| Raghu Gandham | 405b802 | 2012-07-25 18:16:42 -0700 | [diff] [blame] | 1 | /* $OpenBSD: sigsetjmp.S,v 1.5 2005/08/07 16:40:15 espie Exp $ */ |
| 2 | /*- |
| 3 | * Copyright (c) 1991, 1993, 1995, |
| 4 | * The Regents of the University of California. All rights reserved. |
| 5 | * |
| 6 | * This code is derived from software contributed to Berkeley by |
| 7 | * Havard Eidnes. |
| 8 | * |
| 9 | * Redistribution and use in source and binary forms, with or without |
| 10 | * modification, are permitted provided that the following conditions |
| 11 | * are met: |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer in the |
| 16 | * documentation and/or other materials provided with the distribution. |
| 17 | * 3. Neither the name of the University nor the names of its contributors |
| 18 | * may be used to endorse or promote products derived from this software |
| 19 | * without specific prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 31 | * SUCH DAMAGE. |
| 32 | */ |
| 33 | |
| Elliott Hughes | 851e68a | 2014-02-19 16:53:20 -0800 | [diff] [blame^] | 34 | #include <private/bionic_asm.h> |
| Raghu Gandham | 405b802 | 2012-07-25 18:16:42 -0700 | [diff] [blame] | 35 | #include <machine/regnum.h> |
| 36 | #include <machine/setjmp.h> |
| 37 | |
| 38 | /* |
| 39 | * trampolines for sigsetjmp and siglongjmp save and restore mask. |
| 40 | * |
| 41 | */ |
| 42 | FRAMESZ= MKFSIZ(1,1) |
| 43 | GPOFF= FRAMESZ-2*REGSZ |
| 44 | |
| 45 | LEAF(sigsetjmp, FRAMESZ) |
| 46 | PTR_SUBU sp, FRAMESZ |
| 47 | SETUP_GP64(GPOFF, sigsetjmp) |
| 48 | .set reorder |
| 49 | REG_S a1, (_JBLEN*REGSZ)(a0) # save "savemask" |
| 50 | bne a1, 0x0, 1f # do saving of signal mask? |
| 51 | LA t9, _setjmp |
| 52 | RESTORE_GP64 |
| 53 | PTR_ADDU sp, FRAMESZ |
| 54 | jr t9 |
| 55 | |
| 56 | 1: LA t9, setjmp |
| 57 | RESTORE_GP64 |
| 58 | PTR_ADDU sp, FRAMESZ |
| 59 | jr t9 |
| 60 | END(sigsetjmp) |
| 61 | |
| 62 | LEAF(siglongjmp, FRAMESZ) |
| 63 | PTR_SUBU sp, FRAMESZ |
| 64 | SETUP_GP64(GPOFF, siglongjmp) |
| 65 | .set reorder |
| 66 | REG_L t0, (_JBLEN*REGSZ)(a0) # get "savemask" |
| 67 | bne t0, 0x0, 1f # restore signal mask? |
| 68 | LA t9, _longjmp |
| 69 | RESTORE_GP64 |
| 70 | PTR_ADDU sp, FRAMESZ |
| 71 | jr t9 |
| 72 | 1: |
| 73 | LA t9, longjmp |
| 74 | RESTORE_GP64 |
| 75 | PTR_ADDU sp, FRAMESZ |
| 76 | jr t9 |
| 77 | END(siglongjmp) |