mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-18 09:56:40 +00:00
93 lines
5 KiB
C++
93 lines
5 KiB
C++
/*
|
|
* Copyright (c) Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#pragma once
|
|
#include <vapours/svc/svc_common.hpp>
|
|
#include <vapours/svc/svc_select_hardware_constants.hpp>
|
|
|
|
namespace ams::svc {
|
|
|
|
class Tick {
|
|
public:
|
|
static constexpr s64 TicksPerSecond = ::ams::svc::TicksPerSecond;
|
|
static consteval s64 GetTicksPerSecond() { return TicksPerSecond; }
|
|
private:
|
|
s64 m_tick;
|
|
private:
|
|
static constexpr s64 NanoSecondsPerSecond = TimeSpan::FromSeconds(1).GetNanoSeconds();
|
|
|
|
static constexpr ALWAYS_INLINE s64 ConvertTimeSpanToTickImpl(TimeSpan ts) {
|
|
/* Get nano-seconds. */
|
|
const s64 ns = ts.GetNanoSeconds();
|
|
|
|
/* Special-case optimize arm64/nintendo-nx value. */
|
|
if (!std::is_constant_evaluated()) {
|
|
if constexpr (TicksPerSecond == 19'200'000) {
|
|
#if defined(ATMOSPHERE_IS_MESOSPHERE) && defined(ATMOSPHERE_ARCH_ARM64)
|
|
s64 t0, t1, t2, t3;
|
|
__asm__ __volatile__("mov %[t1], #0x5A53\n"
|
|
"movk %[t1], #0xA09B, lsl #16\n"
|
|
"lsr %[t0], %[ns], #9\n"
|
|
"movk %[t1], #0xB82F, lsl #32\n"
|
|
"movk %[t1], #0x0044, lsl #48\n"
|
|
"umulh %[t0], %[t0], %[t1]\n"
|
|
"mov %[t1], #0xFFFFFFFFFFFF3600\n"
|
|
"movk %[t1], #0xC465, lsl #16\n"
|
|
"lsr %[t0], %[t0], #0xB\n"
|
|
"madd %[t1], %[t0], %[t1], %[ns]\n"
|
|
"mov %w[t2], #0xF800\n"
|
|
"movk %w[t2], #0x0124, lsl #16\n"
|
|
"mov %w[t3], #0xCA00\n"
|
|
"movk %w[t3], #0x3B9A, lsl #16\n"
|
|
"madd %[t1], %[t1], %[t2], %[t3]\n"
|
|
"mov %[t3], #0x94B3\n"
|
|
"movk %[t3], #0x26D6, lsl #16\n"
|
|
"movk %[t3], #0x0BE8, lsl #32\n"
|
|
"movk %[t3], #0x112E, lsl #48\n"
|
|
"sub %[t1], %[t1], #1\n"
|
|
"smulh %[t1], %[t1], %[t3]\n"
|
|
"asr %[t3], %[t1], #26\n"
|
|
"add %[t1], %[t3], %[t1], lsr #63\n"
|
|
"madd %[t0], %[t0], %[t2], %[t1]\n"
|
|
: [t0]"=&r"(t0), [t1]"=&r"(t1), [t2]"=&r"(t2), [t3]"=&r"(t3)
|
|
: [ns]"r"(ns)
|
|
: "cc");
|
|
return t0;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
return util::ScaleByConstantFactorUp<s64, TicksPerSecond, NanoSecondsPerSecond>(ns);
|
|
}
|
|
public:
|
|
constexpr ALWAYS_INLINE explicit Tick(s64 t = 0) : m_tick(t) { /* ... */ }
|
|
constexpr ALWAYS_INLINE Tick(TimeSpan ts) : m_tick(ConvertTimeSpanToTickImpl(ts)) { /* ... */ }
|
|
|
|
constexpr ALWAYS_INLINE operator s64() const { return m_tick; }
|
|
|
|
/* Tick arithmetic. */
|
|
constexpr ALWAYS_INLINE Tick &operator+=(Tick rhs) { m_tick += rhs.m_tick; return *this; }
|
|
constexpr ALWAYS_INLINE Tick &operator-=(Tick rhs) { m_tick -= rhs.m_tick; return *this; }
|
|
constexpr ALWAYS_INLINE Tick operator+(Tick rhs) const { Tick r(*this); return r += rhs; }
|
|
constexpr ALWAYS_INLINE Tick operator-(Tick rhs) const { Tick r(*this); return r -= rhs; }
|
|
|
|
constexpr ALWAYS_INLINE Tick &operator+=(TimeSpan rhs) { m_tick += Tick(rhs).m_tick; return *this; }
|
|
constexpr ALWAYS_INLINE Tick &operator-=(TimeSpan rhs) { m_tick -= Tick(rhs).m_tick; return *this; }
|
|
constexpr ALWAYS_INLINE Tick operator+(TimeSpan rhs) const { Tick r(*this); return r += rhs; }
|
|
constexpr ALWAYS_INLINE Tick operator-(TimeSpan rhs) const { Tick r(*this); return r -= rhs; }
|
|
};
|
|
|
|
}
|