lld/test/ELF/ppc32-long-thunk.s

   1 # REQUIRES: ppc
   2 # RUN: echo 'SECTIONS { \
   3 # RUN:       .text_low 0x2000: { *(.text_low) } \
   4 # RUN:       .text_high 0x2002000 : { *(.text_high) } \
   5 # RUN:       }' > %t.script
   6
   7 # RUN: llvm-mc -filetype=obj -triple=powerpc %s -o %t.o
   8 # RUN: ld.lld -T %t.script %t.o -o %t
   9 # RUN: llvm-readelf -r %t | FileCheck --check-prefix=SEC %s
  10 # RUN: llvm-objdump -d --no-show-raw-insn %t | FileCheck --check-prefixes=CHECK,PD %s
  11 # RUN: llvm-nm --no-sort %t | FileCheck --check-prefix=NM %s
  12
  13 # RUN: ld.lld -T %t.script -pie %t.o -o %t
  14 # RUN: llvm-readelf -r %t | FileCheck --check-prefix=SEC %s
  15 # RUN: llvm-objdump -d --no-show-raw-insn %t | FileCheck --check-prefixes=CHECK,PI %s
  16 # RUN: llvm-nm --no-sort %t | FileCheck --check-prefix=NM %s
  17
  18 # SEC: There are no relocations in this file.
  19
  20 # CHECK:      <_start>:
  21 # CHECK-NEXT:     2000: bl 0x2018
  22 # CHECK-NEXT:           bl 0x2018
  23 # CHECK-NEXT:           bl 0x2018
  24 # CHECK-NEXT:           bl 0x2002008
  25 # PD-NEXT:              bl 0x2028
  26 # PI-NEXT:              bl 0x2038
  27
  28 ## high = 0x02002008 = 65536*512+8200
  29 # PD:         <__LongThunk_high>:
  30 # PD-NEXT:        2018: lis 12, 512
  31 # PD-NEXT:              addi 12, 12, 8200
  32 # PD-NEXT:              mtctr 12
  33 # PD-NEXT:              bctr
  34
  35 ## .text_high+16 = 0x02002010 = 65536*512+8208
  36 # PD:         <__LongThunk_>:
  37 # PD-NEXT:        2028: lis 12, 512
  38 # PD-NEXT:              addi 12, 12, 8208
  39 # PD-NEXT:              mtctr 12
  40 # PD-NEXT:              bctr
  41
  42 ## high-0x2028 = 0x02002008-0x2020 = 65536*512-24
  43 # PI:         <__LongThunk_high>:
  44 # PI-NEXT:        2018: mflr 0
  45 # PI-NEXT:              bcl 20, 31, 0x2020
  46 # PI-NEXT:        2020: mflr 12
  47 # PI-NEXT:              addis 12, 12, 512
  48 # PI-NEXT:              addi 12, 12, -24
  49 # PI-NEXT:              mtlr 0
  50 # PI-NEXT:              mtctr 12
  51 # PI-NEXT:              bctr
  52
  53 ## .text_high+16-0x2048 = 0x02002010-0x2048 = 65536*512-48
  54 # PI:         <__LongThunk_>:
  55 # PI-NEXT:        2038: mflr 0
  56 # PI-NEXT:              bcl 20, 31, 0x2040
  57 # PI-NEXT:        2040: mflr 12
  58 # PI-NEXT:              addis 12, 12, 512
  59 # PI-NEXT:              addi 12, 12, -48
  60 # PI-NEXT:              mtlr 0
  61 # PI-NEXT:              mtctr 12
  62 # PI-NEXT:              bctr
  63
  64 .section .text_low, "ax", %progbits
  65 .globl _start
  66 _start:
  67 bl high@local     # Need a thunk
  68 bl high@local     # Need a thunk
  69 bl high+32768@plt # Need a thunk
  70 bl high
  71 bl .text_high+16  # Need a thunk
  72 blr
  73
  74 # PD:         02002008 <high>:
  75 # PD-NEXT:              bl 0x2008
  76 # PD-NEXT:              bl 0x2002010
  77 # PD:         <__LongThunk_>:
  78 # PD-NEXT:     2002010: lis 12, 0
  79 # PD-NEXT:              addi 12, 12, 8200
  80 # PD-NEXT:              mtctr 12
  81 # PD-NEXT:              bctr
  82
  83 .section .text_high, "ax", %progbits
  84 nop
  85 nop
  86 .globl high
  87 high:
  88 bl .text_low+8
  89 bl .text_low+8    # Need a thunk
  90
  91 # NM:      t __LongThunk_high
  92 # NM-NEXT: t __LongThunk_
  93 # NM-NEXT: t __LongThunk_
  94 # NM-NEXT: T _start
  95 # NM-NEXT: T high