File: sched_getcpu.S

package info (click to toggle)
glibc 2.19-11
  • links: PTS, VCS
  • area: main
  • in suites: jessie
  • size: 202,392 kB
  • ctags: 140,042
  • sloc: ansic: 969,214; asm: 241,208; sh: 10,046; makefile: 8,471; cpp: 3,595; perl: 2,077; pascal: 1,839; awk: 1,704; yacc: 317; sed: 73
file content (49 lines) | stat: -rw-r--r-- 1,431 bytes parent folder | download | duplicates (10)
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
36
37
38
39
40
41
42
43
44
45
46
47
48
49
/* Copyright (C) 2012-2014 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#ifdef SHARED
#include <sysdep.h>
#include <tls.h>
#define _ERRNO_H	1
#include <bits/errno.h>

ENTRY (sched_getcpu)
	/* Align stack and create local variable for result.  */
	sub	$0x8, %esp
	cfi_adjust_cfa_offset(8)

	mov	%esp, %edi
	xor	%esi, %esi
	mov	$VGETCPU_CACHE_OFFSET, %edx
	add	%fs:0, %edx

	call	__getcpu

	/* Local variable is result if the call is successful.  */
	mov	(%rsp), %edx
	/* Restore stack pointer before we might jump to
	   SYSCALL_ERROR_LABEL which returns to the caller.  */
	add	$0x8, %esp
	cfi_adjust_cfa_offset(-8)

	cmp	$-4095, %eax
	jae	SYSCALL_ERROR_LABEL

	mov	%edx, %eax
	ret
PSEUDO_END(sched_getcpu)
#endif