1// Copyright 2016 The Fuchsia Authors 2// 3// Use of this source code is governed by a MIT-style 4// license that can be found in the LICENSE file or at 5// https://opensource.org/licenses/MIT 6 7// N.B. This is ideally temporary. It is currently used by Intel PT and PM 8// support, and is a stopgap until "resources" can be used to read/write 9// x86 MSRs. The intent is to use this interface for similar facilities in 10// ARM (assuming we need it - on x86 we need ring 0 to access most of the 11// MSRs we need). 12// Note on naming: The "m" in "mtrace" means "miscellaneous". "trace" is being 13// used very generically, e.g., all the different kinds of h/w based trace 14// and performance data capturing one can do. 15 16#pragma once 17 18#include <lib/user_copy/user_ptr.h> 19#include <stdint.h> 20#include <zircon/compiler.h> 21#include <zircon/types.h> 22 23zx_status_t mtrace_control(uint32_t kind, uint32_t action, uint32_t options, 24 user_inout_ptr<void> arg, size_t size); 25 26#ifdef __x86_64__ 27zx_status_t mtrace_cpuperf_control(uint32_t action, uint32_t options, 28 user_inout_ptr<void> arg, size_t size); 29zx_status_t mtrace_insntrace_control(uint32_t action, uint32_t options, 30 user_inout_ptr<void> arg, size_t size); 31#endif 32