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 sub sp, sp, #16 38 stp x0, lr, [sp] 39 40 /* Store the signal mask */ 41 add x2, x0, #(_JB_SIGMASK * 8) /* oset */ 42 mov x1, #0 /* set */ 43 mov x0, #1 /* SIG_BLOCK */ 44 bl sigprocmask 45 46 ldp x0, lr, [sp] 47 add sp, sp, #16 48 49 /* Store the magic value and stack pointer */ 50 ldr x8, .Lmagic 51 mov x9, sp 52 stp x8, x9, [x0], #16 53 54 /* Store the general purpose registers and lr */ 55 stp x19, x20, [x0], #16 56 stp x21, x22, [x0], #16 57 stp x23, x24, [x0], #16 58 stp x25, x26, [x0], #16 59 stp x27, x28, [x0], #16 60 stp x29, lr, [x0], #16 61 62 /* Store the vfp registers */ 63 stp d8, d9, [x0], #16 64 stp d10, d11, [x0], #16 65 stp d12, d13, [x0], #16 66 stp d14, d15, [x0] 67 68 /* Return value */ 69 mov x0, #0 70 ret 71 .align 3 72.Lmagic: 73 .quad _JB_MAGIC_SETJMP 74END(setjmp) 75 76ENTRY(longjmp) 77 sub sp, sp, #32 78 stp x0, lr, [sp] 79 str x1, [sp, #16] 80 81 /* Restore the signal mask */ 82 mov x2, #0 /* oset */ 83 add x1, x0, #(_JB_SIGMASK * 8) /* set */ 84 mov x0, #3 /* SIG_SETMASK */ 85 bl sigprocmask 86 87 ldr x1, [sp, #16] 88 ldp x0, lr, [sp] 89 add sp, sp, #32 90 91 /* Check the magic value */ 92 ldr x8, [x0], #8 93 ldr x9, .Lmagic 94 cmp x8, x9 95 b.ne botch 96 97 /* Restore the stack pointer */ 98 ldr x8, [x0], #8 99 mov sp, x8 100 101 /* Restore the general purpose registers and lr */ 102 ldp x19, x20, [x0], #16 103 ldp x21, x22, [x0], #16 104 ldp x23, x24, [x0], #16 105 ldp x25, x26, [x0], #16 106 ldp x27, x28, [x0], #16 107 ldp x29, lr, [x0], #16 108 109 /* Restore the vfp registers */ 110 ldp d8, d9, [x0], #16 111 ldp d10, d11, [x0], #16 112 ldp d12, d13, [x0], #16 113 ldp d14, d15, [x0] 114 115 /* Load the return value */ 116 cmp x1, #0 117 csinc x0, x1, xzr, ne 118 ret 119 120botch: 121 bl _C_LABEL(longjmperror) 122 bl _C_LABEL(abort) 123END(longjmp) 124