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restFP.S revision 1.1.1.1.4.2 
      1 //===-- restFP.S - Implement restFP ---------------------------------------===//
      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 restore ppc floating point registers at
     14 // the end of the function epilog.  This function returns to the address
     15 // in the LR slot.  So a function epilog must branch (b) not branch and link
     16 // (bl) to this function.
     17 // If the compiler wants to restore f27..f31, it does a "b restFP+52"
     18 //
     19 // This function should never be exported by a shared library.  Each linkage
     20 // unit carries its own copy of this function.
     21 //
     22 DEFINE_COMPILERRT_PRIVATE_FUNCTION_UNMANGLED(restFP)
     23         lfd    f14,-144(r1)
     24         lfd    f15,-136(r1)
     25         lfd    f16,-128(r1)
     26         lfd    f17,-120(r1)
     27         lfd    f18,-112(r1)
     28         lfd    f19,-104(r1)
     29         lfd    f20,-96(r1)
     30         lfd    f21,-88(r1)
     31         lfd    f22,-80(r1)
     32         lfd    f23,-72(r1)
     33         lfd    f24,-64(r1)
     34         lfd    f25,-56(r1)
     35         lfd    f26,-48(r1)
     36         lfd    f27,-40(r1)
     37         lfd    f28,-32(r1)
     38         lfd    f29,-24(r1)
     39         lfd    f30,-16(r1)
     40         lfd    f31,-8(r1)
     41         lwz     r0,8(r1)
     42         mtlr	r0
     43         blr
     44