| 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */
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| 2 | /*
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| 3 | *
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| 4 | * Copyright (C) IBM Corporation, 2012
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| 5 | *
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| 6 | * Author: Anton Blanchard <anton@au.ibm.com>
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| 7 | */
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| 8 | |
| 9 | |
| 10 |
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| 11 | .text
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| 12 | /*
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| 13 | * Exact prototype of getcpu
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| 14 | *
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| 15 | * int __kernel_getcpu(unsigned *cpu, unsigned *node);
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| 16 | *
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| 17 | */
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| 18 | |
| 19 | V_FUNCTION_BEGIN(__kernel_getcpu)
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| 20 | .cfi_startproc
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| 21 | mfspr r5,SPRN_SPRG_VDSO_READ
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| 22 | PPC_LCMPI cr0,r3,0
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| 23 | PPC_LCMPI cr1,r4,0
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| 24 | clrlwi r6,r5,16
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| 25 | rlwinm r7,r5,16,31-15,31-0
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| 26 | beq cr0,1f
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| 27 | stw r6,0(r3)
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| 28 | 1: crclr cr0*4+so
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| 29 | li r3,0 /* always success */
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| 30 | beqlr cr1
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| 31 | stw r7,0(r4)
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| 32 | blr
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| 33 | .cfi_endproc
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| 34 | V_FUNCTION_END(__kernel_getcpu)
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| 35 | |
| 36 | V_FUNCTION_BEGIN(__kernel_getcpu)
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| 37 | .cfi_startproc
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| 38 | cmpwi cr0, r3, 0
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| 39 | cmpwi cr1, r4, 0
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| 40 | li r5, 0
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| 41 | beq cr0, 1f
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| 42 | stw r5, 0(r3)
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| 43 | 1: li r3, 0 /* always success */
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| 44 | crclr cr0*4+so
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| 45 | beqlr cr1
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| 46 | stw r5, 0(r4)
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| 47 | blr
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| 48 | .cfi_endproc
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| 49 | V_FUNCTION_END(__kernel_getcpu)
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| 50 | |