summaryrefslogtreecommitdiffstats
path: root/libc/sysdeps/linux/sh64/sbrk.c
blob: 616b813188d41b5ee6e9b701f488d097cafc399d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
/* From libc-5.3.12 */

#include <errno.h>
#include <unistd.h>
#include <sys/syscall.h>

extern void * __curbrk attribute_hidden;
extern int __init_brk (void) attribute_hidden;
extern void *_brk(void *ptr) attribute_hidden;

/* libc_hidden_proto(sbrk) */
void *
sbrk(intptr_t increment)
{
    if (__init_brk () == 0)
    {
		char * tmp = (char*)__curbrk+increment;
		__curbrk = _brk(tmp);
		if (__curbrk == tmp)
			return tmp-increment;
		__set_errno(ENOMEM);
		return ((void *) -1);
    }
    return ((void *) -1);
}
libc_hidden_def(sbrk)