:
  87 // DISASM-NEXT: <.iplt>:
  88 // DISASM-NEXT:    210330: adrp    x16, 0x230000
  89 // DISASM-NEXT:    210334: ldr     x17, [x16, #1128]
  90 // DISASM-NEXT:    210338: add     x16, x16, #1128
  91 // DISASM-NEXT:    21033c: br      x17
  92 // DISASM-NEXT:    210340: adrp    x16, 0x230000
  93 // DISASM-NEXT:    210344: ldr     x17, [x16, #1136]
  94 // DISASM-NEXT:    210348: add     x16, x16, #1136
  95 // DISASM-NEXT:    21034c: br      x17
  96
  97 .text
  98 .type foo STT_GNU_IFUNC
  99 .globl foo
 100 foo:
 101  ret
 102
 103 .type bar STT_GNU_IFUNC
 104 .globl bar
 105 bar:
 106  ret
 107
 108 .globl _start
 109 _start:
 110  bl foo
 111  bl bar
 112  bl bar2
 113  bl zed2