* cris/traps.c (TARGET_SYS_writev): New macro.

	(is_mapped_only, cris_dump_map): New functions.
	(cris_break_13_handler) <case TARGET_SYS_mmap2>: Handle more flags
	and prot combinations and a non-zero page-offset.  If
	TARGET_MAP_FIXED, unmap pages before mapping them.
	<case TARGET_SYS_mprotect>: When checking, allow any length
	argument.  Don't actually do anything.
	<case TARGET_SYS_writev>: New case.