projects / thirdparty / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1a59d1b8 | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| 18ad51dd | 2 | /* |
| 18ad51dd AB |
3 | * |
| 4 | * Copyright (C) IBM Corporation, 2012 | |
| 5 | * | |
| 6 | * Author: Anton Blanchard <anton@au.ibm.com> | |
| 7 | */ | |
| 8 | #include <asm/ppc_asm.h> | |
| 9 | #include <asm/vdso.h> | |
| 10 | ||
| 11 | .text | |
| 12 | /* | |
| 13 | * Exact prototype of getcpu | |
| 14 | * | |
| 15 | * int __kernel_getcpu(unsigned *cpu, unsigned *node); | |
| 16 | * | |
| 17 | */ | |
| 18 | V_FUNCTION_BEGIN(__kernel_getcpu) | |
| 19 | .cfi_startproc | |
| 9d378dfa | 20 | mfspr r5,SPRN_SPRG_VDSO_READ |
| 152d44a8 AB |
21 | cmpwi cr0,r3,0 |
| 22 | cmpwi cr1,r4,0 | |
| 18ad51dd AB |
23 | clrlwi r6,r5,16 |
| 24 | rlwinm r7,r5,16,31-15,31-0 | |
| 25 | beq cr0,1f | |
| 26 | stw r6,0(r3) | |
| 27 | 1: beq cr1,2f | |
| 28 | stw r7,0(r4) | |
| 29 | 2: crclr cr0*4+so | |
| 30 | li r3,0 /* always success */ | |
| 31 | blr | |
| 32 | .cfi_endproc | |
| 33 | V_FUNCTION_END(__kernel_getcpu) |