help required : floating point for i386

[paawan oza]

Hi,

I think I found the solution.

register_buffer (const struct regcache *regcache, int regnum)
{
  return regcache->registers + regcache->descr->register_offset[regnum];
}

where regcache->registers array has different order of storing FPU registers. (not in order st0,st1,st2.....I suppose.)

so we need to pass correct register number.
I am working on that, once it is done...we should be able to record floating point registers : )

Regards,
Oza.





--- On Sun, 5/17/09, paawan oza <paawan1982@yahoo.com> wrote:

> From: paawan oza <paawan1982@yahoo.com>
> Subject: help required : floating point for i386
> To: "Hui Zhu" <teawater@gmail.com>
> Cc: "gdb ml" <gdb@sourceware.org>
> Date: Sunday, May 17, 2009, 2:22 PM
> Hi,
> 
> I am working on i386-tdep.c for floating point.
> 
> I try to do ;
> record_arch_list_add_reg (ir.regcache,I386_ST0_REGNUM);
> does not deterministically record st0 register 
> (sometims it records st1 or sometimes st7)
> why is it so ?
> 
> we collect fpx registers in following functions. do we need
> to do something about following function, so it returns
> correct register !!
> i387_supply_fxsave (regcache, -1, fpxregsetp);
> 
> please help.
> 
> Regards,
> Oza.
> 
> 
>       
>