From 7da4550eea43a5ec83d1afc88022aaa62827febc Mon Sep 17 00:00:00 2001
From: WaluigiWare64 <68647953+WaluigiWare64@users.noreply.github.com>
Date: Sun, 29 Nov 2020 08:11:33 -0800
Subject: Add support for macOS (#771)

* use shm_open() instead of memfd_create() on macOS

malloc.h isn't a header on macOS

* Change OpenGL headers + create ifdef for DO_PROCLIST

macOS seems to already have the OpenGL functions defined, without the ifdef, it gives "ambiguous references" errors.

* macOS doesn't have ->gregs in uc_mcontext

and it doesn't have REG_RIP either
https://github.com/gperftools/gperftools/blob/master/m4/pc_from_ucontext.m4

* use getpid() to make memory file name unique

* #ifndef __APPLE__ for AF_PACKET and linux/if_packet.h

* Add include and link directories for macOS and link the OpenGL framework

* Add macOS CI

* Use newly added libslirp package from Homebrew

https://github.com/Homebrew/homebrew-core/pull/63412

* Use Apple's Clang instead of GNU GCC on macOS

* Add macOS build instructions to README

* Try to fix macOS undefined symbol

* snprintf doesn't take null terminator into account

* Map new memory on macOS for JIT

* Only use gcc-ar if using GNU Compiler

* re-add fastmem code - whoops!

* Fix style issue - use camelCase not snake_case

* Set Minimum macOS version

* Switch Minimum OS X version to 10.9

* Add macOS libpcap library name

* fix memory leak

* Fix binding keys in macOS

* Allow getting MAC address on macOS

melonDS on Linux uses AF_PACKET, which doesn't exist on macOS. Instead, this commit uses AF_LINK on macOS to get the MAC address.

* Remove unneeded macOS CI dependencies

* Build melonDS app bundle on macOS

Now it is no longer required to install the libraries on macOS, they come with the app bundle.

* fix macOS CI not being able to find macdeployqt

* copy melonDS.app with recursive because it's a folder

* Disable fastmem checkbox on macOS

* Disable fastmem by default in config

* forgot a semicolon

* Don't bundle libraries, causes issues on macOS <10.15

* Update README + allow finding version in Finder on macOS

* Make sure fastmem checkbox stays uncheckable
---
 src/ARMJIT_x64/ARMJIT_Compiler.cpp |  2 ++
 src/ARMJIT_x64/ARMJIT_Linkage.s    | 10 ++++++++++
 2 files changed, 12 insertions(+)

(limited to 'src/ARMJIT_x64')

diff --git a/src/ARMJIT_x64/ARMJIT_Compiler.cpp b/src/ARMJIT_x64/ARMJIT_Compiler.cpp
index 076f48c..cc4ad80 100644
--- a/src/ARMJIT_x64/ARMJIT_Compiler.cpp
+++ b/src/ARMJIT_x64/ARMJIT_Compiler.cpp
@@ -221,6 +221,8 @@ Compiler::Compiler()
     #ifdef _WIN32
         DWORD dummy;
         VirtualProtect(pageAligned, alignedSize, PAGE_EXECUTE_READWRITE, &dummy);
+    #elif defined(__APPLE__)
+        pageAligned = (u8*)mmap(NULL, 1024*1024*32, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS ,-1, 0);
     #else
         mprotect(pageAligned, alignedSize, PROT_EXEC | PROT_READ | PROT_WRITE);
     #endif
diff --git a/src/ARMJIT_x64/ARMJIT_Linkage.s b/src/ARMJIT_x64/ARMJIT_Linkage.s
index 0a84df0..8cc0b5f 100644
--- a/src/ARMJIT_x64/ARMJIT_Linkage.s
+++ b/src/ARMJIT_x64/ARMJIT_Linkage.s
@@ -29,8 +29,13 @@
 
 .p2align 4,,15
 
+#ifdef __APPLE__
+.global _ARM_Dispatch
+_ARM_Dispatch:
+#else
 .global ARM_Dispatch
 ARM_Dispatch:
+#endif
 #ifdef WIN64
     push rdi
     push rsi
@@ -54,8 +59,13 @@ ARM_Dispatch:
 
 .p2align 4,,15
 
+#ifdef __APPLE__
+.global _ARM_Ret
+_ARM_Ret:
+#else
 .global ARM_Ret
 ARM_Ret:
+#endif
     mov [RCPU + ARM_CPSR_offset], RCPSR
 
 #ifdef WIN64
-- 
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