restFP.S revision 2d1fdb26e458c4ddc04155c1d421bced3ba90cd0 
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//
22DEFINE_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