mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-24 21:02:03 +00:00
61 lines
No EOL
2.3 KiB
C++
61 lines
No EOL
2.3 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 <stratosphere.hpp>
|
|
|
|
namespace ams::os::impl {
|
|
|
|
inline void FlushDataCacheImpl(const void *addr, size_t size) {
|
|
#if defined(ATMOSPHERE_ARCH_ARM64)
|
|
{
|
|
/* Declare helper variables. */
|
|
uintptr_t cache_type_register = 0;
|
|
uintptr_t cache_line_size = 0;
|
|
const uintptr_t end_addr = reinterpret_cast<uintptr_t>(addr) + size;
|
|
|
|
/* Get the cache type register. */
|
|
__asm__ __volatile__("mrs %[cache_type_register], ctr_el0" : [cache_type_register]"=r"(cache_type_register));
|
|
|
|
/* Calculate cache line size. */
|
|
cache_line_size = 4 << ((cache_type_register >> 16) & 0xF);
|
|
|
|
/* Iterate, flushing cache lines. */
|
|
for (uintptr_t cur = reinterpret_cast<uintptr_t>(addr) & ~(cache_line_size - 1); cur < end_addr; cur += cache_line_size) {
|
|
__asm__ __volatile__ ("dc civac, %[cur]" :: [cur]"r"(cur));
|
|
}
|
|
|
|
/* Insert a memory barrier, now that memory has been flushed. */
|
|
__asm__ __volatile__("dsb sy" ::: "memory");
|
|
}
|
|
#elif defined(ATMOSPHERE_ARCH_X64) || defined(ATMOSPHERE_ARCH_X86)
|
|
/* Theoretically, do nothing here? */
|
|
AMS_UNUSED(addr, size);
|
|
__asm__ __volatile__("" ::: "memory");
|
|
#else
|
|
#error "Unknown architecture for windows DataCache"
|
|
#endif
|
|
}
|
|
|
|
inline void FlushEntireDataCacheImpl() {
|
|
#if defined(ATMOSPHERE_ARCH_X64) || defined(ATMOSPHERE_ARCH_X86)
|
|
/* Theoretically, do nothing here? */
|
|
__asm__ __volatile__("" ::: "memory");
|
|
#else
|
|
#error "Unknown architecture for windows DataCache"
|
|
#endif
|
|
}
|
|
|
|
} |