lld/test/ELF/ppc64-long-branch-pi.s

   1 # REQUIRES: ppc
   2 # RUN: llvm-mc -filetype=obj -triple=ppc64le %s -o %t.o
   3 # RUN: echo 'SECTIONS { \
   4 # RUN:       .text_low 0x2000: { *(.text_low) } \
   5 # RUN:       .text_high 0x2002000 : { *(.text_high) } \
   6 # RUN:       }' > %t.script
   7 # RUN: ld.lld -pie -T %t.script %t.o -o %t
   8 # RUN: llvm-readelf -S %t | FileCheck --check-prefix=SEC-PIE %s
   9 # RUN: llvm-readobj -r %t | FileCheck --check-prefix=RELOC %s
  10 # RUN: llvm-objdump -d --no-show-raw-insn %t | FileCheck %s
  11
  12 ## RELATIVE relocs relocating NOBITS .branch_lt do not cause --check-dynamic-relocations errors.
  13 # RUN: ld.lld -shared -T %t.script %t.o -o %t.so --apply-dynamic-relocs --check-dynamic-relocations
  14 # RUN: llvm-readelf -S %t.so | FileCheck --check-prefix=SEC-SHARED %s
  15 # RUN: llvm-objdump -d --no-show-raw-insn %t.so | FileCheck %s
  16
  17 # SEC-PIE:    Name       Type     Address          Off     Size   ES Flg Lk Inf Al
  18 # SEC-PIE:    .got       PROGBITS 0000000002002110 2012110 000008 00  WA  0   0  8
  19 # SEC-PIE:    .branch_lt NOBITS   0000000002002120 2012120 000020 00  WA  0   0  8
  20
  21 # SEC-SHARED: Name       Type     Address          Off     Size   ES Flg Lk Inf Al
  22 # SEC-SHARED: .got       PROGBITS 00000000020020f0 20120f0 000008 00  WA  0   0  8
  23 # SEC-SHARED: .branch_lt NOBITS   0000000002002100 2012100 000020 00  WA  0   0  8
  24
  25 # RELOC:      .rela.dyn {
  26 # RELOC-NEXT:   0x2002118 R_PPC64_RELATIVE - 0x2012110
  27 # RELOC-NEXT:   0x2002120 R_PPC64_RELATIVE - 0x2002000
  28 # RELOC-NEXT:   0x2002128 R_PPC64_RELATIVE - 0x2002008
  29 # RELOC-NEXT:   0x2002130 R_PPC64_RELATIVE - 0x200200C
  30 # RELOC-NEXT:   0x2002138 R_PPC64_RELATIVE - 0x2000
  31 # RELOC-NEXT: }
  32
  33 # CHECK:      <_start>:
  34 # CHECK-NEXT:     2000:       bl 0x2010
  35 # CHECK-NEXT:                 bl 0x2002000
  36 # CHECK-NEXT:                 bl 0x2030
  37 # CHECK-NEXT:                 bl 0x2050
  38
  39 ## &.branch_lt[0] - .TOC. = .branch_lt - (.got+0x8000) = -32752
  40 # CHECK:      <__long_branch_>:
  41 # CHECK-NEXT:     2010:       addis 12, 2, 0
  42 # CHECK-NEXT:                 ld 12, -32752(12)
  43 # CHECK-NEXT:                 mtctr 12
  44 # CHECK-NEXT:                 bctr
  45
  46 ## &.branch_lt[1] - .TOC. = .branch_lt - (.got+0x8000) = -32744
  47 # CHECK:      <__long_branch_>:
  48 # CHECK-NEXT:     2030:       addis 12, 2, 0
  49 # CHECK-NEXT:                 ld 12, -32744(12)
  50 # CHECK-NEXT:                 mtctr 12
  51 # CHECK-NEXT:                 bctr
  52
  53 ## &.branch_lt[2] - .TOC. = .branch_lt - (.got+0x8000) = -32736
  54 # CHECK:      <__long_branch_>:
  55 # CHECK-NEXT:     2050:       addis 12, 2, 0
  56 # CHECK-NEXT:                 ld 12, -32736(12)
  57 # CHECK-NEXT:                 mtctr 12
  58 # CHECK-NEXT:                 bctr
  59
  60 .section .text_low, "ax", %progbits
  61 .globl _start
  62 _start:
  63 bl .text_high     # Need a thunk
  64 bl .text_high
  65 bl .text_high+8   # Need a thunk
  66 bl .text_high+0xc # Need a thunk
  67
  68 # CHECK:      <high_target>:
  69 # CHECK-NEXT:  2002000:   bl 0x2004
  70 # CHECK-NEXT:             bl 0x2004
  71 # CHECK-NEXT:             bl 0x2002010
  72
  73 ## &.branch_lt[3] - .TOC. = .branch_lt - (.got+0x8000) = -32728
  74 # CHECK:      <__long_branch_>:
  75 # CHECK-NEXT:  2002010:       addis 12, 2, 0
  76 # CHECK-NEXT:                 ld 12, -32728(12)
  77 # CHECK-NEXT:                 mtctr 12
  78 # CHECK-NEXT:                 bctr
  79
  80 .section .text_high, "ax", %progbits
  81 high_target:
  82 bl .text_low+4
  83 bl .text_low+4
  84 bl .text_low      # Need a thunk
  85 blr
  86
  87 ## Force creation of .got
  88 ## The R_PPC64_RELATIVE makes sure .rela.dyn survives removeUnusedSyntheticSections.
  89 .section .data
  90 .quad .TOC.@tocbase