system/glue: Add arm64 glue

Change-Id: I578c0ac89e5d40f086d0b66d5711f2b78c6087e1
Reviewed-on: https://review.haiku-os.org/c/haiku/+/1840
Reviewed-by: Adrien Destugues <[email protected]>

src/system/glue/arch/arm64/Jamfile

@@ -0,0 +1,21 @@
+SubDir HAIKU_TOP src system glue arch arm64 ;
+
+local architectureObject ;
+for architectureObject in [ MultiArchSubDirSetup arm64 ] {
+	on $(architectureObject) {
+		local architecture = $(TARGET_PACKAGING_ARCH) ;
+
+		UsePrivateSystemHeaders ;
+
+		local sources =
+			crti.S
+			crtn.S
+			;
+		MergeObject <$(architecture)>glue_arch_$(TARGET_ARCH).o : $(sources) ;
+
+		if $(HAIKU_BUILD_TYPE) = bootstrap {
+			# build a version for stage0 of the bootstrap process
+			BootstrapStage0PlatformObjects [ FGristFiles $(sources) ] : true ;
+		}
+	}
+}

src/system/glue/arch/arm64/crti.S

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2005, Axel Dörfler, axeld@pinc-software.de.
+ * Distributed under the terms of the MIT License.
+ */
+
+/**	This file contains the first part of the ".init" and ".fini" sections in
+ *	the ELF executable.
+ *	The functions defined here will be called during initialization/termination
+ *	of the loaded executable/library. The ".init" and ".fini" sections are
+ *	stacked together like this:
+ *
+ *	crti.S		entry point
+ *				call to _init_before/_term_before
+ *	crtbegin.S	GCC specific: constructors/destructors are called, ...
+ *	crtend.S
+ *	crtn.S		call to _init_after/_term_after
+ *				exit
+ */
+
+#define FUNCTION(x) .global x; .type x,%function; x
+
+.section .init
+FUNCTION(_init):
+	// crtbegin.o stuff comes here
+
+.section .fini
+FUNCTION(_fini):
+	// crtbegin.o stuff comes here

src/system/glue/arch/arm64/crtn.S

@@ -0,0 +1,17 @@
+/*
+ * Copyright 2005, Axel Dörfler, axeld@pinc-software.de.
+ * Distributed under the terms of the MIT License.
+ */
+
+/**	This file contains the final part of the ".init" and ".fini" sections in
+ *	the ELF executable. It is tightly connected to crti.S.
+ *	Have a look at crti.S to find a description of what happens here.
+ */
+
+.section .init
+	// the image ID and program args are still on the stack
+
+
+.section .fini
+	// the image ID and program args are still on the stack
+