// Copyright 2018 Google LLC // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. #include "textflag.h" TEXT ·Rdtsc(SB),NOSPLIT,$0-8 // Get the virtual counter. ISB $15 WORD $0xd53be040 //MRS CNTVCT_EL0, R0 MOVD R0, ret+0(FP) RET