1#include <sys/sysinfo.h>
2#include "syscall.h"
3#include "libc.h"
4
5#define klong long long
6#define kulong unsigned long long
7
8struct kernel_sysinfo {
9	klong uptime;
10	kulong loads[3];
11	kulong totalram;
12	kulong freeram;
13	kulong sharedram;
14	kulong bufferram;
15	kulong totalswap;
16	kulong freeswap;
17	short procs;
18	short pad;
19	kulong totalhigh;
20	kulong freehigh;
21	unsigned mem_unit;
22};
23
24int __lsysinfo(struct sysinfo *info)
25{
26	struct kernel_sysinfo tmp;
27	int ret = syscall(SYS_sysinfo, &tmp);
28	if(ret == -1) return ret;
29	info->uptime = tmp.uptime;
30	info->loads[0] = tmp.loads[0];
31	info->loads[1] = tmp.loads[1];
32	info->loads[2] = tmp.loads[2];
33	kulong shifts;
34	kulong max = tmp.totalram | tmp.totalswap;
35	__asm__("bsr %1,%0" : "=r"(shifts) : "r"(max));
36	shifts = shifts >= 32 ? shifts - 31 : 0;
37	info->totalram = tmp.totalram >> shifts;
38	info->freeram = tmp.freeram >> shifts;
39	info->sharedram = tmp.sharedram >> shifts;
40	info->bufferram = tmp.bufferram >> shifts;
41	info->totalswap = tmp.totalswap >> shifts;
42	info->freeswap = tmp.freeswap >> shifts;
43	info->procs = tmp.procs ;
44	info->totalhigh = tmp.totalhigh >> shifts;
45	info->freehigh = tmp.freehigh >> shifts;
46	info->mem_unit = (tmp.mem_unit ? tmp.mem_unit : 1) << shifts;
47	return ret;
48}
49
50weak_alias(__lsysinfo, sysinfo);
51