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
33#if defined(SYSLIBC_SCCS) && !defined(lint)
34 .asciz "@(#)sbrk.s 5.1 (Berkeley) 4/23/90"
35#endif /* SYSLIBC_SCCS and not lint */
36#include <machine/asm.h>
| 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
33#if defined(SYSLIBC_SCCS) && !defined(lint)
34 .asciz "@(#)sbrk.s 5.1 (Berkeley) 4/23/90"
35#endif /* SYSLIBC_SCCS and not lint */
36#include <machine/asm.h>
|
38
39#include "SYS.h"
40
41 .globl CNAME(_end)
42 .globl HIDENAME(minbrk)
43 .globl HIDENAME(curbrk)
44
45 .data
46HIDENAME(minbrk): .long CNAME(_end)
47HIDENAME(curbrk): .long CNAME(_end)
48 .text
49
50ENTRY(sbrk)
51#ifdef PIC
52 movl 4(%esp),%ecx
53 PIC_PROLOGUE
54 movl PIC_GOT(HIDENAME(curbrk)),%edx
55 movl (%edx),%eax
56 PIC_EPILOGUE
57 testl %ecx,%ecx
58 jz back
59 addl %eax,4(%esp)
60 mov $SYS_break,%eax
61 KERNCALL
62 jb err
63 PIC_PROLOGUE
64 movl PIC_GOT(HIDENAME(curbrk)),%edx
65 movl (%edx),%eax
66 addl %ecx,(%edx)
67 PIC_EPILOGUE
68back:
69 ret
70err:
71 PIC_PROLOGUE
72 jmp PIC_PLT(HIDENAME(cerror))
73
74#else /* !PIC */
75
76 movl 4(%esp),%ecx
77 movl HIDENAME(curbrk),%eax
78 testl %ecx,%ecx
79 jz back
80 addl %eax,4(%esp)
81 mov $SYS_break,%eax
82 KERNCALL
83 jb err
84 movl HIDENAME(curbrk),%eax
85 addl %ecx,HIDENAME(curbrk)
86back:
87 ret
88err:
89 jmp HIDENAME(cerror)
90#endif /* PIC */
| 38
39#include "SYS.h"
40
41 .globl CNAME(_end)
42 .globl HIDENAME(minbrk)
43 .globl HIDENAME(curbrk)
44
45 .data
46HIDENAME(minbrk): .long CNAME(_end)
47HIDENAME(curbrk): .long CNAME(_end)
48 .text
49
50ENTRY(sbrk)
51#ifdef PIC
52 movl 4(%esp),%ecx
53 PIC_PROLOGUE
54 movl PIC_GOT(HIDENAME(curbrk)),%edx
55 movl (%edx),%eax
56 PIC_EPILOGUE
57 testl %ecx,%ecx
58 jz back
59 addl %eax,4(%esp)
60 mov $SYS_break,%eax
61 KERNCALL
62 jb err
63 PIC_PROLOGUE
64 movl PIC_GOT(HIDENAME(curbrk)),%edx
65 movl (%edx),%eax
66 addl %ecx,(%edx)
67 PIC_EPILOGUE
68back:
69 ret
70err:
71 PIC_PROLOGUE
72 jmp PIC_PLT(HIDENAME(cerror))
73
74#else /* !PIC */
75
76 movl 4(%esp),%ecx
77 movl HIDENAME(curbrk),%eax
78 testl %ecx,%ecx
79 jz back
80 addl %eax,4(%esp)
81 mov $SYS_break,%eax
82 KERNCALL
83 jb err
84 movl HIDENAME(curbrk),%eax
85 addl %ecx,HIDENAME(curbrk)
86back:
87 ret
88err:
89 jmp HIDENAME(cerror)
90#endif /* PIC */
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