1 /* { dg-do compile } */
2 /* { dg-options "-O2" } */
3 /* { dg-final { scan-assembler "\\\.ifnc \\\$r9-\\\$r10-\\\$r11-\\\$r12" } } */
4
5 /* Sanity check for asm register operands in syscall failed for
6 cris-axis-linux-gnu due to a regmove bug.
7 Hans-Peter Nilsson <hp@axis.com>. */
8
9 extern void lseek64 (int, long long, int);
10 extern int *__errno_location (void);
11 struct dirent64
12 {
13 long long d_off;
14 unsigned short int d_reclen;
15 char d_name[256];
16 };
17 struct kernel_dirent64
18 {
19 long long d_off;
20 unsigned short d_reclen;
21 char d_name[256];
22 };
23
24 static inline int __attribute__ ((__always_inline__))
__syscall_getdents64(int fd,char * dirp,unsigned count)25 __syscall_getdents64 (int fd, char * dirp, unsigned count)
26 {
27 register unsigned long __sys_res asm ("r10");
28 register unsigned long __r10 __asm__ ("r10") = (unsigned long) fd;
29 register unsigned long __r11 __asm__ ("r11") = (unsigned long) dirp;
30 register unsigned long __r12 __asm__ ("r12") = (unsigned long) count;
31 register unsigned long __callno asm ("r9") = (220);
32 asm volatile (".ifnc %1-%0-%3-%4,$r9-$r10-$r11-$r12\n\t"
33 ".err\n\t"
34 ".endif\n\t"
35 "break 13"
36 : "=r" (__sys_res)
37 : "r" (__callno), "0" (__r10), "r" (__r11), "r" (__r12)
38 : "memory");
39 if (__sys_res >= (unsigned long) -4096)
40 {
41 (*__errno_location ()) = - __sys_res;
42 __sys_res = -1;
43 }
44 return __sys_res;
45 }
46
47 int
__getdents64(int fd,char * buf,unsigned nbytes)48 __getdents64 (int fd, char *buf, unsigned nbytes)
49 {
50 struct dirent64 *dp;
51 long long last_offset = -1;
52 int retval;
53 struct kernel_dirent64 *skdp, *kdp;
54 dp = (struct dirent64 *) buf;
55 skdp = kdp = __builtin_alloca (nbytes);
56 retval = __syscall_getdents64(fd, (char *)kdp, nbytes);
57 if (retval == -1)
58 return -1;
59 while ((char *) kdp < (char *) skdp + retval)
60 {
61 if ((char *) dp > buf + nbytes)
62 {
63 lseek64(fd, last_offset, 0);
64 break;
65 }
66 last_offset = kdp->d_off;
67 __builtin_memcpy (dp->d_name, kdp->d_name, kdp->d_reclen - 10);
68 dp = (struct dirent64 *) ((char *) dp + sizeof (*dp));
69 kdp = (struct kernel_dirent64 *) (((char *) kdp) + kdp->d_reclen);
70 }
71
72 return (char *) dp - buf;
73 }
74