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| author | Daniel Dunbar <daniel@zuster.org> | 2009-06-26 16:47:03 +0000 |
|---|---|---|
| committer | Daniel Dunbar <daniel@zuster.org> | 2009-06-26 16:47:03 +0000 |
| commit | b3a6901e66f55b35aa9e01bcb24134e6a65ea004 (patch) | |
| tree | 4d57d73575ea3f7e30bf430920d6e96fa2a369c1 /lib/ppc/restFP.s | |
| parent | 8cbe163cba77c772621f89ddb33793ac170b1fa2 (diff) | |
Initial import of compiler-rt.
-
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@74292 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/ppc/restFP.s')
| -rw-r--r-- | lib/ppc/restFP.s | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/lib/ppc/restFP.s b/lib/ppc/restFP.s new file mode 100644 index 000000000..6b8428a57 --- /dev/null +++ b/lib/ppc/restFP.s @@ -0,0 +1,43 @@ +//===-- restFP.s - Implement restFP ---------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + + +// +// 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. +// + .globl restFP + .private_extern restFP +restFP: stfd f14,-144(r1) + stfd f15,-136(r1) + stfd f16,-128(r1) + stfd f17,-120(r1) + stfd f18,-112(r1) + stfd f19,-104(r1) + stfd f20,-96(r1) + stfd f21,-88(r1) + stfd f22,-80(r1) + stfd f23,-72(r1) + stfd f24,-64(r1) + stfd f25,-56(r1) + stfd f26,-48(r1) + stfd f27,-40(r1) + stfd f28,-32(r1) + stfd f29,-24(r1) + stfd f30,-16(r1) + stfd f31,-8(r1) + lwz r0,8(r1) + mtlr r0 + blr |