| /* SPDX-License-Identifier: GPL-2.0-or-later */ | |
| /* | |
| * | |
| * 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) |