lld/test/ELF/gnu-ifunc-i386.s

   1 // REQUIRES: x86
   2 // RUN: llvm-mc -filetype=obj -triple=i686-pc-linux %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: .rel.dyn
  11 // CHECK-NEXT:  Type: SHT_REL
  12 // CHECK-NEXT:  Flags [
  13 // CHECK-NEXT:    SHF_ALLOC
  14 // CHECK-NEXT:    SHF_INFO_LINK
  15 // CHECK-NEXT:  ]
  16 // CHECK-NEXT:  Address: [[RELA:.*]]
  17 // CHECK-NEXT:  Offset: 0xD4
  18 // CHECK-NEXT:  Size: 16
  19 // CHECK-NEXT:  Link: 0
  20 // CHECK-NEXT:  Info: 4
  21 // CHECK-NEXT:  AddressAlignment: 4
  22 // CHECK-NEXT:  EntrySize: 8
  23 // CHECK-NEXT: }
  24 // CHECK:     Relocations [
  25 // CHECK-NEXT:   Section ({{.*}}) .rel.dyn {
  26 // CHECK-NEXT:     0x402120 R_386_IRELATIVE
  27 // CHECK-NEXT:     0x402124 R_386_IRELATIVE
  28 // CHECK-NEXT:   }
  29 // CHECK-NEXT: ]
  30
  31 // CHECK:      Symbols [
  32 // CHECK-NEXT: Symbol {
  33 // CHECK-NEXT:   Name:
  34 // CHECK-NEXT:   Value: 0x0
  35 // CHECK-NEXT:   Size: 0
  36 // CHECK-NEXT:   Binding: Local
  37 // CHECK-NEXT:   Type: None
  38 // CHECK-NEXT:   Other: 0
  39 // CHECK-NEXT:   Section: Undefined
  40 // CHECK-NEXT: }
  41 // CHECK-NEXT: Symbol {
  42 // CHECK-NEXT:   Name: __rel_iplt_start
  43 // CHECK-NEXT:   Value: [[RELA]]
  44 // CHECK-NEXT:   Size: 0
  45 // CHECK-NEXT:   Binding: Local
  46 // CHECK-NEXT:   Type: None
  47 // CHECK-NEXT:   Other [
  48 // CHECK-NEXT:     STV_HIDDEN
  49 // CHECK-NEXT:   ]
  50 // CHECK-NEXT:   Section: .rel.dyn
  51 // CHECK-NEXT: }
  52 // CHECK-NEXT: Symbol {
  53 // CHECK-NEXT:   Name: __rel_iplt_end
  54 // CHECK-NEXT:   Value: 0x4000E4
  55 // CHECK-NEXT:   Size: 0
  56 // CHECK-NEXT:   Binding: Local
  57 // CHECK-NEXT:   Type: None
  58 // CHECK-NEXT:   Other [
  59 // CHECK-NEXT:     STV_HIDDEN
  60 // CHECK-NEXT:   ]
  61 // CHECK-NEXT:   Section: .rel.dyn
  62 // CHECK-NEXT: }
  63 // CHECK-NEXT: Symbol {
  64 // CHECK-NEXT:   Name: bar
  65 // CHECK-NEXT:   Value: 0x401100
  66 // CHECK-NEXT:   Size: 0
  67 // CHECK-NEXT:   Binding: Global
  68 // CHECK-NEXT:   Type: Function
  69 // CHECK-NEXT:   Other: 0
  70 // CHECK-NEXT:   Section: .iplt
  71 // CHECK-NEXT: }
  72 // CHECK-NEXT: Symbol {
  73 // CHECK-NEXT:   Name: bar_resolver
  74 // CHECK-NEXT:   Value: 0x4010E4
  75 // CHECK-NEXT:   Size: 0
  76 // CHECK-NEXT:   Binding: Global
  77 // CHECK-NEXT:   Type: Function
  78 // CHECK-NEXT:   Other: 0
  79 // CHECK-NEXT:   Section: .text
  80 // CHECK-NEXT: }
  81 // CHECK-NEXT: Symbol {
  82 // CHECK-NEXT:   Name: foo
  83 // CHECK-NEXT:   Value: 0x401110
  84 // CHECK-NEXT:   Size: 0
  85 // CHECK-NEXT:   Binding: Global
  86 // CHECK-NEXT:   Type: Function
  87 // CHECK-NEXT:   Other: 0
  88 // CHECK-NEXT:   Section: .iplt
  89 // CHECK-NEXT: }
  90 // CHECK-NEXT: Symbol {
  91 // CHECK-NEXT:   Name: foo_resolver
  92 // CHECK-NEXT:   Value: 0x4010E5
  93 // CHECK-NEXT:   Size: 0
  94 // CHECK-NEXT:   Binding: Global
  95 // CHECK-NEXT:   Type: Function
  96 // CHECK-NEXT:   Other: 0
  97 // CHECK-NEXT:   Section: .text
  98 // CHECK-NEXT: }
  99 // CHECK-NEXT: Symbol {
 100 // CHECK-NEXT:   Name: _start
 101 // CHECK-NEXT:   Value: 0x4010E6
 102 // CHECK-NEXT:   Size: 0
 103 // CHECK-NEXT:   Binding: Global
 104 // CHECK-NEXT:   Type: None
 105 // CHECK-NEXT:   Other: 0
 106 // CHECK-NEXT:   Section: .text
 107 // CHECK-NEXT: }
 108 // CHECK-NEXT:]
 109
 110 // DISASM: Disassembly of section .text:
 111 // DISASM-EMPTY:
 112 // DISASM-NEXT: <bar_resolver>:
 113 // DISASM-NEXT:   4010e4:       retl
 114 // DISASM:      <foo_resolver>:
 115 // DISASM-NEXT:   4010e5:       retl
 116 // DISASM:      <_start>:
 117 // DISASM-NEXT:   4010e6:       calll 0x401110 <foo>
 118 // DISASM-NEXT:                 calll 0x401100 <bar>
 119 // DISASM-NEXT:                 movl $4194516, %edx
 120 // DISASM-NEXT:                 movl $4194532, %edx
 121 // DISASM-EMPTY:
 122 // DISASM-NEXT: Disassembly of section .iplt:
 123 // DISASM-EMPTY:
 124 // DISASM-NEXT: <bar>:
 125 // DISASM-NEXT:   401100:       jmpl *4202784
 126 // DISASM-NEXT:                 pushl $0
 127 // DISASM-NEXT:                 jmp 0x0
 128 // DISASM:      <foo>:
 129 // DISASM-NEXT:   401110:       jmpl *4202788
 130 // DISASM-NEXT:                 pushl $8
 131 // DISASM-NEXT:                 jmp 0x0
 132
 133 .type bar STT_GNU_IFUNC
 134 .globl bar
 135 bar:
 136 .type bar_resolver STT_FUNC
 137 .globl bar_resolver
 138 bar_resolver:
 139  ret
 140
 141 .text
 142 .type foo STT_GNU_IFUNC
 143 .globl foo
 144 foo:
 145 .type foo_resolver STT_FUNC
 146 .globl foo_resolver
 147 foo_resolver:
 148  ret
 149
 150 .globl _start
 151 _start:
 152  call foo
 153  call bar
 154  movl $__rel_iplt_start,%edx
 155  movl $__rel_iplt_end,%edx