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

   1 # REQUIRES: riscv
   2 # RUN: echo '.tbss; .globl b, c; b: .zero 4; c:' > %t.s
   3 # RUN: echo '.globl __tls_get_addr; __tls_get_addr:' > %tga.s
   4
   5 ## RISC-V psABI doesn't specify TLS relaxation. Though the code sequences are not
   6 ## relaxed, dynamic relocations can be omitted for LD->LE relaxation.
   7 ## LD uses the same relocation as GD: R_RISCV_GD_HI20, the difference is that it
   8 ## references a local symbol (.LANCHOR0).
   9
  10 # RUN: llvm-mc -filetype=obj -triple=riscv32 -position-independent %s -o %t.32.o
  11 # RUN: llvm-mc -filetype=obj -triple=riscv32 %tga.s -o %tga.o
  12 ## rv32 LD
  13 # RUN: ld.lld -shared %t.32.o -o %t.32.so
  14 # RUN: llvm-readobj -r %t.32.so | FileCheck --check-prefix=LD32-REL %s
  15 # RUN: llvm-readelf -x .got %t.32.so | FileCheck --check-prefix=LD32-GOT %s
  16 # RUN: llvm-objdump -d --no-show-raw-insn %t.32.so | FileCheck --check-prefixes=LD,LD32 %s
  17 ## rv32 LD -> LE
  18 # RUN: ld.lld %t.32.o %tga.o -o %t.32
  19 # RUN: llvm-readelf -r %t.32 | FileCheck --check-prefix=NOREL %s
  20 # RUN: llvm-readelf -x .got %t.32 | FileCheck --check-prefix=LE32-GOT %s
  21 # RUN: llvm-objdump -d --no-show-raw-insn %t.32 | FileCheck --check-prefixes=LE,LE32 %s
  22
  23 # RUN: llvm-mc -filetype=obj -triple=riscv64 -position-independent %s -o %t.64.o
  24 # RUN: llvm-mc -filetype=obj -triple=riscv64 %tga.s -o %tga.o
  25 ## rv64 LD
  26 # RUN: ld.lld -shared %t.64.o -o %t.64.so
  27 # RUN: llvm-readobj -r %t.64.so | FileCheck --check-prefix=LD64-REL %s
  28 # RUN: llvm-readelf -x .got %t.64.so | FileCheck --check-prefix=LD64-GOT %s
  29 # RUN: llvm-objdump -d --no-show-raw-insn %t.64.so | FileCheck --check-prefixes=LD,LD64 %s
  30 ## rv64 LD -> LE
  31 # RUN: ld.lld %t.64.o %tga.o -o %t.64
  32 # RUN: llvm-readelf -r %t.64 | FileCheck --check-prefix=NOREL %s
  33 # RUN: llvm-readelf -x .got %t.64 | FileCheck --check-prefix=LE64-GOT %s
  34 # RUN: llvm-objdump -d --no-show-raw-insn %t.64 | FileCheck --check-prefixes=LE,LE64 %s
  35
  36 ## a@dtprel = st_value(a)-0x800 = 0xfffff808 is a link-time constant.
  37 # LD32-REL:      .rela.dyn {
  38 # LD32-REL-NEXT:   0x22AC
  39 # LD32-REL-NEXT:   0x22B0 R_RISCV_TLS_DTPMOD32 - 0x0
  40 # LD32-REL-NEXT: }
  41 # LD32-GOT:      section '.got':
  42 # LD32-GOT-NEXT: 0x000022a8 30220000 00000000 00000000 00f8ffff
  43
  44 # LD64-REL:      .rela.dyn {
  45 # LD64-REL-NEXT:   0x2448
  46 # LD64-REL-NEXT:   0x2450 R_RISCV_TLS_DTPMOD64 - 0x0
  47 # LD64-REL-NEXT: }
  48 # LD64-GOT:      section '.got':
  49 # LD64-GOT-NEXT: 0x00002440 50230000 00000000 00000000 00000000
  50 # LD64-GOT-NEXT: 0x00002450 00000000 00000000 00f8ffff ffffffff
  51
  52 ## rv32: &DTPMOD(a) - . = 0x22b0 - 0x11d8 = 4096*1+216
  53 ## rv64: &DTPMOD(a) - . = 0x2450 - 0x12f8 = 4096*1+344
  54 # LD32:      11d8: auipc a0, 0x1
  55 # LD32-NEXT:       addi a0, a0, 0xd8
  56 # LD64:      12f8: auipc a0, 0x1
  57 # LD64-NEXT:       addi a0, a0, 0x158
  58 # LD-NEXT:         auipc ra, 0x0
  59 # LD-NEXT:         jalr 0x40(ra)
  60
  61 # NOREL: no relocations
  62
  63 ## a is local - its DTPMOD/DTPREL slots are link-time constants.
  64 ## a@dtpmod = 1 (main module)
  65 # LE32-GOT: section '.got':
  66 # LE32-GOT-NEXT: 0x00012134 00000000 34210100 01000000 00f8ffff
  67
  68 # LE64-GOT: section '.got':
  69 # LE64-GOT-NEXT: 0x000121e8 00000000 00000000 e8210100 00000000
  70 # LE64-GOT-NEXT: 0x000121f8 01000000 00000000 00f8ffff ffffffff
  71
  72 ## rv32: DTPMOD(.LANCHOR0) - . = 0x1213c - 0x11114 = 4096*1+40
  73 ## rv64: DTPMOD(.LANCHOR0) - . = 0x121f8 - 0x111c8 = 4096*1+48
  74 # LE32:      11114: auipc a0, 0x1
  75 # LE32-NEXT:        addi a0, a0, 0x28
  76 # LE64:      111c8: auipc a0, 0x1
  77 # LE64-NEXT:        addi a0, a0, 0x30
  78 # LE-NEXT:          auipc ra, 0x0
  79 # LE-NEXT:          jalr 0x18(ra)
  80
  81 la.tls.gd a0, .LANCHOR0
  82 call __tls_get_addr@plt
  83 lw a4, 0x0(a0)
  84 lh a0, 0x4(a0)
  85
  86 ## This is irrelevant to TLS. We use it to take 2 GOT slots to check DTPREL
  87 ## offsets are correct.
  88 la a5, _GLOBAL_OFFSET_TABLE_
  89
  90 .section .tbss,"awT",@nobits
  91 .set .LANCHOR0, . + 0
  92 .zero 8