lld/test/ELF/ppc32-tls-ld.s

   1 # REQUIRES: ppc
   2 # RUN: llvm-mc -filetype=obj -triple=powerpc %s -o %t.o
   3 # RUN: echo '.globl __tls_get_addr; __tls_get_addr:' | llvm-mc -filetype=obj -triple=powerpc - -o %tga.o
   4
   5 # RUN: ld.lld -shared %t.o -o %t.so
   6 # RUN: llvm-readobj -r %t.so | FileCheck --check-prefix=LD-REL %s
   7 # RUN: llvm-objdump -d --no-show-raw-insn %t.so | FileCheck --check-prefix=LD %s
   8
   9 # RUN: ld.lld %t.o %tga.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
  13 # LD-REL:      .rela.dyn {
  14 # LD-REL-NEXT:   0x202D0 R_PPC_DTPMOD32 - 0x0
  15 # LD-REL-NEXT: }
  16
  17 ## &.got[3] - _GLOBAL_OFFSET_TABLE_ = 12
  18 # LD:      addi 3, 30, 12
  19 # LD-NEXT: bl 0x101f8
  20 ## a@dtprel = st_value(a)-0x8000 = 65540-0x8000 = 65536*1-32764
  21 ## b@dtprel = st_value(a)-0x8000 = 131080-0x8000 = 65536*2-32760
  22 # LD-NEXT: addis 9, 3, 1
  23 # LD-NEXT: addis 10, 3, 2
  24 # LD-NEXT: addi 9, 9, -32764
  25 # LD-NEXT: addi 10, 10, -32760
  26 ## small@dtprel = st_value(small)-0x8000 = 4-0x8000 = -32764
  27 # LD-NEXT: addi 9, 3, -32764
  28
  29 ## Check that b@got@tlsld does not allocate another GOT entry.
  30 ## It shares In.Got->TlsIndexOff allocated when processing a@got@tlsld.
  31 ## &.got[3] - _GLOBAL_OFFSET_TABLE_ = 12
  32 # LD-NEXT: addi 3, 9, 12
  33 # LD-NEXT: bl 0x101f8
  34 ## b@dtprel = st_value(a)-0x8000 = 131080-0x8000 = 65536*2-32760
  35 # LD-NEXT: addis 29, 3, 2
  36 # LD-NEXT: addi 29, 29, -32760
  37
  38 ## When producing an executable, the LD code sequence can be relaxed to LE.
  39 ## It is the same as GD->LE.
  40 ## tpoff(_TLS_MODULE_BASE_) = 0, tpoff(a) = -8, tpoff(b) = -4
  41
  42 # NOREL: no relocations
  43
  44 ## Set r3 to r2+4096
  45 # LE:      addis 3, 2, 0
  46 # LE-NEXT: addi 3, 3, 4096
  47 ## a@tprel = 65540-0x7000 = 65536*1-32764
  48 ## b@tprel = 131080-0x7000 = 65536*2-32760
  49 # LE-NEXT: addis 9, 3, 1
  50 # LE-NEXT: addis 10, 3, 2
  51 # LE-NEXT: addi 9, 9, -32764
  52 # LE-NEXT: addi 10, 10, -32760
  53 ## small@tprel = 4-0x7000 = -32764
  54 # LE-NEXT: addi 9, 3, -32764
  55
  56 ## Set r3 to r2+4096
  57 # LE-NEXT: addis 3, 2, 0
  58 # LE-NEXT: addi 3, 3, 4096
  59 ## b@tprel = 131080-0x7000 = 65536*2-32760
  60 # LE-NEXT: addis 29, 3, 2
  61 # LE-NEXT: addi 29, 29, -32760
  62
  63 addi 3, 30, a@got@tlsld
  64 bl __tls_get_addr(a@tlsld)
  65 addis 9, 3, a@dtprel@ha
  66 addis 10, 3, b@dtprel@ha
  67 addi 9, 9, a@dtprel@l
  68 addi 10, 10, b@dtprel@l
  69 addi 9, 3, small@dtprel
  70
  71 addi 3, 9, b@got@tlsld
  72 bl __tls_get_addr(b@tlsld)
  73 addis 29, 3, b@dtprel@ha
  74 addi 29, 29, b@dtprel@l
  75
  76 .section .tbss
  77 .zero 4
  78 small:
  79 .zero 65536
  80 a:
  81 .zero 65540
  82 b: