lld/test/ELF/mips-26.s

   1 # REQUIRES: mips
   2 # Check R_MIPS_26 relocation handling.
   3
   4 # RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux %s -o %t1.o
   5 # RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux \
   6 # RUN:         %S/Inputs/mips-dynamic.s -o %t2.o
   7 # RUN: ld.lld %t2.o -shared -o %t.so
   8 # RUN: ld.lld %t1.o %t.so -o %t.exe
   9 # RUN: llvm-objdump -d --no-show-raw-insn --print-imm-hex %t.exe | FileCheck %s
  10 # RUN: llvm-readobj -S --dynamic-table -r -A %t.exe \
  11 # RUN:   | FileCheck -check-prefix=REL %s
  12
  13 # CHECK:      Disassembly of section .text:
  14 # CHECK-EMPTY:
  15 # CHECK-NEXT: <bar>:
  16 # CHECK-NEXT:   [[BAR:[0-9a-f]+]]:  jal  0x[[LOC:[0-9a-f]+]] <loc>
  17 # CHECK-NEXT:   {{.*}}:              nop
  18 #
  19 # CHECK:      <__start>:
  20 # CHECK-NEXT:   {{.*}}:       jal     0x[[BAR]] <bar>
  21 # CHECK-NEXT:   {{.*}}:       nop
  22 # CHECK-NEXT:   {{.*}}:       jal     0x[[FOO0:[0-9a-f]+]]
  23 #                                     ^-- gotplt[foo0]
  24 # CHECK-NEXT:   {{.*}}:       nop
  25 #
  26 # CHECK:      <loc>:
  27 # CHECK-NEXT:   [[LOC]]:      nop
  28 # CHECK-EMPTY:
  29 # CHECK-NEXT: Disassembly of section .plt:
  30 # CHECK-EMPTY:
  31 # CHECK-NEXT: <.plt>:
  32 # CHECK-NEXT:   {{.*}}:       lui     $gp, 0x3
  33 # CHECK-NEXT:   {{.*}}:       lw      $25, {{.*}}($gp)
  34 # CHECK-NEXT:   {{.*}}:       addiu   $gp, $gp, {{.*}}
  35 # CHECK-NEXT:   {{.*}}:       subu    $24, $24, $gp
  36 # CHECK-NEXT:   {{.*}}:       move    $15, $ra
  37 # CHECK-NEXT:   {{.*}}:       srl     $24, $24, 0x2
  38 # CHECK-NEXT:   {{.*}}:       jalr    $25
  39 # CHECK-NEXT:   {{.*}}:       addiu   $24, $24, -0x2
  40 # CHECK-NEXT:   [[FOO0]]:     lui     $15, 0x3
  41 # CHECK-NEXT:   {{.*}}:       lw      $25, {{.*}}($15)
  42 # CHECK-NEXT:   {{.*}}:       jr      $25
  43 # CHECK-NEXT:   {{.*}}:       addiu   $24, $15, {{.*}}
  44
  45 # REL:      Name: .plt
  46 # REL-NEXT: Type: SHT_PROGBITS
  47 # REL-NEXT: Flags [ (0x6)
  48 # REL-NEXT:   SHF_ALLOC
  49 # REL-NEXT:   SHF_EXECINSTR
  50 # REL-NEXT: ]
  51 # REL-NEXT: Address: 0x[[PLTADDR:[0-9A-F]+]]
  52
  53 # REL:      Name: .got.plt
  54 # REL-NEXT: Type: SHT_PROGBITS
  55 # REL-NEXT: Flags [ (0x3)
  56 # REL-NEXT:   SHF_ALLOC
  57 # REL-NEXT:   SHF_WRITE
  58 # REL-NEXT: ]
  59 # REL-NEXT: Address: 0x[[GOTPLTADDR:[0-9A-F]+]]
  60
  61 # REL: 0x70000032  MIPS_PLTGOT  0x[[GOTPLTADDR]]
  62
  63 # REL: Relocations [
  64 # REL-NEXT:   Section (7) .rel.plt {
  65 # REL-NEXT:     0x[[PLTSLOT:[0-9A-F]+]] R_MIPS_JUMP_SLOT foo0
  66 # REL-NEXT:   }
  67 # REL-NEXT: ]
  68
  69 # REL:      Primary GOT {
  70 # REL:        Local entries [
  71 # REL-NEXT:   ]
  72 # REL-NEXT:   Global entries [
  73 # REL-NEXT:   ]
  74 # REL:      PLT GOT {
  75 # REL:        Entries [
  76 # REL-NEXT:     Entry {
  77 # REL-NEXT:       Address: 0x[[PLTSLOT]]
  78 # REL-NEXT:       Initial: 0x[[PLTADDR]]
  79 # REL-NEXT:       Value: 0x0
  80 # REL-NEXT:       Type: Function
  81 # REL-NEXT:       Section: Undefined
  82 # REL-NEXT:       Name: foo0
  83 # REL-NEXT:     }
  84 # REL-NEXT:   ]
  85
  86   .text
  87   .globl bar
  88 bar:
  89   jal loc         # R_MIPS_26 against .text + offset
  90
  91   .globl __start
  92 __start:
  93   jal bar         # R_MIPS_26 against global 'bar' from object file
  94   jal foo0        # R_MIPS_26 against 'foo0' from DSO
  95
  96 loc:
  97   nop