Undefined SysCall

I have a RedHat Linux V Enterprise box with GNU 4.1: while inspecting
the glib, I found that: pthreadlib.a contains a `pthread_create.o'
with the lines:

mov eax,0x137 ;set EAX = 311 (decimal)
int 0x80 ;syscall with undefined code

My x86_64 box only has syscall numbers up to 0x117 (279 decimal),
according to asm/unistd.h. I perused asm-x86_64/unistd.h and other
syscall.h files, to no avail -- 0x137 seems undefined on my box.
Any idea what 0x137 is the syscall code for?
I objdump'd /usr/lib/pthreadlib.a and did not run the extracted
object (pthread_create.o) through any filters.

Thanks for any insights,
-- Scott

"Scott J. McCaughrin" <sjmccaug.TakeThisOut@128.174.154.110> writes:

> I have a RedHat Linux V Enterprise box with GNU 4.1: while inspecting
> the glib, I found that: pthreadlib.a contains a `pthread_create.o'
> with the lines:
>
> mov eax,0x137 ;set EAX = 311 (decimal)
> int 0x80 ;syscall with undefined code
>
> My x86_64 box only has syscall numbers up to 0x117 (279 decimal),

On Fedora Core 6 (kernel 2.6.19), /usr/include/asm-i386/unistd.h:
....
#define __NR_set_robust_list 311
#define __NR_get_robust_list 312
#define __NR_splice 313
#define __NR_sync_file_range 314
#define __NR_tee 315
#define __NR_vmsplice 316
#define __NR_move_pages 317
#define __NR_getcpu 318
#define __NR_epoll_pwait 319

#endif /* _ASM_I386_UNISTD_H_ */

It is a "standard" glibc technique to issue e.g.
syscall(__NR_set_robust_list), and fall back to other mechanism if
it returns ENOSYS.

Cheers,
--
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