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- /*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
- * Copyright (C) IBM Corporation, 2012
- *
- * Author: Anton Blanchard <anton@au.ibm.com>
- */
- #include <asm/ppc_asm.h>
- #include <asm/vdso.h>
- .text
- /*
- * Exact prototype of getcpu
- *
- * int __kernel_getcpu(unsigned *cpu, unsigned *node);
- *
- */
- V_FUNCTION_BEGIN(__kernel_getcpu)
- .cfi_startproc
- mfspr r5,SPRN_SPRG_VDSO_READ
- cmpdi cr0,r3,0
- cmpdi cr1,r4,0
- clrlwi r6,r5,16
- rlwinm r7,r5,16,31-15,31-0
- beq cr0,1f
- stw r6,0(r3)
- 1: beq cr1,2f
- stw r7,0(r4)
- 2: crclr cr0*4+so
- li r3,0 /* always success */
- blr
- .cfi_endproc
- V_FUNCTION_END(__kernel_getcpu)
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