1// REQUIRES: x86
2
3/// For non-preemptable ifunc, place ifunc PLT entries after regular PLT entries.
4
5// RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
6// RUN: ld.lld --shared -o %t.so %t.o
7// RUN: llvm-objdump -d --no-show-raw-insn %t.so | FileCheck %s --check-prefix=DISASM
8// RUN: llvm-readobj -r %t.so | FileCheck %s
9
10// Check that an IRELATIVE relocation is used for a non-preemptible ifunc
11// handler and a JUMP_SLOT is used for a preemptible ifunc
12// DISASM: Disassembly of section .text:
13// DISASM-EMPTY:
14// DISASM-NEXT: fct:
15// DISASM-NEXT:     1308:       retq
16// DISASM:     fct2:
17// DISASM-NEXT:     1309:       retq
18// DISASM:     f1:
19// DISASM-NEXT:     130a:       callq   65
20// DISASM-NEXT:     130f:       callq   28
21// DISASM-NEXT:     1314:       callq   39
22// DISASM-NEXT:     1319:       retq
23// DISASM:     f2:
24// DISASM-NEXT:     131a:       retq
25// DISASM-EMPTY:
26// DISASM-NEXT: Disassembly of section .plt:
27// DISASM-EMPTY:
28// DISASM-NEXT: .plt:
29// DISASM-NEXT:     1320:       pushq   8482(%rip)
30// DISASM-NEXT:     1326:       jmpq    *8484(%rip)
31// DISASM-NEXT:     132c:       nopl    (%rax)
32// DISASM-EMPTY:
33// DISASM-NEXT:   fct2@plt:
34// DISASM-NEXT:     1330:       jmpq    *8482(%rip)
35// DISASM-NEXT:     1336:       pushq   $0
36// DISASM-NEXT:     133b:       jmp     -32 <.plt>
37// DISASM-EMPTY:
38// DISASM-NEXT:   f2@plt:
39// DISASM-NEXT:     1340:       jmpq    *8474(%rip)
40// DISASM-NEXT:     1346:       pushq   $1
41// DISASM-NEXT:     134b:       jmp     -48 <.plt>
42// DISASM-NEXT:     1350:       jmpq    *8466(%rip)
43// DISASM-NEXT:     1356:       pushq   $0
44// DISASM-NEXT:     135b:       jmp     -32 <f2@plt>
45
46// CHECK: Relocations [
47// CHECK-NEXT:   Section (5) .rela.dyn {
48// CHECK-NEXT:     0x3468 R_X86_64_IRELATIVE - 0x1308
49// CHECK-NEXT:   }
50// CHECK-NEXT:   Section (6) .rela.plt {
51// CHECK-NEXT:     0x3458 R_X86_64_JUMP_SLOT fct2 0x0
52// CHECK-NEXT:     0x3460 R_X86_64_JUMP_SLOT f2 0x0
53// CHECK-NEXT:   }
54
55 // Hidden expect IRELATIVE
56 .globl fct
57 .hidden fct
58 .type  fct, STT_GNU_IFUNC
59fct:
60 ret
61
62 // Not hidden expect JUMP_SLOT
63 .globl fct2
64 .type  fct2, STT_GNU_IFUNC
65fct2:
66 ret
67
68 .globl f1
69 .type f1, @function
70f1:
71 call fct
72 call fct2
73 call f2@PLT
74 ret
75
76 .globl f2
77 .type f2, @function
78f2:
79 ret
80