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

   1 # REQUIRES: ppc
   2
   3 # RUN: llvm-mc -filetype=obj -triple=powerpc64-pc-freebsd13.0 %s -o %t.o
   4 # RUN: ld.lld %t.o -o %t
   5 # RUN: llvm-objdump -d --no-show-raw-insn %t | FileCheck %s
   6
   7 ## .init consists of sections from several object files. Sections other than the
   8 ## last one do not have a terminator. Check we do not create a long branch stub
   9 ## in the middle.
  10 ## We currently use thunk section spacing to ensure the stub is in the end. This
  11 ## is not foolproof but good enough to not break in practice.
  12
  13 # CHECK: Disassembly of section .init:
  14 # CHECK-EMPTY:
  15 # CHECK-LABEL: <_init>:
  16 # CHECK:         blr
  17 # CHECK-NEXT:    trap
  18 # CHECK-NEXT:    trap
  19 # CHECK-EMPTY:
  20 # CHECK-LABEL: <__long_branch_foo>:
  21
  22 .globl foo
  23 foo:
  24   .space 0x2000000
  25   blr
  26
  27 .section .init,"ax",@progbits,unique,0
  28 .globl _init
  29 _init:
  30   stdu 1, -48(1)
  31   mflr 0
  32   std 0, 64(1)
  33
  34 .section .init,"ax",@progbits,unique,1
  35   bl foo
  36   nop
  37
  38 .section .init,"ax",@progbits,unique,2
  39   bl foo
  40   nop
  41
  42 .section .init,"ax",@progbits,unique,3
  43   ld 1, 0(1)
  44   ld 0, 16(1)
  45   mtlr 0
  46   blr