1/*- 2 * Copyright (c) 2014 Andrew Turner 3 * Copyright (c) 2014 The FreeBSD Foundation 4 * All rights reserved. 5 * 6 * Portions of this software were developed by Andrew Turner 7 * under sponsorship from the FreeBSD Foundation 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 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 */ 31 32#include <machine/asm.h> 33__FBSDID("$FreeBSD$"); 34 35#include <machine/setjmp.h> 36 37ENTRY(_setjmp) 38 /* Store the magic value and stack pointer */ 39 ldr x8, .Lmagic 40 mov x9, sp 41 stp x8, x9, [x0], #16 42 43 /* Store the general purpose registers and lr */ 44 stp x19, x20, [x0], #16 45 stp x21, x22, [x0], #16 46 stp x23, x24, [x0], #16 47 stp x25, x26, [x0], #16 48 stp x27, x28, [x0], #16 49 stp x29, lr, [x0], #16 50 51#ifndef _STANDALONE 52 /* Store the vfp registers */ 53 stp d8, d9, [x0], #16 54 stp d10, d11, [x0], #16 55 stp d12, d13, [x0], #16 56 stp d14, d15, [x0] 57#endif 58 59 /* Return value */ 60 mov x0, #0 61 ret 62 .align 3 63.Lmagic: 64 .quad _JB_MAGIC__SETJMP 65END(_setjmp) 66 67ENTRY(_longjmp) 68 /* Check the magic value */ 69 ldr x8, [x0], #8 70 ldr x9, .Lmagic 71 cmp x8, x9 72 b.ne botch 73 74 /* Restore the stack pointer */ 75 ldr x8, [x0], #8 76 mov sp, x8 77 78 /* Restore the general purpose registers and lr */ 79 ldp x19, x20, [x0], #16 80 ldp x21, x22, [x0], #16 81 ldp x23, x24, [x0], #16 82 ldp x25, x26, [x0], #16 83 ldp x27, x28, [x0], #16 84 ldp x29, lr, [x0], #16 85 86#ifndef _STANDALONE 87 /* Restore the vfp registers */ 88 ldp d8, d9, [x0], #16 89 ldp d10, d11, [x0], #16 90 ldp d12, d13, [x0], #16 91 ldp d14, d15, [x0] 92#endif 93 94 /* Load the return value */ 95 mov x0, x1 96 ret 97 98botch: 99#ifdef _STANDALONE 100 b botch 101#else 102 bl _C_LABEL(longjmperror) 103 bl _C_LABEL(abort) 104#endif 105END(_longjmp) 106