1/*- 2 * Copyright (c) 2014 Andrew Turner 3 * Copyright (c) 2014 The FreeBSD Foundation 4 * 5 * Portions of this software were developed by Andrew Turner 6 * under sponsorship from the FreeBSD Foundation 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 */ 30 31#include <machine/asm.h> 32__FBSDID("$FreeBSD$"); 33 34#include <machine/setjmp.h> 35 36ENTRY(_setjmp) 37 /* Store the magic value and stack pointer */ 38 ldr x8, .Lmagic 39 mov x9, sp 40 stp x8, x9, [x0], #16 41 42 /* Store the general purpose registers and lr */ 43 stp x19, x20, [x0], #16 44 stp x21, x22, [x0], #16 45 stp x23, x24, [x0], #16 46 stp x25, x26, [x0], #16 47 stp x27, x28, [x0], #16 48 stp x29, lr, [x0], #16 49 50#ifndef _STANDALONE 51 /* Store the vfp registers */ 52 stp d8, d9, [x0], #16 53 stp d10, d11, [x0], #16 54 stp d12, d13, [x0], #16 55 stp d14, d15, [x0] 56#endif 57 58 /* Return value */ 59 mov x0, #0 60 ret 61 .align 3 62.Lmagic: 63 .quad _JB_MAGIC__SETJMP 64END(_setjmp) 65 66ENTRY(_longjmp) 67 /* Check the magic value */ 68 ldr x8, [x0], #8 69 ldr x9, .Lmagic 70 cmp x8, x9 71 b.ne botch 72 73 /* Restore the stack pointer */ 74 ldr x8, [x0], #8 75 mov sp, x8 76 77 /* Restore the general purpose registers and lr */ 78 ldp x19, x20, [x0], #16 79 ldp x21, x22, [x0], #16 80 ldp x23, x24, [x0], #16 81 ldp x25, x26, [x0], #16 82 ldp x27, x28, [x0], #16 83 ldp x29, lr, [x0], #16 84 85#ifndef _STANDALONE 86 /* Restore the vfp registers */ 87 ldp d8, d9, [x0], #16 88 ldp d10, d11, [x0], #16 89 ldp d12, d13, [x0], #16 90 ldp d14, d15, [x0] 91#endif 92 93 /* Load the return value */ 94 cmp x1, #0 95 csinc x0, x1, xzr, ne 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