crt files for m68k.

Synced with r22648.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22653 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/glue/arch/m68k/Jamfile

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+SubDir HAIKU_TOP src system glue arch m68k ;
+
+KernelObjects
+	crti.S
+	crtn.S
+	;
+

src/system/glue/arch/m68k/crti.S

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+/*
+ * 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):
+	jsr	_init_before
+	// crtbegin.o stuff comes here
+
+.section .fini
+FUNCTION(_fini):
+	jsr	_term_before
+	// crtbegin.o stuff comes here

src/system/glue/arch/m68k/crtn.S

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+/*
+ * 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
+	jsr	_init_after
+	rts
+
+.section .fini
+	// the image ID and program args are still on the stack
+	jsr	_term_after
+	rts