blob: f5099d7e825d3129499c9dec4e1defe6490d70d6 (
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
27
28
29
30
31
32
33
34
35
|
/* From libc-5.3.12 */
#include <unistd.h>
#include <sys/syscall.h>
#include <errno.h>
extern void * ___brk_addr;
extern int __init_brk (void);
void *
sbrk(ptrdiff_t increment)
{
if (__init_brk () == 0)
{
void * tmp = ___brk_addr+increment;
#if defined(__PIC__) || defined (__pic__)
__asm__ volatile ("pushl %%ebx\n\t"
"movl %%ecx,%%ebx\n\t"
"int $0x80\n\t"
"popl %%ebx"
:"=a" (___brk_addr)
:"0" (SYS_brk),"c" (tmp));
#else
__asm__ volatile ("int $0x80"
:"=a" (___brk_addr)
:"0" (SYS_brk),"b" (tmp));
#endif
if (___brk_addr == tmp)
return tmp-increment;
errno = ENOMEM;
return ((void *) -1);
}
return ((void *) -1);
}
|
