RFA: XStormy16: Fix implementation of MOVF instruction

[Nick Clifton]

Hi Dave, Hi Frank,

> I don't know that this port has a maintainer for CGEN/SID. However, I
> think that testing against a specific test case which exhibits the bug
> and running the SID testsuite for --target=xstormy16-elf should be
> sufficient. I see that there is no test case for this insn in
> sid/component/testsuite/sidcomp.cgen-cpu.xstormy16, so please add one
> before running the test suite.

The attached patch does that.  (It actually adds 4 new tests, one for 
each variant of the pre-decrement/post-increment load/store version of 
the MOVF instruction).

In the course of checking the patch I also found that all of the 
XStormy16 tests were failing because the "pass" and "fail" macros had 
not been updated to match the new parameter layout for the write 
syscall.  So the patch fixes this as well.

Then I found several testcases that were failing due to endian mistakes, 
so those have been fixed as well.

Tested with an xstormy16-elf toolchain and no regressions.

OK to apply (along with the original MOVF patch) ?

Cheers
   Nick
2010-11-02  Nick Clifton  <nickc@redhat.com>

	* testutils.inc (pass): Update parameter layout for write syscall.
	(fail): Likewise.
	* movgrgrii.cgs: Fix endianness typo in assertion.
	* movgrgriipostinc.cgs: Likewise.
	* movgrgriipredec.cgs: Likewise.
	* movgrgripostinc.cgs: Likewise.
	* movgrgripredec.cgs: Likewise.
	* movgrigr.cgs: Likewise.
	* movgriipostincgr.cgs: Likewise.
	* movgripostincgr.cgs: Likewise.
	* movgripredecgr.cgs: Likewise.
	* rrcgrgr.cgs: Rotate only inserts carry flag once.
	* rrcgrimm4.cgs: Likewise.
	* movfgrgriipostinc.cgs: New test.  Checks MOVF load with
	post increment.
	* movfgrgriipredec.cgs: New test.  Checks MOVF load with
	pre decrement.
	* movfgriipostincgr.cgs: New test.  Checks MOVF store with
	post increment.
	* movfgriipostincgr.cgs: New test.  Checks MOVF store with
	pre decrement.
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