RFA: XStormy16: Fix implementation of MOVF instruction

[Dave Brolley]

  OK with me.

Thanks,
Dave

On 11/02/2010 12:18 PM, Nick Clifton wrote:
> 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.