diff options
Diffstat (limited to 'lib/builtins/ppc/restFP.S')
| -rw-r--r-- | lib/builtins/ppc/restFP.S | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/lib/builtins/ppc/restFP.S b/lib/builtins/ppc/restFP.S new file mode 100644 index 000000000000..95032897c0da --- /dev/null +++ b/lib/builtins/ppc/restFP.S @@ -0,0 +1,43 @@ +//===-- restFP.S - Implement restFP ---------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "../assembly.h" + +// +// Helper function used by compiler to restore ppc floating point registers at +// the end of the function epilog. This function returns to the address +// in the LR slot. So a function epilog must branch (b) not branch and link +// (bl) to this function. +// If the compiler wants to restore f27..f31, it does a "b restFP+52" +// +// This function should never be exported by a shared library. Each linkage +// unit carries its own copy of this function. +// +DEFINE_COMPILERRT_PRIVATE_FUNCTION_UNMANGLED(restFP) + lfd f14,-144(r1) + lfd f15,-136(r1) + lfd f16,-128(r1) + lfd f17,-120(r1) + lfd f18,-112(r1) + lfd f19,-104(r1) + lfd f20,-96(r1) + lfd f21,-88(r1) + lfd f22,-80(r1) + lfd f23,-72(r1) + lfd f24,-64(r1) + lfd f25,-56(r1) + lfd f26,-48(r1) + lfd f27,-40(r1) + lfd f28,-32(r1) + lfd f29,-24(r1) + lfd f30,-16(r1) + lfd f31,-8(r1) + lwz r0,8(r1) + mtlr r0 + blr |