summaryrefslogtreecommitdiff
path: root/libc/sysdeps/linux/sh64/sbrk.c
blob: 9cc8c4abd7e39b75a145e40d307d1eaa91567ff4 (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;

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

void attribute_hidden *
__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);
}
strong_alias(__sbrk,sbrk)