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 sub sp, sp, #16 39 stp x0, lr, [sp] 40 41 /* Store the signal mask */ 42 add x2, x0, #(_JB_SIGMASK * 8) /* oset */ 43 mov x1, #0 /* set */ 44 mov x0, #1 /* SIG_BLOCK */ 45 bl sigprocmask 46 47 ldp x0, lr, [sp] 48 add sp, sp, #16 49 50 /* Store the magic value and stack pointer */ 51 ldr x8, .Lmagic 52 mov x9, sp 53 stp x8, x9, [x0], #16 54 55 /* Store the general purpose registers and lr */ 56 stp x19, x20, [x0], #16 57 stp x21, x22, [x0], #16 58 stp x23, x24, [x0], #16 59 stp x25, x26, [x0], #16 60 stp x27, x28, [x0], #16 61 stp x29, lr, [x0], #16 62 63 /* Store the vfp registers */ 64 stp d8, d9, [x0], #16 65 stp d10, d11, [x0], #16 66 stp d12, d13, [x0], #16 67 stp d14, d15, [x0] 68 69 /* Return value */ 70 mov x0, #0 71 ret 72 .align 3 73.Lmagic: 74 .quad _JB_MAGIC_SETJMP 75END(setjmp) 76 77ENTRY(longjmp) 78 sub sp, sp, #32 79 stp x0, lr, [sp] 80 str x1, [sp, #16] 81 82 /* Restore the signal mask */ 83 mov x2, #0 /* oset */ 84 add x1, x0, #(_JB_SIGMASK * 8) /* set */ 85 mov x0, #3 /* SIG_SETMASK */ 86 bl sigprocmask 87 88 ldr x1, [sp, #16] 89 ldp x0, lr, [sp] 90 add sp, sp, #32 91 92 /* Check the magic value */ 93 ldr x8, [x0], #8 94 ldr x9, .Lmagic 95 cmp x8, x9 96 b.ne botch 97 98 /* Restore the stack pointer */ 99 ldr x8, [x0], #8 100 mov sp, x8 101 102 /* Restore the general purpose registers and lr */ 103 ldp x19, x20, [x0], #16 104 ldp x21, x22, [x0], #16 105 ldp x23, x24, [x0], #16 106 ldp x25, x26, [x0], #16 107 ldp x27, x28, [x0], #16 108 ldp x29, lr, [x0], #16 109 110 /* Restore the vfp registers */ 111 ldp d8, d9, [x0], #16 112 ldp d10, d11, [x0], #16 113 ldp d12, d13, [x0], #16 114 ldp d14, d15, [x0] 115 116 /* Load the return value */ 117 mov x0, x1 118 ret 119 120botch: 121 bl _C_LABEL(longjmperror) 122 bl _C_LABEL(abort) 123END(longjmp) 124