lld/test/ELF/systemz-tls-ld.s

   1 # REQUIRES: systemz
   2 # RUN: llvm-mc -filetype=obj -triple=s390x-unknown-linux %s -o %t.o
   3
   4 # RUN: ld.lld -shared %t.o -o %t.so
   5 # RUN: llvm-readelf -r %t.so | FileCheck --check-prefix=LD-REL %s
   6 # RUN: llvm-objdump -d --no-show-raw-insn %t.so | FileCheck --check-prefix=LD %s
   7 # RUN: llvm-objdump --section .data.rel.ro --full-contents %t.so | FileCheck --check-prefix=LD-DATA %s
   8
   9 # RUN: ld.lld %t.o -o %t
  10 # RUN: llvm-readelf -r %t | FileCheck --check-prefix=NOREL %s
  11 # RUN: llvm-objdump -d --no-show-raw-insn %t | FileCheck --check-prefix=LE %s
  12 # RUN: llvm-objdump --section .data.rel.ro --full-contents %t | FileCheck --check-prefix=LE-DATA %s
  13
  14 # LD-REL: Relocation section '.rela.dyn' at offset {{.*}} contains 1 entries:
  15 # LD-REL: 00000000000024f8 0000000000000036 R_390_TLS_DTPMOD 0
  16
  17 ## _GLOBAL_OFFSET_TABLE is at 0x24e0
  18 # LD:      larl    %r12, 0x24e0
  19
  20 ## GOT offset of the LDM TLS module ID is at 0x23e0
  21 # LD-NEXT: lgrl    %r2, 0x23e0
  22 # LD-NEXT: brasl   %r14, 0x13c0
  23 # LD-NEXT: la      %r2, 0(%r2,%r7)
  24
  25 ## DTP offset for a is at 0x23e8
  26 # LD-NEXT: lgrl    %r1, 0x23e8
  27 # LD-NEXT: lgf     %r1, 0(%r1,%r2)
  28
  29 ## DTP offset for b is at 0x23f0
  30 # LD-NEXT: lgrl    %r1, 0x23f0
  31 # LD-NEXT: lgf     %r1, 0(%r1,%r2)
  32
  33 ## DTP offset for c is at 0x23f8
  34 # LD-NEXT: lgrl    %r1, 0x23f8
  35 # LD-NEXT: lgf     %r1, 0(%r1,%r2)
  36
  37 ## Constant pool holding GOT offsets of TLS module ID and DTP offsets:
  38 # TLS module ID: 0x24f8 / 0x18
  39 # a: 8
  40 # b: 12
  41 # c: 16
  42 # LD-DATA: 23e0 00000000 00000018 00000000 00000008
  43 # LD-DATA: 23f0 00000000 0000000c 00000000 00000010
  44
  45 # NOREL: no relocations
  46
  47 ## _GLOBAL_OFFSET_TABLE is at 0x1002230
  48 # LE:      larl    %r12, 0x1002230
  49
  50 ## GOT offset of the LDM TLS module ID is at 0x1002210
  51 # LE-NEXT: lgrl    %r2, 0x1002210
  52 # LE-NEXT: brcl    0,
  53 # LE-NEXT: la      %r2, 0(%r2,%r7)
  54
  55 ## TP offset for a is at 0x1002218
  56 # LE-NEXT: lgrl    %r1, 0x1002218
  57 # LE-NEXT: lgf     %r1, 0(%r1,%r2)
  58
  59 ## TP offset for b is at 0x1002220
  60 # LE-NEXT: lgrl    %r1, 0x1002220
  61 # LE-NEXT: lgf     %r1, 0(%r1,%r2)
  62
  63 ## TP offset for c is at 0x1002228
  64 # LE-NEXT: lgrl    %r1, 0x1002228
  65 # LE-NEXT: lgf     %r1, 0(%r1,%r2)
  66
  67 ## zeroed LDM / TP offsets:
  68 # LDM TLS: 0
  69 # a: -8
  70 # b: -4
  71 # c: 0
  72 # LE-DATA: 1002210 00000000 00000000 ffffffff fffffff8
  73 # LE-DATA: 1002220 ffffffff fffffffc 00000000 00000000
  74
  75
  76 ear     %r7,%a0
  77 sllg    %r7,%r1,32
  78 ear     %r7,%a1
  79 larl    %r12,_GLOBAL_OFFSET_TABLE_
  80
  81 lgrl    %r2,.LC0
  82 brasl   %r14,__tls_get_offset@PLT:tls_ldcall:a
  83 la      %r2,0(%r2,%r7)
  84
  85 lgrl    %r1, .LC1
  86 lgf     %r1,0(%r1,%r2)
  87
  88 lgrl    %r1, .LC2
  89 lgf     %r1,0(%r1,%r2)
  90
  91 lgrl    %r1, .LC3
  92 lgf     %r1,0(%r1,%r2)
  93
  94         .section        .data.rel.ro,"aw"
  95         .align  8
  96 .LC0:
  97         .quad   a@TLSLDM
  98 .LC1:
  99         .quad   a@DTPOFF
 100 .LC2:
 101         .quad   b@DTPOFF
 102 .LC3:
 103         .quad   c@DTPOFF
 104
 105         .section .tbss
 106         .globl a
 107         .globl b
 108         .globl c
 109         .zero 8
 110 a:
 111         .zero 4
 112 b:
 113         .zero 4
 114 c: