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_SCCS) && !defined(lint)
38 .asciz "@(#)brk.s 5.2 (Berkeley) 12/17/90"
39#endif /* SYSLIBC_SCCS and not lint */
40#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 * 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_SCCS) && !defined(lint)
38 .asciz "@(#)brk.s 5.2 (Berkeley) 12/17/90"
39#endif /* SYSLIBC_SCCS and not lint */
40#include <machine/asm.h>
|
41__FBSDID("$FreeBSD: head/lib/libc/amd64/sys/brk.S 114313 2003-04-30 18:16:33Z peter $");
| 41__FBSDID("$FreeBSD: head/lib/libc/amd64/sys/brk.S 115279 2003-05-24 17:35:23Z peter $");
|
42
43#include "SYS.h"
44
45 .globl HIDENAME(curbrk)
46 .globl HIDENAME(minbrk)
47ENTRY(_brk)
48 pushq %rdi
49 jmp ok
50
51ENTRY(brk)
52 pushq %rdi
53 movq %rdi,%rax
| 42
43#include "SYS.h"
44
45 .globl HIDENAME(curbrk)
46 .globl HIDENAME(minbrk)
47ENTRY(_brk)
48 pushq %rdi
49 jmp ok
50
51ENTRY(brk)
52 pushq %rdi
53 movq %rdi,%rax
|
54 cmpq %rax,PIC_GOT(HIDENAME(minbrk))
| 54#ifdef PIC
55 movq PIC_GOT(HIDENAME(minbrk)),%rdx
56 cmpq %rax,(%rdx)
57#else
58 cmpq %rax,HIDENAME(minbrk)(%rip)
59#endif
|
55 jbe ok
| 60 jbe ok
|
56 movq PIC_GOT(HIDENAME(minbrk)),%rdi
| 61#ifdef PIC
62 movq (%rdx),%rdi
63#else
64 movq HIDENAME(minbrk)(%rip),%rdi
65#endif
|
57ok:
58 movq $SYS_break,%rax
59 KERNCALL
60 jb err
61 movq 0(%rsp),%rax
| 66ok:
67 movq $SYS_break,%rax
68 KERNCALL
69 jb err
70 movq 0(%rsp),%rax
|
62 movq %rax,PIC_GOT(HIDENAME(curbrk))
| 71#ifdef PIC
72 movq PIC_GOT(HIDENAME(curbrk)),%rdx
73 movq %rax,(%rdx)
74#else
75 movq %rax,HIDENAME(curbrk)(%rip)
76#endif
|
63 movq $0,%rax
64 popq %rdi
65 ret
66err:
| 77 movq $0,%rax
78 popq %rdi
79 ret
80err:
|
67 jmp PIC_PLT(HIDENAME(cerror))
| 81#ifdef PIC
82 movq PIC_GOT(HIDENAME(cerror)),%rdx
83 jmp *%rdx
84#else
85 jmp HIDENAME(cerror)
86#endif
|
| |