From 6fcfe7f4f38f7f411ce8aa0a7752e272c65dc1f3 Mon Sep 17 00:00:00 2001
From: innix <dev@innix.space>
Date: Mon, 1 Sep 2025 09:23:03 +0200
Subject: [macOS, compat] Allow games to boot in MacOS (#372)

This fixes the crashes on game launch caused by MacOS not being present in host_manager.cpp and enables primitiveRestart for MoltenVK to suppress a bunch of errors given in the log about  MoltenVK requiring primitiveRestart. Fixes an crash when switching kingdoms in Mario Odyssey as well

EDS is forced to 0, otherwise games do not show graphics

Note: For now only dynarmicc is working, performance will be slow
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/372
Reviewed-by: Lizzie <lizzie@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-by: MaranBr <maranbr@outlook.com>
Co-authored-by: innix <dev@innix.space>
Co-committed-by: innix <dev@innix.space>
---
 src/common/host_memory.cpp | 29 ++++++++++++++++++++++++-----
 1 file changed, 24 insertions(+), 5 deletions(-)

(limited to 'src/common/host_memory.cpp')

diff --git a/src/common/host_memory.cpp b/src/common/host_memory.cpp
index e70ac216cb..15a198e216 100644
--- a/src/common/host_memory.cpp
+++ b/src/common/host_memory.cpp
@@ -12,7 +12,7 @@
 #include <windows.h>
 #include "common/dynamic_library.h"
 
-#elif defined(__linux__) || defined(__FreeBSD__) || defined(__sun__) // ^^^ Windows ^^^ vvv Linux vvv
+#elif defined(__linux__) || defined(__FreeBSD__) || defined(__sun__) || defined(__APPLE__) // ^^^ Windows ^^^ vvv POSIX vvv
 
 #ifndef _GNU_SOURCE
 #define _GNU_SOURCE
@@ -20,10 +20,18 @@
 #include <boost/icl/interval_set.hpp>
 #include <fcntl.h>
 #include <sys/mman.h>
-#include <sys/random.h>
 #include <unistd.h>
 #include "common/scope_exit.h"
 
+#if defined(__linux__)
+#include <sys/random.h>
+#elif defined(__APPLE__)
+#include <sys/types.h>
+#include <sys/random.h>
+#include <mach/vm_map.h>
+#include <mach/mach.h>
+#endif
+
 // FreeBSD
 #ifndef MAP_NORESERVE
 #define MAP_NORESERVE 0
@@ -32,8 +40,12 @@
 #ifndef MAP_ALIGNED_SUPER
 #define MAP_ALIGNED_SUPER 0
 #endif
+// macOS
+#ifndef MAP_ANONYMOUS
+#define MAP_ANONYMOUS MAP_ANON
+#endif
 
-#endif // ^^^ Linux ^^^
+#endif // ^^^ POSIX ^^^
 
 #include <mutex>
 #include <random>
@@ -372,7 +384,7 @@ private:
     std::unordered_map<size_t, size_t> placeholder_host_pointers; ///< Placeholder backing offset
 };
 
-#elif defined(__linux__) || defined(__FreeBSD__) || defined(__sun__) // ^^^ Windows ^^^ vvv Linux vvv
+#elif defined(__linux__) || defined(__FreeBSD__) || defined(__sun__) || defined(__APPLE__) // ^^^ Windows ^^^ vvv POSIX vvv
 
 #ifdef ARCHITECTURE_arm64
 
@@ -489,6 +501,13 @@ public:
 #elif defined(__FreeBSD__) && __FreeBSD__ < 13
         // XXX Drop after FreeBSD 12.* reaches EOL on 2024-06-30
         fd = shm_open(SHM_ANON, O_RDWR, 0600);
+#elif defined(__APPLE__)
+        // macOS doesn't have memfd_create, use anonymous temporary file
+        char template_path[] = "/tmp/eden_mem_XXXXXX";
+        fd = mkstemp(template_path);
+        if (fd >= 0) {
+            unlink(template_path);
+        }
 #else
         fd = memfd_create("HostMemory", 0);
 #endif
@@ -645,7 +664,7 @@ private:
     FreeRegionManager free_manager{};
 };
 
-#else // ^^^ Linux ^^^ vvv Generic vvv
+#else // ^^^ POSIX ^^^ vvv Generic vvv
 
 class HostMemory::Impl {
 public:
-- 
cgit v1.2.3