mirror of
https://github.com/matrix-construct/construct
synced 2024-12-02 03:32:52 +01:00
44 lines
1,022 B
C
44 lines
1,022 B
C
|
// The Construct
|
||
|
|
//
|
||
|
|
// Copyright (C) The Construct Developers, Authors & Contributors
|
||
|
|
// Copyright (C) 2016-2020 Jason Volk <jason@zemos.net>
|
||
|
|
//
|
||
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
||
|
|
// purpose with or without fee is hereby granted, provided that the above
|
||
|
|
// copyright notice and this permission notice is present in all copies. The
|
||
|
|
// full license for this software is available in the LICENSE file.
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
#define HAVE_IRCD_PROF_ARM_H
|
||
|
|
|
||
|
|
/// ARM platform related
|
||
|
|
namespace ircd::prof::arm
|
||
|
|
{
|
||
|
|
unsigned long long read_virtual_counter() noexcept;
|
||
|
|
}
|
||
|
|
|
||
|
|
#if defined(__aarch64__)
|
||
|
|
extern inline unsigned long long
|
||
|
|
__attribute__((always_inline, gnu_inline, artificial))
|
||
|
|
ircd::prof::arm::read_virtual_counter()
|
||
|
|
noexcept
|
||
|
|
{
|
||
|
|
unsigned long long ret;
|
||
|
|
asm volatile
|
||
|
|
(
|
||
|
|
"mrs %0, cntvct_el0"
|
||
|
|
: "=r" (ret)
|
||
|
|
);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
extern inline unsigned long long
|
||
|
|
__attribute__((always_inline, gnu_inline, artificial))
|
||
|
|
ircd::prof::arm::read_virtual_counter()
|
||
|
|
noexcept
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
#endif
|