| // Copyright 2018 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. |
| |
| package runtime |
| |
| import ( |
| "internal/cpu" |
| "unsafe" |
| ) |
| |
| // Offsets into internal/cpu records for use in assembly. |
| const ( |
| offsetX86HasAVX = unsafe.Offsetof(cpu.X86.HasAVX) |
| offsetX86HasAVX2 = unsafe.Offsetof(cpu.X86.HasAVX2) |
| offsetX86HasERMS = unsafe.Offsetof(cpu.X86.HasERMS) |
| offsetX86HasSSE2 = unsafe.Offsetof(cpu.X86.HasSSE2) |
| |
| offsetARMHasIDIVA = unsafe.Offsetof(cpu.ARM.HasIDIVA) |
| ) |
| |
| var ( |
| // Set in runtime.cpuinit. |
| // TODO: deprecate these; use internal/cpu directly. |
| x86HasPOPCNT bool |
| x86HasSSE41 bool |
| x86HasFMA bool |
| |
| armHasVFPv4 bool |
| |
| arm64HasATOMICS bool |
| ) |
