projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| efdc5d91 AP |
1 | /* This file contains the floating-point save and restore routines. |
| 2 | * | |
| cbe34bb5 | 3 | * Copyright (C) 2004-2017 Free Software Foundation, Inc. |
| efdc5d91 AP |
4 | * |
| 5 | * This file is free software; you can redistribute it and/or modify it | |
| 6 | * under the terms of the GNU General Public License as published by the | |
| 748086b7 | 7 | * Free Software Foundation; either version 3, or (at your option) any |
| efdc5d91 AP |
8 | * later version. |
| 9 | * | |
| efdc5d91 AP |
10 | * This file is distributed in the hope that it will be useful, but |
| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | * General Public License for more details. | |
| 14 | * | |
| 748086b7 JJ |
15 | * Under Section 7 of GPL version 3, you are granted additional |
| 16 | * permissions described in the GCC Runtime Library Exception, version | |
| 17 | * 3.1, as published by the Free Software Foundation. | |
| 18 | * | |
| 19 | * You should have received a copy of the GNU General Public License and | |
| 20 | * a copy of the GCC Runtime Library Exception along with this program; | |
| 21 | * see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
| 22 | * <http://www.gnu.org/licenses/>. | |
| efdc5d91 AP |
23 | */ |
| 24 | ||
| 25 | /* THE SAVE AND RESTORE ROUTINES CAN HAVE ONLY ONE GLOBALLY VISIBLE | |
| 26 | ENTRY POINT - callers have to jump to "saveFP+60" to save f29..f31, | |
| 27 | for example. For FP reg saves/restores, it takes one instruction | |
| 28 | (4 bytes) to do the operation; for Vector regs, 2 instructions are | |
| 29 | required (8 bytes.) | |
| 30 | ||
| 31 | MORAL: DO NOT MESS AROUND WITH THESE FUNCTIONS! */ | |
| 32 | ||
| dc4d6ffa SS |
33 | #include "darwin-asm.h" |
| 34 | ||
| efdc5d91 AP |
35 | .text |
| 36 | .align 2 | |
| 37 | ||
| dc4d6ffa | 38 | /* saveFP saves R0 -- assumed to be the callers LR -- to 8/16(R1). */ |
| efdc5d91 AP |
39 | |
| 40 | .private_extern saveFP | |
| 41 | saveFP: | |
| 42 | stfd f14,-144(r1) | |
| 43 | stfd f15,-136(r1) | |
| 44 | stfd f16,-128(r1) | |
| 45 | stfd f17,-120(r1) | |
| 46 | stfd f18,-112(r1) | |
| 47 | stfd f19,-104(r1) | |
| 48 | stfd f20,-96(r1) | |
| 49 | stfd f21,-88(r1) | |
| 50 | stfd f22,-80(r1) | |
| 51 | stfd f23,-72(r1) | |
| 52 | stfd f24,-64(r1) | |
| 53 | stfd f25,-56(r1) | |
| 54 | stfd f26,-48(r1) | |
| 55 | stfd f27,-40(r1) | |
| 56 | stfd f28,-32(r1) | |
| 57 | stfd f29,-24(r1) | |
| 58 | stfd f30,-16(r1) | |
| 59 | stfd f31,-8(r1) | |
| dc4d6ffa | 60 | stg r0,SAVED_LR_OFFSET(r1) |
| efdc5d91 AP |
61 | blr |
| 62 | ||
| dc4d6ffa | 63 | /* restFP restores the caller`s LR from 8/16(R1). Note that the code for |
| efdc5d91 AP |
64 | this starts at the offset of F30 restoration, so calling this |
| 65 | routine in an attempt to restore only F31 WILL NOT WORK (it would | |
| 66 | be a stupid thing to do, anyway.) */ | |
| 67 | ||
| 68 | .private_extern restFP | |
| 69 | restFP: | |
| 70 | lfd f14,-144(r1) | |
| 71 | lfd f15,-136(r1) | |
| 72 | lfd f16,-128(r1) | |
| 73 | lfd f17,-120(r1) | |
| 74 | lfd f18,-112(r1) | |
| 75 | lfd f19,-104(r1) | |
| 76 | lfd f20,-96(r1) | |
| 77 | lfd f21,-88(r1) | |
| 78 | lfd f22,-80(r1) | |
| 79 | lfd f23,-72(r1) | |
| 80 | lfd f24,-64(r1) | |
| 81 | lfd f25,-56(r1) | |
| 82 | lfd f26,-48(r1) | |
| 83 | lfd f27,-40(r1) | |
| 84 | lfd f28,-32(r1) | |
| 85 | lfd f29,-24(r1) | |
| 86 | /* <OFFSET OF F30 RESTORE> restore callers LR */ | |
| dc4d6ffa | 87 | lg r0,SAVED_LR_OFFSET(r1) |
| efdc5d91 AP |
88 | lfd f30,-16(r1) |
| 89 | /* and prepare for return to caller */ | |
| 90 | mtlr r0 | |
| 91 | lfd f31,-8(r1) | |
| 92 | blr |