| // Copyright 2020 The Go Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style | |
| // license that can be found in the LICENSE file. | |
| //go:build ppc64 || ppc64le | |
| package cpu | |
| // ppc64 doesn't have a 'cpuid' equivalent, so we rely on HWCAP/HWCAP2. | |
| // These are initialized by archauxv and should not be changed after they are | |
| // initialized. | |
| var HWCap uint | |
| var HWCap2 uint | |
| // HWCAP bits. These are exposed by Linux. | |
| const ( | |
| // ISA Level | |
| hwcap2_ARCH_2_07 = 0x80000000 | |
| hwcap2_ARCH_3_00 = 0x00800000 | |
| hwcap2_ARCH_3_1 = 0x00040000 | |
| // CPU features | |
| hwcap2_DARN = 0x00200000 | |
| hwcap2_SCV = 0x00100000 | |
| ) | |
| func osinit() { | |
| PPC64.IsPOWER8 = isSet(HWCap2, hwcap2_ARCH_2_07) | |
| PPC64.IsPOWER9 = isSet(HWCap2, hwcap2_ARCH_3_00) | |
| PPC64.IsPOWER10 = isSet(HWCap2, hwcap2_ARCH_3_1) | |
| PPC64.HasDARN = isSet(HWCap2, hwcap2_DARN) | |
| PPC64.HasSCV = isSet(HWCap2, hwcap2_SCV) | |
| } | |