lld/test/ELF/aarch64-tlsdesc.s

   1 // REQUIRES: aarch64
   2 // RUN: llvm-mc -filetype=obj -triple=aarch64-pc-linux %s -o %t.o
   3 // RUN: ld.lld --hash-style=sysv -shared %t.o -o %t.so
   4 // RUN: llvm-objdump --no-print-imm-hex -d --no-show-raw-insn %t.so | FileCheck %s
   5 // RUN: llvm-readobj -r %t.so | FileCheck --check-prefix=REL %s
   6
   7         .text
   8         adrp    x0, :tlsdesc:a
   9         ldr     x1, [x0, :tlsdesc_lo12:a]
  10         add     x0, x0, :tlsdesc_lo12:a
  11         .tlsdesccall a
  12         blr     x1
  13
  14 // Create relocation against local TLS symbols where linker should
  15 // create target specific dynamic TLSDESC relocation where addend is
  16 // the symbol VMA in tls block.
  17
  18 // CHECK:      10298: adrp    x0, 0x20000
  19 // CHECK-NEXT: 1029c: ldr     x1, [x0, #856]
  20 // CHECK-NEXT: 102a0: add     x0, x0, #856
  21 // CHECK-NEXT: 102a4: blr     x1
  22
  23         adrp    x0, :tlsdesc:local1
  24         ldr     x1, [x0, :tlsdesc_lo12:local1]
  25         add     x0, x0, :tlsdesc_lo12:local1
  26         .tlsdesccall a
  27         blr     x1
  28
  29 // CHECK:      102a8: adrp    x0, 0x20000
  30 // CHECK-NEXT: 102ac: ldr     x1, [x0, #872]
  31 // CHECK-NEXT: 102b0: add     x0, x0, #872
  32 // CHECK-NEXT: 102b4: blr     x1
  33
  34         adrp    x0, :tlsdesc:local2
  35         ldr     x1, [x0, :tlsdesc_lo12:local2]
  36         add     x0, x0, :tlsdesc_lo12:local2
  37         .tlsdesccall a
  38         blr     x1
  39
  40 // CHECK:      102b8: adrp    x0, 0x20000
  41 // CHECK-NEXT: 102bc: ldr     x1, [x0, #888]
  42 // CHECK-NEXT: 102c0: add     x0, x0, #888
  43 // CHECK-NEXT: 102c4: blr     x1
  44
  45         .section .tbss,"awT",@nobits
  46         .type   local1,@object
  47         .p2align 2
  48 local1:
  49         .word   0
  50         .size   local1, 4
  51
  52         .type   local2,@object
  53         .p2align 3
  54 local2:
  55         .xword  0
  56         .size   local2, 8
  57
  58
  59 // 0x1000 + 4096 + 160 = 0x20A0
  60 // 0x1000 + 4096 + 176 = 0x20B0
  61 // 0x1000 + 4096 + 144 = 0x2090
  62
  63 // R_AARCH64_TLSDESC - 0x0 -> start of tls block
  64 // R_AARCH64_TLSDESC - 0x8 -> align (sizeof (local1), 8)
  65
  66 // REL:      Relocations [
  67 // REL-NEXT:   Section (4) .rela.dyn {
  68 // REL-NEXT:     0x20368 R_AARCH64_TLSDESC - 0x0
  69 // REL-NEXT:     0x20378 R_AARCH64_TLSDESC - 0x8
  70 // REL-NEXT:     0x20358 R_AARCH64_TLSDESC a 0x0
  71 // REL-NEXT:   }
  72 // REL-NEXT: ]