Hello all,
I am trying to port a 32bit target in GCC 4.4.0
Of the addressing modes that are allowed by my target the one with
(base register + offset) is restrictive in QImode.
The restriction is that if the base register is not Stack Pointer then
this kind of address cannot come in a load instruc
Hello all,
The target that i am working on is 16bit, big endian and with 16 registers.
It has this particular addressing mode
load Rd, Ra[offset]
store Rs, Ra[offset]
where the offset should be positive, base register Ra should be an
even register and for the source or the destination register R
On Tue, Apr 1, 2008 at 2:10 AM, Jim Wilson <[EMAIL PROTECTED]> wrote:
> Mohamed Shafi wrote:
>>
>> For the source or the destination register Rd/Ra, the restriction is
>> that it should be one more than the base register . So the following
>> instructions are valid:
>
> GCC doesn't provide any easy
On Tue, 2008-04-01 at 09:48 +0530, Mohamed Shafi wrote:
> What i did was to have 8 register class with each class having two
> registers, an even register and an odd register then in define expand
> look for the register indirect with offset addressing mode and emit
> gen_store_offset or gen_load_o
On Tue, Apr 1, 2008 at 2:10 AM, Jim Wilson <[EMAIL PROTECTED]> wrote:
> Mohamed Shafi wrote:
> > For the source or the destination register Rd/Ra, the restriction is
> > that it should be one more than the base register . So the following
> > instructions are valid:
>
> GCC doesn't provide any
Mohamed Shafi wrote:
For the source or the destination register Rd/Ra, the restriction is
that it should be one more than the base register . So the following
instructions are valid:
GCC doesn't provide any easy way for the source address to depend on the
destination address, or vice versa.
Hello all,
For a port that i am working on has this particular addressing mode
load Rd, Ra[offset]
store Rs, Ra[offset]
For the above two instructions base register Ra should be an even
register. This i have implemented using the macros REGNO_OK_FOR_BASE_P
and BASE_REG_CLASS by creating a class
