1 /* $NetBSD: setjmp.S,v 1.6 2004/08/21 11:20:10 rearnsha Exp $ */
4 * Copyright (c) 1997 Mark Brinicombe
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Mark Brinicombe
18 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #include <machine/asm.h>
36 #include <machine/setjmp.h>
39 * C library -- setjmp, longjmp
42 * will generate a "return(v)" from the last call to
44 * by restoring registers from the stack.
45 * The previous signal state is restored.
49 /* Block all signals and retrieve the old signal mask */
53 bl PIC_SYM(_C_LABEL(sigblock), PLT)
58 /* Store signal mask */
59 str r1, [r0, #(25 * 4)]
61 ldr r1, .Lsetjmp_magic
67 /* Store fp registers */
73 /* Store integer registers */
79 .word _JB_MAGIC_SETJMP
83 ldr r2, .Lsetjmp_magic
88 /* Fetch signal mask */
89 ldr r2, [r0, #(25 * 4)]
92 stmfd sp!, {r0, r1, r14}
93 sub sp, sp, #4 /* align the stack */
96 bl PIC_SYM(_C_LABEL(sigsetmask), PLT)
98 add sp, sp, #4 /* unalign the stack */
99 ldmfd sp!, {r0, r1, r14}
105 /* Restore fp registers */
108 ldr r4, [r0], #0x0004
110 #endif /* SOFTFLOAT */
111 /* Restore integer registers */
114 /* Validate sp and r14 */
119 /* Set return value */
123 moveq r0, #0x00000001
126 /* validation failed, die die die. */
128 bl PIC_SYM(_C_LABEL(longjmperror), PLT)
129 bl PIC_SYM(_C_LABEL(abort), PLT)
130 b . - 8 /* Cannot get here */