test/ExecutionEngine/RuntimeDyld/ARM/MachO_ARM_PIC_relocations.s

   1 # RUN: rm -rf %t && mkdir -p %t
   2 # RUN: llvm-mc -triple=armv7s-apple-ios7.0.0 -filetype=obj -o %t/foo.o %s
   3 # RUN: llvm-rtdyld -triple=armv7s-apple-ios7.0.0 -verify -check=%s %t/foo.o
   4
   5         .syntax unified
   6         .section        __TEXT,__text,regular,pure_instructions
   7         .globl  bar
   8         .align  2
   9 bar:
  10 # Check lower 16-bits of section difference relocation
  11 # rtdyld-check: decode_operand(insn1, 1) = (foo$non_lazy_ptr-(nextPC+8))[15:0]
  12 insn1:
  13         movw    r0, :lower16:(foo$non_lazy_ptr-(nextPC+8))
  14 # Check upper 16-bits of section difference relocation
  15 # rtdyld-check: decode_operand(insn2, 2) = (foo$non_lazy_ptr-(nextPC+8))[31:16]
  16 insn2:
  17         movt    r0, :upper16:(foo$non_lazy_ptr-(nextPC+8))
  18 nextPC:
  19         add     r1, r0, r0
  20
  21 # Check stub generation for external symbols by referencing a common symbol, 'baz'.
  22 # Check both the content of the stub, and the reference to the stub.
  23 # Stub should contain '0xe51ff004' (ldr pc, [pc, #-4]), followed by the target.
  24 #
  25 # rtdyld-check: *{4}(stub_addr(foo.o/__text, baz)) = 0xe51ff004
  26 # rtdyld-check: *{4}(stub_addr(foo.o/__text, baz) + 4) = baz
  27 #
  28 # rtdyld-check: decode_operand(insn3, 0) = stub_addr(foo.o/__text, baz) - (insn3 + 8)
  29 insn3:
  30         bl      baz
  31
  32 # Check stub generation for internal symbols by referencing 'bar'.
  33 # rtdyld-check: *{4}(stub_addr(foo.o/__text, bar) + 4) = bar
  34 insn4:
  35         bl      bar
  36         bx      lr
  37
  38 # Add 'aaa' to the common symbols to make sure 'baz' isn't at the start of the
  39 # section. This ensures that we test VANILLA relocation addends correctly.
  40         .comm   aaa, 4, 2
  41         .comm   baz, 4, 2
  42         .comm   foo, 4, 2
  43
  44         .section        __DATA,__data
  45         .globl  _a
  46         .align  2
  47 # rtdyld-check: *{4}bar_ofs = bar + 4
  48 bar_ofs:
  49         .long   bar + 4
  50
  51 # Check that the symbol pointer section entries are fixed up properly:
  52 # rtdyld-check: *{4}foo$non_lazy_ptr = foo
  53         .section        __DATA,__nl_symbol_ptr,non_lazy_symbol_pointers
  54         .align  2
  55 foo$non_lazy_ptr:
  56         .indirect_symbol        foo
  57         .long   0
  58
  59 .subsections_via_symbols