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 * 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.
23 *
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
34 * SUCH DAMAGE.
35 */
36
37#if defined(SYSLIBC_RCS) && !defined(lint)
38 .text
| 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 * 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.
23 *
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
34 * SUCH DAMAGE.
35 */
36
37#if defined(SYSLIBC_RCS) && !defined(lint)
38 .text
|
39 .asciz "$FreeBSD: head/lib/libc/i386/sys/sbrk.S 81586 2001-08-13 14:06:34Z ru $"
| 39 .asciz "$FreeBSD: head/lib/libc/i386/sys/sbrk.S 87006 2001-11-27 20:51:26Z jhb $"
|
40#endif /* SYSLIBC_RCS and not lint */
41
42#include "SYS.h"
43
44 .globl CNAME(end)
45 .globl HIDENAME(minbrk)
46 .globl HIDENAME(curbrk)
47
48 .data
49HIDENAME(minbrk): .long CNAME(end)
50HIDENAME(curbrk): .long CNAME(end)
51 .text
52
53ENTRY(sbrk)
54#ifdef PIC
55 movl 4(%esp),%ecx
56 PIC_PROLOGUE
57 movl PIC_GOT(HIDENAME(curbrk)),%edx
58 movl (%edx),%eax
59 PIC_EPILOGUE
60 testl %ecx,%ecx
61 jz back
62 addl %eax,4(%esp)
| 40#endif /* SYSLIBC_RCS and not lint */
41
42#include "SYS.h"
43
44 .globl CNAME(end)
45 .globl HIDENAME(minbrk)
46 .globl HIDENAME(curbrk)
47
48 .data
49HIDENAME(minbrk): .long CNAME(end)
50HIDENAME(curbrk): .long CNAME(end)
51 .text
52
53ENTRY(sbrk)
54#ifdef PIC
55 movl 4(%esp),%ecx
56 PIC_PROLOGUE
57 movl PIC_GOT(HIDENAME(curbrk)),%edx
58 movl (%edx),%eax
59 PIC_EPILOGUE
60 testl %ecx,%ecx
61 jz back
62 addl %eax,4(%esp)
|
63 lea SYS_break,%eax
| 63 mov $SYS_break,%eax
|
64 KERNCALL
65 jb err
66 PIC_PROLOGUE
67 movl PIC_GOT(HIDENAME(curbrk)),%edx
68 movl (%edx),%eax
69 addl %ecx,(%edx)
70 PIC_EPILOGUE
71back:
72 ret
73err:
74 PIC_PROLOGUE
75 jmp PIC_PLT(HIDENAME(cerror))
76
77#else /* !PIC */
78
79 movl 4(%esp),%ecx
80 movl HIDENAME(curbrk),%eax
81 testl %ecx,%ecx
82 jz back
83 addl %eax,4(%esp)
| 64 KERNCALL
65 jb err
66 PIC_PROLOGUE
67 movl PIC_GOT(HIDENAME(curbrk)),%edx
68 movl (%edx),%eax
69 addl %ecx,(%edx)
70 PIC_EPILOGUE
71back:
72 ret
73err:
74 PIC_PROLOGUE
75 jmp PIC_PLT(HIDENAME(cerror))
76
77#else /* !PIC */
78
79 movl 4(%esp),%ecx
80 movl HIDENAME(curbrk),%eax
81 testl %ecx,%ecx
82 jz back
83 addl %eax,4(%esp)
|
84 lea SYS_break,%eax
| 84 mov $SYS_break,%eax
|
85 KERNCALL
86 jb err
87 movl HIDENAME(curbrk),%eax
88 addl %ecx,HIDENAME(curbrk)
89back:
90 ret
91err:
92 jmp HIDENAME(cerror)
93#endif /* PIC */
| 85 KERNCALL
86 jb err
87 movl HIDENAME(curbrk),%eax
88 addl %ecx,HIDENAME(curbrk)
89back:
90 ret
91err:
92 jmp HIDENAME(cerror)
93#endif /* PIC */
|