lld/test/ELF/x86-64-tlsdesc-gd.s

   1 # REQUIRES: x86
   2 # RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
   3 # RUN: echo '.tbss; .globl c; c: .zero 4' | llvm-mc -filetype=obj -triple=x86_64 - -o %t1.o
   4 # RUN: ld.lld -shared -soname=t1.so %t1.o -o %t1.so
   5
   6 # RUN: ld.lld -shared %t.o %t1.o -o %t.so
   7 # RUN: llvm-readobj -r -x .got %t.so | FileCheck --check-prefix=GD-RELA %s
   8 # RUN: llvm-objdump --no-print-imm-hex -d --no-show-raw-insn %t.so | FileCheck --check-prefix=GD %s
   9
  10 # RUN: ld.lld -shared %t.o %t1.o -o %t-rel.so -z rel
  11 # RUN: llvm-readobj -r -x .got %t-rel.so | FileCheck --check-prefix=GD-REL %s
  12
  13 # RUN: ld.lld %t.o %t1.o -o %t
  14 # RUN: llvm-readelf -r %t | FileCheck --check-prefix=NOREL %s
  15 # RUN: llvm-objdump --no-print-imm-hex -d --no-show-raw-insn %t | FileCheck --check-prefix=LE %s
  16
  17 # RUN: ld.lld %t.o %t1.so -o %t
  18 # RUN: llvm-readobj -r %t | FileCheck --check-prefix=IE-REL %s
  19 # RUN: llvm-objdump --no-print-imm-hex -d --no-show-raw-insn %t | FileCheck --check-prefix=IE %s
  20
  21 # GD-RELA:      .rela.dyn {
  22 # GD-RELA-NEXT:   0x23D0 R_X86_64_TLSDESC - 0xB
  23 # GD-RELA-NEXT:   0x23B0 R_X86_64_TLSDESC a 0x0
  24 # GD-RELA-NEXT:   0x23C0 R_X86_64_TLSDESC c 0x0
  25 # GD-RELA-NEXT: }
  26 # GD-RELA:      Hex dump of section '.got':
  27 # GD-RELA-NEXT: 0x000023b0 00000000 00000000 00000000 00000000
  28 # GD-RELA-NEXT: 0x000023c0 00000000 00000000 00000000 00000000
  29 # GD-RELA-NEXT: 0x000023d0 00000000 00000000 00000000 00000000
  30
  31 # GD-REL:       .rel.dyn {
  32 # GD-REL-NEXT:    0x23B8 R_X86_64_TLSDESC -
  33 # GD-REL-NEXT:    0x2398 R_X86_64_TLSDESC a
  34 # GD-REL-NEXT:    0x23A8 R_X86_64_TLSDESC c
  35 # GD-REL-NEXT:  }
  36 # GD-REL:       Hex dump of section '.got':
  37 # GD-REL-NEXT:  0x00002398 00000000 00000000 00000000 00000000
  38 # GD-REL-NEXT:  0x000023a8 00000000 00000000 00000000 00000000
  39 # GD-REL-NEXT:  0x000023b8 00000000 00000000 0b000000 00000000
  40
  41 ## &.rela.dyn[a]-pc = 0x23B0-0x12e7 = 4297
  42 # GD:            leaq 4297(%rip), %rax
  43 # GD-NEXT: 12e7: callq *(%rax)
  44 # GD-NEXT:       movl %fs:(%rax), %eax
  45
  46 ## &.rela.dyn[b]-pc = 0x23D0-0x12f3 = 4317
  47 # GD-NEXT:       leaq 4317(%rip), %rcx
  48 # GD-NEXT: 12f3: movq %rcx, %rax
  49 # GD-NEXT:       callq *(%rax)
  50 # GD-NEXT:       movl %fs:(%rax), %eax
  51
  52 ## &.rela.dyn[c]-pc = 0x23C0-0x1302 = 4286
  53 # GD-NEXT:       leaq 4286(%rip), %r15
  54 # GD-NEXT: 1302: movq %r15, %rax
  55 # GD-NEXT:       callq *(%rax)
  56 # GD-NEXT:       movl %fs:(%rax), %eax
  57
  58 # NOREL: no relocations
  59
  60 ## tpoff(a) = st_value(a) - tls_size = -8
  61 # LE:      movq $-8, %rax
  62 # LE-NEXT: nop
  63 # LE-NEXT: movl %fs:(%rax), %eax
  64 ## tpoff(b) = st_value(b) - tls_size = -5
  65 # LE:      movq $-5, %rcx
  66 # LE-NEXT: movq %rcx, %rax
  67 # LE-NEXT: nop
  68 # LE-NEXT: movl %fs:(%rax), %eax
  69 ## tpoff(c) = st_value(c) - tls_size = -4
  70 # LE:      movq $-4, %r15
  71 # LE-NEXT: movq %r15, %rax
  72 # LE-NEXT: nop
  73 # LE-NEXT: movl %fs:(%rax), %eax
  74
  75 # IE-REL:      .rela.dyn {
  76 # IE-REL-NEXT:   0x202378 R_X86_64_TPOFF64 c 0x0
  77 # IE-REL-NEXT: }
  78
  79 ## a is relaxed to use LE.
  80 # IE:              movq $-4, %rax
  81 # IE-NEXT:         nop
  82 # IE-NEXT:         movl %fs:(%rax), %eax
  83 # IE-NEXT:         movq $-1, %rcx
  84 # IE-NEXT:         movq %rcx, %rax
  85 # IE-NEXT:         nop
  86 # IE-NEXT:         movl %fs:(%rax), %eax
  87 ## &.rela.dyn[c]-pc = 0x202378 - 0x2012aa = 4302
  88 # IE-NEXT:         movq 4302(%rip), %r15
  89 # IE-NEXT: 2012aa: movq %r15, %rax
  90 # IE-NEXT:         nop
  91 # IE-NEXT:         movl %fs:(%rax), %eax
  92
  93 leaq a@tlsdesc(%rip), %rax
  94 call *a@tlscall(%rax)
  95 movl %fs:(%rax), %eax
  96
  97 ## leaq/call may not be adjacent:  https://gitlab.freedesktop.org/mesa/mesa/-/issues/5665
  98 ## Test non-RAX registers as well.
  99 leaq b@tlsdesc(%rip), %rcx
 100 movq %rcx, %rax
 101 call *b@tlscall(%rax)
 102 movl %fs:(%rax), %eax
 103
 104 leaq c@tlsdesc(%rip), %r15
 105 movq %r15, %rax
 106 call *c@tlscall(%rax)
 107 movl %fs:(%rax), %eax
 108
 109 .section .tbss
 110 .globl a
 111 .zero 8
 112 a:
 113 .zero 3
 114 b:
 115 .zero 1