ARM64: Initial changes so we can compile GCC toolchain

Signed-off-by: Jaroslaw Pelczar <[email protected]>
Change-Id: I0859d0619d601efd003472e2846d2f980ee2e457
Reviewed-on: https://review.haiku-os.org/c/haiku/+/1799
Reviewed-by: waddlesplash <[email protected]>

headers/config/HaikuConfig.h

@@ -56,7 +56,7 @@
 #	define __HAIKU_ARCH_ABI				"armeb"
 #	define __HAIKU_ARCH_ARM				1
 #	define __HAIKU_BIG_ENDIAN			1
-#elif defined(__arm64__)
+#elif defined(__aarch64__) || defined(__arm64__)
 #	define __HAIKU_ARCH					arm64
 #	define __HAIKU_ARCH_ABI				"arm64"
 #	define __HAIKU_ARCH_ARM64			1

headers/posix/arch/arm64/arch_setjmp.h

@@ -0,0 +1,13 @@
+/*
+ * Copyright 2019 Jaroslaw Pelczar <[email protected]>
+ * Distributed under the terms of the MIT License.
+ */
+
+#ifndef _ARCH_SETJMP_H_
+#define _ARCH_SETJMP_H_
+
+
+#define _SETJMP_BUF_SZ (32)
+typedef __int128_t __jmp_buf[_SETJMP_BUF_SZ];
+
+#endif	/* _ARCH_SETJMP_H_ */

headers/posix/arch/arm64/signal.h

@@ -11,7 +11,7 @@
  * Architecture-specific structure passed to signal handlers
  */
 
-#if defined(__arm64__)
+#if defined(__aarch64__)
 struct vregs
 {
 	ulong		x[30];
@@ -23,7 +23,7 @@ struct vregs
 	u_int		fpsr;
 	u_int		fpcr;
 };
-#endif /* defined(__arm64__) */
+#endif /* defined(__aarch64__) */
 
 
 #endif /* _ARCH_SIGNAL_H_ */

headers/posix/fenv.h

@@ -7,6 +7,8 @@
 #  include <arch/x86_64/fenv.h>
 #elif defined(__arm__)
 #  include <arch/arm/fenv.h>
+#elif defined(__aarch64__)
+#  include <arch/arm64/fenv.h>
 #elif defined(__POWERPC__)
 #  include <arch/ppc/fenv.h>
 #else