Re: [Qemu-devel] [PATCH v2 1/5] target-m68k: fix bit operation with immediate value

[Laurent Vivier]

Le 13/01/2017 à 18:55, Richard Henderson a écrit :
> On 01/13/2017 04:51 AM, Laurent Vivier wrote:
>> M680x0 bit operations with an immediate value use 9 bits of the 16bit
>> value, while coldfire ones use only 8 bits.
> 
> I don't see that in the reference manual.  Where do you get this from?

See "BSET Instruction Format:BIT NUMBER STATIC, SPECIFIED AS IMMEDIATE
DATA", p. 4.58 of "M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL", "BIT
NUMBER" is bits 0 to 8 of extended word.

See "Test a Bit and Set", p. 4-22 of "ColdFire Family Programmer’s
Reference Manual, Rev. 3" (link given by Thomas), "Bit Number" is bits 0
to 7 of extended word.

I've found the problem with RISU.

Thanks,
Laurent