79 lines
1.9 KiB
C++
79 lines
1.9 KiB
C++
/*
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Copyright 2021 flyinghead
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This file is part of Flycast.
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Flycast is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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Flycast is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Flycast. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "mem_watch.h"
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#include "oslib/virtmem.h"
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namespace memwatch
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{
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VramWatcher vramWatcher;
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RamWatcher ramWatcher;
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AicaRamWatcher aramWatcher;
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ElanRamWatcher elanWatcher;
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void AicaRamWatcher::protectMem(u32 addr, u32 size)
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{
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size = std::min(ARAM_SIZE - addr, size) & ~PAGE_MASK;
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virtmem::region_lock(&aica::aica_ram[addr], size);
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}
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void AicaRamWatcher::unprotectMem(u32 addr, u32 size)
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{
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size = std::min(ARAM_SIZE - addr, size) & ~PAGE_MASK;
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virtmem::region_unlock(&aica::aica_ram[addr], size);
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}
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u32 AicaRamWatcher::getMemOffset(void *p)
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{
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if ((u8 *)p < &aica::aica_ram[0] || (u8 *)p >= &aica::aica_ram[ARAM_SIZE])
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return -1;
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return (u32)((u8 *)p - &aica::aica_ram[0]);
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}
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void ElanRamWatcher::protectMem(u32 addr, u32 size)
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{
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using namespace elan;
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if (ERAM_SIZE != 0)
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{
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size = std::min(ERAM_SIZE - addr, size) & ~PAGE_MASK;
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virtmem::region_lock(RAM + addr, size);
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}
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}
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void ElanRamWatcher::unprotectMem(u32 addr, u32 size)
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{
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using namespace elan;
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if (ERAM_SIZE != 0)
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{
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size = std::min(ERAM_SIZE - addr, size) & ~PAGE_MASK;
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virtmem::region_unlock(RAM + addr, size);
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}
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}
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u32 ElanRamWatcher::getMemOffset(void *p)
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{
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using namespace elan;
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if ((u8 *)p < RAM || (u8 *)p >= &RAM[ERAM_SIZE])
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return -1;
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return (u32)((u8 *)p - RAM);
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}
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}
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