From 87b795e1c6e75dc9279124ac41be21a80bb5e014 Mon Sep 17 00:00:00 2001
From: TellowKrinkle <tellowkrinkle@gmail.com>
Date: Wed, 21 Aug 2024 03:03:21 -0500
Subject: [PATCH] Common: Remove unused functions

---
 common/HostSys.h              |  9 -------
 common/Linux/LnxHostSys.cpp   | 48 -----------------------------------
 common/Windows/WinHostSys.cpp | 39 ----------------------------
 3 files changed, 96 deletions(-)

diff --git a/common/HostSys.h b/common/HostSys.h
index 7847a84bce..5984a958c3 100644
--- a/common/HostSys.h
+++ b/common/HostSys.h
@@ -90,20 +90,11 @@ static __fi PageProtectionMode PageAccess_Any()
 // --------------------------------------------------------------------------------------
 namespace HostSys
 {
-	// Maps a block of memory for use as a recompiled code buffer.
-	// Returns NULL on allocation failure.
-	extern void* Mmap(void* base, size_t size, const PageProtectionMode& mode);
-
-	// Unmaps a block allocated by SysMmap
-	extern void Munmap(void* base, size_t size);
-
 	extern void MemProtect(void* baseaddr, size_t size, const PageProtectionMode& mode);
 
 	extern std::string GetFileMappingName(const char* prefix);
 	extern void* CreateSharedMemory(const char* name, size_t size);
 	extern void DestroySharedMemory(void* ptr);
-	extern void* MapSharedMemory(void* handle, size_t offset, void* baseaddr, size_t size, const PageProtectionMode& mode);
-	extern void UnmapSharedMemory(void* baseaddr, size_t size);
 
 	/// JIT write protect for Apple Silicon. Needs to be called prior to writing to any RWX pages.
 #if !defined(__APPLE__) || !defined(_M_ARM64)
diff --git a/common/Linux/LnxHostSys.cpp b/common/Linux/LnxHostSys.cpp
index b5128c64e2..b0074b758f 100644
--- a/common/Linux/LnxHostSys.cpp
+++ b/common/Linux/LnxHostSys.cpp
@@ -39,32 +39,6 @@ static __ri uint LinuxProt(const PageProtectionMode& mode)
 	return lnxmode;
 }
 
-void* HostSys::Mmap(void* base, size_t size, const PageProtectionMode& mode)
-{
-	pxAssertMsg((size & (__pagesize - 1)) == 0, "Size is page aligned");
-
-	if (mode.IsNone())
-		return nullptr;
-
-	const u32 prot = LinuxProt(mode);
-
-	u32 flags = MAP_PRIVATE | MAP_ANONYMOUS;
-
-	void* res = mmap(base, size, prot, flags, -1, 0);
-	if (res == MAP_FAILED)
-		return nullptr;
-
-	return res;
-}
-
-void HostSys::Munmap(void* base, size_t size)
-{
-	if (!base)
-		return;
-
-	munmap((void*)base, size);
-}
-
 void HostSys::MemProtect(void* baseaddr, size_t size, const PageProtectionMode& mode)
 {
 	pxAssertMsg((size & (__pagesize - 1)) == 0, "Size is page aligned");
@@ -114,28 +88,6 @@ void HostSys::DestroySharedMemory(void* ptr)
 	close(static_cast<int>(reinterpret_cast<intptr_t>(ptr)));
 }
 
-void* HostSys::MapSharedMemory(void* handle, size_t offset, void* baseaddr, size_t size, const PageProtectionMode& mode)
-{
-	const uint lnxmode = LinuxProt(mode);
-
-	int flags = MAP_SHARED;
-#ifdef __APPLE__
-	if (mode.CanExecute())
-		flags |= MAP_JIT;
-#endif
-	void* ptr = mmap(0, size, lnxmode, flags, static_cast<int>(reinterpret_cast<intptr_t>(handle)), static_cast<off_t>(offset));
-	if (ptr == MAP_FAILED)
-		return nullptr;
-
-	return ptr;
-}
-
-void HostSys::UnmapSharedMemory(void* baseaddr, size_t size)
-{
-	if (munmap(baseaddr, size) != 0)
-		pxFailRel("Failed to unmap shared memory");
-}
-
 #ifndef __APPLE__
 
 size_t HostSys::GetRuntimePageSize()
diff --git a/common/Windows/WinHostSys.cpp b/common/Windows/WinHostSys.cpp
index 7f05a8460e..d5e1ddf857 100644
--- a/common/Windows/WinHostSys.cpp
+++ b/common/Windows/WinHostSys.cpp
@@ -35,22 +35,6 @@ static DWORD ConvertToWinApi(const PageProtectionMode& mode)
 	return winmode;
 }
 
-void* HostSys::Mmap(void* base, size_t size, const PageProtectionMode& mode)
-{
-	if (mode.IsNone())
-		return nullptr;
-
-	return VirtualAlloc(base, size, MEM_RESERVE | MEM_COMMIT, ConvertToWinApi(mode));
-}
-
-void HostSys::Munmap(void* base, size_t size)
-{
-	if (!base)
-		return;
-
-	VirtualFree((void*)base, 0, MEM_RELEASE);
-}
-
 void HostSys::MemProtect(void* baseaddr, size_t size, const PageProtectionMode& mode)
 {
 	pxAssert((size & (__pagesize - 1)) == 0);
@@ -77,29 +61,6 @@ void HostSys::DestroySharedMemory(void* ptr)
 	CloseHandle(static_cast<HANDLE>(ptr));
 }
 
-void* HostSys::MapSharedMemory(void* handle, size_t offset, void* baseaddr, size_t size, const PageProtectionMode& mode)
-{
-	void* ret = MapViewOfFileEx(static_cast<HANDLE>(handle), FILE_MAP_READ | FILE_MAP_WRITE,
-		static_cast<DWORD>(offset >> 32), static_cast<DWORD>(offset), size, baseaddr);
-	if (!ret)
-		return nullptr;
-
-	const DWORD prot = ConvertToWinApi(mode);
-	if (prot != PAGE_READWRITE)
-	{
-		DWORD old_prot;
-		if (!VirtualProtect(ret, size, prot, &old_prot))
-			pxFail("Failed to protect memory mapping");
-	}
-	return ret;
-}
-
-void HostSys::UnmapSharedMemory(void* baseaddr, size_t size)
-{
-	if (!UnmapViewOfFile(baseaddr))
-		pxFail("Failed to unmap shared memory");
-}
-
 size_t HostSys::GetRuntimePageSize()
 {
 	SYSTEM_INFO si = {};