2 * Copyright (c) 1990 The Regents of the University of California.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#)setjmp.s 5.1 (Berkeley) 4/23/90
37 * $FreeBSD: src/lib/libc/amd64/gen/setjmp.S,v 1.26 2003/06/02 22:37:53 peter Exp $
38 * $DragonFly: src/lib/libc/amd64/gen/setjmp.S,v 1.1 2004/02/02 05:43:14 dillon Exp $
41 #include <machine/asm.h>
44 * C library -- _setjmp, _longjmp
47 * will generate a "return(v)" from the last call to
49 * by restoring registers from the environment 'a'.
50 * The previous signal state is restored.
58 movq $1,%rdi /* SIG_BLOCK */
59 movq $0,%rsi /* (sigset_t*)set */
60 leaq 72(%rcx),%rdx /* 9,10; (sigset_t*)oset */
61 call PIC_PLT(CNAME(_sigprocmask))
64 movq 0(%rsp),%rdx /* retval */
65 movq %rdx, 0(%rcx) /* 0; retval */
66 movq %rbx, 8(%rcx) /* 1; rbx */
67 movq %rsp,16(%rcx) /* 2; rsp */
68 movq %rbp,24(%rcx) /* 3; rbp */
69 movq %r12,32(%rcx) /* 4; r12 */
70 movq %r13,40(%rcx) /* 5; r13 */
71 movq %r14,48(%rcx) /* 6; r14 */
72 movq %r15,56(%rcx) /* 7; r15 */
73 fnstcw 64(%rcx) /* 8; fpu cw */
78 .set CNAME(longjmp),CNAME(__longjmp)
83 movq $3,%rdi /* SIG_SETMASK */
84 leaq 72(%rdx),%rsi /* (sigset_t*)set */
85 movq $0,%rdx /* (sigset_t*)oset */
86 call PIC_PLT(CNAME(_sigprocmask))
88 popq %rdi /* jmpbuf */
90 movq %rsi,%rax /* retval */