lld/test/ELF/systemz-ifunc-nonpreemptible.s

   1 # REQUIRES: systemz
   2 # RUN: llvm-mc -filetype=obj -triple=s390x-none-linux-gnu %s -o %t.o
   3 # RUN: ld.lld -static %t.o -o %t
   4 # RUN: ld.lld -static %t.o -o %t.apply --apply-dynamic-relocs
   5 # RUN: llvm-readelf --section-headers --relocations --symbols %t | FileCheck %s
   6 # RUN: llvm-readelf -x .got.plt %t | FileCheck %s --check-prefix=NO-APPLY-RELOC
   7 # RUN: llvm-readelf -x .got.plt %t.apply | FileCheck %s --check-prefix=APPLY-RELOC
   8 # RUN: llvm-objdump --no-print-imm-hex -d --no-show-raw-insn %t | FileCheck %s --check-prefix=DISASM
   9
  10 # CHECK:      Section Headers:
  11 # CHECK-NEXT:  [Nr] Name              Type            Address          Off    Size   ES Flg Lk Inf Al
  12 # CHECK-NEXT:  [ 0]                   NULL            0000000000000000 000000 000000 00      0   0  0
  13 # CHECK-NEXT:  [ 1] .rela.dyn         RELA            0000000001000158 000158 000030 18   A  0   0  8
  14 # CHECK-NEXT:  [ 2] .text             PROGBITS        0000000001001188 000188 00001c 00  AX  0   0  4
  15 # CHECK-NEXT:  [ 3] .iplt             PROGBITS        00000000010011b0 0001b0 000040 00  AX  0   0 16
  16 # CHECK-NEXT:  [ 4] .got.plt          PROGBITS        00000000010021f0 0001f0 000010 00  WA  0   0  8
  17
  18 # CHECK:      Relocation section '.rela.dyn' at offset 0x158 contains 2 entries:
  19 # CHECK-NEXT:     Offset             Info             Type               Symbol's Value  Symbol's Name + Addend
  20 # CHECK-NEXT: 00000000010021f0  000000000000003d R_390_IRELATIVE                   1001188
  21 # CHECK-NEXT: 00000000010021f8  000000000000003d R_390_IRELATIVE                   100118a
  22
  23 # CHECK:      Symbol table '.symtab' contains 6 entries:
  24 # CHECK-NEXT:   Num:    Value          Size Type    Bind   Vis       Ndx Name
  25 # CHECK-NEXT:     0: 0000000000000000     0 NOTYPE  LOCAL  DEFAULT   UND
  26 # CHECK-NEXT:     1: 0000000001000158     0 NOTYPE  LOCAL  HIDDEN      1 __rela_iplt_start
  27 # CHECK-NEXT:     2: 0000000001000188     0 NOTYPE  LOCAL  HIDDEN      1 __rela_iplt_end
  28 # CHECK-NEXT:     3: 0000000001001188     0 IFUNC   GLOBAL DEFAULT     2 foo
  29 # CHECK-NEXT:     4: 000000000100118a     0 IFUNC   GLOBAL DEFAULT     2 bar
  30 # CHECK-NEXT:     5: 000000000100118c     0 NOTYPE  GLOBAL DEFAULT     2 _start
  31
  32 # NO-APPLY-RELOC-LABEL:  Hex dump of section '.got.plt':
  33 # NO-APPLY-RELOC-NEXT:     0x010021f0 00000000 00000000 00000000 00000000
  34 # NO-APPLY-RELOC-EMPTY:
  35
  36 # APPLY-RELOC-LABEL:  Hex dump of section '.got.plt':
  37 # APPLY-RELOC-NEXT:     0x010021f0 00000000 01001188 00000000 0100118a
  38 # APPLY-RELOC-EMPTY:
  39
  40 # DISASM: Disassembly of section .text:
  41 # DISASM: 0000000001001188 <foo>:
  42 # DISASM-NEXT:  br      %r14
  43 # DISASM: 000000000100118a <bar>:
  44 # DISASM-NEXT:  br      %r14
  45 # DISASM: 000000000100118c  <_start>:
  46 # DISASM-NEXT:  brasl   %r14, 0x10011b0
  47 # DISASM-NEXT:  brasl   %r14, 0x10011d0
  48 # DISASM-NEXT:  larl    %r2, 0x1000158
  49 # DISASM-NEXT:  larl    %r2, 0x1000188
  50 # DISASM: Disassembly of section .iplt:
  51 # DISASM: <.iplt>:
  52 # DISASM:        10011b0:       larl    %r1, 0x10021f0
  53 # DISASM-NEXT:   10011b6:       lg      %r1, 0(%r1)
  54 # DISASM-NEXT:   10011bc:       br      %r1
  55 # DISASM:        10011d0:       larl    %r1, 0x10021f8
  56 # DISASM-NEXT:   10011d6:       lg      %r1, 0(%r1)
  57 # DISASM-NEXT:   10011dc:       br      %r1
  58
  59 .text
  60 .type foo STT_GNU_IFUNC
  61 .globl foo
  62 foo:
  63  br %r14
  64
  65 .type bar STT_GNU_IFUNC
  66 .globl bar
  67 bar:
  68  br %r14
  69
  70 .globl _start
  71 _start:
  72  brasl %r14, foo@plt
  73  brasl %r14, bar@plt
  74  larl %r2, __rela_iplt_start
  75  larl %r2, __rela_iplt_end