[patch rfc] Revamp REGISTER_TO_VALUE et.al.

[Andrew Cagney]

> Did anyone have better test cases?
> 
>> 
>> I haven't checked, but gdb/214 might do...
> 
> 
> I'm not sure whether the sample code in gdb/214 has anything to add to
> the stuff that's already tested by gdb.base/store.exp.  It suffers
> from the same problem as those test in that it is highly dependent on
> the compiler you use whether a variable is stored in a register or
> not.  The only really reliable test I can imagine is hand-coded
> assembler :-(.

Well, the assembler now has a CFI syntax so it is feasible.

However, it turns out that throwing a few more uses of the word 
"register" at store.exp has pretty much the same effect :-)

I've committed the below.

Andrew


> 2003-06-13  Andrew Cagney  <cagney@redhat.com>
>             Mark Kettenis  <kettenis@gnu.org>
> 
> 	* gdbarch.sh (CONVERT_REGISTER_P): Add "type" parameter.
> 	(REGISTER_TO_VALUE, VALUE_TO_REGISTER): Replace raw buffer
> 	parameter with "frame".
> 	* gdbarch.h, gdbarch.c: Re-generate.
> 	* frame.h (put_frame_register): Declare.
> 	* frame.c (put_frame_register): New function.
> 	* arch-utils.c (legacy_convert_register_p): Add "type" parameter.
> 	(legacy_register_to_value): Rewrite, use "frame" to get the
> 	register value.
> 	(legacy_value_to_register): Rewrite, use "frame" to find the
> 	register's location before storing.
> 	* arch-utils.h (legacy_convert_register_p): Update.
> 	(legacy_register_to_value, legacy_value_to_register): Update.
> 	* findvar.c (value_from_register): Rewrite, eliminate use of
> 	REGISTER_CONVERT_TO_TYPE, pass "type" to CONVERT_REGISTER_P, pass
> 	"frame" to REGISTER_TO_VALUE.
> 	* valops.c (value_assign): Move the CONVERT_REGISTER code to the
> 	lval_reg_frame_relative + lval_register branch of the switch.  Do
> 	not use REGISTER_CONVERT_FROM_TYPE.  Use put_frame_register.
> 	* i386-tdep.c (I386_EBX_REGNUM, I386_ECX_REGNUM, I386_ESI_REGNUM,
> 	I386_EDI_REGNUM): New defines.
> 	(i386_next_regnum, i386_convert_register_p,
> 	i386_register_to_value, i386_value_to_register): New functions.
> 	(i386_register_convertible, i386_register_convert_to_virtual,
> 	i386_convert_to_raw): Remove functions.
> 	(i386_gdbarch_init): Set convert_register_p, register_to_value and
> 	value_to_register instead of register_convertible,
> 	register_convert_to_virtual and register_convert_to_raw.
> 	* mips-tdep.c (mips_convert_register_p): New function.
> 	(mips_value_to_register): Replace mips_register_convert_from_type.
> 	(mips_register_to_value): Replace mips_register_convert_to_type.
> 	(mips_gdbarch_init): Set conver_register_p, value_to_register and
> 	register_to_value.
> 	* alpha-tdep.c (alpha_convert_register_p): Update.
> 	(alpha_value_to_register): Update, store the register.
> 	(alpha_register_to_value): Update, fetch the register.
>