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

   1 // REQUIRES: aarch64
   2 // RUN: llvm-mc -filetype=obj -triple=aarch64 %s -o %t.o
   3 // RUN: ld.lld -static %t.o -o %tout
   4 // RUN: llvm-objdump --no-print-imm-hex -d --no-show-raw-insn %tout | FileCheck %s --check-prefix=DISASM
   5 // RUN: llvm-readobj -r --symbols --sections %tout | FileCheck %s
   6
   7 // CHECK:      Sections [
   8 // CHECK:       Section {
   9 // CHECK:       Index: 1
  10 // CHECK-NEXT:  Name: .rela.dyn
  11 // CHECK-NEXT:  Type: SHT_RELA
  12 // CHECK-NEXT:  Flags [
  13 // CHECK-NEXT:    SHF_ALLOC
  14 // CHECK-NEXT:  ]
  15 // CHECK-NEXT:  Address: [[RELA:.*]]
  16 // CHECK-NEXT:  Offset: 0x158
  17 // CHECK-NEXT:  Size: 48
  18 // CHECK-NEXT:  Link: 0
  19 // CHECK-NEXT:  Info: 0
  20 // CHECK-NEXT:  AddressAlignment: 8
  21 // CHECK-NEXT:  EntrySize: 24
  22 // CHECK-NEXT: }
  23 // CHECK:      Relocations [
  24 // CHECK-NEXT:   Section ({{.*}}) .rela.dyn {
  25 // CHECK-NEXT:     0x2201C0 R_AARCH64_IRELATIVE
  26 // CHECK-NEXT:     0x2201C8 R_AARCH64_IRELATIVE
  27 // CHECK-NEXT:   }
  28 // CHECK-NEXT: ]
  29 // CHECK:      Symbols [
  30 // CHECK-NEXT:  Symbol {
  31 // CHECK-NEXT:    Name:
  32 // CHECK-NEXT:    Value: 0x0
  33 // CHECK-NEXT:    Size: 0
  34 // CHECK-NEXT:    Binding: Local
  35 // CHECK-NEXT:    Type: None
  36 // CHECK-NEXT:    Other: 0
  37 // CHECK-NEXT:    Section: Undefined
  38 // CHECK-NEXT:  }
  39 // CHECK-NEXT:  Symbol {
  40 // CHECK-NEXT:    Name: $x
  41 // CHECK-NEXT:    Value: 0x210188
  42 // CHECK-NEXT:    Size: 0
  43 // CHECK-NEXT:    Binding: Local
  44 // CHECK-NEXT:    Type: None
  45 // CHECK-NEXT:    Other: 0
  46 // CHECK-NEXT:    Section: .text
  47 // CHECK-NEXT:  }
  48 // CHECK-NEXT:  Symbol {
  49 // CHECK-NEXT:    Name: __rela_iplt_start
  50 // CHECK-NEXT:    Value: 0x200158
  51 // CHECK-NEXT:    Size: 0
  52 // CHECK-NEXT:    Binding: Local
  53 // CHECK-NEXT:    Type: None
  54 // CHECK-NEXT:    Other [
  55 // CHECK-NEXT:      STV_HIDDEN
  56 // CHECK-NEXT:    ]
  57 // CHECK-NEXT:    Section: .rela.dyn
  58 // CHECK-NEXT:  }
  59 // CHECK-NEXT:  Symbol {
  60 // CHECK-NEXT:    Name: __rela_iplt_end
  61 // CHECK-NEXT:    Value: 0x200188
  62 // CHECK-NEXT:    Size: 0
  63 // CHECK-NEXT:    Binding: Local
  64 // CHECK-NEXT:    Type: None
  65 // CHECK-NEXT:    Other [
  66 // CHECK-NEXT:      STV_HIDDEN
  67 // CHECK-NEXT:    ]
  68 // CHECK-NEXT:    Section: .rela.dyn
  69 // CHECK-NEXT:  }
  70 // CHECK-NEXT:  Symbol {
  71 // CHECK-NEXT:    Name: foo
  72 // CHECK-NEXT:    Value: 0x210188
  73 // CHECK-NEXT:    Size: 0
  74 // CHECK-NEXT:    Binding: Global
  75 // CHECK-NEXT:    Type: GNU_IFunc
  76 // CHECK-NEXT:    Other: 0
  77 // CHECK-NEXT:    Section: .text
  78 // CHECK-NEXT:  }
  79 // CHECK-NEXT:  Symbol {
  80 // CHECK-NEXT:    Name: bar
  81 // CHECK-NEXT:    Value: 0x21018C
  82 // CHECK-NEXT:    Size: 0
  83 // CHECK-NEXT:    Binding: Global
  84 // CHECK-NEXT:    Type: GNU_IFunc
  85 // CHECK-NEXT:    Other: 0
  86 // CHECK-NEXT:    Section: .text
  87 // CHECK-NEXT:  }
  88 // CHECK-NEXT:  Symbol {
  89 // CHECK-NEXT:    Name: _start
  90 // CHECK-NEXT:    Value: 0x210190
  91 // CHECK-NEXT:    Size: 0
  92 // CHECK-NEXT:    Binding: Global
  93 // CHECK-NEXT:    Type: None
  94 // CHECK-NEXT:    Other: 0
  95 // CHECK-NEXT:    Section: .text
  96 // CHECK-NEXT:  }
  97 // CHECK-NEXT: ]
  98
  99 // 344 = 0x158
 100 // 392 = 0x188
 101
 102 // DISASM: Disassembly of section .text:
 103 // DISASM-EMPTY:
 104 // DISASM-NEXT: <foo>:
 105 // DISASM-NEXT:  210188: ret
 106 // DISASM: <bar>:
 107 // DISASM-NEXT:  21018c: ret
 108 // DISASM:      <_start>:
 109 // DISASM-NEXT:  210190: bl  0x2101a0
 110 // DISASM-NEXT:  210194: bl  0x2101b0
 111 // DISASM-NEXT:  210198: add x2, x2, #344
 112 // DISASM-NEXT:  21019c: add x2, x2, #392
 113 // DISASM-EMPTY:
 114 // DISASM-NEXT: Disassembly of section .iplt:
 115 // DISASM-EMPTY:
 116 // DISASM-NEXT: <.iplt>:
 117 // DISASM-NEXT:  2101a0: adrp x16, 0x220000
 118 // DISASM-NEXT:  2101a4: ldr x17, [x16, #448]
 119 // DISASM-NEXT:  2101a8: add x16, x16, #448
 120 // DISASM-NEXT:  2101ac: br x17
 121 // DISASM-NEXT:  2101b0: adrp x16, 0x220000
 122 // DISASM-NEXT:  2101b4: ldr x17, [x16, #456]
 123 // DISASM-NEXT:  2101b8: add x16, x16, #456
 124 // DISASM-NEXT:  2101bc: br x17
 125
 126 .text
 127 .type foo STT_GNU_IFUNC
 128 .globl foo
 129 foo:
 130  ret
 131
 132 .type bar STT_GNU_IFUNC
 133 .globl bar
 134 bar:
 135  ret
 136
 137 .globl _start
 138 _start:
 139  bl foo
 140  bl bar
 141  add x2, x2, :lo12:__rela_iplt_start
 142  add x2, x2, :lo12:__rela_iplt_end