head	1.1;
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	pkgsrc-2026Q1:1.1.0.20
	pkgsrc-2026Q1-base:1.1
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locks; strict;
comment	@// @;


1.1
date	2023.11.14.17.57.41;	author nia;	state Exp;
branches;
next	;
commitid	6j4nJUj41nclxBME;


desc
@@


1.1
log
@Import emulators/duckstation-qt

DuckStation is an simulator/emulator of the Sony PlayStation(TM) console,
focusing on playability, speed, and long-term maintainability. The goal is
to be as accurate as possible while maintaining performance suitable for
low-end devices.

A "BIOS" ROM image is required to to start the emulator and to play games.
You can use an image from any hardware version or region, although mismatching
game regions and BIOS regions may have compatibility issues.
@
text
@$NetBSD$

NetBSD (and more POSIX platforms) support.

--- src/util/memory_arena.cpp.orig	2023-08-12 04:46:09.000000000 +0000
+++ src/util/memory_arena.cpp
@@@@ -16,7 +16,7 @@@@ Log_SetChannel(Common::MemoryArena);
 #include <sys/ioctl.h>
 #include <sys/mman.h>
 #include <unistd.h>
-#elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)
+#else
 #include <cerrno>
 #include <fcntl.h>
 #include <sys/mman.h>
@@@@ -76,16 +76,14 @@@@ void* MemoryArena::FindBaseAddressForMap
   base_address = VirtualAlloc(nullptr, size, MEM_RESERVE, PAGE_READWRITE);
   if (base_address)
     VirtualFree(base_address, 0, MEM_RELEASE);
-#elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)
-  base_address = mmap(nullptr, size, PROT_NONE, MAP_ANON | MAP_PRIVATE, -1, 0);
-  if (base_address)
-    munmap(base_address, size);
 #elif defined(__ANDROID__)
   base_address = mmap(nullptr, size, PROT_NONE, MAP_ANON | MAP_SHARED, -1, 0);
   if (base_address)
     munmap(base_address, size);
 #else
-  base_address = nullptr;
+  base_address = mmap(nullptr, size, PROT_NONE, MAP_ANON | MAP_PRIVATE, -1, 0);
+  if (base_address)
+    munmap(base_address, size);
 #endif
 
   if (!base_address)
@@@@ -110,13 +108,11 @@@@ static std::string GetFileMappingName()
 {
 #if defined(_WIN32)
   const unsigned pid = GetCurrentProcessId();
-#elif defined(__ANDROID__) || defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)
-  const unsigned pid = static_cast<unsigned>(getpid());
 #else
-#error Unknown platform.
+  const unsigned pid = static_cast<unsigned>(getpid());
 #endif
 
-  const std::string ret(StringUtil::StdStringFromFormat("duckstation_%u", pid));
+  const std::string ret(StringUtil::StdStringFromFormat("/duckstation_%u", pid));
   Log_InfoPrintf("File mapping name: %s", ret.c_str());
   return ret;
 }
@@@@ -176,11 +172,11 @@@@ bool MemoryArena::Create(size_t size, bo
   m_writable = writable;
   m_executable = executable;
   return true;
-#elif defined(__APPLE__) || defined(__FreeBSD__)
-#if defined(__APPLE__)
-  m_shmem_fd = shm_open(file_mapping_name.c_str(), O_CREAT | O_EXCL | (writable ? O_RDWR : O_RDONLY), 0600);
 #else
+#ifdef SHM_ANON
   m_shmem_fd = shm_open(SHM_ANON, O_CREAT | O_EXCL | (writable ? O_RDWR : O_RDONLY), 0600);
+#else
+  m_shmem_fd = shm_open(file_mapping_name.c_str(), O_CREAT | O_EXCL | (writable ? O_RDWR : O_RDONLY), 0600);
 #endif
 
   if (m_shmem_fd < 0)
@@@@ -189,7 +185,7 @@@@ bool MemoryArena::Create(size_t size, bo
     return false;
   }
 
-#ifdef __APPLE__
+#ifndef SHM_ANON
   // we're not going to be opening this mapping in other processes, so remove the file
   shm_unlink(file_mapping_name.c_str());
 #endif
@@@@ -205,8 +201,6 @@@@ bool MemoryArena::Create(size_t size, bo
   m_writable = writable;
   m_executable = executable;
   return true;
-#else
-  return false;
 #endif
 }
 
@@@@ -218,7 +212,7 @@@@ void MemoryArena::Destroy()
     CloseHandle(m_file_handle);
     m_file_handle = nullptr;
   }
-#elif defined(__linux__) || defined(__FreeBSD__)
+#elif defined(__linux__) || defined(SHM_ANON)
   if (m_shmem_fd > 0)
   {
     close(m_shmem_fd);
@@@@ -256,14 +250,12 @@@@ void* MemoryArena::CreateViewPtr(size_t 
     MapViewOfFileEx(m_file_handle, desired_access, Truncate32(offset >> 32), Truncate32(offset), size, fixed_address);
   if (!base_pointer)
     return nullptr;
-#elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)
+#else
   const int flags = (fixed_address != nullptr) ? (MAP_SHARED | MAP_FIXED) : MAP_SHARED;
   const int prot = PROT_READ | (writable ? PROT_WRITE : 0) | (executable ? PROT_EXEC : 0);
   base_pointer = mmap(fixed_address, size, prot, flags, m_shmem_fd, static_cast<off_t>(offset));
   if (base_pointer == reinterpret_cast<void*>(-1))
     return nullptr;
-#else
-  return nullptr;
 #endif
 
   m_num_views.fetch_add(1);
@@@@ -274,10 +266,8 @@@@ bool MemoryArena::FlushViewPtr(void* add
 {
 #if defined(_WIN32)
   return FlushViewOfFile(address, size);
-#elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)
-  return (msync(address, size, 0) >= 0);
 #else
-  return false;
+  return (msync(address, size, 0) >= 0);
 #endif
 }
 
@@@@ -286,10 +276,8 @@@@ bool MemoryArena::ReleaseViewPtr(void* a
   bool result;
 #if defined(_WIN32)
   result = static_cast<bool>(UnmapViewOfFile(address));
-#elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)
-  result = (munmap(address, size) >= 0);
 #else
-  result = false;
+  result = (munmap(address, size) >= 0);
 #endif
 
   if (!result)
@@@@ -308,14 +296,12 @@@@ void* MemoryArena::CreateReservedPtr(siz
   void* base_pointer;
 #if defined(_WIN32)
   base_pointer = VirtualAlloc(fixed_address, size, MEM_RESERVE, PAGE_NOACCESS);
-#elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)
+#else
   const int flags =
     (fixed_address != nullptr) ? (MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED) : (MAP_PRIVATE | MAP_ANONYMOUS);
   base_pointer = mmap(fixed_address, size, PROT_NONE, flags, -1, 0);
   if (base_pointer == reinterpret_cast<void*>(-1))
     return nullptr;
-#else
-  return nullptr;
 #endif
 
   m_num_views.fetch_add(1);
@@@@ -327,10 +313,8 @@@@ bool MemoryArena::ReleaseReservedPtr(voi
   bool result;
 #if defined(_WIN32)
   result = static_cast<bool>(VirtualFree(address, 0, MEM_RELEASE));
-#elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)
-  result = (munmap(address, size) >= 0);
 #else
-  result = false;
+  result = (munmap(address, size) >= 0);
 #endif
 
   if (!result)
@@@@ -354,11 +338,9 @@@@ bool MemoryArena::SetPageProtection(void
   DWORD old_protect;
   return static_cast<bool>(
     VirtualProtect(address, length, protection_table[readable][writable][executable], &old_protect));
-#elif defined(__linux__) || defined(__ANDROID__) || defined(__APPLE__) || defined(__FreeBSD__)
+#else
   const int prot = (readable ? PROT_READ : 0) | (writable ? PROT_WRITE : 0) | (executable ? PROT_EXEC : 0);
   return (mprotect(address, length, prot) >= 0);
-#else
-  return false;
 #endif
 }
 
@