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 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #if defined(LIBC_SCCS) && !defined(lint)
34 .asciz "@(#)setjmp.s 5.1 (Berkeley) 4/23/90"
35 #endif /* LIBC_SCCS and not lint */
36 #include <machine/asm.h>
37 __FBSDID("$FreeBSD$");
40 * C library -- _setjmp, _longjmp
43 * will generate a "return(v)" from the last call to
45 * by restoring registers from the environment 'a'.
46 * The previous signal state is restored.
54 movq $1,%rdi /* SIG_BLOCK */
55 movq $0,%rsi /* (sigset_t*)set */
56 leaq 72(%rcx),%rdx /* 9,10; (sigset_t*)oset */
57 call PIC_PLT(CNAME(_sigprocmask))
60 movq 0(%rsp),%rdx /* retval */
61 movq %rdx, 0(%rcx) /* 0; retval */
62 movq %rbx, 8(%rcx) /* 1; rbx */
63 movq %rsp,16(%rcx) /* 2; rsp */
64 movq %rbp,24(%rcx) /* 3; rbp */
65 movq %r12,32(%rcx) /* 4; r12 */
66 movq %r13,40(%rcx) /* 5; r13 */
67 movq %r14,48(%rcx) /* 6; r14 */
68 movq %r15,56(%rcx) /* 7; r15 */
69 fnstcw 64(%rcx) /* 8; fpu cw */
75 .set CNAME(longjmp),CNAME(__longjmp)
80 movq $3,%rdi /* SIG_SETMASK */
81 leaq 72(%rdx),%rsi /* (sigset_t*)set */
82 movq $0,%rdx /* (sigset_t*)oset */
83 call PIC_PLT(CNAME(_sigprocmask))
85 popq %rdi /* jmpbuf */
87 movq %rsi,%rax /* retval */