src/compiler-rt/lib/builtins/ppc/saveFP.S

   1 //===-- saveFP.S - Implement saveFP ---------------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is dual licensed under the MIT and the University of Illinois Open
   6 // Source Licenses. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "../assembly.h"
  11
  12 //
  13 // Helper function used by compiler to save ppc floating point registers in
  14 // function prologs.  This routines also saves r0 in the LR slot.
  15 // If the compiler wants to save f27..f31, it does a "bl saveFP+52"
  16 //
  17 // This function should never be exported by a shared library.  Each linkage
  18 // unit carries its own copy of this function.
  19 //
  20 DEFINE_COMPILERRT_PRIVATE_FUNCTION_UNMANGLED(saveFP)
  21         stfd    f14,-144(r1)
  22         stfd    f15,-136(r1)
  23         stfd    f16,-128(r1)
  24         stfd    f17,-120(r1)
  25         stfd    f18,-112(r1)
  26         stfd    f19,-104(r1)
  27         stfd    f20,-96(r1)
  28         stfd    f21,-88(r1)
  29         stfd    f22,-80(r1)
  30         stfd    f23,-72(r1)
  31         stfd    f24,-64(r1)
  32         stfd    f25,-56(r1)
  33         stfd    f26,-48(r1)
  34         stfd    f27,-40(r1)
  35         stfd    f28,-32(r1)
  36         stfd    f29,-24(r1)
  37         stfd    f30,-16(r1)
  38         stfd    f31,-8(r1)
  39         stw      r0,8(r1)
  40         blr
  41
  42 NO_EXEC_STACK_DIRECTIVE
  43