llvm/test/ExecutionEngine/RuntimeDyld/ARM/MachO_ARM_PIC_relocations.s

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