Upgrades to Xcode project and Apple Silicon support

- Reorganized Xcode project
- Added missionpack support to Xcode project
- Incorporated changes from MaddTheSane for Apple Silicon support https://github.com/maddthesane/ioq3
- Built SDL 2.0.14 for Apple Siicon, added to existing SDL dylib
- Built SDLMain for Apple Silicon, added to existing libSDL2main.a

code/asm/ftola.c

@@ -22,6 +22,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
 #include "qasm-inline.h"
 
+#if defined (__i386__) || defined(__x86_64__)
 static const unsigned short fpucw = 0x0C7F;
 
 /*
@@ -97,3 +98,4 @@ int qvmftolx87(void)
   
   return retval;
 }
+#endif

code/asm/snapvector.c

@@ -23,6 +23,8 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #include "qasm-inline.h"
 #include "../qcommon/q_shared.h"
 
+#if defined (__i386__) || defined(__x86_64__)
+
 /*
  * GNU inline asm version of qsnapvector
  * See MASM snapvector.asm for commentary
@@ -71,3 +73,5 @@ void qsnapvectorx87(vec3_t vec)
 		: "memory"
 	);
 }
+
+#endif

code/opus-1.2.1/celt/x86/celt_lpc_sse.c

@@ -29,6 +29,8 @@
 #include "config.h"
 #endif
 
+#if defined (__i386__) || defined(__x86_64__)
+
 #include <xmmintrin.h>
 #include <emmintrin.h>
 #include <smmintrin.h>
@@ -87,3 +89,4 @@ void celt_fir_sse4_1(const opus_val16 *x,
 }
 
 #endif
+#endif

code/opus-1.2.1/celt/x86/pitch_sse2.c

@@ -29,6 +29,7 @@
 #include "config.h"
 #endif
 
+#if defined (__i386__) || defined(__x86_64__)
 #include <xmmintrin.h>
 #include <emmintrin.h>
 
@@ -93,3 +94,4 @@ opus_val32 celt_inner_prod_sse2(const opus_val16 *x, const opus_val16 *y,
     return sum;
 }
 #endif
+#endif

code/opus-1.2.1/celt/x86/pitch_sse4_1.c

@@ -29,6 +29,8 @@
 #include "config.h"
 #endif
 
+#if defined (__i386__) || defined(__x86_64__)
+
 #include <xmmintrin.h>
 #include <emmintrin.h>
 
@@ -193,3 +195,4 @@ void xcorr_kernel_sse4_1(const opus_val16 * x, const opus_val16 * y, opus_val32
     _mm_storeu_si128((__m128i *)sum, initSum);
 }
 #endif
+#endif

code/opus-1.2.1/celt/x86/vq_sse2.c

@@ -30,6 +30,8 @@
 #include "config.h"
 #endif
 
+#if defined (__i386__) || defined(__x86_64__)
+
 #include <xmmintrin.h>
 #include <emmintrin.h>
 #include "celt_lpc.h"
@@ -215,3 +217,4 @@ opus_val16 op_pvq_search_sse2(celt_norm *_X, int *iy, int K, int N, int arch)
 }
 
 #endif
+#endif

code/opus-1.2.1/silk/x86/VAD_sse.c

@@ -29,6 +29,8 @@
 #include "config.h"
 #endif
 
+#if defined (__i386__) || defined(__x86_64__)
+
 #include <xmmintrin.h>
 #include <emmintrin.h>
 #include <smmintrin.h>
@@ -275,3 +277,4 @@ opus_int silk_VAD_GetSA_Q8_sse4_1(                  /* O    Return value, 0 if s
     RESTORE_STACK;
     return( ret );
 }
+#endif

code/qcommon/q_platform.h

@@ -156,6 +156,12 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #define idx64 1
 #define ARCH_STRING "x86_64"
 #define Q3_LITTLE_ENDIAN
+#elif defined __aarch64__
+#define ARCH_STRING "arm64"
+#define Q3_LITTLE_ENDIAN
+#ifndef NO_VM_COMPILED
+#define NO_VM_COMPILED
+#endif
 #endif
 
 #define DLL_EXT ".dylib"

code/qcommon/vm_x86.c

@@ -42,6 +42,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
   #endif
 #endif
 
+#if defined (__i386__) || defined(__x86_64__)
 static void VM_Destroy_Compiled(vm_t* self);
 
 /*
@@ -1807,3 +1808,4 @@ int VM_CallCompiled(vm_t *vm, int *args)
 
 	return opStack[opStackOfs];
 }
+#endif

code/sys/sys_osx.m

@@ -50,9 +50,9 @@ dialogResult_t Sys_Dialog( dialogType_t type, const char *message, const char *t
 	[alert setInformativeText: [NSString stringWithUTF8String: message]];
 
 	if( type == DT_ERROR )
-		[alert setAlertStyle: NSCriticalAlertStyle];
+		[alert setAlertStyle: NSAlertStyleCritical];
 	else
-		[alert setAlertStyle: NSWarningAlertStyle];
+		[alert setAlertStyle: NSAlertStyleWarning];
 
 	switch( type )
 	{