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-rw-r--r--lib/builtins/ppc/restFP.S43
1 files changed, 43 insertions, 0 deletions
diff --git a/lib/builtins/ppc/restFP.S b/lib/builtins/ppc/restFP.S
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+++ b/lib/builtins/ppc/restFP.S
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+//===-- 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