1/*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * William Jolitz.
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 * 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.
19 *
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
30 * SUCH DAMAGE.
31 *
32 *	@(#)setjmp.s	5.1 (Berkeley) 4/23/90"
33 */
34
35#if defined(LIBC_SCCS) && !defined(lint)
36	.text
37	.asciz "$Id: sigsetjmp.S,v 1.1 1993/12/05 13:01:05 ats Exp $"
38#endif /* LIBC_SCCS and not lint */
39#include <machine/asm.h>
40__FBSDID("$FreeBSD$");
41
42#include "SYS.h"
43
44/*-
45 * TODO:
46 *	Rename sigsetjmp to __sigsetjmp and siglongjmp to __siglongjmp,
47 *	remove the other *jmp functions and define everything in terms
48 *	of the renamed functions.  This requires compiler support for
49 *	the renamed functions (introduced in gcc-2.5.3; previous versions
50 *	only supported *jmp with 0 or 1 leading underscores).
51 *
52 *	Restore _all_ the registers and the signal mask atomically.  Can
53 *	use sigreturn() if sigreturn() works.
54 */
55
56ENTRY(sigsetjmp)
57	movl	8(%esp),%eax
58	movl	4(%esp),%ecx
59	movl	%eax,44(%ecx)
60	testl	%eax,%eax
61	jz	2f
62	PIC_PROLOGUE
63#ifdef PIC
64	subl	$12,%esp		/* make the stack 16-byte aligned */
65#endif
66	leal	28(%ecx), %eax
67	pushl	%eax			/* (sigset_t*)oset */
68	pushl	$0			/* (sigset_t*)set  */
69	pushl	$1			/* SIG_BLOCK       */
70	call	PIC_PLT(CNAME(_sigprocmask))
71#ifdef PIC
72	addl	$24,%esp
73#else
74	addl	$12,%esp
75#endif
76	PIC_EPILOGUE
77	movl	4(%esp),%ecx
782:	movl	0(%esp),%edx
79	movl	%edx, 0(%ecx)
80	movl	%ebx, 4(%ecx)
81	movl	%esp, 8(%ecx)
82	movl	%ebp,12(%ecx)
83	movl	%esi,16(%ecx)
84	movl	%edi,20(%ecx)
85	fnstcw	24(%ecx)
86	xorl	%eax,%eax
87	ret
88END(sigsetjmp)
89
90	.weak CNAME(siglongjmp);
91	.set CNAME(siglongjmp),CNAME(__siglongjmp)
92ENTRY(__siglongjmp)
93	movl	4(%esp),%edx
94	cmpl	$0,44(%edx)
95	jz	2f
96	PIC_PROLOGUE
97#ifdef PIC
98	subl	$12,%esp		/* make the stack 16-byte aligned */
99#endif
100	pushl	$0			/* (sigset_t*)oset */
101	leal	28(%edx), %eax
102	pushl	%eax			/* (sigset_t*)set  */
103	pushl	$3			/* SIG_SETMASK     */
104	call	PIC_PLT(CNAME(_sigprocmask))
105#ifdef PIC
106	addl	$24,%esp
107#else
108	addl	$12,%esp
109#endif
110	PIC_EPILOGUE
111	movl	4(%esp),%edx
1122:	movl	8(%esp),%eax
113	movl	0(%edx),%ecx
114	movl	4(%edx),%ebx
115	movl	8(%edx),%esp
116	movl	12(%edx),%ebp
117	movl	16(%edx),%esi
118	movl	20(%edx),%edi
119	fninit
120	fldcw	24(%edx)
121	testl	%eax,%eax
122	jnz	1f
123	incl	%eax
1241:	movl	%ecx,0(%esp)
125	ret
126END(__siglongjmp)
127
128	.section .note.GNU-stack,"",%progbits
129