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 
23 zx_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__
27 zx_status_t mtrace_cpuperf_control(uint32_t action, uint32_t options,
28                                    user_inout_ptr<void> arg, size_t size);
29 zx_status_t mtrace_insntrace_control(uint32_t action, uint32_t options,
30                                      user_inout_ptr<void> arg, size_t size);
31 #endif
32