1/* $NetBSD: _setjmp.S,v 1.5 2003/04/05 23:08:51 bjh21 Exp $ */
2
3/*
4 * Copyright (c) 1997 Mark Brinicombe
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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.
21 *
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
32 * SUCH DAMAGE.
33 */
34
35#include <machine/asm.h>
| 1/* $NetBSD: _setjmp.S,v 1.5 2003/04/05 23:08:51 bjh21 Exp $ */
2
3/*
4 * Copyright (c) 1997 Mark Brinicombe
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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.
21 *
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
32 * SUCH DAMAGE.
33 */
34
35#include <machine/asm.h>
|
38/*
39 * C library -- _setjmp, _longjmp
40 *
41 * _longjmp(a,v)
42 * will generate a "return(v)" from the last call to
43 * _setjmp(a)
44 * by restoring registers from the stack.
45 * The previous signal state is NOT restored.
46 *
47 * Note: r0 is the return value
48 * r1-r3 are scratch registers in functions
49 */
50
51ENTRY(_setjmp)
52 ldr r1, .L_setjmp_magic
53 str r1, [r0], #4
54#ifdef SOFTFLOAT
55 add r0, r0, #52
56#else
57 /* Store fp registers */
58 sfm f4, 4, [r0], #48
59 /* Store fpsr */
60 rfs r1
61 str r1, [r0], #0x0004
62#endif /* SOFTFLOAT */
63 /* Store integer registers */
64 stmia r0, {r4-r14}
65
66 mov r0, #0x00000000
67 mov r15, r14
68
69.L_setjmp_magic:
70 .word _JB_MAGIC__SETJMP
71
72ENTRY(_longjmp)
73 ldr r2, .L_setjmp_magic
74 ldr r3, [r0], #4
75 teq r2, r3
76 bne botch
77
78#ifdef SOFTFLOAT
79 add r0, r0, #52
80#else
81 /* Restore fp registers */
82 lfm f4, 4, [r0], #48
83 /* Restore fpsr */
84 ldr r4, [r0], #0x0004
85 wfs r4
86#endif /* SOFTFLOAT */
87 /* Restore integer registers */
88 ldmia r0, {r4-r14}
89
90 /* Validate sp and r14 */
91 teq sp, #0
92 teqne r14, #0
93 beq botch
94
95 /* Set return value */
96 mov r0, r1
97 teq r0, #0x00000000
98 moveq r0, #0x00000001
99 mov r15, r14
100
101 /* validation failed, die die die. */
102botch:
103 bl PIC_SYM(_C_LABEL(longjmperror), PLT)
104 bl PIC_SYM(_C_LABEL(abort), PLT)
105 b . - 8 /* Cannot get here */
| 38/*
39 * C library -- _setjmp, _longjmp
40 *
41 * _longjmp(a,v)
42 * will generate a "return(v)" from the last call to
43 * _setjmp(a)
44 * by restoring registers from the stack.
45 * The previous signal state is NOT restored.
46 *
47 * Note: r0 is the return value
48 * r1-r3 are scratch registers in functions
49 */
50
51ENTRY(_setjmp)
52 ldr r1, .L_setjmp_magic
53 str r1, [r0], #4
54#ifdef SOFTFLOAT
55 add r0, r0, #52
56#else
57 /* Store fp registers */
58 sfm f4, 4, [r0], #48
59 /* Store fpsr */
60 rfs r1
61 str r1, [r0], #0x0004
62#endif /* SOFTFLOAT */
63 /* Store integer registers */
64 stmia r0, {r4-r14}
65
66 mov r0, #0x00000000
67 mov r15, r14
68
69.L_setjmp_magic:
70 .word _JB_MAGIC__SETJMP
71
72ENTRY(_longjmp)
73 ldr r2, .L_setjmp_magic
74 ldr r3, [r0], #4
75 teq r2, r3
76 bne botch
77
78#ifdef SOFTFLOAT
79 add r0, r0, #52
80#else
81 /* Restore fp registers */
82 lfm f4, 4, [r0], #48
83 /* Restore fpsr */
84 ldr r4, [r0], #0x0004
85 wfs r4
86#endif /* SOFTFLOAT */
87 /* Restore integer registers */
88 ldmia r0, {r4-r14}
89
90 /* Validate sp and r14 */
91 teq sp, #0
92 teqne r14, #0
93 beq botch
94
95 /* Set return value */
96 mov r0, r1
97 teq r0, #0x00000000
98 moveq r0, #0x00000001
99 mov r15, r14
100
101 /* validation failed, die die die. */
102botch:
103 bl PIC_SYM(_C_LABEL(longjmperror), PLT)
104 bl PIC_SYM(_C_LABEL(abort), PLT)
105 b . - 8 /* Cannot get here */
|