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150
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1 // REQUIRES: x86
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2
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3 /// For non-preemptable ifunc, place ifunc PLT entries after regular PLT entries.
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4
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5 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %S/Inputs/shared2-x86-64.s -o %t1.o
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6 // RUN: ld.lld %t1.o --shared -soname=so -o %t.so
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7 // RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
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8 // RUN: ld.lld --hash-style=sysv %t.so %t.o -o %tout
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9 // RUN: llvm-objdump -d --no-show-raw-insn %tout | FileCheck %s --check-prefix=DISASM
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10 // RUN: llvm-objdump -s %tout | FileCheck %s --check-prefix=GOTPLT
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11 // RUN: llvm-readobj -r --dynamic-table %tout | FileCheck %s
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12
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173
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13 /// Check that the PLTRELSZ tag does not include the IRELATIVE relocations
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14 // CHECK: DynamicSection [
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15 // CHECK: 0x0000000000000008 RELASZ 48 (bytes)
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16 // CHECK: 0x0000000000000002 PLTRELSZ 48 (bytes)
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17
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150
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18 // Check that the IRELATIVE relocations are after the JUMP_SLOT in the plt
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19 // CHECK: Relocations [
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20 // CHECK-NEXT: Section (4) .rela.dyn {
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21 // CHECK-NEXT: 0x203458 R_X86_64_IRELATIVE - 0x2012D8
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22 // CHECK-NEXT: 0x203460 R_X86_64_IRELATIVE - 0x2012D9
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23 // CHECK-NEXT: }
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24 // CHECK-NEXT: Section (5) .rela.plt {
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25 // CHECK-NEXT: 0x203448 R_X86_64_JUMP_SLOT bar2 0x0
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26 // CHECK-NEXT: 0x203450 R_X86_64_JUMP_SLOT zed2 0x0
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27 // CHECK-NEXT: }
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28
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29 // Check that .got.plt entries point back to PLT header
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30 // GOTPLT: Contents of section .got.plt:
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31 // GOTPLT-NEXT: 203430 40232000 00000000 00000000 00000000
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32 // GOTPLT-NEXT: 203440 00000000 00000000 06132000 00000000
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33 // GOTPLT-NEXT: 203450 16132000 00000000 00000000 00000000
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34 // GOTPLT-NEXT: 203460 00000000 00000000
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35
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36 // Check that a PLT header is written and the ifunc entries appear last
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37 // DISASM: Disassembly of section .text:
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38 // DISASM-EMPTY:
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173
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39 // DISASM-NEXT: <foo>:
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150
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40 // DISASM-NEXT: 2012d8: retq
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173
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41 // DISASM: <bar>:
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150
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42 // DISASM-NEXT: 2012d9: retq
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173
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43 // DISASM: <_start>:
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44 // DISASM-NEXT: 2012da: callq 0x201320
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45 // DISASM-NEXT: 2012df: callq 0x201330
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150
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46 // DISASM-NEXT: callq {{.*}} <bar2@plt>
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47 // DISASM-NEXT: callq {{.*}} <zed2@plt>
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48 // DISASM-EMPTY:
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49 // DISASM-NEXT: Disassembly of section .plt:
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50 // DISASM-EMPTY:
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173
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51 // DISASM-NEXT: <.plt>:
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150
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52 // DISASM-NEXT: 2012f0: pushq 8514(%rip)
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53 // DISASM-NEXT: 2012f6: jmpq *8516(%rip)
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54 // DISASM-NEXT: 2012fc: nopl (%rax)
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55 // DISASM-EMPTY:
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173
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56 // DISASM-NEXT: <bar2@plt>:
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150
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57 // DISASM-NEXT: 201300: jmpq *8514(%rip)
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58 // DISASM-NEXT: 201306: pushq $0
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173
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59 // DISASM-NEXT: 20130b: jmp 0x2012f0 <.plt>
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150
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60 // DISASM-EMPTY:
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173
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61 // DISASM-NEXT: <zed2@plt>:
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150
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62 // DISASM-NEXT: 201310: jmpq *8506(%rip)
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63 // DISASM-NEXT: 201316: pushq $1
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173
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64 // DISASM-NEXT: 20131b: jmp 0x2012f0 <.plt>
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150
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65 // DISASM-EMPTY:
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66 // DISASM-NEXT: Disassembly of section .iplt:
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67 // DISASM-EMPTY:
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173
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68 // DISASM-NEXT: <.iplt>:
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150
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69 // DISASM-NEXT: 201320: jmpq *8498(%rip)
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70 // DISASM-NEXT: 201326: pushq $0
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173
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71 // DISASM-NEXT: 20132b: jmp 0x2012f0 <.plt>
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150
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72 // DISASM-NEXT: 201330: jmpq *8490(%rip)
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73 // DISASM-NEXT: 201336: pushq $1
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173
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74 // DISASM-NEXT: 20133b: jmp 0x2012f0 <.plt>
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150
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75
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76 .text
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77 .type foo STT_GNU_IFUNC
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78 .globl foo
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79 foo:
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80 ret
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81
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82 .type bar STT_GNU_IFUNC
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83 .globl bar
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84 bar:
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85 ret
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86
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87 .globl _start
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88 _start:
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89 call foo
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90 call bar
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91 call bar2
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92 call zed2
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