2009-09-08 12:08:10 +00:00
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/* PCSX2 - PS2 Emulator for PCs
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2023-06-14 15:36:54 +00:00
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* Copyright (C) 2002-2023 PCSX2 Dev Team
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2009-09-21 09:48:31 +00:00
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*
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2009-09-08 12:08:10 +00:00
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* PCSX2 is free software: you can redistribute it and/or modify it under the terms
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* of the GNU Lesser General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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2009-07-03 00:49:40 +00:00
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*
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2009-09-08 12:08:10 +00:00
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* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with PCSX2.
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* If not, see <http://www.gnu.org/licenses/>.
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2009-07-03 00:49:40 +00:00
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*/
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#pragma once
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2023-06-14 15:36:54 +00:00
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#include "common/Pcsx2Defs.h"
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2021-09-01 20:31:46 +00:00
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#include <atomic>
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2022-10-12 13:57:53 +00:00
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#include <map>
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#include <memory>
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2022-05-18 13:27:23 +00:00
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#include <string>
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2023-06-14 15:36:54 +00:00
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#include <cstring>
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2021-09-01 20:31:46 +00:00
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2010-01-22 15:22:01 +00:00
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// This macro is actually useful for about any and every possible application of C++
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// equality operators.
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2016-11-12 15:28:37 +00:00
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#define OpEqu(field) (field == right.field)
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2010-01-22 15:22:01 +00:00
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// Macro used for removing some of the redtape involved in defining bitfield/union helpers.
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//
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2016-11-12 15:28:37 +00:00
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#define BITFIELD32() \
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2021-09-06 18:28:26 +00:00
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union \
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{ \
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u32 bitset; \
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struct \
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{
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2010-01-22 15:22:01 +00:00
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2016-11-12 15:28:37 +00:00
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#define BITFIELD_END \
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2021-09-06 18:28:26 +00:00
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}; \
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};
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2010-01-22 15:22:01 +00:00
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// --------------------------------------------------------------------------------------
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2010-10-22 16:23:52 +00:00
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// PageProtectionMode
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// --------------------------------------------------------------------------------------
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class PageProtectionMode
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2009-07-03 00:49:40 +00:00
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{
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2010-10-22 16:23:52 +00:00
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protected:
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2021-09-06 18:28:26 +00:00
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bool m_read;
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bool m_write;
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bool m_exec;
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2010-10-22 16:23:52 +00:00
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public:
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2021-09-06 18:28:26 +00:00
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PageProtectionMode()
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{
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All(false);
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}
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PageProtectionMode& Read(bool allow = true)
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{
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m_read = allow;
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return *this;
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}
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PageProtectionMode& Write(bool allow = true)
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{
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m_write = allow;
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return *this;
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}
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PageProtectionMode& Execute(bool allow = true)
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{
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m_exec = allow;
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return *this;
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}
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PageProtectionMode& All(bool allow = true)
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{
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m_read = m_write = m_exec = allow;
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return *this;
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}
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bool CanRead() const { return m_read; }
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bool CanWrite() const { return m_write; }
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bool CanExecute() const { return m_exec && m_read; }
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bool IsNone() const { return !m_read && !m_write; }
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2022-05-18 13:27:23 +00:00
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std::string ToString() const;
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2009-07-03 00:49:40 +00:00
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};
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2010-10-22 16:23:52 +00:00
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static __fi PageProtectionMode PageAccess_None()
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{
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2021-09-06 18:28:26 +00:00
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return PageProtectionMode();
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2010-10-22 16:23:52 +00:00
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}
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static __fi PageProtectionMode PageAccess_ReadOnly()
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{
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2021-09-06 18:28:26 +00:00
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return PageProtectionMode().Read();
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2010-10-22 16:23:52 +00:00
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}
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static __fi PageProtectionMode PageAccess_WriteOnly()
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{
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2021-09-06 18:28:26 +00:00
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return PageProtectionMode().Write();
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2010-10-22 16:23:52 +00:00
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}
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static __fi PageProtectionMode PageAccess_ReadWrite()
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{
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2021-09-06 18:28:26 +00:00
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return PageAccess_ReadOnly().Write();
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2010-10-22 16:23:52 +00:00
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}
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static __fi PageProtectionMode PageAccess_ExecOnly()
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{
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2021-09-06 18:28:26 +00:00
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return PageAccess_ReadOnly().Execute();
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2010-10-22 16:23:52 +00:00
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}
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static __fi PageProtectionMode PageAccess_Any()
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{
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2021-09-06 18:28:26 +00:00
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return PageProtectionMode().All();
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2010-10-22 16:23:52 +00:00
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}
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2022-12-28 06:53:37 +00:00
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struct PageFaultInfo
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{
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uptr pc;
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uptr addr;
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};
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using PageFaultHandler = bool(*)(const PageFaultInfo& info);
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2010-01-22 15:22:01 +00:00
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// --------------------------------------------------------------------------------------
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// HostSys
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// --------------------------------------------------------------------------------------
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2009-07-03 00:49:40 +00:00
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namespace HostSys
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{
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2021-09-06 18:28:26 +00:00
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// Maps a block of memory for use as a recompiled code buffer.
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// Returns NULL on allocation failure.
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2022-10-12 13:57:53 +00:00
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extern void* Mmap(void* base, size_t size, const PageProtectionMode& mode);
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2009-07-03 00:49:40 +00:00
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2021-09-06 18:28:26 +00:00
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// Unmaps a block allocated by SysMmap
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2022-10-12 13:57:53 +00:00
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extern void Munmap(void* base, size_t size);
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2009-07-03 00:49:40 +00:00
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2021-09-06 18:28:26 +00:00
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extern void MemProtect(void* baseaddr, size_t size, const PageProtectionMode& mode);
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2009-07-03 00:49:40 +00:00
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2021-09-06 18:28:26 +00:00
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template <uint size>
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void MemProtectStatic(u8 (&arr)[size], const PageProtectionMode& mode)
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{
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MemProtect(arr, size, mode);
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}
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2022-10-12 13:57:53 +00:00
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extern std::string GetFileMappingName(const char* prefix);
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extern void* CreateSharedMemory(const char* name, size_t size);
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extern void DestroySharedMemory(void* ptr);
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extern void* MapSharedMemory(void* handle, size_t offset, void* baseaddr, size_t size, const PageProtectionMode& mode);
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extern void UnmapSharedMemory(void* baseaddr, size_t size);
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2022-12-28 06:53:37 +00:00
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/// Installs the specified page fault handler. Only one handler can be active at once.
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bool InstallPageFaultHandler(PageFaultHandler handler);
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/// Removes the page fault handler. handler is only specified to check against the active callback.
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void RemovePageFaultHandler(PageFaultHandler handler);
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2022-10-12 13:57:53 +00:00
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}
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2009-07-03 00:49:40 +00:00
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2022-10-29 03:39:19 +00:00
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class SharedMemoryMappingArea
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{
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public:
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static std::unique_ptr<SharedMemoryMappingArea> Create(size_t size);
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~SharedMemoryMappingArea();
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__fi size_t GetSize() const { return m_size; }
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__fi size_t GetNumPages() const { return m_num_pages; }
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__fi u8* BasePointer() const { return m_base_ptr; }
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__fi u8* OffsetPointer(size_t offset) const { return m_base_ptr + offset; }
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__fi u8* PagePointer(size_t page) const { return m_base_ptr + __pagesize * page; }
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u8* Map(void* file_handle, size_t file_offset, void* map_base, size_t map_size, const PageProtectionMode& mode);
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bool Unmap(void* map_base, size_t map_size);
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private:
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SharedMemoryMappingArea(u8* base_ptr, size_t size, size_t num_pages);
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u8* m_base_ptr;
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size_t m_size;
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size_t m_num_pages;
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size_t m_num_mappings = 0;
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#ifdef _WIN32
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using PlaceholderMap = std::map<size_t, size_t>;
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PlaceholderMap::iterator FindPlaceholder(size_t page);
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PlaceholderMap m_placeholder_ranges;
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#endif
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};
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2010-10-18 01:40:49 +00:00
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// Safe version of Munmap -- NULLs the pointer variable immediately after free'ing it.
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2016-11-12 15:28:37 +00:00
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#define SafeSysMunmap(ptr, size) \
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2022-10-12 13:57:53 +00:00
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((void)(HostSys::Munmap(ptr, size), (ptr) = 0))
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2009-07-03 00:49:40 +00:00
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2016-11-12 15:28:37 +00:00
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extern u64 GetTickFrequency();
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extern u64 GetCPUTicks();
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2010-11-23 21:32:52 +00:00
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extern u64 GetPhysicalMemory();
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2021-03-28 07:50:18 +00:00
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/// Spin for a short period of time (call while spinning waiting for a lock)
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/// Returns the approximate number of ns that passed
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extern u32 ShortSpin();
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/// Number of ns to spin for before sleeping a thread
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extern const u32 SPIN_TIME_NS;
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2022-05-30 05:49:07 +00:00
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/// Like C abort() but adds the given message to the crashlog
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[[noreturn]] void AbortWithMessage(const char* msg);
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2009-11-26 03:37:10 +00:00
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2022-05-18 13:27:23 +00:00
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extern std::string GetOSVersionString();
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2015-02-26 02:08:58 +00:00
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2022-04-18 13:35:14 +00:00
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namespace Common
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{
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/// Abstracts platform-specific code for asynchronously playing a sound.
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/// On Windows, this will use PlaySound(). On Linux, it will shell out to aplay. On MacOS, it uses NSSound.
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bool PlaySoundAsync(const char* path);
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} // namespace Common
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